JP7255232B2 - Reactor - Google Patents

Description

The present disclosure relates to heat exchange type reactors.

2. Description of the Related Art Conventionally, there is a reactor in which a first fluid and a second fluid, one or both of which are reaction fluids, are heat-exchanged to advance the reaction of reaction raw materials contained in the reaction fluids to produce a desired substance. Patent document 1 discloses a plurality of plates that constitute a flow path for circulating a gas mixture that is a reaction fluid as a first fluid, and a plurality of tubes that circulate a gas mixture that is another reaction fluid as a second fluid. A reactor comprising: Here, the plurality of plates includes a plurality of rectangular plates and a plurality of corrugated plates alternately stacked on each other.

Japanese Patent Publication No. 2003-519563

In general, in a reactor that performs a thermal reaction to produce a desired substance, the composition of the product-containing fluid at the reactor outlet does not reach the equilibrium composition at the current temperature due to various factors. As such, the amount of product produced may be less than theoretically available from the heat input for the reaction. This is the same for the layered reactor disclosed in Patent Document 1, and an improvement is desired for more effectively utilizing the amount of heat given for the reaction.

Accordingly, an object of the present disclosure is to provide a reaction apparatus that is advantageous for more effectively utilizing the amount of heat given for the reaction.

A reaction apparatus according to a first aspect of the present invention includes a first heat transfer body having a first flow path through which a first fluid containing a reaction raw material flows; a second heat transfer body having a second flow path for circulating a second fluid used for heat exchange; A product recovery section for recovering a product produced in the first channel by the endothermic reaction of the raw material, and a product recovery section installed in the product recovery section for collecting the reaction raw material remaining in the first channel and discharged to the recovery space. a catalyst that promotes an endothermic reaction; and a catalyst body having a main body containing the catalyst. It has a flange portion attached to the connection portion in a state in which the main body portion is accommodated in the recovery space. A reaction apparatus according to a second aspect of the present invention includes a first heat transfer body having a first flow path through which a first fluid containing a reaction raw material flows; a second heat transfer body having a second flow path for circulating a second fluid used for heat exchange; A product recovery section for recovering a product produced in the first channel by the endothermic reaction of the raw material, and a product recovery section installed in the product recovery section for collecting the reaction raw material remaining in the first channel and discharged to the recovery space. A catalyst that promotes an endothermic reaction and a catalyst body having a main body containing the catalyst are provided. The product recovery part has a discharge pipe for discharging the product to an external pipe, and the catalyst body recovers the main body. It has a flange portion that is attached to the discharge pipe while being housed in the space.

Further, in the above reactor, the discharge pipe has a first flange portion used for connection with the external pipe, the external pipe has a second flange portion connectable to the first flange portion, The flange portion may be clamped between the first flange portion and the second flange portion. The main body may be cylindrical or columnar. The main body may have a structural material that supports the catalyst. The catalyst may be porous. The catalyst may be in the form of pellets, and the main body may have a cylinder housing the catalyst in pellet form. The structural material may be tubular when the main body is tubular, and may have a plurality of through-holes penetrating between the outside and the inside of the cylinder. The structural material may include a honeycomb structure having a honeycomb-shaped cross section. The structural material may include a corrugated structure formed by rolling a corrugated plate having a wavy cross section into a cylindrical shape. The structural member may be tubular or rod-shaped, and the main body may include a plurality of tubular or rod-shaped structural members. The structural member may include a plurality of discs, and the main body may include a holder that holds the plurality of discs side by side in a direction in which the cylindrical or columnar body extends. The structural member may be a plate structure extending in a spiral shape in accordance with the extending direction of the cylindrical or columnar main body. The body portion may face the outlet. Further, a reaction apparatus according to a third aspect of the present invention includes a first heat transfer body having a first flow path for circulating a first fluid containing a reaction raw material; and a recovery space facing an outlet communicating with the first flow path in the first heat transfer body. , a product recovery section for recovering a product produced in the first flow path by an endothermic reaction of the reaction raw materials; a catalyst that promotes an endothermic reaction of the raw material, and the product recovery section is a conduit section having a shape in which the recovery space extends along the stacking direction of the first heat transfer body and the second heat transfer body, The catalyst is carried on the inner wall of the product recovery section facing the recovery space. Furthermore, a reaction apparatus according to a fourth aspect of the present invention includes a first heat transfer body having a first flow path for circulating a first fluid containing a reaction raw material; and a recovery space facing an outlet communicating with the first flow path in the first heat transfer body. , a product recovery section for recovering a product generated in the first flow path by an endothermic reaction of the reaction raw materials; a catalyst that promotes an endothermic reaction of the raw material, and the product recovery section is a conduit section having a shape in which the recovery space extends along the stacking direction of the first heat transfer body and the second heat transfer body, The catalyst is a granular material housed in the recovery space.

ADVANTAGE OF THE INVENTION According to this disclosure, it is possible to provide a reactor that is advantageous in more effectively utilizing the amount of heat given for the reaction.

1 is a side view showing the configuration of a reactor according to a first embodiment of the present disclosure; FIG. 2 is a cross-sectional plan view showing a portion including a first heat transfer body of the reactor according to the first embodiment; FIG. FIG. 3 is a plan cross-sectional view showing a portion including a second heat transfer member of the reactor according to the first embodiment; FIG. 2 is a perspective view showing a configuration example of a first catalyst adopted in the first embodiment; FIG. 4 is a diagram for explaining the arrangement and the like of a second catalyst employed in the first embodiment; FIG. 3 is a perspective view showing a configuration example of a second catalyst adopted in the first embodiment; FIG. 3 is a perspective view showing a configuration example of a second catalyst adopted in the first embodiment; FIG. 3 is a perspective view showing a configuration example of a second catalyst adopted in the first embodiment; FIG. 4 is a diagram showing another shape of a product recovery section employed in the first embodiment; FIG. 4 is a diagram showing another shape of a product recovery section employed in the first embodiment; FIG. 4 is a cross-sectional view showing a catalyst employed in a reactor according to a second embodiment of the present disclosure; FIG. 4 is a side view showing a catalyst employed in a reactor according to a third embodiment of the present disclosure;

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Here, the dimensions, materials, and other specific numerical values shown in the embodiment are merely examples, and do not limit the present disclosure unless otherwise specified. Elements having substantially the same function and configuration are denoted by the same reference numerals to omit redundant description, and elements that are not directly related to the present disclosure are omitted from the drawings. Furthermore, in the following figures, the Z axis is taken in the stacking direction, the Y axis is taken in each extending direction of the reaction channel and the heat medium channel in a plane perpendicular to the Z axis, and the Y axis is perpendicular to the Y axis. Take the X-axis in the direction.

(First embodiment)
First, the reactor according to the first embodiment of the present disclosure will be described. FIG. 1 is a side view showing the configuration of a reactor 1 according to the first embodiment. The reactor 1 produces a product P by heat exchange between the reaction fluid M and the heat medium HC. The reaction fluid M is a gas or liquid containing reaction raw materials as reactants. Hereinafter, the reactant fluid M is a raw material gas as an example. The product P is a substance produced by the thermal reaction of reactants. The thermal reaction in this embodiment is an endothermic reaction. Also, the heat medium HC is, for example, a high-temperature gas.

The reaction device 1 includes a heat exchange section 3 , a reaction fluid introduction section 45 , a product recovery section 49 , a heat medium introduction section 53 and a heat medium recovery section 57 .

The heat exchanging part 3 causes the reaction fluid M and the heat medium HC to exchange heat, and advances the thermal reaction of the reaction raw materials contained in the reaction fluid M. The heat exchange section 3 includes a first heat transfer body 7, a second heat transfer body 9, and a third heat transfer body 39, which are laminated on each other. Each of the first heat conductor 7, the second heat conductor 9, and the third heat conductor 39 is a plate-like member made of a thermally conductive material having heat resistance. Also, the areas of the lamination surfaces of the first heat conductor 7, the second heat conductor 9, and the third heat conductor 39 are assumed to be the same. In this embodiment, there are a plurality of first heat conductors 7 and a plurality of second heat conductors 9 .

The first heat transfer body 7 has a reaction channel 17 through which the reaction fluid M or the product P flows (see FIG. 2). The second heat transfer body 9 has a heat medium flow path 31 through which the heat medium HC flows (see FIG. 3). In the present embodiment, the heat exchange section 3 is configured such that the reaction fluid M flowing in the mainstream of the reaction flow path 17 and the heat medium HC flowing in the mainstream of the heat medium flow path 31 flow in opposite directions. is a type.

FIG. 2 is a plan sectional view of the reactor 1 corresponding to the II-II section shown in FIG. FIG. 2 shows the configuration and shape of the portion of the reactor 1 that includes the first heat transfer member 7 .

The reaction channel 17 includes a plurality of first channels 22 and a first confluence channel 23 . The first channel 22 includes a reaction region in which the reaction raw material contained in the reaction fluid M receives heat supplied from the heat medium HC flowing through the heat medium channel 31 to cause an endothermic reaction. The first flow channel 22 corresponds to the main flow portion of the reaction flow channel 17, and is a groove having a rectangular flow channel cross section with an upward opening in the Z direction. In the present embodiment, the plurality of first flow paths 22 each extend linearly along the Y direction and are arranged at regular intervals along the X direction. One end of the first flow path 22 is open at a first side surface 60 of the heat exchange section 3 including one side surface of the first heat transfer body 7 . The end of the first channel 22 that is open on the first side surface 60 is the first inlet 20 through which the reaction fluid M is introduced. The other end of the first flow path 22 communicates with the first confluence flow path 23 on the side of the second side surface 61 of the heat exchange section 3 including the other side surface of the first heat transfer body 7 . In addition, in FIG. 2, the number of the 1st flow paths 22 is made into eight as an example. However, the number of first flow paths 22 is not particularly limited.

The first heat conductor 7 includes a first base 11 , two first side walls 13 , a plurality of first intermediate walls 15 and a first partition 19 . The first base portion 11 is a plate portion covering the entire XY plane of the first heat transfer body 7 . The first side wall 13 is a wall portion provided on one main surface of the first base portion 11 at each side end in the X direction perpendicular to the extending direction of the first flow path 22 . The plurality of first intermediate walls 15 are sandwiched between the two first side walls 13 on one main surface of the first base 11, arranged parallel to the first side walls 13, and provided at equal intervals. It is a wall that is The first partition wall 19 is provided on one main surface of the first base portion 11 on the side of the second side surface 61 along the X direction perpendicular to the extending direction of the first flow path 22 . Here, if the first flow path 22 extends to the second side surface 61, the first flow path 22 hits the second introduction space S2 into which the heat medium HC is introduced. Therefore, the first partition wall 19 changes the traveling direction of the product P or reaction fluid M flowing through the plurality of first flow paths 22 so that the first flow paths 22 do not collide with the second introduction space S2. separated by

The first confluence channel 23 is a groove having a rectangular channel cross section with an upward opening in the Z direction, and is provided linearly along the inner surface of the first partition wall 19 . The first side wall 13 has a first discharge port 21 for discharging the product P to the outside of the first heat transfer body 7 . As an example, the first discharge port 21 opens outward from the third side surface 62 . The third side surface 62 is one side surface of the YZ plane that is perpendicular to the first side surface 60 and the second side surface 61 of the heat exchange section 3 .

In addition, since the heat exchange section 3 is configured by laminating the first heat transfer body 7 and the second heat transfer body 9 , the four side surfaces of the first heat transfer body 7 are the heat exchange section 3 . It corresponds to a part of each of the first side 60, the second side 61, the third side 62 and the fourth side 63, which are the four sides of the .

FIG. 3 is a plan sectional view of the reactor 1 corresponding to the III-III section shown in FIG. FIG. 3 shows the configuration and shape of the portion of the reactor 1 that includes the second heat transfer member 9 .

The heat medium flow path 31 includes a plurality of second flow paths 36 and second confluence flow paths 37 . The heat medium HC flowing through the second flow path 36 supplies heat to the first heat transfer body 7 laminated on the second heat transfer body 9 . The second flow path 36 corresponds to the main flow portion of the heat medium flow path 31, and is a groove that opens upward in the Z direction and has a rectangular flow path cross section. In this embodiment, the plurality of second flow paths 36 each extend linearly along the Y direction and are arranged at regular intervals along the X direction. One end of the second flow path 36 is open at the second side surface 61 . The end of the second flow path 36 that is open on the second side surface 61 is the second inlet 30 through which the heat medium HC is introduced. The other end of the second flow path 36 communicates with the second confluence flow path 37 on the first side surface 60 side. In addition, in FIG. 3, the number of the second flow paths 36 is, as an example, eight in accordance with the number or arrangement of the first flow paths 22 formed in the first heat transfer body 7 . However, the number of second flow paths 36 is not particularly limited, and may be even greater in consideration of the number of first flow paths 22 formed in the first heat transfer body 7 .

The second heat transfer body 9 includes a second base 25 , two second side walls 27 , a plurality of second intermediate walls 29 and a second partition wall 33 . The second base portion 25 is a plate portion that covers the entire XY plane of the second heat transfer body 9 . The second side walls 27 are wall portions provided on one main surface of the second base portion 25 at the side ends in the X direction perpendicular to the extending direction of the second flow path 36 . The plurality of second intermediate walls 29 are sandwiched between the two second side walls 27 on one main surface of the second base portion 25, arranged parallel to the second side walls 27, and provided at regular intervals. It is a wall that is The second partition wall 33 is provided on one main surface of the second base portion 25 on the side of the first side surface 60 along the X direction perpendicular to the extension direction of the second flow path 36 . Here, if the second flow path 36 extends to the first side surface 60, the second flow path 36 hits the first introduction space S1 into which the reaction fluid M is introduced. Therefore, the second partition wall 33 changes the traveling direction of the heat medium HC flowing through the plurality of second flow paths 36, and separates the second flow paths 36 so as not to collide with the first introduction space S1. .

The second confluence channel 37 is a groove having a rectangular channel cross-section with an upward opening in the Z direction, and is provided linearly along the inner surface of the second partition wall 33 . The second side wall 27 has a second discharge port 35 for discharging the heat medium HC to the outside of the second heat transfer body 9 . One end of the second confluence channel 37 communicates with the second discharge port 35 . As an example, the second discharge port 35 opens outward from the third side surface 62 .

In addition, since the heat exchange section 3 is configured by laminating the first heat transfer body 7 and the second heat transfer body 9 , the four side surfaces of the second heat transfer body 9 are the heat exchange section 3 . It corresponds to a part of each of the first side 60, the second side 61, the third side 62 and the fourth side 63, which are the four sides of the .

The third heat transfer body 39 is a cover installed at the top of the heat exchange section 3 in the Z direction. By alternately stacking and bonding the second heat conductors 9 and the first heat conductors 7 toward the lower side of the third heat conductors 39, the heat exchange section 3 as a bonded body or laminated body is formed. . At this time, the first flow path 22 and the second flow path 36 are adjacent to each other in parallel via the first base portion 11 or the second base portion 25 . When assembling the heat exchange part 3, the members are fixed by using a joining method such as TIG (Tungsten Inert Gas) welding or diffusion bonding, so that the conduction caused by poor contact between the members is reduced. Decrease in heat resistance and the like are suppressed.

Heat-resistant metals such as iron-based alloys and nickel alloys are suitable as the thermally conductive material for each element that constitutes the heat exchange section 3 . Specific examples include iron-based alloys such as stainless steel, and heat-resistant alloys such as nickel alloys such as Inconel 625 (registered trademark), Inconel 617 (registered trademark), and Haynes 230 (registered trademark). These thermally conductive materials are preferable because they have durability or corrosion resistance to the progress of the reaction in the first flow path 22 and the fluid that can be used as the heat medium HC, but are not limited to these. The thermally conductive material may be iron-based plated steel, metal coated with heat-resistant resin such as fluororesin, carbon graphite, or the like.

The heat exchange section 3 can be composed of a pair of at least one first heat transfer body 7 and at least one second heat transfer body 9 . However, from the viewpoint of improving the heat exchange performance, it is desirable that the number of heat conductors is large as illustrated in each figure. Also, the number of the first flow paths 22 formed in one first heat transfer body 7 and the number of the second flow paths 36 formed in one second heat transfer body 9 are not limited. However, it can be changed as appropriate in consideration of the design conditions of the heat exchange section 3, heat transfer efficiency, and the like. Further, the reaction apparatus 1 may be configured such that the periphery of the heat exchange section 3 is covered with a housing or a heat insulating material in order to suppress heat radiation from the heat exchange section 3 and suppress heat loss.

Also, a catalytic body may be installed in the first flow path 22 . Here, in this embodiment, the catalyst or the catalyst is installed in the product recovery section 49 as well as the catalyst can be installed in the first flow path 22 . Therefore, in order to distinguish from the catalyst or the catalyst body installed in the product recovery section 49, the catalyst body installed in the first flow path 22 is hereinafter referred to as the first catalyst body 41. As shown in FIG.

FIG. 4 is a perspective view showing a configuration example of the first catalyst 41. As shown in FIG.

The catalyst contained in the first catalyst body 41 is mainly composed of an active metal effective for promoting the progress of the endothermic reaction of the reaction raw materials, and is suitable for promoting the reaction based on the synthesis reaction performed in the heat exchange section 3. selected. Examples of active metals that can be employed as catalyst components include Ni (nickel), Co (cobalt), Fe (iron), Pt (platinum), Ru (ruthenium), Rh (rhodium), Pd (palladium), and the like. be done. In addition, you may combine multiple types of active metals.

The first catalyst body 41 is prepared, for example, by supporting a catalyst on a structural material. The material of the structural material is selected from heat-resistant metals that can be molded and that can support a catalyst. In order to increase the contact area with the reactant fluid M, the first catalyst body 41 may be a corrugated plate with a round, wavy cross-section, or a rod with a jagged bend. Heat-resistant metals include Fe (iron), Cr (chromium), Al (aluminum), Y (yttrium), Co (cobalt), Ni (nickel), Mg (magnesium), Ti (titanium), Mo (molybdenum), ), W (tungsten), Nb (niobium), and Ta (tantalum). For example, the first catalyst body 41 may be configured by molding a thin plate structural material made of a heat-resistant alloy such as Fecralloy (registered trademark). As a method for supporting the catalyst, there are a method of directly supporting it on a structural material by surface modification, etc., and a method of indirectly supporting it using a carrier. be. Considering the reaction performed in the heat exchange section 3, the carrier is appropriately selected from materials that do not hinder the progress of the reaction, have durability, and can support the catalyst to be used satisfactorily. Examples thereof include metal oxides such as Al ₂ O ₃ (alumina), TiO ₂ (titania), ZrO ₂ (zirconia), CeO ₂ (ceria), SiO ₂ (silica), etc., one or more of which are selected. can be used as a carrier. Examples of the supporting method using a carrier include a method of forming a mixture layer of a catalyst and a carrier on the surface of a molded structural material, and a method of forming a carrier layer and then supporting the catalyst by surface modification or the like. .

On the other hand, although not shown, the second flow path 36 has a heat transfer medium for increasing the contact area with the heat medium HC and promoting heat transfer between the heat medium HC and the second heat transfer body 9 . A facilitator may be installed. The shape of the heat transfer promoting member may be a corrugated plate shape in order to secure a contact area with the second heat transfer member 9 . Moreover, metals, such as aluminum, copper, stainless steel, and an iron-based plated steel, are mentioned as a heat conductive material which comprises a heat-transfer promoter.

The reaction fluid introduction part 45 is a first cover that distributes the reaction fluid M to each of the plurality of first introduction ports 20 . The reaction fluid introduction part 45 has a concavely curved shape, covers the first side surface 60 of the heat exchange part 3 where the plurality of first introduction ports 20 of the reaction channel 17 are open, and A first introduction space S1 is formed between. The reaction fluid introduction part 45 can be attached to and detached from the heat exchange part 3 or can be opened and closed. By attaching and detaching the reaction fluid introduction part 45 , for example, the operator can insert and remove the first catalyst 41 into and out of the reaction channel 17 . In addition, the reaction fluid introduction part 45 has a first introduction pipe 47 for introducing the reaction fluid M from the outside to the inside. The first introduction pipe 47 faces approximately the center of the first side surface 60 on the XZ plane and is connected along the opening direction of the plurality of first introduction ports 20 .

The product recovery section 49 is a first conduit section having a first recovery space S3 for recovering the product P that has flowed through the reaction channel 17 . In this embodiment, the product recovery unit 49 has a box shape with one open surface, and the heat exchange unit is arranged so that the first discharge port 21 of the first heat transfer body 7 is included in the open surface. 3 on the third side 62 . That is, part of the side surface of the first heat transfer body 7 including the first discharge port 21 becomes part of the inner wall of the product recovery section 49 . The product recovery section 49 also has a first discharge pipe 51 for discharging the product P to the outside of the reactor 1 .

In addition, a catalyst body is installed in the product recovery section 49 . Hereinafter, the catalyst installed in the product recovery section 49 will be referred to as a second catalyst 42 to distinguish it from the first catalyst 41 that can be installed in the first channel 22 .

FIG. 5 is a diagram for explaining the arrangement of the second catalyst 42 and the like. FIG. 5 is basically a cross-sectional view taken along the YZ plane of the product recovery section 49 in which the second catalyst body 42 is installed. However, only part of the second catalytic body 42 is shown in side view.

As described above, the product recovery section 49 in which the second catalyst 42 is installed has a shape including, in its open surface, the plurality of first discharge ports 21 arranged along the Z direction. Therefore, the shape of the first recovery space S3 is also elongated along the Z direction in accordance with the arrangement of the plurality of first discharge ports 21 . Therefore, in the present embodiment, the second catalyst body 42 has an elongated shape in accordance with the extending direction of the first recovery space S3.

FIG. 6 is a perspective view showing three configurations from a first configuration 42a to a third configuration 42c as configuration examples of the second catalyst body 42. FIG.

FIG. 6(a) is a diagram showing a first configuration 42a of the second catalyst body 42. FIG. The first configuration 42 a includes a first body portion 70 , a flange portion 43 and a support portion 44 .

The first body portion 70 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The materials of the catalyst components and structural materials that can be used in the first body portion 70 are the same as those used in the first catalyst body 41 . The shape of the first body portion 70 is cylindrical, for example, a cylindrical shape with an outer diameter D1. The catalyst is supported on the outer peripheral surface and the inner peripheral surface of the cylindrical structural member. Note that the cross-sectional shape of the first main body portion 70 is not limited to an annular ring, and may be, for example, a polygonal ring.

The flange portion 43 is attached to a connecting portion 52 that is provided in advance in the product recovery section 49 when the second catalyst body 42 is installed in the product recovery section 49 . The shape of the flange portion 43 is, for example, a disk shape. The shape of the flange portion 43 is basically defined by the relationship with the shape of the connection portion 52 of the product recovery portion 49, but is not particularly limited. The flange portion 43 has a plurality of through holes 43 a through which bolts 65 used for attachment to the connection portion 52 are passed.

The support portion 44 is connected to the flange portion 43 and supports the first body portion 70 . For example, when the shape of the flange portion 43 is disk-shaped, the support portion 44 has a cylindrical shape whose outer diameter matches the outer diameter D1 of the first main body portion 70, and the first main body portion 70 and the flange portion 43 is coaxial with Note that the support portion 44 may be integrated in advance with the structural material or the flange portion 43 that constitutes the first main body portion 70 .

FIG. 6(b) is a diagram showing a second configuration 42b of the second catalytic body 42. As shown in FIG. The second configuration 42 b includes a second body portion 71 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first configuration 42a.

The second body portion 71 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The catalyst components and structural materials that can be used in the second body portion 71 are the same as those used in the first catalyst body 41 . The overall schematic shape of the second body portion 71 is cylindrical with an outer diameter D1. However, the inside of the second body portion 71 is composed of a honeycomb structure 71a having a honeycomb-shaped cross section. The catalyst is carried, for example, on the outer and inner peripheral surfaces of the cylindrical structural member and the surface of the structural member that is the honeycomb structure 71a. The cross-sectional shape of the tubular portion of the second main body portion 71 is not limited to an annular ring, and may be, for example, a polygonal ring.

FIG. 6(c) is a diagram showing a third configuration 42c of the second catalyst body 42. As shown in FIG. The third configuration 42 c includes a third body portion 72 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first configuration 42a.

The third body portion 72 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The catalyst components and structural materials that can be used in the third body portion 72 are the same as those used in the first catalyst body 41 . The overall schematic shape of the third body portion 72 is cylindrical with an outer diameter D1. However, specifically, the third body portion 72 is formed of a corrugated structure formed by rolling a corrugated plate having a wavy cross section into a cylindrical shape. In this case, the catalyst is carried on the surface of the structural material that is the corrugated structure.

FIG. 7 is a perspective view showing three configurations from a fourth configuration 42 d to a sixth configuration 42 f as further configuration examples of the second catalyst body 42 .

FIG. 7(a) is a diagram showing a fourth configuration 42d of the second catalyst body 42. FIG. The fourth structure 42 d includes a fourth body portion 73 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first configuration 42a.

The fourth body portion 73 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The materials of the catalyst components and structural materials that can be used in the fourth body portion 73 are the same as those used in the first catalyst body 41 . The overall schematic shape of the fourth body portion 73 is cylindrical with an outer diameter D1. However, similarly to the third body portion 72, the inside of the fourth body portion 73 is composed of a corrugated structure 73a formed by rolling a corrugated plate having a wavy cross section into a cylindrical shape. The catalyst is carried on, for example, the outer and inner peripheral surfaces of the cylindrical structural member and the surface of the structural member that is the corrugated structure 73a. In addition, as shown in FIG. 7(a), the cylindrical structural member may be formed with a plurality of through-holes to facilitate the flow of the product between the cylindrical exterior and the cylindrical interior. The cross-sectional shape of the cylindrical portion of the fourth main body portion 73 is not limited to an annular ring, and may be, for example, a polygonal ring.

FIG. 7(b) is a diagram showing a fifth configuration 42e of the second catalytic body 42. As shown in FIG. The fifth configuration 42 e includes a fifth body portion 74 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first configuration 42a.

The fifth body portion 74 is prepared by supporting a catalyst on a structural material in the same manner as the first catalyst body 41, or is composed of the catalyst itself. The catalyst components and structural materials that can be used in the fifth body portion 74 are the same as those used in the first catalyst body 41 . The basic shape of the fifth body portion 74 is a porous cylindrical or columnar shape. For example, the fifth body portion 74 may be a porous cylinder with an outer diameter D1. In this case, the catalyst may be supported on the entire porous cylindrical structural material. Alternatively, the porous cylinder itself may be composed of a catalyst. On the other hand, the fifth body portion 74 may be a porous cylinder with an outer diameter D1. In this case, the catalyst may be supported on the entire porous columnar structural material. Alternatively, the porous cylinder itself may be composed of a catalyst. In addition, FIG. 7B shows, as an example, the fifth body portion 74 formed by rolling a porous plate into a cylindrical shape. However, the cross-sectional shape of the porous cylinder or column is not limited to an annular ring or a circle, and may be, for example, a polygonal ring or a polygonal shape.

FIG. 7(c) is a diagram showing a sixth configuration 42f of the second catalytic body 42. As shown in FIG. The sixth configuration 42 f includes a sixth body portion 75 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first structure 42a.

The sixth body portion 75 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The catalyst components and structural materials that can be used in the sixth body portion 75 are the same as those used in the first catalyst body 41 . The basic shape of the sixth body portion 75 is an assembly of a plurality of cylindrical or rod-shaped structures. A plurality of tubular or rod-shaped structural bodies are obtained by supporting a catalyst on the entirety of a tubular or rod-shaped structural material. Note that FIG. 7C shows, as an example, the sixth main body portion 75 configured as an assembly of a plurality of structures in which catalysts are supported on rod-shaped structural materials.

FIG. 8 is a perspective view showing three configurations from a seventh configuration 42g to a ninth configuration 42i as further configuration examples of the second catalyst body 42. FIG.

FIG. 8(a) is a diagram showing a seventh configuration 42g of the second catalyst body 42. FIG. The seventh configuration 42 g includes a seventh body portion 76 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first structure 42a.

The seventh body portion 76 is a structure in which a pellet-shaped catalyst 76a is accommodated inside a tubular body such as a cylinder. The material of the catalyst 76 a is the same as that used for the first catalyst body 41 . In addition, as shown in FIG. 8(a), the cylinder may have a plurality of through-holes to facilitate the flow of the product between the outside and inside of the cylinder. The cross-sectional shape of the cylindrical portion of the seventh main body portion 76 is not limited to an annular ring, and may be, for example, a polygonal ring.

FIG. 8(b) is a diagram showing an eighth configuration 42h of the second catalyst body 42. As shown in FIG. The eighth configuration 42 h includes an eighth body portion 77 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first configuration 42a.

The eighth main body portion 77 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The catalyst components and structural materials that can be used in the eighth body portion 77 are the same as those used in the first catalyst body 41 . The eighth body portion 77 has a plurality of discs 77a, which are discs having an outer diameter D1, for example, and a holder 77b that holds the plurality of discs 77a. The catalyst is carried, for example, on the front and rear surfaces of the board 77a. In the example shown in FIG. 8B, the holder 77b is a rod whose one end is supported by the support 44. As shown in FIG. In this case, the holding body 77b penetrates through the center of each of the plurality of discs 77a and holds the plurality of discs 77a side by side in the extending direction. The intervals between the disc bodies 77a adjacent to each other in the extending direction may be equal intervals, or may differ depending on the position. On the other hand, although not shown, the holding body 77b is not a holding rod, but a cylindrical structure having a plurality of through holes, such as the fourth body portion 73 shown in FIG. 7(a). may be In this case, the inner peripheral surface of the tubular structure contacts the outer peripheral surfaces of the plurality of discs 77a, and holds the plurality of discs 77a side by side in the extending direction. When the cylindrical structure holds the plurality of discs 77a in this way, the plurality of discs 77a have through holes that allow the product to flow between the front and back surfaces of the discs 77a. You may Further, the eighth main body portion 77 may have a polygonal disk having a polygonal planar shape instead of the disk body 77a.

FIG. 8(c) is a diagram showing a ninth configuration 42i of the second catalytic body 42. As shown in FIG. The ninth configuration 42 i includes a ninth body portion 78 , a flange portion 43 and a support portion 44 . Here, the flange portion 43 and the support portion 44 may be the same as those constituting the first structure 42a.

The ninth body portion 78 is prepared by supporting a catalyst on a structural material, similarly to the first catalyst body 41 . The catalyst components and structural materials that can be used in the eighth body portion 77 are the same as those used in the first catalyst body 41 . The ninth body portion 78 has a plate structure 78a spirally extending from the support portion 44, and a holder 78b that holds the plate structure 78a. In the plate structure 78a, the cross-sectional shape on a plane perpendicular to the extending direction is a circle with an outer diameter D1. The catalyst is carried, for example, on the front and rear surfaces of the plate structure 78a. The holding body 78b is, for example, a rod whose one end is supported by the support portion 44 and extends so as to penetrate the inner peripheral region existing along the extending direction of the plate structure 78a. The plate structure 78a is held by the holder 78b via a plurality of support rods 78c projecting from the holder 78b.

Furthermore, the product recovery section 49 has, for example, a connection section 52 for attaching the second catalyst body 42 to one wall section in the Z direction. Note that FIG. 5 illustrates a case where the connecting portion 52 is provided on the lower wall portion of the product recovery portion 49 in the Z direction, that is, on the lower inner wall surface 49b side of the product recovery portion 49 . Here, the case where the second catalyst body 42 attached to the product recovery section 49 has the first configuration 42a is illustrated. However, it is the same even if the second catalyst body 42 is the second configuration 42b or the third configuration 42c.

The connecting portion 52 has an opening 52a, a plurality of bolt holes 52b, and a gasket groove 52c. The opening 52a penetrates the inside and outside of the product recovery section 49 . An opening diameter D2 of the opening portion 52a is larger than the outer diameter D1 of the first main body portion 70 . Therefore, the opening 52a can pass through the first body portion 70 and the support portion 44, which are part of the second catalyst body 42. As shown in FIG. The plurality of bolt holes 52b are provided corresponding to the positions of the plurality of through holes 43a of the flange portion 43, and when the flange portion 43 is attached to the connecting portion 52, the bolts 65 passing through the through holes 43a are respectively fastened. Gasket grooves 52c are used to attach gaskets 66 that are used to tightly fasten flange portion 43 to connection portion 52 . The overall shape of the connection portion 52 is not particularly limited as long as it is a shape that allows the flange portion 43 to be attached.

When the second catalyst body 42 and the connection part 52 are configured as described above, the first main body part 70 is the inner wall of the product recovery part 49 when the second catalyst body 42 is attached to the product recovery part 49 . It is arranged along the side surface 49c. At this time, the first body portion 70 is not in contact with the inner wall side surface 49 c and the inner wall upper surface 49 a of the product recovery portion 49 .

Here, regarding the portion of the second catalyst body 42 housed in the first recovery space S3, the tip of the second catalyst body 42 on the side opposite to the flange portion 43 from the inner wall lower surface 49b of the product recovery portion 49 is Let the distance to be L1. On the other hand, the distance from the lower surface 49b of the inner wall of the product recovery section 49 to the farthest portion of the outlet port 51a of the first discharge pipe 51 is L2. At this time, the distance L1 is longer than the distance L2. In other words, the distance L1 can be defined within a range from the distance L2 to the distance L3 from the inner wall lower surface 49b of the product recovery section 49 to the inner wall upper surface 49a. Also, the outer diameter D1 of the first body portion 70 may be larger than the inner diameter D3 of the first discharge pipe 51 .

The position where the first discharge pipe 51 is provided in the product recovery section 49 is not limited to the side wall portion of the product recovery section 49 as illustrated above.

FIG. 9 is a diagram showing the shape of another product recovery section 49 drawn corresponding to FIG. In the product recovery unit 49 shown in FIG. 9, a first discharge pipe 80 instead of the first discharge pipe 51 is provided on one wall in the Z direction. 9, similarly to FIG. 5, the case where the connecting portion 52 is provided on the lower wall portion of the product recovery portion 49 in the Z direction, that is, on the inner wall lower surface 49b side of the product recovery portion 49 is illustrated. are doing. In this case, the first discharge pipe 80 may be provided on the upper wall portion of the product recovery section 49 in the Z direction, that is, on the inner wall upper surface 49 a side of the product recovery section 49 . Conversely, when the connecting portion 52 is provided on the upper wall portion of the product recovery portion 49 in the Z direction, the first discharge pipe 80 is provided on the lower wall portion of the product recovery portion 49 in the Z direction. may be provided.

Here, the inner diameter D4 of the first discharge pipe 80 may be the same as the inner diameter D3 of the first discharge pipe 51 shown in FIG. On the other hand, as illustrated in FIG. D4 may be the same as the opening diameter D2 of the opening 52a. In this case, the length of the first body portion 70 is preferably the length extending from the inner wall lower surface 49b of the product recovery portion 49 to the vicinity of the inner wall upper surface 49a, like the distance L3 shown in FIG. According to such a configuration, the fluid passing through the product recovery section 49 and directed to the outlet port 80 a of the first discharge pipe 80 more easily contacts the second catalyst body 42 .

Further, when the inner diameter D4 of the first discharge pipe 80 is the same as the opening diameter D2 of the opening 52a, the first body portion 70 having the outer diameter D1 can enter the outlet 80a of the first discharge pipe 80. Therefore, although not shown, by making the length of the first body portion 70 longer than the distance L3, the tip portion of the first body portion 70 is located at a position facing the opening portion 52a of the connection portion 52. The length may be such that it enters the outlet port 80 a of the first discharge pipe 80 . According to such a configuration, most of the fluid that passes through the product recovery section 49 and heads for the outlet port 80 a of the first discharge pipe 80 contacts the second catalyst body 42 .

FIG. 10 is a diagram showing the shape of another product recovery section 49 drawn corresponding to FIG. 5 as well as FIG. In the product recovery unit 49 shown in FIG. 10, two discharge pipes are provided instead of the first discharge pipe 51 described above. One first discharge pipe 81 is provided on the upper wall portion in the Z direction, that is, on the inner wall upper surface 49 a side of the product recovery portion 49 . The other first discharge pipe 81 is provided on the lower wall portion in the Z direction, that is, on the inner wall lower surface 49 b side of the product recovery section 49 .

In this case, the first discharge pipe 81 on one side and the second discharge pipe 82 on the other side have the same shape as the first discharge pipe 80 illustrated in FIG. For example, the inner diameters of the first discharge pipe 81 and the second discharge pipe 82 may each be D4, similar to the inner diameter of the first discharge pipe 80 .

However, the first exhaust pipe 81 has a first flange portion 81b to which the flange portion 43 of the second catalyst body 42 can be attached while the first main body portion 70 of the second catalyst body 42 is passed through the outlet port 81a. have That is, the first flange portion 81 b has a plurality of through holes 81 c provided corresponding to the positions of the plurality of through holes 43 a of the flange portion 43 .

An external pipe 83 is connected to the first exhaust pipe 81 via the flange portion 43 of the second catalyst body 42 . The external pipe 83 has a second flange portion 83b to which the flange portion 43 of the second catalyst body 42 can be attached, like the first flange portion 81b. The opening 83 a of the external pipe 83 has the same dimensions as the outlet 81 a of the first discharge pipe 81 . The first flange portion 81b and the second flange portion 83b each have a gasket groove for attaching the gasket 66, like the gasket groove 52c formed in the flange portion 43 of the second catalyst body . That is, the flange portion 43 is sandwiched between the first flange portion 81b and the second flange portion 83b and fastened with the bolts 65 passing through the through-holes 81c and 83c. The external piping 83 is attached and the second catalyst body 42 is held.

On the other hand, when the second catalyst 42 is held by the first discharge pipe 81, the support portion 44 of the second catalyst 42 is arranged so that the fluid can flow from the product recovery portion 49 toward the external pipe 83. , a through hole 44a that communicates from the first body portion 70 side to the opening portion 83a side of the external pipe 83 . Also, even when the second catalyst 42 is held by the first discharge pipe 81, the length of the second catalyst 42 can be set as described with reference to FIG.

According to such a configuration, even if the product recovery unit 49 has the first discharge pipe 81 and the second discharge pipe 82, the fluid in contact with the second catalyst body 42 is directed to both discharge pipes. be able to.

Further, the product recovery unit 49 may have a configuration in which only the first discharge pipe 81 is provided without providing the second discharge pipe 82 . That is, even if the product recovery unit 49 is not provided with the first discharge pipe 51 and the connection part 52 as illustrated in FIG. , the second catalyst body 42 can be easily held in accordance with the connection with the external pipe 83 .

The heat medium introduction part 53 is a second cover that distributes the heat medium HC to each of the plurality of second introduction ports 30 . The heat medium introduction part 53 has a concavely curved shape, covers the second side surface 61 of the heat exchange part 3 in which the plurality of second introduction ports 30 of the heat medium flow path 31 are open, and covers the heat exchange part 3 A second introduction space S2 is formed between. The heat medium introduction part 53 can be attached to and detached from the heat exchange part 3 or can be opened and closed. By attaching and detaching the heat medium introduction part 53 , for example, the operator can insert and remove the heat transfer promoter into and out of the heat medium flow path 31 . Moreover, the heat medium introduction part 53 has a second introduction pipe 55 for introducing the heat medium HC from the outside to the inside. The second introduction pipe 55 faces approximately the center of the second side surface 61 on the XZ plane and is connected along the opening direction of the plurality of second introduction ports 30 . According to the heat medium introduction part 53 , the heat medium HC introduced from one second introduction pipe 55 is distributed to each of the plurality of second introduction ports 30 .

The heat medium recovery section 57 is a second conduit section having a second recovery space S4 for recovering the heat medium HC that has flowed through the heat medium flow path 31 . In this embodiment, the heat medium recovery unit 57 has a box shape with one open surface, and the heat exchange unit is arranged so that the open surface includes the second discharge port 35 of the second heat transfer body 9 . 3 on the third side 62 . That is, part of the side surface of the second heat transfer body 9 including the second discharge port 35 becomes part of the inner wall of the heat medium recovery section 57 . The heat medium recovery unit 57 also has a second discharge pipe 59 for discharging the heat medium HC to the outside of the reaction device 1 .

The heat exchange section 3 can be used as a liquid-liquid heat exchanger, a gas-gas heat exchanger, or a gas-liquid heat exchanger. The reaction fluid M and heat medium HC may be either gas or liquid. The synthesis by the endothermic reaction in the heat exchange section 3 includes, for example, the steam reforming reaction of methane represented by the formula (1) or the dry reforming reaction of methane represented by the formula (2). In addition, the reaction fluid in these reactions is gaseous.

_CH4 + _H2O- > _3H2 +CO (1)
_CH4 + _CO2- > _2H2 +2CO (2)

On the other hand, as the heat medium HC, a substance that does not corrode the constituent materials of the heat exchange section 3 is suitable. In the case of a high-temperature gas as in this embodiment, a gaseous substance such as combustion gas or heated air is used. can. In addition, for example, a liquid substance such as water or oil may be used. However, when a gaseous substance is used as the heat medium HC, it is easier to handle than when a liquid medium is used.

Next, the operation of the reactor 1 according to this embodiment will be described.

First, regarding the reaction fluid M, the reaction fluid M introduced from the first introduction pipe 47 into the reaction fluid introduction part 45 is distributed to each of the plurality of first introduction ports 20 in the first introduction space S1. The reaction fluid M is introduced into the reaction channel 17 from each first inlet 20 and flows through the first channel 22 along the Y direction.

On the other hand, regarding the heat medium HC, the heat medium HC introduced from the second introduction pipe 55 into the heat medium introduction portion 53 is distributed to each of the plurality of second introduction ports 30 in the second introduction space S2. The heat medium HC is introduced from each of the second inlets 30 into the heat medium flow paths 31 and flows through the second flow paths 36 . In the present embodiment, the second flow paths 36 are also formed along the Y direction so as to match the first flow paths 22, but the flow direction of the heat medium HC is opposite to the flow direction of the reaction fluid M.

Due to the circulation of the reactant fluid M and the heat medium HC, heat is exchanged between the reactant fluid M and the heat medium HC in the heat exchange section 3, and the reactant fluid M is heated. In the first flow path 22, the reactant fluid M undergoes an endothermic reaction at the reaction temperature in combination with the reaction promoting action of the first catalyst 41, and the product P is produced. The product P is discharged from the first discharge port 21 to the first recovery space S3 in the product recovery section 49 through the first confluence channel 23 .

Here, if the fluid discharged from the first discharge port 21 contains, in addition to the product P produced in the reaction flow path 17, reaction raw materials that did not contribute to the production of the product P. There is also Therefore, if no countermeasures are taken, such a fluid containing the remaining reaction raw materials and the product P will be discharged to the outside of the reactor 1 as it is.

On the other hand, in this embodiment, the second catalyst body 42 is provided inside the first recovery space S3 of the product recovery section 49 . Further, the fluid discharged into the first collection space S3 is kept at a high temperature because it has just been discharged from the first discharge port 21 . Therefore, the reaction raw materials that have not contributed to the production of the product P in the reaction flow path 17 are again promoted in the first recovery space S3 by self-heat. Therefore, in the fluid discharged from the product recovery unit 49 to the outside of the reaction device 1 through the first discharge pipe 51, the residual rate of the reaction raw material that did not contribute to the production of the product P is Lower than when not used.

The heat medium HC that has flowed through the second flow path 36 and has been used for heat exchange is discharged from the second discharge port 35 to the second recovery space S4 in the heat medium recovery section 57 through the second confluence flow path 37. be done. The heat medium HC recovered in the second recovery space S4 is discharged to the outside of the reactor 1 through the second discharge pipe 59. As shown in FIG.

Next, the effects of the reactor 1 according to this embodiment will be described.

The reaction device 1 includes a first heat transfer body 7 having a first flow path 22 for circulating a first fluid containing a reaction raw material, and a first heat transfer body 7 stacked on the first heat transfer body 7 and used for heat exchange with the first fluid. and a second heat transfer body 9 having a second flow path 36 for circulating the second fluid. The reaction apparatus 1 has a first recovery space S3 facing a first discharge port 21 communicating with a first flow path 22 in the first heat transfer body 7, and the endothermic reaction of the reaction raw material causes the first flow path 22 to A product recovery unit 49 for recovering the produced product P is provided. The reaction device 1 also includes a catalyst installed in the product recovery section 49 and promoting the endothermic reaction of the reaction raw material remaining in the first flow path 22 and discharged to the first recovery space S3.

Here, the first fluid corresponds to the reaction fluid M in this embodiment. The second fluid corresponds to the heat medium HC in this embodiment. Note that, as another embodiment, for example, the reactor of the present disclosure can be applied even when both the first fluid and the second fluid are reaction fluids.

In this embodiment, the catalyst such as the second catalyst body 42 is provided in the first recovery space S3 of the product recovery section 49, so that it does not contribute to the production of the product P in the reaction flow path 17. Reaction acceleration is again performed on the reaction raw material in the first recovery space S3. That is, when the reactor 1 as a whole is viewed, a larger amount of the product P is obtained compared to the case where a catalyst such as the second catalyst body 42 is not used. In particular, according to the present embodiment, there is no need to increase the temperature, flow rate, etc. of the heat medium HC used for heat exchange in the heat exchange section 3 in order to approach the equilibrium composition. On the other hand, when the amount of the product P produced when the catalyst such as the second catalyst 42 is not used is the desired amount, the catalyst such as the second catalyst 42 is used as in the present embodiment. Thus, the temperature and flow rate of the heat medium HC can be reduced. In addition, the temperature of the product P discharged from the reactor 1 is lowered as compared with the case where a catalyst such as the second catalyst body 42 is not used. For example, installation of a heat removal/cooling mechanism for lowering the temperature of the product P from the point at which it is discharged from the reactor 1 is required due to some restrictions in the process or equipment design on the downstream side of the reactor 1. Sometimes. In such a case, according to this embodiment, it is possible to reduce the load on the mechanism and relax the design conditions.

Thus, according to the present embodiment, it is possible to provide the reaction apparatus 1 that is advantageous for more effectively utilizing the amount of heat given for the reaction.

The reactor 1 may also include a second catalyst body 42 having a body containing a catalyst. In this case, the product recovery part 49 may have a connection part 52 including an opening 52a that accommodates the main body in the first recovery space S3. Further, the second catalyst body 42 may have a flange portion 43 attached to the connection portion 52 in a state in which the body portion is accommodated in the first recovery space S3.

According to such a reaction apparatus 1, work such as attachment or detachment of the second catalyst body 42 by an operator is facilitated.

The reactor 1 may also include a second catalyst body 42 having a body containing a catalyst. In this case, the product recovery section 49 may have a first discharge pipe 81 for discharging the product P to the external pipe 83 . Further, the second catalyst body 42 may have a flange portion 43 attached to the first discharge pipe 81 in a state in which the body portion is accommodated in the first recovery space S3.

According to such a reaction apparatus 1, work such as attachment or detachment of the second catalyst body 42 by an operator is facilitated. Further, the product recovery section 49 can hold the second catalyst body 42 via the first discharge pipe 81 without providing the connection section 52 as described above.

Moreover, in the reactor 1 , the first discharge pipe 81 may have a first flange portion 81 b used for connection with the external pipe 83 . The external pipe 83 may have a second flange portion 83b connectable to the first flange portion 81b. In this case, the flange portion 43 may be clamped between the first flange portion 81b and the second flange portion 83b.

According to such a reaction apparatus 1, work such as attachment or detachment of the second catalyst body 42 by the operator can be performed in accordance with the work of connecting the first discharge pipe 81 and the external pipe 83. As a result, the work process can be simplified.

In addition, in the reactor 1, the main body may be cylindrical or columnar.

According to such a reaction apparatus 1 , it is possible to make it easier for the main body to enter the first recovery space S<b>3 of the product recovery section 49 from the connecting portion 52 and the first discharge pipe 81 . In addition, since a larger surface area can be secured for the portion of the main body facing the first recovery space S3, the reaction by the catalyst in the first recovery space S3 can be further accelerated.

In addition, in the reactor 1, the main body may have a structural material that supports a catalyst.

According to such a reaction device 1, since the catalyst is supported on the structural material, the entire main body and the entire second catalyst body 42 are strengthened. Therefore, for example, the second catalyst body 42 can easily retain the catalyst in the first recovery space S3 for a long period of time. In addition, for example, when an operator attaches or detaches the second catalyst body 42, the second catalyst body 42 is less likely to be damaged.

Moreover, in the reactor 1, the catalyst may be porous. Here, the body portion containing the porous catalyst is, for example, the fifth body portion 74 .

According to such a reaction device 1, the main body may be composed of a single catalyst without using a structural material for supporting the catalyst, for example. Further, when the catalyst is porous, the contact area with the fluid in the first recovery space S3 increases, so that the reaction by the catalyst in the first recovery space S3 can be promoted more.

Moreover, in the reactor 1, the catalyst may be in the form of pellets. In this case, the main body may have a cylindrical body that accommodates the pellet-shaped catalyst. Here, the body portion is, for example, the seventh body portion 76 .

According to such a reactor 1, for example, when replacing a used catalyst with a new catalyst, it is enough to replace the pellet-shaped catalyst 76a accommodated in the cylinder. Therefore, it is not necessary to prepare a large number of main bodies in which the catalyst is supported on the structural material. In addition, when the pellet-shaped catalyst 76a is accommodated in the cylindrical body, there are many gaps between the catalysts, and the contact area with the fluid in the first recovery space S3 increases. The catalytic reaction in S3 can be promoted more.

In addition, in the reaction device 1, the structural material may be tubular when the main body is tubular, and may have a plurality of through-holes penetrating between the outside and inside of the cylinder.

According to such a reaction apparatus 1, the fluid in the first recovery space S3 can move back and forth between the outside and the inside of the cylindrical structural member through the plurality of through holes. easier to contact.

Further, in the reactor 1, the structural material may include a honeycomb structure having a honeycomb-shaped cross section. Here, the body portion is, for example, the second body portion 71 .

The honeycomb structure 71a has a large surface area as a whole while securing a large spatial area. Therefore, according to such a reaction device 1, for example, by supporting the catalyst on the entire surface of the structural material, the contact area with the fluid in the first recovery space S3 is reduced compared to the case of the first body portion 70. can be widened.

Further, in the reactor 1, the structural material may include a corrugated structure formed by rolling a corrugated plate having a wavy cross section into a cylindrical shape. Here, the body portion is, for example, the third body portion 72 .

The corrugated structure 73a has a large surface area as a whole while securing a large spatial area. Therefore, according to such a reaction device 1, for example, by supporting the catalyst on the entire surface of the structural material, the contact area with the fluid in the first recovery space S3 is reduced compared to the case of the first body portion 70. can be widened.

The first catalyst body 41 installed in the reaction flow path 17 may be a corrugated plate-shaped rod having a circularly curved wavy cross section, as described above. Therefore, when adopting the first catalyst body 41 which is a corrugated plate-shaped rod, the corrugated plate constituting the structural material of the first catalyst body 41 is diverted and the corrugated plate is rolled into a cylindrical shape. Therefore, it may be used as a structural material for the third body portion 72 . In other words, when both the first catalyst 41 and the second catalyst 42 are employed in the reaction device 1, the substrates, which are the structural materials of the first catalyst 41 and the second catalyst 42, are separately used. It also has the advantage of not requiring any preparation.

Moreover, in the reactor 1, the structural material may be cylindrical or rod-shaped. In this case, the main body may include a plurality of the tubular or rod-shaped structural members. Here, the body portion is, for example, the sixth body portion 75 .

According to such a reaction apparatus 1, for example, when there are a plurality of cylindrical or rod-shaped structural members supporting a catalyst in advance, these structural members can be assembled into one bundle to easily A main body can be configured.

Moreover, in the reactor 1, the structural material may include a plurality of disks. In this case, the main body may include a holding body that holds a plurality of discs arranged side by side in the extending direction of the cylindrical or columnar main body. Here, the body portion is, for example, the eighth body portion 77 .

According to such a reaction apparatus 1, for example, when there are a plurality of structural members such as the disk body 77a on which a catalyst is supported in advance, the main body portion can be easily can be configured.

In addition, in the reactor 1, the structural material may be a plate structure extending in a spiral shape in accordance with the extending direction of the cylindrical or columnar main body. Here, the body portion is, for example, the ninth body portion 78 .

According to such a reaction apparatus 1, for example, the plate structure 78a supporting a catalyst in advance is held by the holder 78b via a plurality of support rods 78c protruding from the holder 78b, so that the main body can be easily can be configured. In particular, when the plate structure 78a has a spiral shape, the plate structure 78a can define the flow direction of the fluid in the first recovery space S3 in the extending direction according to the spiral shape. Therefore, according to the reactor 1, the plate structure 78a can facilitate the flow of the fluid in a desired direction, for example, the first discharge pipe 80, while promoting the reaction by the catalyst.

Moreover, in the reactor 1 , the main body may face the first discharge port 21 .

According to such a reaction apparatus 1, the fluid containing the product P discharged from the first discharge port 21 collides with the main body, so that the reaction by the catalyst in the first collection space S3 can be further promoted. .

(Second embodiment)
Next, a reactor according to a second embodiment of the present disclosure will be described. In the first embodiment, the reaction apparatus 1 in which the second catalyst body 42 in which the catalyst is supported on the structural material is attached to the product recovery section 49 was exemplified. On the other hand, in the present embodiment, instead of the second catalyst body 42, the catalyst 46 is supported by the product recovery section 49 itself.

FIG. 11 is a partial cross-sectional view showing the product recovery section 49 in which the catalyst 46 is supported in the reactor 1 according to the second embodiment. In FIG. 11, a portion of the reaction apparatus 1 including the product recovery section 49 is drawn along the XY plane.

Catalyst components that can be used for the catalyst 46 are the same as those used for the first catalyst body 41 . In this case, the catalyst 46 may be carried on the inner wall of the product recovery section 49, for example, the entire inner wall side surface 49c. Moreover, although not shown, the inner wall upper surface 49a or the inner wall lower surface 49b of the product recovery section 49 may be carried.

According to the reactor 1 according to the present embodiment, the catalyst 46 faces the first recovery space S3. has the same effect as

(Third embodiment)
Next, a reactor according to a fourth embodiment of the present disclosure will be described. Further, in this embodiment, instead of the second catalyst 42 in the first embodiment, a large number of granular catalysts 48 are accommodated in the entire first recovery space S3.

FIG. 12 is a side view showing the configuration of the reactor 1 according to the third embodiment. In FIG. 12, the catalyst 48 in the first recovery space S3 is partially drawn as a set of points.

Catalyst components that can be used for the catalyst 48 are the same as those used for the first catalyst body 41 . In this case, the product recovery section 49 may have the connecting section 52 employed in the reactor 1 according to the first embodiment. In addition, the product recovery part 49 may have a connection part 58 including an opening 58a on the upper wall part of the product recovery part 49 in the Z direction, that is, on the inner wall upper surface 49a side of the product recovery part 49. good. In accordance with this, the product recovery unit 49 includes a first blank flange 54 that can be attached to the connection portion 52 using the bolt 65, and a second blank flange 54 that can be attached to the connection portion 58 using the bolt 65. 2 blank flanges 56 may be provided.

Here, when storing the catalyst 48 in the first recovery space S3, the operator attaches the lower first blank flange 54 to the connecting portion 52 and does not attach the second blank flange 56. The catalyst 48 can be introduced from the opening 58a of the connecting portion 58 of the . On the other hand, when removing the catalyst 48 from the first recovery space S3, the operator can easily remove the catalyst 48 by removing the first blank flange 54 from the connection portion 52 .

According to the reactor 1 according to the present embodiment, since the catalyst 46 exists in the first recovery space S3, the second catalyst 42 is used without using the second catalyst 42 in the first embodiment. It has the same effect as the case. Further, since the first recovery space S3 is filled with the catalyst 46, the fluid discharged into the first recovery space S3 always contacts the catalyst 48. As shown in FIG. Therefore, it is possible to further promote the reaction by the catalyst in the first recovery space S3.

(Other embodiments)
In the above embodiment, the case where the fluid containing the product P is discharged from one first discharge port 21 in one first heat transfer body 7 was illustrated, but there are a plurality of first discharge ports 21. It is possible. In this case, a plurality of product recovery units 49 are also present in accordance with the respective first discharge ports 21 . In this way, when there are a plurality of product recovery units 49 , the second catalyst body 42 as described above and the catalyst 46 or catalyst 48 based thereon may be installed in each product recovery unit 49 .

Although preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist thereof.

1 Reactor 7 First Heat Transfer Body 9 Second Heat Transfer Body 21 First Discharge Port 22 First Channel 36 Second Channel 42 Second Catalyst 43 Flange 46 Catalyst 48 Catalyst 49 Product Recovery Part 49c Inner Wall Side 52 connecting portion 52a opening 70 first main body 71 second main body 72 third main body 73 fourth main body 74 fifth main body 75 sixth main body 76 seventh main body 77 eighth main body 78 ninth main body Part 81 First discharge pipe HC Heat medium M Reaction fluid P Product S3 First recovery space

Claims (16)

a first heat transfer body having a first flow path for circulating a first fluid containing reaction raw materials;
a second heat transfer body laminated on the first heat transfer body and having a second flow path through which a second fluid used for heat exchange with the first fluid flows;
A product that has a recovery space facing an outlet communicating with the first flow path in the first heat transfer body and recovers a product produced in the first flow path by an endothermic reaction of the reaction raw material. a collection unit;
a catalyst that is installed in the product recovery unit and remains in the first flow path to promote an endothermic reaction of the reaction raw material discharged into the recovery space;
a catalyst body having a main body containing the catalyst ,
The product recovery part has a connection part including an opening for accommodating the main body part in the recovery space,
The reaction device, wherein the catalyst body has a flange portion attached to the connection portion in a state in which the body portion is accommodated in the recovery space. a first heat transfer body having a first flow path for circulating a first fluid containing reaction raw materials;
a second heat transfer body laminated on the first heat transfer body and having a second flow path through which a second fluid used for heat exchange with the first fluid flows;
A product that has a recovery space facing an outlet communicating with the first flow path in the first heat transfer body and recovers a product produced in the first flow path by an endothermic reaction of the reaction raw material. a collection unit;
a catalyst that is installed in the product recovery unit and remains in the first flow path to promote an endothermic reaction of the reaction raw material discharged into the recovery space;
a catalyst body having a main body containing the catalyst ,
The product recovery unit has a discharge pipe for discharging the product to an external pipe,
The reaction device, wherein the catalyst body has a flange portion attached to the discharge pipe in a state where the main body portion is accommodated in the recovery space. The discharge pipe has a first flange portion used for connection with the external pipe,
The external pipe has a second flange portion connectable to the first flange portion,
3. The reactor according to claim 2 , wherein the flange portion is sandwiched between the first flange portion and the second flange portion and fastened. 4. The reactor according to any one of claims 1 to 3 , wherein said main body is cylindrical or columnar. 5. The reaction device according to claim 4 , wherein the main body has a structural material that supports the catalyst. 5. The reactor of claim 4 , wherein the catalyst is porous. The catalyst is in the form of pellets,
5. The reactor according to claim 4 , wherein the main body has a cylindrical body that accommodates the pellet-shaped catalyst. 6. The reaction device according to claim 5 , wherein said structural member is cylindrical when said main body is cylindrical, and has a plurality of through holes penetrating between the outside and inside of the cylinder. 6. The reactor according to claim 5 , wherein the structural material includes a honeycomb structure having a honeycomb-shaped cross section. 6. The reactor according to claim 5 , wherein the structural material includes a corrugated structure formed by rolling a corrugated plate having a wavy cross section into a cylindrical shape. The structural material is cylindrical or rod-shaped,
6. The reactor according to claim 5 , wherein said main body includes a plurality of said cylindrical or rod-shaped structural members. The structural material includes a plurality of disc bodies,
6. The reaction apparatus according to claim 5 , wherein said main body includes a holder that holds said plurality of discs side by side in an extending direction of said main body. 6. The reactor according to claim 5 , wherein said structural member is a plate structure extending in a spiral shape in accordance with the extending direction of said cylindrical or columnar body. 14. The reactor according to any one of claims 1 to 13 , wherein the main body faces the outlet. a first heat transfer body having a first flow path for circulating a first fluid containing reaction raw materials;
a second heat transfer body laminated on the first heat transfer body and having a second flow path through which a second fluid used for heat exchange with the first fluid flows;
A product that has a recovery space facing an outlet communicating with the first flow path in the first heat transfer body and recovers a product produced in the first flow path by an endothermic reaction of the reaction raw material. a collection unit;
a catalyst that is installed in the product recovery unit and promotes an endothermic reaction of the reaction raw material that remains in the first flow path and is discharged to the recovery space;
The product recovery section is a conduit section having a shape in which the direction of extension of the recovery space is along the lamination direction of the first heat transfer body and the second heat transfer body,
The reaction device, wherein the catalyst is supported on an inner wall of the product recovery section facing the recovery space. a first heat transfer body having a first flow path for circulating a first fluid containing reaction raw materials;
a second heat transfer body laminated on the first heat transfer body and having a second flow path through which a second fluid used for heat exchange with the first fluid flows;
A product that has a recovery space facing an outlet communicating with the first flow path in the first heat transfer body and recovers a product produced in the first flow path by an endothermic reaction of the reaction raw material. a collection unit;
a catalyst that is installed in the product recovery unit and promotes an endothermic reaction of the reaction raw material that remains in the first flow path and is discharged to the recovery space;
The product recovery section is a conduit section having a shape in which the direction of extension of the recovery space is along the lamination direction of the first heat transfer body and the second heat transfer body,
The reaction device, wherein the catalyst is a granular material housed in the recovery space.

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