JP6357882B2 - Separation device - Google Patents

Description

  The present invention relates to a separation apparatus for separating a raw material liquid including a low-boiling component and a high-boiling component into a distillate fluid and a bottom liquid.

  Conventionally, as a device for distillation of alcoholic beverages and petrochemical products, removal of ammonia, and recovery of carbon dioxide, a plurality of shelves are provided at predetermined intervals in a vertical direction in a cylindrical tower, A plate tower has been developed in which contact between a gas and a liquid (gas-liquid contact) is performed stepwise (for example, Patent Document 1). In the plate tower, the gas phase containing a relatively large amount of low-boiling components is sent to the upper stage, and the liquid phase containing a relatively large amount of high-boiling components flows down to the lower stage. It is configured so that equilibrium is established.

  In such a shelf tower, due to the structure of the shelf, it is necessary to secure a distance between the shelves (height of the step) of at least several centimeters to several tens of centimeters, and the number of steps is increased in order to improve separation performance. Then, there is a problem that the device itself becomes high in the vertical direction. In addition, the plate tower has a problem that the structure in the tower is complicated and the apparatus itself requires a large cost.

  Therefore, a porous sheet made of metal is laid on the bottom surface of the bowl-shaped flow path extending in the horizontal direction, and the raw material liquid is introduced into the porous sheet from the center of the flow path. A technique for distilling a raw material liquid by heating one of the sheets and cooling the other is disclosed (for example, Non-Patent Document 1). In such a technique, the height of the gas layer formed above the porous sheet and through which the gas generated by heating the raw material liquid flows is about several millimeters, which is about 1/10 shorter than the plate tower. In addition, the time to reach gas-liquid equilibrium can be greatly shortened by contacting the gas and liquid on the surface of the porous sheet. Even if the device is downsized compared to the plate tower, the boiling point is low. It becomes possible to maintain or improve the separation performance of components and high-boiling components.

Japanese Patent Laid-Open No. 6-86901

A. Sundberg et al, Novel micro-distillation column for process development, Chemical Engineering Research and Design 87 (2009) 705-710

  However, in the technique of Non-Patent Document 1, the liquid is propelled only by the capillary phenomenon, that is, only by the surface tension of the liquid such as the raw material liquid. There was a problem that the speed was slow. Therefore, there is a demand for the development of a separation apparatus that improves the processing speed while reducing the size of the apparatus.

  Accordingly, an object of the present invention is to provide a separation apparatus capable of improving the processing speed while maintaining a predetermined separation performance while downsizing the apparatus.

In order to solve the above problems, the separation apparatus of the present invention is a raw material liquid comprising a low-boiling component and a high-boiling component having a boiling point higher than that of the low-boiling component. Is a separation device that separates a distillate fluid and a bottoms liquid having a higher concentration of components having a higher boiling point than the raw material liquid, and a distillate fluid discharge port for discharging the distillate fluid is provided on one end side. A liquid-liquid contact channel provided at the other end of the bottom liquid discharge port for discharging water, and a raw material liquid provided between the distillate fluid discharge port and the bottom liquid discharge port in the gas-liquid contact channel Provided between the raw material liquid introduction part for introducing the raw material liquid into the gas-liquid contact channel through the introduction port and from the raw material liquid introduction port to the bottoms discharge port, Provided between the reboiler that heats above the boiling point of the gas and the raw material liquid inlet to the distillate fluid outlet, and the gas in the gas-liquid contact flow path, Comprising a capacitor to cool to below the boiling point component, the bottom surface of the gas-liquid contact flow path is inclined vertically downward toward the distillate fluid outlet in bottom liquid outlet, the gas-liquid contact flow path The liquid layer in which liquid flows from the distillate fluid discharge port side to the bottom liquid discharge port and the gas layer in which gas flows from the bottom liquid discharge port side to the distillate fluid discharge port above the liquid layer are formed. It is characterized by being.

  In addition, the upper surface of the gas-liquid contact channel may be inclined vertically downward from the distillate fluid outlet to the bottoms outlet.

  In addition, the gas-liquid contact channel is provided with one or more ribs extending from the outer wall constituting the bottom surface of the gas-liquid contact channel into the gas-liquid contact channel and extending from the distillate fluid discharge port side to the bottom liquid discharge port side, The liquid may flow through a partitioned flow path that is a flow path partitioned by ribs.

  In addition, a baffle plate may be provided between the bottom discharge outlet and the raw material inlet for sealing the gas layer and restricting the movement of gas to the bottom discharge outlet.

  Further, in the gas-liquid contact flow path, the gas is cooled by exchanging heat between the gas flowing from the raw material liquid inlet to the distillate fluid outlet and the raw material liquid before being introduced into the raw material liquid inlet. In addition, a heat exchanger for preheating the raw material liquid may be further provided.

  In addition, the outer wall constituting the bottom surface of the gas-liquid contact channel is the inner surface of the outer wall constituting the bottom surface from the raw material liquid inlet to the bottom liquid outlet, and the bottom surface from the raw material liquid inlet to the distillate fluid outlet. It is good also as wettability being larger than the inner surface of the outer wall to comprise.

  Moreover, it is good also as providing one or more gas layer protrusion parts which protruded in the gas-liquid contact flow path from the inner surface of the outer wall which contacts the gas layer of a gas-liquid contact flow path.

  Further, one or a plurality of liquid layer protrusions protruding from the inner surface of the outer wall contacting the liquid layer of the gas-liquid contact channel into the gas-liquid contact channel may be provided.

  The reboiler may be made of a material that generates heat when energized, and may include at least an outer wall that forms a bottom surface from the raw material liquid inlet to the bottom liquid outlet.

  According to the present invention, it is possible to improve the processing speed while maintaining a predetermined separation performance while downsizing the apparatus.

It is a figure for demonstrating the schematic structure of the separation apparatus concerning 1st Embodiment. It is a disassembled perspective view of the separation unit concerning a 1st embodiment. It is sectional drawing of the isolation | separation unit concerning 1st Embodiment. It is a figure explaining the flow of the liquid and gas in a gas-liquid contact flow path. It is a figure explaining the liquid layer and gas layer in a gas-liquid contact flow path. It is a figure for demonstrating the separation apparatus concerning 2nd Embodiment. It is a figure for demonstrating the separation apparatus concerning 3rd Embodiment. It is a figure for demonstrating the separation apparatus concerning a 1st modification. It is a disassembled perspective view of the separation unit concerning the 2nd modification. It is sectional drawing of the separation unit concerning the 2nd modification. It is a figure for demonstrating the reboiler concerning a 3rd modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment: separation device 100)
FIG. 1 is a diagram for explaining a schematic configuration of a separation apparatus 100 according to the first embodiment. In FIG. 1 of the present embodiment, an X axis (horizontal direction), a Y axis (horizontal direction), and a Z axis (vertical direction) that intersect perpendicularly are defined as illustrated. Further, in FIG. 1, the flow of liquid is indicated by solid arrows, and the flow of signals is indicated by broken arrows.

  The separator 100 is a raw material liquid containing a low boiling point component (for example, methanol) and a high boiling point component (for example, water) having a higher boiling point than the low boiling point component. Is a device that separates a distillate fluid (a distillate or a distillate gas) from a distillate having a higher boiling point than the raw material liquid. Here, the structure which isolate | separates a raw material liquid into a distillate and a bottoms is demonstrated.

  As shown in FIG. 1, the separation device 100 of the present embodiment includes a separation unit 110, a raw material liquid introduction unit 120, a reboiler 130, a condenser 140, a distillate fluid recovery unit 150, and a bottoms liquid recovery unit 160. And a temperature measurement unit 170 and a control unit 180.

  In the separation unit 110, an outer wall is configured by a bottom wall 210, an upper wall 212, and a side wall 214, and a space defined by the bottom wall 210, the upper wall 212, and the side wall 214 serves as a gas-liquid contact flow path R. That is, the inner surface of the bottom wall 210 is the bottom surface 210a of the gas-liquid contact flow channel R, the inner surface of the upper wall 212 is the upper surface 212a of the gas-liquid contact flow channel R, and the inner surface of the side wall 214 is the side surface 214a of the gas-liquid contact flow channel R. It becomes. Here, the bottom wall 210, the top wall 212, and the side wall 214 are made of a metal material such as stainless steel, for example.

  A distillate discharge port 220 for discharging the distillate is provided on one end side of the bottom surface 210a (bottom wall 210) of the gas-liquid contact channel R, and the bottom discharge is discharged on the other end side. A bottom discharge outlet 222 is provided. Further, in the gas-liquid contact flow path R, a raw material liquid inlet 224 is provided between the distillate fluid outlet 220 and the bottoms outlet 222 on the bottom surface 210a.

  In the present embodiment, the separation unit 110 is inclined vertically downward, for example, about 2.5 degrees from one end side to the other end side (left side to right side in FIG. 1). That is, the bottom surface 210a and the top surface 212a of the gas-liquid contact flow path R are inclined vertically downward (Z direction in FIG. 1) from the distillate fluid discharge port 220 toward the bottom liquid discharge port 222. Therefore, the raw material liquid introduced into the gas-liquid contact channel R from the raw material liquid inlet 224 of the separation unit 110 flows from one end side toward the other end side, that is, toward the bottom liquid discharge port 222. Become.

  FIG. 2 is an exploded perspective view of the separation unit 110 according to the first embodiment, and FIG. 3 is a cross-sectional view of the separation unit 110 according to the first embodiment. 3A is a cross-sectional view taken along the line IIIa-IIIa when the upper wall 212 and the side wall 214 are closed in FIG. 2, and FIG. 3B is a view showing the upper wall 212 and the side wall 214 closed in FIG. The IIIb-IIIb sectional view taken on the line is shown.

  As shown in FIGS. 2 and 3, the separation unit 110 is erected in the gas-liquid contact flow path R from the outer wall (bottom wall 210) constituting the bottom surface 210 a of the gas-liquid contact flow path R, and the distillate fluid. A plurality of ribs 230 extending from the discharge port 220 side to the bottoms discharge port 222 side are provided (here, six ribs are juxtaposed in the width direction). Accordingly, a liquid such as a raw material liquid (indicated by cross-hatching in FIG. 3A) introduced into the gas-liquid contact channel R from the raw material liquid inlet 224 is a rib 230 as shown in FIG. Will flow through the partitioned flow path DR, which is a flow path partitioned by. That is, a liquid layer that is a liquid layer is formed in the partition channel DR. Moreover, the gas in the gas-liquid contact flow path R flows above the liquid layer. Hereinafter, the gas layer formed above the liquid layer is referred to as a gas layer. Specific configurations of the liquid layer and the gas layer will be described in detail later.

  Here, the dimensional relationship of the gas-liquid contact flow path R will be described. The width drb (distance between the base ends of the ribs 230) of the partition flow path DR is, for example, about 1 mm. The width drt of the upper surface (distance between the tips of the ribs 230) is, for example, about 2 mm, and the height drh (height of the ribs 230) of the partition channel DR is, for example, about 3 mm. The distance sh between the tip of the rib 230 and the upper surface 212a is, for example, about 100 μm to 10 mm (here, 1 mm). Further, the length L in the flow direction of the gas-liquid contact flow path R (the length from the distillate fluid discharge port 220 to the bottom discharge port 222, see FIG. 2) is, for example, 300 mm.

  In addition, as shown in FIGS. 2 and 3B, the separation unit 110 seals the gas layer between the bottom liquid discharge port 222 and the raw material liquid inlet port 224 to seal the bottom liquid discharge port 222. A baffle plate 240 that restricts the movement of the gas to is provided. In the present embodiment, the baffle plate 240 is located on the outer wall (upper wall 212) constituting the upper surface 212a of the gas-liquid contact flow path R from the upper wall 212 from the bottom liquid discharge port 222 toward the raw material liquid inlet 224. While standing up in the gas-liquid contact flow path R, the tip 240a is immersed in a liquid layer (indicated by cross-hatching in FIG. 3B), thereby sealing the gas layer.

  Referring back to FIG. 1, the raw material liquid introduction unit 120 is configured by, for example, a pump, and introduces the raw material liquid from the raw material liquid supply source 122 to the gas-liquid contact channel R through the raw material liquid inlet 224.

  The reboiler 130 is composed of, for example, an electric heater and is outside the outer walls (the bottom wall 210, the upper wall 212, and the side wall 214) that constitute the gas-liquid contact flow path R, and is discharged from the raw material liquid inlet 224. Provided up to the discharge port 222. The reboiler 130 heats the gas and liquid in the gas-liquid contact flow path R to the boiling point of the low boiling point component or more according to a control command from the control unit 180 described later.

  The capacitor 140 is formed of, for example, a fan, and is provided outside the outer wall constituting the gas-liquid contact channel R and between the raw material liquid inlet 224 and the distillate fluid outlet 220. Capacitor 140 cools the gas and liquid in gas-liquid contact flow path R to below the boiling point of the low boiling point component.

  The distillate fluid recovery unit 150 is constituted by, for example, a pump, and sends distillate from the separation unit 110 (gas-liquid contact flow path R) to the distillate reservoir 152 through the distillate fluid outlet 220.

  The bottoms liquid recovery unit 160 is constituted by, for example, a pump, and sends bottoms liquid from the separation unit 110 (gas-liquid contact flow path R) to the bottoms liquid storage part 162 through the bottoms liquid discharge port 222.

  In the gas-liquid contact flow path R, the temperature measuring unit 170 is configured such that the temperature between the raw material liquid inlet 224 and the bottom liquid outlet 222 and the temperature between the distillate fluid outlet 220 and the raw liquid inlet 224 are measured. Measure each.

  The control unit 180 is composed of a semiconductor integrated circuit including a CPU (central processing unit), reads programs and parameters for operating the CPU itself from the ROM, and cooperates with a RAM as a work area and other electronic circuits. Thus, the entire separation apparatus 100 is managed and controlled. In the present embodiment, the control unit 180 has a low boiling point based on the temperature measured by the temperature measurement unit 170 so that the temperature of the gas-liquid contact flow path R from the raw material liquid inlet 224 to the bottom liquid outlet 222 is low. The reboiler 130 is controlled so as to be equal to or higher than the boiling point of the component. Further, based on the temperature measured by the temperature measuring unit 170, the control unit 180 determines that the temperature of the gas-liquid contact flow path R from the distillate fluid discharge port 220 to the raw material liquid inlet 224 is the boiling point of the low boiling point component. The capacitor 140 is controlled so as to be less than 1. Further, the control unit 180 drives and controls the raw material liquid introduction unit 120, the distillate fluid recovery unit 150, and the bottoms liquid recovery unit 160.

(Flow of liquid and gas in the gas-liquid contact flow path R)
FIG. 4 is a diagram for explaining the flow of liquid and gas in the gas-liquid contact channel R. In FIG. 4, the flow of liquid is indicated by white arrows, and the flow of gas is indicated by solid black arrows. Here, in order to facilitate understanding, description of the rib 230 (partition flow path DR) and the baffle plate 240 is omitted.

  As described above, the bottom surface 210a of the gas-liquid contact channel R is inclined vertically downward from the distillate fluid outlet 220 toward the bottoms outlet 222, as shown in FIG. The raw material liquid introduced from the raw material liquid inlet 224 flows through the gas-liquid contact flow path R (partition flow path DR) toward the bottom discharge outlet 222 by its own weight.

  Since the reboiler 130 is provided between the raw material liquid inlet 224 and the bottom liquid outlet 222, the raw material liquid flows in the gas-liquid contact channel R while flowing toward the bottom liquid outlet 222. It passes through a channel heated by the reboiler 130 (hereinafter simply referred to as “heating channel HR”). Then, as shown in FIG. 4B, the raw material liquid is heated to the boiling point of the low boiling point component or higher when passing through the heating flow path HR, and the gas containing a large amount of the low boiling point component from the raw material liquid. Will be generated.

  FIG. 5 is a diagram illustrating a liquid layer and a gas layer in the gas-liquid contact channel R. In FIG. 5, for easy understanding, the gas-liquid contact flow path R is not inclined, and the distance in the height direction between the liquid layer (liquid layer) and the gas layer (gas layer) is shown. Are shown equally.

  As described above, when the raw material liquid is heated in the heating flow path HR, gas is generated from the raw material liquid. Since the heating flow path HR is heated by the reboiler 130 over the entire area, the amount of gas generated increases in the heating flow path HR toward the bottom discharge outlet 222. For this reason, in the heating flow path HR, a pressure difference is generated between the raw material liquid inlet 224 side and the bottom liquid outlet 222 side. That is, in the heating channel HR, the pressure on the bottom liquid discharge port 222 side is higher than that on the raw material liquid inlet port 224 side. Thereby, the gas produced | generated in the heating flow path HR will flow toward the reverse direction of the flow of a liquid, ie, toward the raw material liquid inlet 224 (distilled fluid outlet 220).

  The gas flowing from the heating flow path HR toward the distillate fluid outlet 220 will be described with reference to FIG. 4 again. A capacitor 140 is provided between the raw material liquid inlet 224 and the distillate fluid outlet 220. Therefore, the gas flowing from the heating channel HR toward the distillate fluid outlet 220 is a channel that is cooled by the condenser 140 in the gas-liquid contact channel R (hereinafter simply referred to as “cooling channel CR”). Will pass. Then, as shown in FIG. 4 (c), the gas is cooled below the boiling point of the low boiling point component when passing through the cooling channel CR, and the low boiling point component and the high boiling point component are condensed to form a liquid. It becomes. Then, the liquid generated in the cooling channel CR flows toward the heating channel HR. That is, in the separation device 100 according to the present embodiment, the low-boiling point component and the high-boiling point component condensed by the condenser 140 return to the heating flow path HR. And it becomes possible to improve the separation performance of high boiling point components.

  And the liquid condensed in the area | region where the distillate fluid discharge port 220 is distribute | arranged among the cooling flow paths CR will be discharged | emitted outside through the distillate fluid discharge port 220 as a distillate. In addition, the liquid that has not evaporated in the heating flow path HR is discharged to the outside through the bottom discharge outlet 222 as bottom discharge.

  Thus, in the gas-liquid contact flow path R, the liquid layer LL in which the liquid flows from the distillate fluid discharge port 220 side to the bottoms discharge port 222, and from the bottoms discharge port 222 side above the liquid layer LL. A gas layer GL through which gas flows to the distillate fluid discharge port 220 side is formed (see FIG. 5A). And gas-liquid contact arises in the boundary of the liquid layer LL and the gas layer GL, and the gas-liquid contact flow path R will be in a gas-liquid equilibrium state.

  As described above, in the present embodiment, the height of the gas-liquid contact flow path R is as short as about 4 mm, so the height of the liquid layer LL and the gas layer GL is as short as 4 mm or less. Here, the relationship between the height of the gas layer GL and the speed at which gas-liquid equilibrium is reached will be described with reference to FIG. 5B. Since the low boiling point component evaporates from the liquid layer LL, in the gas layer GL, In the boundary layer σg in the vicinity of the liquid surface with the liquid layer LL, the concentration of the low boiling point component is high, and the concentration of the low boiling point component is low because it is separated from the liquid layer LL. Therefore, in the gas layer GL, the low boiling point component diffuses in a direction away from the liquid layer LL. Here, the shorter the height of the gas layer GL, the shorter the time required for diffusion. Similarly, as shown in FIG. 5C, since the low boiling point component is more easily evaporated than the high boiling point component, in the liquid layer LL, in the boundary layer σl in the vicinity of the liquid surface with the gas layer GL, The concentration of the low boiling point component is high, and the concentration of the low boiling point component is low because it is separated from the gas layer GL. Therefore, in the liquid layer LL, the low boiling point component diffuses in a direction away from the gas layer GL. Again, the shorter the height of the liquid layer LL, the shorter the time required for diffusion.

  That is, the shorter the height of the gas layer GL and the liquid layer LL, the shorter the time required for diffusion, and the shorter the time to reach gas-liquid equilibrium. That is, the speed at which gas-liquid equilibrium is reached increases as the height of the gas layer GL and the liquid layer LL becomes shorter, so the height of the gas layer GL and the liquid layer LL is made shorter (for example, 10 mm or less). The time until the vapor-liquid equilibrium is reached can be extremely shortened as compared with the conventional plate tower. Therefore, it is possible to maintain or improve the separation performance of the low boiling point component and the high boiling point component while downsizing the apparatus as compared with the conventional plate tower.

  Further, in the conventional plate tower, the concentration ratio between the low boiling point component and the high boiling point component in the liquid layer and the gas layer is constant in one space (stage), so that the separation performance in one space is predetermined. The value was limited. However, in the separation apparatus 100 according to the present embodiment, in the gas-liquid contact flow path R, the liquid layer LL and the gas layer GL in which the concentration ratio between the low boiling point component and the high boiling point component continuously changes in the fluid flow direction. Can be continuously brought into contact with each other to achieve a gas-liquid equilibrium state, so that even in a single space, the separation performance of a low-boiling component and a high-boiling component can be improved compared to a plate tower. It becomes possible.

  As described above, according to the separation device 100 according to the present embodiment, the bottom surface 210a of the gas-liquid contact flow path R is inclined vertically downward from the distillate fluid discharge port 220 toward the bottoms discharge port 222. With this simple configuration, it is possible to smoothly guide the raw material liquid and the liquid condensed in the cooling channel CR to the heating channel HR. Thereby, compared with the separation apparatus using the conventional porous sheet, it becomes possible to improve a processing speed.

  In the present embodiment, the upper surface 212a of the gas-liquid contact channel R is also inclined downward in the vertical direction from the distillate fluid discharge port 220 toward the bottom liquid discharge port 222. That is, it is inclined vertically upward from the bottom discharge outlet 222 toward the distillate outlet 220. Since the gas has a rising property, the upper surface 212a of the gas-liquid contact flow path R is generated in the heating flow path HR by inclining vertically upward from the bottom liquid discharge port 222 toward the distillate fluid discharge port 220. It is possible to smoothly guide the gas to the cooling channel CR.

  Further, as described above, in the present embodiment, the raw material liquid and the liquid condensed in the cooling channel CR are configured to flow in the partition channel DR. When the flow path width in which the liquid flows in the gas-liquid contact flow path R is large, the flow velocity of the liquid flowing on the side surface side of the gas-liquid contact flow path R and the center side of the gas-liquid contact flow path R are flowed by the surface tension of the liquid. The difference from the liquid flow rate becomes large. Therefore, by providing the rib 230 and forming the partition channel DR in which the gas-liquid contact channel R is divided into a plurality of portions and the channel width is shortened, the flow velocity of the liquid flowing on the side surface side of the partition channel DR and the partition The difference from the flow velocity of the liquid flowing through the center of the flow channel DR can be reduced, and the flow velocity in the flow channel can be made uniform.

  Further, by providing the baffle plate 240 in the gas-liquid contact flow path R, the movement of gas from the gas layer GL to the bottom liquid discharge port 222 can be regulated. Thereby, almost all of the gas generated in the heating channel HR can be guided to the cooling channel CR.

(Second Embodiment: Separation Device 300)
In the first embodiment described above, the separation unit 110 itself (the bottom surface 210a of the gas-liquid contact flow path R) is inclined vertically downward from the distillate fluid discharge port 220 side toward the bottom liquid discharge port 222 side. The separation device 100 is described. However, even if the bottom surface of the gas-liquid contact flow path R is not inclined, the bottom surface between the raw material liquid inlet 224 and the bottom liquid discharge outlet 222 in the gas-liquid contact flow path R remains from the raw material liquid inlet 224. There is no limitation on the configuration as long as it is located below the bottom surface between the outlet fluid outlet 220. In the present embodiment, another configuration of the gas-liquid contact channel R will be described.

  FIG. 6 is a diagram for explaining a separation device 300 according to the second embodiment. In FIG. 6 of this embodiment, an X axis (horizontal direction), a Y axis (horizontal direction), and a Z axis (vertical direction) that intersect perpendicularly are defined as illustrated. In FIG. 6, the liquid flow is indicated by solid arrows, and the signal flow is indicated by broken arrows.

  As shown in FIG. 6, the separation apparatus 300 includes a separation unit 310, a raw material liquid introduction unit 120, a reboiler 130, a condenser 140, a distillate fluid recovery unit 150, a bottoms liquid recovery unit 160, and a temperature measurement. The separation unit 310 includes a bottom wall 320, an upper wall 212, a side wall 214, a distillate fluid discharge port 220, a bottoms discharge port 222, and a raw material. The liquid inlet 224, the rib 230, the baffle plate 240, and the dam plate 340 are comprised. In addition, about the structure substantially equal to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted, and the bottom wall 320 and the dam plate 340 from which a structure differs are demonstrated here.

  In the present embodiment, the inner surface of the bottom wall 320, that is, the bottom surfaces 320a and 320b of the gas-liquid contact flow path R extends in the horizontal direction (Y direction in FIG. 6). The bottom surface 320a from the raw material liquid inlet 224 to the bottom liquid outlet 222, that is, the bottom surface 320a of the heating flow path HR is the bottom surface 320b from the raw liquid inlet 224 to the distillate fluid outlet 220, that is, the cooling flow path. It is arranged below the bottom surface 320b of the CR (in the Z direction in FIG. 6).

  Therefore, a step SD is provided between the bottom surface 320a of the heating channel HR and the bottom surface 320b of the cooling channel CR.

  Thus, even if the bottom surfaces 320a and 320b of the gas-liquid contact channel R extend in the horizontal direction, the bottom surface 320a of the heating channel HR is arranged below the bottom surface 320b of the cooling channel CR. By providing the step SD, the raw material liquid introduced through the raw material liquid inlet 224 can be smoothly guided to the heating flow path HR.

  The height of the step SD (the difference in the vertical direction between the bottom surface 320a of the heating channel HR and the bottom surface 320b of the cooling channel CR) is about 1 mm, for example, and the raw material introduced from the raw material liquid inlet 224 The liquid is difficult or impossible to flow into the cooling flow path CR, and is dimensioned to flow into the heating flow path HR.

  Of the bottom surface 320b (bottom surface 320b of the cooling channel CR) from the raw material liquid inlet 224 to the distillate fluid discharge port 220, the bottom surface 320b (the top surface of the bottom wall 320) on the distillate fluid discharge port 220 side is used. A dam plate 340 is provided that stands in the gas-liquid contact flow path R from the bottom wall 320 and that has a tip protruding to the gas layer. The liquid cooled by the condenser 140 and generated in the cooling channel CR falls and flows to the bottom surface 320b of the cooling channel CR, but the bottom surface 320b of the present embodiment extends in the horizontal direction. , There is a risk of flowing into the distillate fluid outlet 220.

  Therefore, by providing the blocking plate 340, the situation where the liquid falling on the inner surface (bottom surface 320b) of the bottom wall 320 constituting the cooling flow path CR is discharged from the distillate fluid outlet 220 is condensed. It becomes possible to reliably return the liquid to the heating flow path HR. Thereby, it is possible to suppress a decrease in the concentration of the low boiling point component in the distillate fluid, that is, it is possible to suppress a decrease in the separation performance of the low boiling point component.

(Third embodiment: separation device 400)
In the first and second embodiments described above, in the gas-liquid contact flow path R, the bottom surface (the bottom surface of the heating flow path HR) between the raw material liquid inlet 224 and the bottoms discharge outlet 222 is the raw material liquid introduction. The configuration located below the bottom surface (bottom surface of the cooling channel CR) between the port 224 and the distillate fluid discharge port 220 has been described. However, if the raw material liquid introduced through the raw material liquid inlet 224 is difficult or impossible to flow into the cooling channel CR and can flow into the heating channel HR, the bottom surface of the heating channel HR and the cooling channel The CR bottom surface may be substantially equal in height.

  FIG. 7 is a diagram for explaining a separation device 400 according to the third embodiment. In FIG. 7 of this embodiment, an X axis (horizontal direction), a Y axis (horizontal direction), and a Z axis (vertical direction) that intersect perpendicularly are defined as illustrated. In FIG. 7, the liquid flow is indicated by solid arrows, and the signal flow is indicated by broken arrows.

  As shown in FIG. 7, the separation device 400 includes a separation unit 410, a raw material liquid introduction unit 120, a reboiler 130, a condenser 140, a distillate fluid recovery unit 150, a bottoms liquid recovery unit 160, and a temperature measurement. The separation unit 410 includes a bottom wall 420, an upper wall 212, a side wall 214, a distillate fluid discharge port 220, a bottoms discharge port 222, and a raw material. The liquid inlet 224, the rib 230, the baffle plate 240, and the dam plate 340 are comprised. In addition, about the structure substantially equal to 1st, 2nd embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted and the bottom wall 420 from which a structure differs is demonstrated here.

  In the present embodiment, the bottom wall 420 has a bottom surface 420 a from the raw material liquid inlet 224 to the bottom liquid outlet 222, that is, an inner surface of the bottom wall 420 constituting the bottom surface 420 a of the heating channel HR from the raw material liquid inlet 224. The wettability is greater than the bottom surface 420b up to the distillate fluid discharge port 220, that is, the inner surface of the bottom wall 420 constituting the bottom surface 420b of the cooling channel CR.

  Therefore, as shown in FIG. 7, the bottom surfaces 420a and 420b of the gas-liquid contact channel R are extended in the horizontal direction (Y direction in FIG. 7), and the bottom surface 420a of the heating channel HR and the cooling channel CR are extended. Even if the height in the vertical direction (Z direction in FIG. 7) with respect to the bottom surface 420b is substantially equal, the raw material liquid introduced through the raw material liquid inlet 224 is smoothly guided to the heating flow path HR. Can do.

  Specific means for making the wettability of the inner surface of the bottom wall 420 constituting the bottom surface 420a of the heating flow path HR larger than the wettability of the inner surface of the bottom wall 420 constituting the bottom surface 420b of the cooling flow path CR is, for example, heating This is done by forming the inner surface of the bottom wall 420 constituting the bottom surface 420a of the flow path HR with a material having higher wettability than the inner surface of the bottom wall 420 constituting the bottom surface 420b of the cooling flow path CR. For example, the inner surface of the bottom wall 420 constituting the bottom surface 420a of the heating channel HR may be made of metal, and the inner surface of the bottom wall 420 constituting the bottom surface 420b of the cooling channel CR may be made of polytetrafluoroethylene.

  Further, by performing plasma surface processing, the wettability of the inner surface of the bottom wall 420 constituting the bottom surface 420a of the heating channel HR is made larger than the wettability of the inner surface of the bottom wall 420 constituting the bottom surface 420b of the cooling channel CR. Alternatively, the wettability of the inner surface of the bottom wall 420 constituting the bottom surface 420a of the heating channel HR can be set to the bottom surface 420b of the cooling channel CR by spraying and coating metals having different wettability. The wettability of the inner surface of the bottom wall 420 may be larger.

(First Modification: Separation Device 500)
FIG. 8 is a diagram for explaining a separation apparatus 500 according to the first modification. In FIG. 8, the X axis (horizontal direction), the Y axis (horizontal direction), and the Z axis (vertical direction) that intersect perpendicularly are defined as shown. In FIG. 8, the liquid flow is indicated by solid arrows, the signal flow is indicated by broken arrows, and the connection relationship of the heat exchanger 510 is indicated by a one-dot chain line.

  As shown in FIG. 8, the separation device 500 includes a separation unit 110, a raw material liquid introduction unit 120, a reboiler 130, a condenser 140, a distillate fluid recovery unit 150, a bottoms liquid recovery unit 160, and a temperature measurement. Unit 170, control unit 180, and heat exchanger 510. In addition, about the structure substantially equal to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted and the heat exchanger 510 from which a structure differs is demonstrated here.

  The heat exchanger 510 includes a gas flowing from the raw material liquid inlet 224 to the distillate fluid outlet 220 in the gas-liquid contact flow path R, that is, a gas flowing through the cooling flow path CR (gas layer GL), and a raw material liquid By exchanging heat with the raw material liquid before being introduced into the inlet 224, the gas flowing in the cooling channel CR is cooled and the raw material liquid is preheated.

  With the configuration including the heat exchanger 510, the energy consumption required for the reboiler 130 and the condenser 140 can be reduced, and the running cost can be reduced.

(Second modification: separation unit 610)
FIG. 9 is an exploded perspective view of the separation unit 610 according to the second modification, and FIG. 10 is a cross-sectional view of the separation unit 610 according to the second modification. 10A is a cross-sectional view taken along the line Xa-Xa when the upper wall 212 and the side wall 214 are closed in FIG. 9, and FIGS. 10B and 10C are other views of the second modification. The figure explaining the example of is shown.

  As shown in FIG. 9, the separation unit 610 according to the second modified example includes a bottom wall 210, an upper wall 212, a side wall 214, a distillate fluid outlet 220, a bottoms outlet 222, a raw material inlet 224, In addition to the rib 230 and the baffle plate 240, gas layer protrusions 622 and 624 are included.

  The gas layer protrusion 622 protrudes into the gas-liquid contact channel R from the inner surface of the outer wall that contacts the gas layer GL of the gas-liquid contact channel R, that is, the inner surface of the upper wall 212, and the distillate fluid discharge port 220. It extends from the side to the bottom discharge outlet 222 side. In addition, the gas layer protruding portion 624 protrudes from the portion of the inner surface of the side wall 214 that comes into contact with the gas layer GL into the gas-liquid contact flow path R, and from the distillate fluid discharge port 220 side to the bottom liquid discharge port 222. Extends to the side.

  Thus, the surface area of the inner surface of the outer wall (upper wall 212, side wall 214) in contact with the gas layer GL can be increased by the configuration including the gas layer protrusions 622 and 624. As described above, the reboiler 130 heats the inside of the gas-liquid contact channel R from the outside of the outer wall (the bottom wall 210, the upper wall 212, and the side wall 214) constituting the gas-liquid contact channel R, that is, through the outer wall. The capacitor 140 cools the gas-liquid contact flow path R through the outer wall constituting the gas-liquid contact flow path R. Therefore, the heat transfer efficiency from the reboiler 130 to the gas-liquid contact flow path R can be improved by providing the gas layer protrusions 622 and 624 and increasing the surface area of the inner surface of the outer wall in contact with the gas layer GL. The heating efficiency by the reboiler 130 can be improved. Further, since the heat radiation performance through the outer wall can be improved also in the cooling channel CR, the cooling efficiency by the capacitor 140 can be improved.

  In addition, here, the configuration in which the separation unit 610 includes the gas layer protrusions 622 and 624 has been described, but other configurations may be adopted as long as the surface area of the outer wall can be increased. For example, as shown in FIG. 10 (b), not only the gas layer protrusions 622 and 624 but also the outer wall contacting the liquid layer LL of the gas-liquid contact channel R, that is, the inner surface of the bottom wall 210 and the rib 230 A liquid layer protruding portion 652 that protrudes into the liquid contact flow path R and extends from the distillate fluid discharge port 220 side to the bottom liquid discharge port 222 side may be further provided, as shown in FIG. Thus, the gas layer protrusions 622 and 624 may not be provided, and only the liquid layer protrusion 652 may be provided.

  With the configuration including the liquid layer protruding portion 652, the surface area of the inner surface of the outer wall (the bottom wall 210 and the rib 230) in contact with the liquid layer LL can be increased. Therefore, the heat transfer efficiency from the reboiler 130 to the gas-liquid contact flow path R can be improved by providing the liquid layer protrusion 652 and increasing the surface area of the inner surface of the outer wall that contacts the liquid layer LL. It becomes possible to improve the heating efficiency by.

(Third Modification: Reboiler 730)
FIG. 11 is a diagram for explaining a reboiler 730 according to a third modification. As shown in FIG. 11, the reboiler 730 of the third modified example includes an outer wall that constitutes the gas-liquid contact flow path R from the raw material liquid inlet 224 to the bottom liquid discharge outlet 222 in the gas-liquid contact flow path R. 740, electrodes 750 a and 750 b, a power supply unit 760, and an insulator 770.

  Here, as an example, the outer walls (bottom wall 210, upper wall 212, side wall 214) from the raw material liquid inlet 224 to the distillate fluid outlet 220 (not shown in FIG. 11) are made of stainless steel. I will give you a description.

  The outer wall 740 constituting the reboiler 730 is made of a material that generates heat when energized (for example, NiCr alloy, Kanthal, SiC), the bottom wall 742 constituting the bottom surface of the gas-liquid contact channel R, and the gas-liquid contact channel R. The upper wall 744 which comprises the upper surface of this, and the side wall 746 which comprises the side surface of the gas-liquid contact flow path R are comprised. Here, the case where the outer wall 740 is made of a NiCr alloy will be described as an example.

  The electrodes 750a and 750b are disposed at both ends of the outer wall 740. More specifically, the electrode 750a has a plate shape and is provided at the end of the outer wall 740 on the bottom liquid discharge port 222 side. The electrode 750a also has a function of sealing a space (gas-liquid contact flow path R) defined by the bottom wall 210, the upper wall 212, the side wall 214, and the outer wall 740. The electrode 750b has an annular shape and is provided at the end of the outer wall 740 on the raw material liquid inlet 224 side.

  The power supply unit 760 is connected to the electrodes 750 a and 750 b and supplies power to the outer wall 740. As described above, since the outer wall 740 is made of a material (NiCr alloy) that generates heat when energized, when the outer wall 740 is energized by the power supply unit 760, the outer wall 740 generates heat, and the gas-liquid contact flow path. The gas and liquid in R can be heated above the boiling point of the low boiling point component.

  Thus, the gas-liquid contact flow path R from the raw material liquid inlet 224 to the bottom liquid discharge port 222 is configured by using the outer wall 740 itself from the raw material liquid inlet 224 to the bottom liquid outlet 222 as a heating source. In, gas and liquid can be efficiently heated. In addition, the separation device itself can be further downsized.

  The insulator 770 has an annular shape and is disposed between the electrode 750b and the outer walls (the bottom wall 210, the upper wall 212, and the side wall 214) from the raw material liquid inlet 224 to the distillate fluid outlet 220. By providing the insulator 770, it is possible to prevent electric leakage to the outer walls (bottom wall 210, upper wall 212, side wall 214) from the raw material liquid inlet 224 to the distillate fluid outlet 220 made of stainless steel. It becomes possible.

(Example)
Distillation was performed using the separator 100 using a mixed liquid of methanol and water (mixing ratio 1: 1) as a raw material liquid. The flow rate of the raw material liquid introduced by the raw material liquid introduction unit 120 was set to 2 g / min, and the raw material liquid was preheated to 60 ° C. and then introduced into the separation unit 110. Further, the reboiler 130 was set so that the heating flow path HR was 95 ° C., and the cooling flow path CR was air-cooled in an atmosphere of room temperature (here, 20 ° C.).

  As a result, the methanol concentration in the distillate was 90% or more, and the methanol concentration in the bottoms was 25% or less (water concentration was 75% or more). Since the methanol concentration in the distillate obtained using the separation apparatus 100 is higher than the methanol concentration (80%) in the simple distillation operation, distillation is continuously performed even in one space. I was able to confirm.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Is done.

  For example, in the first embodiment, the configuration in which the bottom surface 210a of the gas-liquid contact flow path R is inclined vertically downward from the distillate fluid discharge port 220 toward the bottom liquid discharge port 222 has been described. However, the bottom surface 210a between the raw material liquid inlet 224 and the bottom liquid outlet 222 only needs to be positioned below the bottom surface 210a between the raw liquid inlet 224 and the distillate fluid outlet 220. . For example, the bottom surface 210 a between the raw material liquid inlet 224 and the bottom liquid outlet 222 is inclined in the vertical direction from the raw liquid inlet 224 toward the bottom liquid outlet 222, The bottom surface 210a between the outlet fluid outlet 220 may extend in the horizontal direction.

  Moreover, in the said 1st Embodiment, the upper surface 212a of the gas-liquid contact flow path R demonstrated the structure which inclines vertically upwards as it goes to the distillate fluid discharge port 220 from the bottoms discharge port 222. However, the upper surface of the gas-liquid contact flow path R does not necessarily have to be inclined, and may extend in the horizontal direction. Even if the upper surface of the gas-liquid contact flow path R extends in the horizontal direction, in the heating flow path HR, a pressure difference is generated between the raw material liquid inlet 224 side and the bottom liquid discharge outlet 222 side. The gas generated in the flow path HR flows in the direction opposite to the flow of the liquid, that is, toward the raw material liquid inlet 224 (distilled fluid outlet 220).

  Moreover, in the said 1st Embodiment, although the rib 230 was integrally formed with the bottom wall 210 (bottom surface 210a), the bottom wall 210 and the rib 230 may be a different body. Similarly, the upper wall 212 and the baffle plate 240 may be integrally formed or may be separate. Further, the bottom wall 320 and the blocking plate 340 may be integrally formed or may be separate.

  In the first embodiment, the configuration in which the baffle plate 240 is erected from the upper wall 212 has been described. However, the baffle plate 240 only needs to be able to seal the gas layer GL, and the shape is not limited. For example, a baffle plate may be protruded from the bottom wall 210 or the rib 230 into the gas-liquid contact flow path R, and a through hole may be provided at a location immersed in the liquid layer LL.

  Moreover, in the said 2nd Embodiment, the upper surface 212a of the gas-liquid contact flow path R was the same surface, and demonstrated the structure extended in a horizontal direction. For this reason, the height of the gas-liquid contact flow path R is different between the heating flow path HR and the cooling flow path CR. However, the upper surface 212a may be configured so that the heating channel HR and the cooling channel CR have substantially the same height. More specifically, the heating channel HR and the cooling channel CR are substantially equal in height by disposing the upper surface of the heating channel HR lower than the upper surface of the cooling channel CR by a level difference SD. can do. Further, the upper surface 212a of the gas-liquid contact channel R may be inclined vertically upward from the bottom liquid discharge port 222 toward the distillate fluid discharge port 220.

  In the third embodiment, the wettability of the bottom wall 420 constituting the bottom surface 420a of the heating channel HR is substantially uniform, and the bottom wall 420 constituting the bottom surface 420b of the cooling channel CR is substantially uniform. The case where the wettability is substantially uniform has been described as an example. However, the wettability of the bottom wall 420 constituting the bottom surface 420a of the heating flow path HR may be configured to increase stepwise toward the bottom liquid discharge port 222. Further, the wettability of the bottom wall 420 constituting the bottom surface 420b of the cooling channel CR may be configured so as to decrease stepwise toward the distillate fluid discharge port 220. In this case, even if the blocking plate 340 is not provided, it is possible to avoid a situation in which the liquid that has dropped onto the bottom wall 420 of the cooling flow path CR is discharged from the distillate fluid discharge port 220, and the condensed liquid is reliably heated. It is possible to reflux to HR.

  In addition, the wettability of the bottom wall 210 constituting the bottom surface 210a (the bottom surface 210a of the heating channel HR) from the raw material liquid inlet 224 to the bottoms liquid outlet 222 in the separation apparatus 100 is distilled from the raw material liquid inlet 224. You may make it larger than the wettability of the bottom wall 210 which comprises the bottom face 210a (bottom face 210a of the cooling flow path CR) between the fluid discharge ports 220. FIG. Similarly, the wettability of the bottom wall 320 constituting the bottom surface 320a of the heating channel HR in the separation device 300 may be made larger than the wettability of the bottom wall 320 constituting the bottom surface 320b of the cooling channel CR.

  In the first modified example, the example in which the heat exchanger 510 is added to the configuration of the separation device 100 described in the first embodiment has been described. However, the heat exchanger 510 is added to the configuration of the separation devices 300 and 400. May be added.

  Moreover, in the said 2nd modification, although the structure provided with two or more gas layer protrusion parts 622 and 624 and the liquid layer protrusion part 652 was mentioned as an example, the structure provided only 1 may be sufficient. In addition, the configuration in which the gas layer protrusions 622 and 624 and the liquid layer protrusion 652 extend from the distillate fluid discharge port 220 side to the bottom liquid discharge port 222 side, that is, a plate-shaped configuration has been described. . However, the shape of the gas layer protrusions 622 and 624 and the liquid layer protrusion 652 is not limited, and may be, for example, a column shape. In addition, the configuration in which the gas layer protrusions 622 and 624 and the liquid layer protrusion 652 protrude from the outer wall has been described. The liquid layer protrusion 652 may be used.

  In the third modified example, the case where the outer wall 740 from the raw material liquid inlet 224 to the bottom liquid outlet 222 is made of a material that generates heat when energized has been described as an example. However, at least the bottom wall 742 constituting the bottom surface with which the liquid contacts may be made of a material that generates heat when energized.

  Moreover, in the said embodiment, although the dimensional relationship and inclination | tilt angle of the gas-liquid contact flow path R were demonstrated, the ratio of the low boiling point component and high boiling point component in a raw material liquid, the target separation performance, and by the raw material liquid introduction part 120 What is necessary is just to set suitably based on the introduction flow rate (processing speed) of a raw material liquid.

  In the above embodiment, the case where the low boiling point component and the high boiling point component are liquid at normal temperature and pressure has been described as an example. However, the low boiling point component may be a gas at normal temperature and pressure, and the distillate fluid may be a gas (distilled gas). For example, when separating a raw material liquid containing ammonia or carbon dioxide as a low-boiling component, the separation devices 100, 300, 400, and 500 according to the above-described embodiments and modifications can be used.

  INDUSTRIAL APPLICATION This invention can be utilized for the separation apparatus which isolate | separates the raw material liquid comprised including a low boiling point component and a high boiling point component into a distillate fluid and a bottoms.

100, 300, 400, 500 Separator 120 Raw material liquid inlet 130, 730 Reboiler 140 Capacitors 210, 320, 420 Bottom wall (outer wall)
210a, 320a, 320b, 420a, 420b Bottom 212 Upper wall (outer wall)
212a Upper surface 214 Side wall (outer wall)
220 Distillate fluid discharge port 222 Bottom discharge port 224 Raw material liquid introduction port 230 Rib 240 Baffle plate 240a Tip 510 Heat exchangers 622, 624 Gas layer protrusion 652 Liquid layer protrusion 740 Outer wall

Claims (9)

A raw material liquid comprising a low-boiling component and a high-boiling component having a higher boiling point than the low-boiling component, a distillate fluid having a higher concentration of the low-boiling component than the raw material liquid, A separation device that separates boiling components into high-concentrated bottoms,
A gas-liquid contact flow path in which a distillate fluid discharge port for discharging the distillate fluid is provided on one end side, and a bottom liquid discharge port for discharging the bottom liquid is provided on the other end side;
Raw material liquid introduction for introducing the raw material liquid into the gas-liquid contact channel through the raw material liquid inlet port provided between the distillate fluid outlet and the bottom liquid outlet in the gas-liquid contact channel. And
A reboiler that is provided between the raw material liquid inlet and the bottom liquid outlet and that heats the liquid in the gas-liquid contact flow path to the boiling point of the low boiling point component or more.
A condenser that is provided between the raw material liquid inlet and the distillate fluid outlet, and cools the gas in the gas-liquid contact flow path below the boiling point of the low boiling point component;
With
The bottom surface of the gas-liquid contact channel is inclined vertically downward from the distillate fluid outlet to the bottoms outlet .
In the gas-liquid contact flow path, a liquid layer in which a liquid flows from the distillate fluid discharge port side to the bottom liquid discharge port, and the distillate fluid discharge port from the bottom liquid discharge port side above the liquid layer. And a gas layer in which a gas flows to the outlet side. An upper surface of the gas-liquid contact flow path, the separation device according to claim 1, characterized in that inclined vertically downward toward the bottoms outlet from the distillate fluid outlet. One or a plurality of ribs standing in the gas-liquid contact flow channel from the outer wall constituting the bottom surface of the gas-liquid contact flow channel and extending from the distillate fluid discharge port side to the bottom liquid discharge port side Prepared,
The liquid separator according to claim 1 or 2, characterized in that flow through the partition passage is a flow path that is defined by the ribs. A baffle plate is provided between the bottom discharge outlet and the raw material inlet side to seal the gas layer and restrict the movement of the gas to the bottom discharge outlet. The separation apparatus according to any one of claims 1 to 3 , wherein By exchanging heat between the gas flowing from the raw material liquid inlet to the distillate fluid outlet in the gas-liquid contact channel and the raw material liquid before being introduced into the raw material liquid inlet, the gas The separator according to any one of claims 1 to 4 , further comprising a heat exchanger that cools the raw material liquid and preheats the raw material liquid. The outer wall that constitutes the bottom surface of the gas-liquid contact flow path is such that the inner surface of the outer wall that constitutes the bottom surface from the raw material liquid inlet to the bottom liquid outlet is from the raw material liquid inlet to the distillate fluid outlet. The separator according to any one of claims 1 to 5 , wherein wettability is larger than that of an inner surface of an outer wall constituting the bottom surface. The gas-liquid projecting portion according to any one of claims 1 to 6 , further comprising one or a plurality of gas layer projecting portions projecting into the gas-liquid contacting channel from an inner surface of an outer wall contacting the gas layer of the gas-liquid contacting channel. Separation device according to. Any one of claims 1 to 7, characterized in that it comprises one or more liquid layers protrusion protruding from the inner surface of the outer wall in contact with the liquid layer of the gas-liquid contact flow path gas-liquid contact flow path Separation device according to. The reboiler is made of a material which generates heat by energization of claims 1 to 8, characterized in that it is configured to include an outer wall constituting a bottom surface of at least from the starting solution inlet to said bottom liquid outlet The separation device according to any one of claims.

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