JP6150102B2 - Distillation packing - Google Patents

Description

  The present invention relates to a packing used by filling a distillation column, fractionation column, and fractionation pipe in a distillation method. More specifically, the present invention relates to a distillation packing that is used by filling the distillation column or the like when separating a liquid mixture of a plurality of components by a distillation method.

  Conventionally, a large number of operations such as distillation and fractional distillation have been carried out in academic research relating to chemistry such as chemistry, chemical industry, pharmacy, and business.

  As the distillation method, for example, a filling type in which a packing is filled in a distillation column or fractionation column (or fractionation tube), and a multistage type in which shielding plates and shelves are arranged in multiple stages in the distillation column etc. (Also called a step type) is generally widely known. The present invention relates to a packing used in a packed distillation method.

  The packed distillation method is performed, for example, by the following method. Hereinafter, an outline of the example will be described with reference to FIG. FIG. 5 is an explanatory view schematically showing a configuration of an example distillation apparatus 5 used in a packed distillation method and a method of using the same. In the figure, 50 is a fractionation column (or fractionation tube or distillation column), 51 is a distillation still connected to the lower end of the column 50, and 52 is connected to the upper end (top) of the column 50 by a connecting tube 53. , A cooler (condenser), 54 is an open / close cock interposed in an outflow pipe 55 disposed at the lower end of the cooler 52, and 56 is a collection container.

  Therefore, the distillation mixture 6 is filled in the column 50 and the liquid mixture 7 (solution) to be distilled (fractional distillation) is enclosed in the kettle 51. When the kettle 51 is heated, the solution is distilled (vaporized) and enters the column 50 and rises in the column 1 while being in contact with the packing 6. In this ascending process, heat is exchanged by contact with the packing. The component having a high boiling point is liquefied and adheres to the packing, and the component having a low boiling point is not liquefied and rises as it is.

  As described above, while the steam (mixed steam) heated and distilled is rising in the column 50, it is contacted with the packing and the liquid that has been liquefied and adhered to the packing, and heat exchange is performed. In the middle, it liquefies and flows down, is refluxed into the kettle 51, the low boiling point component rises in a vaporized state, is introduced into the cooler 52 through the connecting pipe 53, and is cooled and liquefied (condensed) here. Collected in a container 55. As described above, the solution in the pot 51 is separated and separated according to the boiling point of the components. The distillation apparatus 5 is disclosed as an example as described above.

Conventionally, various packing materials used in the distillation method are generally known, such as a spherical shape (glass sphere), a ceramic tube (cylindrical shape), and a McMahon. These fillers are appropriately selected and used in accordance with the type and application of the components of the target liquid mixture (solution).
By the way, as one of the important criteria for determining whether the packing performance is good or bad, the surface area of the packing filled per unit volume is larger or smaller.

  Therefore, looking at the conventional example illustrated above, first, the spherical glass sphere (conventional example 1) has the smallest surface area compared to other shapes. In this case, if the sphere is formed to be porous, the surface area increases, but it is difficult to manufacture a large number of small holes in a small glass sphere (diameter of about 3 to 5 mm).

  Next, the ceramic pipe (conventional example 2) is made by cutting a ceramic pipe material having a small diameter (for example, an outer diameter of about 3 to 5 mm), and the surface area is somewhat larger than the glass sphere of the conventional example 1, Still small other than that.

  Next, McMahon (Conventional Example 3) is formed by bending a stainless steel net having a width of about 6 mm into a substantially U shape, and its surface area is somewhat larger than the cylindrical shape (ceramic pipe) of Conventional Example 2. However, there is not much difference.

  As described above, the fillings of Conventional Examples 1 to 3 have the problems described above. Therefore, the present inventor has repeatedly conducted research and experiments to solve the above-described problems of the conventional example, and as a result, the packing for distillation described in Japanese Patent Application Laid-Open No. 2011-125841 (Patent Document 1) (prior art). ) Was developed.

  As disclosed in the above-mentioned publication, the above prior art filler is composed of a metal coiled body formed by curling a thin metal wire made of flat stainless steel or the like into a coil shape.

  According to the prior art packing, the surface area is greatly increased, which can greatly increase the contact surface of gas and liquid, thus improving the performance compared with the conventional examples 1 to 3, and exhibiting an excellent fractionation effect Can be made. Moreover, the packing which reduced the production cost can be provided. In addition, since the said effect was discovered as a result of experiment, and the detail is described with the experiment example in the said gazette, detailed description is abbreviate | omitted here using this description matter.

JP 2011-125841 A

According to the prior art packing, it is possible to provide a distillation packing that exhibits excellent effects as described above. However, there is still room for the following improvements to be made by the prior art fillers.
(1) Problem of packing workability The packing is appropriately loosened and packed into a fractionating column (or a fractionating tube or a distillation column). However, since the filling is composed of a metal coil-like body, it tends to become tangled, and it may be difficult to unravel. Therefore, it takes time to fill the fractionation tower.
In addition, since the packing has a large or small difference in performance depending on the packing density in the column, the packing density is also an important condition. However, as described above, the packing has a desired packing density because it is easily tangled. In order to fill in such a manner, it takes considerable effort and skill.
(2) Problems in storage and handling The packing material is loosened to form a molded product of a desired size and shape, and this molded product is packed into a distillation column (or fractionation column). May be used. However, as described above, since the filler is easily entangled, the molded articles formed with the filler are also easily entangled. Therefore, if the moldings are stored and placed, the moldings will be entangled with each other, making it difficult to separate them. Or, there is a risk that the shape will be distorted.
In the case where shape deformation or the like occurs as described above, it is necessary to correct the molded product to a predetermined size and shape and fill the distillation column, so that the handling work is troublesome. Thus, storage problems and handling problems arise.

  Therefore, in view of the above circumstances, the present invention utilizes the features of the prior art packing as it is to provide excellent performance (fractionation effect), and improve filling workability, storage and handling workability. It is an object to provide a filling for distillation.

In order to achieve the above object, one of the present inventions (first invention) is a packing for distillation used in a distillation method,
A filling body made of a metal coiled body formed by curling flat metal fine wires into a coil;
Having good circulation of vapor, gas, and liquid, and a container formed in a substantially cylindrical shape,
The diameter of the vessel is formed to be approximately the same diameter as the inner diameter of the distillation column or fractionation column or fractionation tube used,
The filling body is configured by filling the container with a desired density.

  In the present invention, the term “coiled” is used as a concept including the meaning of “spiral”. Further, the term “metal coil-like body” is used as a concept including a “metal spiral body” formed by curling in a spiral shape.

Another invention of the present invention (second invention) is the packing for distillation according to the first invention, wherein the container is substantially equally divided into a plurality of radial shapes in a circumferential direction from a substantially cylindrical container. It is comprised by the division | segmentation container of the shape which was made.

Still another invention of the present invention (third invention) is such that, in the packing for distillation of the first or second invention, the container is elastically deformable while maintaining its shape retention. It is characterized in that moderate flexibility is imparted.

  In the present invention, a container made of a wire mesh material can be adopted as the container (fourth invention). Moreover, the said container can also be comprised with a porous container (5th invention).

  Moreover, in this invention, a flat stainless steel fine wire is employable as said flat metal fine wire (6th invention).

According to the present invention, the following operational effects can be obtained.
(1) Since the filling body is composed of a metal coiled body formed by curling flat metal fine wires into a coil shape, the surface area of the filling is greatly increased, and thereby the gas-liquid contact surface Can be greatly increased. Therefore, a packing exhibiting extremely excellent performance (fractionation effect) can be obtained.
(2) The packing for distillation is packed and accommodated at a desired density in a container formed in a desired size and shape having a good flowability of vapor, gas, and liquid in the packing body. It is configured. Therefore, the packing operation of the packed product into the distillation column (or fractionation column or fractionation column) can be performed easily and smoothly.
(3) The packing for distillation is configured by filling the packing body into the container. Therefore, a packing in which the packing density of the packing body is adjusted to a desired density can be created (manufactured) easily and efficiently.
(4) Since the filling is configured by filling and storing the filling body into the container, the filling body can be prevented from protruding from the container. Therefore, since the filling bodies of the fillings are not entangled with each other during storage, they can be stored in an orderly manner and handling operability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the packing for distillation of one Embodiment of this invention, Comprising: The figure (a) is a perspective view which shows the whole structure of the said packing roughly, The figure (b) is the structure of a container roughly. FIG. 4C is an explanatory view schematically showing the structure of a filling body made of a metal coil-shaped body filled in the container, and FIG. 4D is a part of the metal coil-shaped body. It is explanatory drawing which expands and shows the structure roughly. It is explanatory drawing which expands further some metal coil-like bodies which form a filler main body, and shows the structure roughly. It is a figure which shows the structure of the container of other embodiment employ | adopted as the packing for distillation of other embodiment of this invention, Comprising: The same figure (a) is explanatory drawing which shows the structure of a container main body roughly, FIG. 2B is an explanatory diagram schematically showing the configuration of the lid. It is a figure which shows the packing for distillation of further another embodiment of this invention, Comprising: The same figure (a) is explanatory drawing which shows schematically the whole structure of the said packing formed combining the divided packing, The figure (B) is explanatory drawing which shows the structure of one division | segmentation packing which forms the said packing, The figure (c) and (d) are employ | adopted as the division | segmentation packing shown in the figure (b). It is explanatory drawing of the container main body (c) and the cover part (d) which show the structure of a container roughly. It is explanatory drawing which shows roughly the structure of the example distillation apparatus used for the filling-type distillation method, and its usage method.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a distillation packing according to an embodiment (Embodiment 1) of the present invention. As shown in the figure, the packing for distillation of the present invention includes a packing main body 1 and a container 2 that fills and stores the main body 1.

  The filling body 1 is composed of a metal coiled body 10 formed by curling (curling) a flat metal fine wire 11 in a coil shape or a spiral shape.

  The said metal fine wire 11 which forms the said coil-shaped body 10 of Embodiment 1 is comprised by the stainless steel fine wire. The thickness and width of the thin metal wire 11 are not particularly limited, and examples thereof include a thickness range of about 0.01 mm to about 0.08 mm and a width of about 0.3 mm to about 1.5 mm. . However, the present invention is not limited to the above range.

  The diameter of the metal coil-shaped body 10 is not particularly limited, and examples thereof include a range of about 2 mm to about 5 mm in diameter (outer diameter). However, the present invention is not limited to the above range. The length of the metal coil-shaped body 10 is not particularly limited, and can be arbitrarily determined as desired. For example, the length of the metal coil-shaped body 10 can be in the range of about 5 mm to about 10 meters. However, it is not limited to the above range, and can be formed to a length of 5 mm or less, or 10 meters or more.

  The metal thin wire 11 can be formed, for example, by crushing a metal round wire (in this embodiment, a stainless steel round wire) having a diameter of about 0.1 mm to about 0.3 mm and processing it into a flat shape. The metal coil-shaped body 10 is formed, for example, by curling a metal thin wire 11 (flat metal thin wire) processed into a flat shape as described above into a coil shape or a spiral shape (curl winding). is there. In addition, the diameter of the stainless steel round wire which comprises the said thin wire 11 was mentioned as an example, and is not limited to the said range.

  The flat metal thin wire 11 and the metal coil-like body 10 can be manufactured, for example, by a manufacturing method similar to a conventionally known “metal scrubbing”. The metal coiled body 10 may be formed by curling the adjacent curled portions 11a in contact with each other in a coil spring shape, or as shown in FIG. 1 (d) between the adjacent curled portions 11a. Alternatively, a desired gap portion 11b may be formed and curled.

  The said container 2 is comprised with the container which formed the favorable distribution | circulation of the vapor | steam, gas, and liquid. The container 2 of Embodiment 1 is comprised with metal-mesh materials, such as a stainless steel wire. In some cases, it may be made of a resin material.

  The container 2 is formed in a desired size and a desired shape. The container 2 of Embodiment 1 is formed in a substantially cylindrical shape having a desired diameter and length (height). Specifically, as shown in detail in FIG. 1B, a cylindrical shape in which one end (lower end) of the cylindrical body portion 21 is closed by the bottom plate portion 22 and the other end (upper end) is opened 23 (opening portion). The container main body 20 and a lid portion 24 that closes the opening 23 are provided. The trunk | drum 21, the baseplate part 22, and the cover part 24 of the said container main body 20 are comprised with the wire-mesh material. Thereby, the container 2 is comprised so that vapor | steam, gas, and a liquid may distribute | circulate freely and favorably as a whole.

  The diameter and length (height) of the vessel 2 depends on the size of the distillation column or fractionation column used, or the fractionation tube 50 (hereinafter sometimes simply referred to as “distillation column etc.”). It can be decided arbitrarily. For example, a range of about 15 mm to about 1000 mm in diameter and about 30 mm to about 200 mm in length (height) can be given. However, it is not limited to the above range.

  As described above, the size of the container 2 can be arbitrarily determined, but is preferably determined according to the inner diameter and length of the distillation column or the like. In this case, it is preferable that the diameter of the container 2 is formed so as to substantially match the inner diameter of the distillation column used. Further, the height of the container 2 may be appropriately determined according to the length of the distillation column or the like.

  For example, as a container for a distillation tower having an inner diameter of 20 mm and a length of 500 mm, one formed in a diameter of about 20 mm (or less than 20 mm) and a height of about 40 to 50 mm can be mentioned. In the case of a distillation column container having an inner diameter of 25 mm and a length of 800 mm, a container having a diameter of about 25 mm (or less than 25 mm) and a height of about 40 to 60 mm can be exemplified. However, it is not limited to the above. As will be described later, the packing material of Embodiment 1 is stacked and packed in a distillation column or the like.

  Moreover, it is preferable to comprise the container 2 so that moderate softness | flexibility may be provided so that shape retention property may be maintained and it can deform | transform elastically. By comprising in this way, the outer peripheral surface of a container can be closely matched with inner wall surfaces, such as a distillation tower, and a packing can be filled closely.

  The distillation filling 100 according to the first embodiment closes the lid 24 after the filling body 10 is filled and accommodated in the container body 20 at a desired density. The lid 24 is fixed to the container body 20 by welding or other means and closed. In this case, the filling density of the filling body 10 can be determined as desired. For example, in the case of a filling body made of a coiled body of stainless steel fine wire, for example, about 0.40 to about 0. A range of about .50 g / cc can be exemplified. However, the present invention is not limited to the above range.

  The distillation packing of Embodiment 1 is configured as described above. For example, as shown in FIG. 5, a required number of packings 100 are sequentially stacked and packed in a distillation column 50 (fractionation column). Used for. In the above case, when a gap portion is formed between the inner wall surface of the tower 50 and the outer wall surface of the packing container 2, another packing body 1 is packed in the gap portion. Can also be eliminated.

(Effect of Embodiment 1)
According to the packing for distillation of Embodiment 1, the following effects are obtained.
(1) It is possible to provide a packing for distillation which exhibits extremely excellent performance (fractionation effect) equivalent to the packing of the prior art described above.
(2) The workability of filling the packed material into the distillation column (or fractionation column or fractionation pipe) can be improved.
(3) The filling body is filled into the container to constitute a distillation filling. Therefore, a packing in which the packing density of the packing body is adjusted to a desired density can be created easily and efficiently.
(4) Since the filler main bodies between the fillers can be prevented from being entangled with each other during storage, they can be stored in an orderly manner and handling operability can be improved.

  FIG. 3 shows a distillation packing according to another embodiment (Embodiment 2) of the present invention. The filling 200 for distillation of Embodiment 2 has the characteristics in the structure of the container 2A. In addition, since the filler main body 1 of the filler 200 of Embodiment 2 is comprised the same as the filler main body 1 of Embodiment 1, illustration is abbreviate | omitted.

  The container 2A of the filling 200 according to the second embodiment is configured by a substantially cylindrical porous container having a desired diameter and height.

  Specifically, as shown in FIG. 3, the container 2A has a cylindrical shape in which one end (lower end) of the cylindrical body portion 21A is closed with a bottom plate portion 22A and the other end (upper end) is opened 23A (opening portion). The container body 20A and a lid 24A that closes the opening 23A are configured.

  A large number of holes 25 having a desired size are scattered throughout the body portion 21A, the bottom plate portion 22A, and the lid portion 24A of the container body 20A. The holes 25 are arranged at substantially the same intervals as the mesh of the wire mesh material of the first embodiment. Thereby, the container 2A is configured to freely and satisfactorily distribute vapor, gas, and liquid as in the case of the container 2 of the first embodiment.

  The size and the like of the container 2A are the same as those of the container 2 of the first embodiment. The container 2A is made of a metal plate material such as a stainless steel plate. In addition, it can also be comprised with a synthetic resin board | plate material. Further, similarly to the first embodiment, the container 2A is preferably configured so as to impart appropriate flexibility so as to be elastically deformable while maintaining shape retention.

  The distillation filling 200 according to the second embodiment closes the lid portion 24A after the packing main body 10 is filled and accommodated in the container main body 20A at a desired density as in the first embodiment. The lid 24A is fixed to the container body 20A by welding or other means and closed. Other configurations are the same as those of the first embodiment.

  The filling for distillation 200 of Embodiment 2 is configured as described above, and is used in the same manner as in Embodiment 1. Thereby, there exists an effect similar to Embodiment 1.

  FIG. 4 shows a packing for distillation according to still another embodiment (Embodiment 3) of the present invention. In addition, in the packing for distillation 300 of the third embodiment, the same reference numerals are given to the same components and the like as those already described in the first embodiment, and the description thereof is omitted. The third embodiment is characterized by the shape of the filler 300 and the like.

  The packing 300 of Embodiment 3 is configured to be suitable for use in a large distillation column (for example, a diameter of about 1 m to about 1.5 m). However, it is not limited to the above dimensions.

  The packing 300 according to the third embodiment includes, for example, a plurality of distillation packings 300A (combined packings) formed in a substantially cylindrical shape having a diameter of about 1 m to about 1.5 m and a height of about 20 cm to about 30 cm in the circumferential direction. It is formed of divided packings equally divided into six pieces (in the drawing, six pieces). A predetermined number (six in the drawing) of divided packings are combined to form one substantially cylindrical distillation packing 300A (combination packing). In addition, it is preferable that the diameter of the packing 300A is configured to be approximately the same as the inner diameter of the distillation column used.

  This will be specifically described below. The container 2B of the filling 300 according to the third embodiment has a substantially cylindrical container having a desired size, for example, a diameter of about 1 m to about 1.5 m and a height of about 20 cm to about 30 cm, oriented in the circumferential direction (diameter direction). Thus, the container is composed of a divided container having a shape that is radially divided into a plurality of pieces (six in the drawing). Note that the number of divisions can be arbitrarily changed to four.

  The container 2B (divided container) includes a substantially deformed triangular bottomed container body 20B having an opening 23B (opening) at one end (upper end), and a lid 24B that closes the opening 23B. Yes. The body portion 21B, the bottom plate portion 22B, and the lid portion 24B of the container body 20B are made of a wire mesh material such as a stainless steel wire. In addition, it is also possible to comprise a net-like material made of synthetic resin. Thereby, the container 2B is configured so as to distribute the vapor, gas and liquid freely and satisfactorily as a whole.

  Also in the third embodiment, it is preferable that the container 2B is configured to be imparted with appropriate flexibility so as to be elastically deformable while maintaining shape retention.

  In the filler 300 (divided filler) of the third embodiment, the filler main body 10 is filled in the container main body 20B at a desired density and stored in the same manner as in the first embodiment, and then the lid portion 24B is welded or other means. The container body 20B is fixed and closed. Other configurations are the same as those of the first embodiment.

The distillation packing 300 according to the third embodiment is configured as described above. As shown in FIG. 4A, a predetermined number (six in this embodiment) of the packings 300 (divided packings) is combined to 1 Individual combination fillings 300A are formed. Then, they are stacked in the target distillation column 50 and filled in the required number, and used in the same manner as in the past. In the above case, if a gap is formed between the inner wall surface of the tower 50 and the outer peripheral surface of the packing, another packing body 1 may be packed in the gap to eliminate the gap. it can.
In addition, when the combined packing 300A is packed into the distillation column 50, the stacked packing 300A is stacked at different positions so that the connecting lines (contact lines) between the divided packings 300 of the packing 300A do not overlap vertically. Filling is preferred.

  The packing for distillation of Embodiment 3 is configured as described above, and is used in the same manner as in Embodiment 1. Thereby, there exists an effect similar to Embodiment 1.

  In the third embodiment, an example in which the container body 20B is configured by a wire netting material is disclosed. However, it is needless to say that the container main body 20B may be configured by a porous container as in the second embodiment.

  The packing for distillation in each of the above embodiments is disclosed as an example, and the present invention is not limited to the above embodiment, and may be arbitrarily selected without departing from the technical idea described in the claims. It can be changed to

DESCRIPTION OF SYMBOLS 1 Filling body 2 Container 10 Metal coil-shaped body 11 Metal fine wire

Claims (6)

A packing for distillation used in a distillation method,
A filling body made of a metal coiled body formed by curling flat metal fine wires into a coil;
Having good circulation of vapor, gas, and liquid, and a container formed in a substantially cylindrical shape,
The diameter of the vessel is formed to be approximately the same diameter as the inner diameter of the distillation column or fractionation column or fractionation tube used,
A packing for distillation, wherein the packing body is filled in the container at a desired density.   The packing for distillation according to claim 1, wherein the container is constituted by a divided container having a shape in which a substantially cylindrical container is radially divided into a plurality of parts radially in the circumferential direction. The packing for distillation according to claim 1 or 2, wherein the container is provided with appropriate flexibility so as to be elastically deformable while maintaining shape retention.   The packing for distillation according to any one of claims 1 to 3, wherein the container is made of a wire mesh material.   The packing for distillation according to claim 1, wherein the container is a porous container.   The packing for distillation according to claim 1, wherein the metal fine wire is a stainless steel fine wire.

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