JP2019135035A - Distillation apparatus, and method for modification of distillation apparatus - Google Patents

Abstract

To provide a distillation apparatus which can maintain performance with a simple configuration, and a method for modification of an existing distillation apparatus.SOLUTION: A distillation apparatus 1 comprises a partition plate 23 which vertically extends and partitions the interior of a tower body 21, which constitutes a distillation tower 2 into plural chambers S2, S3, and further comprises, at an upper part or a lower part of the partition plate 23, a displacement suppression part 5 which is positioned in a direction along a radial direction of the tower body 21 and along a direction in which the partition plate 23 extends, and has a flexural rigidity larger than that of a vertical direction intermediate part of the partition plate 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a distillation apparatus used for separating each component from a stock solution in which a plurality of components are mixed, and a method for remodeling the distillation apparatus.

  2. Description of the Related Art A distillation apparatus that is an apparatus provided with a distillation tower having a partition plate inside is known. For example, Patent Document 1 describes that a combined distillation column in which a plurality of conventional distillation columns are combined into one column is provided with a partition plate inside. According to Patent Document 1, this partition plate is a flat plate member used for partitioning an internal section in the combined distillation column. By this partition plate, sections inside the distillation column can be adjacent to each other. For example, the partition plate is fixed to the side wall of the column in the combined distillation column, and is provided so as to extend in the vertical direction inside the column.

JP 2001-137602 A

  FIG. 4 schematically shows the internal structure of the distillation column 102 which is a combined distillation column. A partition plate 123 is provided inside the distillation column 102. During the operation of the distillation apparatus provided with the distillation column 102, the pressure difference in the front and back direction does not act on the partition plate 123. This is because the sections adjacent to each other on the left and right in the drawing with the partition plate 123 interposed therebetween are designed so that the steam flows evenly in each section so as not to cause a pressure difference. For this reason, the partition plate 123 should not be subjected to external force from each section. However, the inventor of the present application has actually obtained the knowledge that there may be a problem that the upper and lower ends of the partition plate 123 are deformed so as to warp. In FIG. 4, the broken line indicates the position of the partition plate 123 before deformation in the tower, and the solid line indicates the partition plate 123 that is deformed so as to incline to the right in the drawing as it goes upward. According to the knowledge of the inventor, the deformation of the partition plate 123 is remarkable particularly in a tower body having an inner diameter of 1000 mm or more.

  When such a deformation occurs, as shown in the upper right in FIG. 4, the deformed partition plate 123 interferes with the packing 122 in the tower, so that the packing 122 is displaced or the packing 122 is deformed. (Such as being crushed). Moreover, a wide part and a narrow part are made in the space in a tower by the one side and the other side (illustration left-right side) which pinches | interposes the partition plate 123. FIG. For these reasons, as shown by the broken line arrow on the left side of FIG. 4, the vapor flow Fa is easily directed to the widened portion, so that in each section in the tower, the liquid flow Ff (solid arrow in FIG. 4). In some cases, ideal gas-liquid contact between the vapor flow Fa and the vapor flow Fa may not be performed. Therefore, the performance of the distillation apparatus may not be maintained and may deteriorate. Further, if the deformation of the partition plate 123 is corrected later, the cost of the correction work is generated.

  There is also a need to modify the distillation apparatus so that an existing distillation column in which the inside of the column body is one chamber in the radial direction is a combined distillation column.

  Then, this invention makes it a subject to provide the distillation apparatus which can maintain performance by simple structure, and to provide the remodeling method with respect to the existing distillation apparatus.

  The present invention comprises a partition plate extending in the vertical direction for partitioning the interior of the tower body constituting the distillation tower into a plurality of chambers, and in the direction along the radial direction of the tower body above or below the partition plate. There is a distillation apparatus provided with a displacement suppressing part located in a direction along the extending direction of the partition plate and having a bending rigidity larger than that of the intermediate part in the vertical direction of the partition plate.

  According to this configuration, it is possible to resist the distortion generated in the upper part or the lower part of the partition plate due to the bending rigidity of the displacement suppressing portion, and therefore it is possible to suppress the deformation of the upper end or the lower end of the partition plate.

  The displacement suppression unit may be configured as a separate body from the partition plate.

  According to this configuration, it is possible to form the partition plate as a simple flat plate, compared to the case where a part of the partition plate is used as the displacement suppressing portion, and thus the manufacture of the partition plate is simple.

  Moreover, the said displacement suppression part can be a rod-shaped body which is the direction along the radial direction of the said tower | column, and continues from the end of the direction along the direction where the said partition plate is extended from the other end.

  According to this configuration, the bending rigidity required for maintaining the performance of the distillation apparatus can be easily set by selecting the size of the rod-shaped body.

  Further, the partition plate may be configured by connecting a plurality of partition plate dividing plates.

  According to this configuration, when modifying an existing tower body, the partition plate can be carried into the tower through the opening of the tower body having a limited size. Moreover, when connecting a some board by welding, since the distortion | strain by welding becomes larger than a single board, the effect of a displacement suppression part is show | played more largely.

  Moreover, the said displacement suppression part can be arrange | positioned in the part in which a packing does not exist inside the said column.

  According to this configuration, it is not necessary to perform a process such as notching the filler in order to dispose the displacement suppressing portion, so that the displacement suppressing portion can be disposed without affecting the performance of the filler.

  In addition, the present invention provides a partition plate dividing plate that is sequentially stacked upward or downward while fixing the side end of each partition plate dividing plate to the inner surface of the side wall of the column body constituting the distillation column. This is a method for remodeling a distillation apparatus, in which a displacement suppression part separate from the partition plate dividing plate is fixed to the upper portion of the plate or the lower portion of the partition plate dividing plate.

  According to this method, the existing distillation apparatus can be modified to have a partition plate in which the upper end or the lower end is prevented from being deformed.

  Moreover, each said partition plate division plate and the said displacement suppression part can be made into the dimension which can pass the opening part with which the said tower body is equipped.

  According to this configuration, the remodeling work can be carried out without expanding the opening of the tower body.

  In the present invention, deformation of the upper end or lower end of the partition plate can be suppressed by the displacement suppressing portion. For this reason, position shift and deformation of the packing can be suppressed, and ideal gas-liquid contact is maintained in each section in the tower. Therefore, the distillation apparatus which can maintain performance with a simple structure can be provided. Moreover, the modification method with respect to the existing distillation apparatus can be provided.

It is the longitudinal section showing the composition of the distillation tower concerning one embodiment of the present invention roughly. It is the perspective view which showed the relationship between the partition plate and the displacement suppression part in the inside of the said distillation tower. (A) is the top view which showed the partition plate and the displacement suppression part schematically, (B) is the same side view (The state which the partition plate distorted is shown with a dashed-two dotted line), (C) is It is the longitudinal cross-sectional view which expanded and showed the circumference | surroundings of the displacement suppression part. It is a schematic sectional drawing which shows the malfunction which arose in the conventional partition plate.

  Hereinafter, the distillation apparatus 1 which concerns on one Embodiment of this invention is demonstrated. The distillation apparatus 1 includes a distillation column 2 whose configuration is schematically shown in FIG. This distillation column 2 is a packed column in which a packing 22 is built, and is a combined distillation column composed of one column by integrating the functions of three conventionally used columns. A pipe is connected to the distillation column 2, and a distillation apparatus 1 is configured by disposing a condenser (condenser) 3 on the column top side and an evaporator (reboiler) 4 on the column bottom side. This distillation apparatus 1 is used to take out liquids rich in Component A, Component B, and Component C having different boiling points from the supplied stock solution.

  The distillation column 2 in this embodiment includes a column body 21 extending in the vertical direction. In the present invention, the tower body 21 is not limited to one extending in the vertical direction. The inside of the tower body 21 is divided into a first section S1 to a fourth section S4 in order from above. In the present invention, the number of sections constituting the distillation column 2 is not limited, and the number of sections according to the required performance of the distillation column 2 can be varied. Each section is provided with a filling 22 for performing mass transfer by bringing the rising vapor and the falling liquid into contact with each other. As the packing 22, for example, a plate-like body or a net-like body is processed into a corrugated shape, and then processed into a regular packing formed into a block shape according to the shape of the tower body 21 or a ring shape. Irregular packing in which many solids are gathered is used.

  As shown in FIG. 1, the second section S2 and the third section S3 are partitioned by a partition plate 23 that partitions the tower body 21 into two chambers arranged in the horizontal direction (details of the partition plate 23 will be described later). The second section S2 is divided into a second a section S2a and a second b section S2b which are adjacent to each other with the partition plate 23 interposed therebetween. The third section S3 is divided into a third a section S3a and a third b section S3b which are adjacent to each other with the partition plate 23 therebetween.

  The position of the partition plate 23 in the horizontal direction is not limited to the position passing through the center of the horizontal section of the tower body 21, and is set according to, for example, the ratio of the components A, B, and C in the stock solution. It is arranged at a position corresponding to the ratio of the cross-sectional area of the chamber where the section S3a is located and the cross-sectional area of the chamber where the second b section S2b and the third b section S3b are located.

  As shown in FIG. 1, the second distillation section D1 is constituted by the second a section S2a and the third a section S3a, the second distillation section D2 is constituted by the first section S1 and the second b section S2b, and the third b section. S3b and the fourth section S4 constitute a third distillation part D3. The upper section in each distillation section functions as a concentration section for increasing the concentration of the low boiling point component, and the lower section functions as a recovery section for increasing the concentration of the high boiling point component.

  The tower body 21 is provided with a feed nozzle 211 for supplying the stock solution into the tower, and a side cut nozzle 212 for taking out the separated components (liquid rich in component B in this embodiment) to the outside of the tower. In addition, a tower top steam outlet 213 and a reflux liquid inlet 214 are provided in the upper part of the tower body 21. These are connected to a condenser 3 provided outside the distillation column 2 for cooling and liquefying a gas (in this embodiment, a gas rich in component A). A tower bottom outlet 215 and a tower bottom steam inlet 216 are provided at the lower part of the tower body 21. These are connected to an evaporator 4 that is provided outside the distillation column 2 and heats and vaporizes a liquid (in this embodiment, a liquid rich in component C).

  Above each section, as shown in FIG. 1, a distributor (not shown) is provided for spraying the liquid descending the tower in a shower-like manner and evenly sprinkling the top of the packing 22 in each section. . Also, below each section, there is provided a collector (not shown) for receiving and collecting the liquid descending in the tower, collecting it, lowering it, guiding it to the distributor, and passing the vapor rising in the tower. Yes.

  The partition plate 23 is provided to partition the inside of the tower body 21 into a plurality of chambers S2 and S3 as described above, and extends in the vertical direction as shown in FIG. The two-dot chain lines on the upper and lower sides of the partition plate 23 are virtual lines indicating the position in the tower). The partition plate 23 is fixed to the tower body 21. In this embodiment, the metal partition plate 23 is fixed to the side wall inner surface 21a of the tower body 21 by welding. The two chambers formed by being partitioned by the partition plate 23 in the tower body 21 are the second section S2 and the third section S3 shown in FIG. As shown in FIG. 2 and FIGS. 3A and 3B, the partition plate 23 is configured in a single continuous plate shape by connecting a plurality of partition plate dividing plates 231. In the present embodiment, a plurality of partition plate dividing plates 231 are connected in the vertical direction to have a flat plate shape. In addition to the vertical direction, it is also possible to connect a plurality of partition plate dividing plates 231 in the horizontal direction.

  The plurality of partition plate dividing plates 231 are connected by welding. Here, when welding is performed, it is preferable that one partition plate dividing plate 231 to be connected and the other partition plate dividing plate 231 are fixedly fixed by a jig.

  In this way, when one partition plate 23 is configured by combining a plurality of partition plate dividing plates 231, for example, when the partition plate 23 is attached by remodeling an existing distillation tower, an existing inspection port or the like is large. Since the partition plate dividing plate 231 can be carried into the tower body 21 from the opening having a limited thickness, the distillation tower can be modified without expanding the opening. Moreover, when connecting a some board by welding, the distortion | strain by welding accumulates for every sheet | seat, and becomes larger than a single (one piece of board). In response to this, it is possible to effectively counteract distortion by providing a displacement suppression unit 5 described later.

  As shown in FIG. 2, a displacement suppressing portion 5 is provided on the upper or lower portion of the partition plate 23 so as to be positioned in the direction along the radial direction of the tower body 21 and in the direction along which the partition plate 23 extends. Yes. In the present embodiment, the displacement suppression unit 5 is provided at the upper end of the partition plate 23. In FIG. 1 to FIG. 3, the size of the displacement suppressing portion 5 is drawn exaggerated with respect to the partition plate 23. Since the upper part or the lower part of the partition plate 23 can be reinforced by the bending rigidity of the displacement suppressing unit 5, deformation of the upper end or the lower end of the partition plate 23 can be suppressed.

  Here, for the purpose of improving the strength, for example, if the overall thickness of the partition plate 23 is increased, there is a disadvantage that the weight is significantly increased and the arrangement space of the packing 22 inside the tower body 21 is reduced. Further, if ribs (unevenness) are formed on the entire partition plate 23, there are disadvantages such as an increase in processing cost and a reduction in the arrangement space of the packing material 22 inside the tower body 21. On the other hand, in this embodiment, by providing the displacement suppression part 5, the upper part or lower part of the partition plate 23 which is easy to deform | transform can be intensively reinforced. Moreover, the weight increase accompanying reinforcement is not so large, and the packing Since the displacement suppression unit 5 can be provided so as not to interfere with the motor 22, the merit is great.

  As described above, when the plurality of partition plate dividing plates 231 are connected in the vertical direction by welding, the welding strain generated at each connection location is directed toward the later connection direction (upward in this embodiment). As the partition plate 23 accumulates sequentially, the upper end or the lower end (the upper end in the present embodiment) of the partition plate 23 may become a large strain (displacement) as compared with the case where the partition plate 23 is a single plate. This may be one of the causes of deformation of the partition plate 23 according to the inventor's knowledge described in the problem column. However, as will be described later, when the existing distillation apparatus is modified to provide the partition plate 23, the size that can be carried into the tower is limited. I must. Thus, even when it is impossible to make the partition plate 23 a single plate, by providing the displacement suppressing portion 5 at the upper part or the lower part of the partition plate 23, the upper or lower end of the partition plate 23 Since it can counteract | strain, a deformation | transformation of the partition plate 23 can be suppressed effectively.

  The displacement suppression unit 5 is configured as a separate body from the partition plate 23. When configured in this manner, the partition plate 23 (and the partition plate dividing plate 231) can be formed as a simple flat plate compared to the case where a part of the partition plate 23 is used as the displacement suppressing portion 5, so that the partition plate 23 is manufactured. Has the advantage of being simple. However, the displacement suppression unit 5 can be formed by processing a part of the partition plate 23.

  In addition, the displacement suppressing portion 5 has a bending rigidity larger than that of the middle portion in the vertical direction of the partition plate 23 (the portion excluding the upper end portion and the lower end portion of the partition plate 23). Further, the displacement suppression unit 5 is a rod-like body that is continuous from one end to the other end in the direction along the radial direction of the tower body 21 and in the direction along which the partition plate 23 extends. In the present embodiment, the length D of the displacement suppressing portion 5 shown in FIG. 3 (A) substantially matches the inner diameter of the tower body 21. The “direction along the radial direction of the tower body 21” is not limited to a direction coinciding with the diameter direction of the tower body 21, and includes a direction parallel (shifted) to the diameter direction of the tower body 21. The rod-shaped body is not limited to a solid body, and may be a hollow tubular body. Moreover, the cross-sectional shape of a rod-shaped body is not ask | required. The cross-sectional shape of the present embodiment is circular, but may be various polygons such as a quadrangle. In order to maintain the performance of the distillation apparatus 1 by appropriately selecting the size of the rod-shaped body (cross-sectional shape, dimensions, and overall dimensions and thickness dimensions in the case of a tubular body) by making the displacement suppressing portion 5 a rod-shaped body The required bending rigidity can be set easily. As a selection criterion, for example, a cross-sectional second moment can be used. Moreover, when a cross-sectional shape is circular, there exists an advantage at the point which can enlarge the intensity | strength of the displacement suppression part 5. FIG. Further, when the cross-sectional shape is a quadrangle, there is an advantage in that the strength can be increased next when the cross-sectional shape is a circle.

  A metal round pipe is used for the displacement suppression portion 5 of the present embodiment, and is attached to the upper end of the partition plate 23 and the side wall inner surface 21a by welding. Thus, by setting it as the displacement suppression part 5 whose cross-sectional shape is circular, the influence which it has on the flow of the liquid and vapor | steam inside the tower | column body 21 can be made small. Since the cross-sectional shape of the displacement suppressing portion 5 is not limited as described above, for example, a square pipe can be used. That is, various shapes of pipes can be used as the displacement suppression unit 5.

  However, the cross-sectional shape of the displacement suppression unit 5 is not limited to a circle as in the present embodiment, and may be various shapes such as a polygon. As a specific example (which is an example and not limited to this), an L shape, a “U” shape, and an H shape can be used. The L-shape can be implemented by using, for example, an equilateral angle steel or an unequal angle iron. When the L-shape is adopted, there is an advantage in that the material cost can be suppressed, especially because equilateral mountain-shaped steel is widely distributed in the market. The “U” shape can be implemented by using, for example, channel steel. When the “U” shape is adopted, welding along the “U” shape is advantageous in that the fixing strength to the inner wall surface 21a can be increased. The H-shape can be implemented by using, for example, H-shaped steel or I-shaped steel. When the H-shape is adopted, particularly H-shape steel or I-shape steel having various dimensions is in circulation, so that there is an advantage that a desired size can be easily selected.

  Moreover, the material of the displacement suppression part 5 is not specifically limited, It can select according to the property of the liquid and gas (vapor) which pass the inside of a tower. The displacement suppression unit 5 may be made of the same material as that of the partition plate 23 or may be made of a different material. In the case of the same material, since the corrosion characteristics are the same as those of the partition plate 23, there is an advantage that it is easy to design from a chemical viewpoint. On the other hand, in the case of different materials, there is an advantage that it is easy to realize the optimal displacement suppression unit 5 from a mechanical viewpoint. As an example, the displacement suppression unit 5 may be a pipe made of a stainless alloy (SUS304, SUS316, etc.) or a carbon steel pipe (STPG, etc.). Moreover, when using a round pipe as the displacement suppression part 5, as shown in FIG.3 (C), the liquid drain hole 51 penetrated to radial direction may be formed so that the liquid in a tower may escape from a hollow part. From the viewpoint of inhibiting corrosion.

  The displacement suppression part 5 is arrange | positioned in the part (space) in which the packing 22 does not exist inside the tower body 21. This arrangement eliminates the need for processing such as notching the filler 22 in order to arrange the displacement suppressing portion 5. For this reason, the volume of the filling 22 is not reduced, and the displacement restraining part 5 does not obstruct the flow of the liquid and vapor in the filling 22 so that the displacement is suppressed without affecting the performance of the filling 22. There is an advantage that part 5 can be arranged.

  Next, an example of a method for selecting a material used for the displacement suppressing unit 5 will be described. Both ends of the partition plate 23 in the horizontal direction are fixed to the side wall inner surface 21 a of the tower body 21. For this reason, the upper end of the partition plate 23 can be regarded as a both-ends fixed beam. The bending load (concentrated load) applied to the center is calculated backward from the allowable deflection dimension (corresponding to the deflection δ shown in FIG. 3B) at the center of the fixed both ends fixed beam. A material having a second moment of section capable of withstanding the bending load thus obtained is selected. However, this is only an example, and an optimum material can be selected by various methods. Since the displacement suppression unit 5 is placed in a high-temperature environment in the tower, the above selection has a margin in consideration of expansion deformation of the tower body 21, the partition plate 23, and the displacement suppression unit 5 due to heat. Do. For example, a material having a cross-sectional secondary moment equal to or greater than a value obtained by multiplying a cross-sectional secondary moment corresponding to the bending load obtained by the above calculation by a predetermined safety factor (2 in this embodiment) is selected. Further, although not essential, the deflection generated in the selected material is first calculated, and the material is selected so that the calculated value is a predetermined ratio (0.8 in this embodiment) with respect to the allowable deflection dimension. By correcting, it is possible to select a material that is optimized (that is, safe and material cost can be reduced).

  The configuration of the present embodiment is such that, for an existing distillation apparatus having a distillation column in which the inside of the column body is a single chamber in the radial direction, for example, in a plurality of chambers so that different treatments can be performed with respect to distillation. It is also suitable to form a distillation column 2 that is a combined distillation column similar to that of the present embodiment by modifying the partition. Next, an example of this remodeling method will be described. The method of remodeling is not limited to this, and an optimal method can be appropriately selected according to the configuration of the existing distillation apparatus.

  For this remodeling, first of all the internal structure of the existing distillation apparatus is removed which is not necessary or obstructs construction. Thereafter, the plurality of partition plate dividing plates 231 are carried into the tower body 21. Then, a plurality of partition plate dividing plates 231 are sequentially stacked upward while fixing the horizontal end of each partition plate dividing plate 231 to the side wall inner surface 21 a of the tower body 21. At this time, when the width dimension of each partition plate dividing plate 231 is smaller than the diameter dimension of the tower body 21, a support material made of a channel material or the like is attached to the side wall inner surface 21a of the tower body 21 in the vertical direction. Thus, adjustment is made so as to eliminate a gap generated between the tower body 21 and each partition plate dividing plate 231. Next, the displacement suppression part 5 separate from the partition plate dividing plate 231 is fixed to the upper part of the partition plate dividing plate 231. In this way, the existing distillation apparatus can be modified to have a partition plate 23 that is prevented from being deformed so that the upper end is warped. It is also possible to sequentially stack a plurality of partition plate dividing plates 231 downward. In this case, the displacement suppression unit 5 is fixed to the lower part of the partition plate dividing plate 231. In this way, it can be provided with the partition plate 23 in which the lower end is prevented from being deformed. Regarding the position where the displacement suppression unit 5 is fixed, preferably, the uppermost part of the uppermost partition plate dividing plate 231 which is the last in the overlapping order is a displacement suppression separate from the partition plate dividing plate 231. The part 5 is fixed. In addition, when the plurality of partition plate dividing plates 231 are sequentially stacked downward, the partition plate dividing plate 231 and the lower part of the partition plate dividing plate 231 positioned at the bottom, which is the last in the stacking order, Fixes a separate displacement restraint 5.

  In addition, as mentioned above, it is preferable that each partition plate dividing plate 231 and the displacement suppression unit 5 have dimensions that can pass through the opening provided in the tower body 21. By doing so, since the remodeling work can be carried out without expanding the opening of the tower body 21 or forming a new opening dedicated to carrying in the partition plate 23, the number of man-hours for the remodeling work is reduced. it can.

  As mentioned above, although one Embodiment of this invention has been described, the distillation apparatus 1 and the distillation column 2 which concern on this invention are not limited only to the said embodiment, A various change is added in the range which does not deviate from the summary of this invention. be able to.

  For example, in the embodiment, the displacement suppression unit 5 is provided at the upper end of the partition plate 23. However, it is not limited to this, The displacement suppression part 5 may be provided in parts other than an edge part in the upper part or the lower part of the partition plate 23. FIG.

  Moreover, the displacement suppression part 5 can also be formed integrally with the partition plate 23. For example, by bending a portion including the upper end or the lower end of the partition plate 23, the bent portion (a part of the partition plate 23) can be used as the displacement suppression unit 5.

  Moreover, although the round pipe was used as the displacement suppression part 5 of the said embodiment, material is not limited to this. As described above, as an example, a rod-shaped material (including a tubular material), a strip-shaped material, an angle material, a channel material, an H-shaped material, or the like can be used.

  Moreover, the displacement suppression part 5 can also be provided intermittently (discontinuously) in the direction along the radial direction of the tower body 21 and the direction along the extending direction of the partition plate. Further, both ends or one end of the displacement suppressing unit 5 may not be connected to the tower body 21.

  Further, the displacement suppression unit 5 can also be used as a constituent member of the distillation column 2. For example, a part of the distributor or collector can be designed to serve as the displacement suppression unit 5.

  Further, the partition plate 23 of the above embodiment is composed of a plurality of partition plate dividing plates 231. However, the displacement suppression part 5 can also be provided with respect to the partition plate 23 which consists of a single (one piece) board.

DESCRIPTION OF SYMBOLS 1 Distillation apparatus 2 Distillation tower 21 Tower body 21a Side wall inner surface 22 Filler 23 Partition plate 231 Partition plate dividing plate 3 Condenser (condenser)
4 Evaporator 5 Displacement suppression part S2, S3 Partitioned room (section)

Claims (7)

A partition plate extending in the vertical direction for partitioning the inside of the tower body constituting the distillation tower into a plurality of chambers,
A displacement restraining portion located in an upper or lower portion of the partition plate in a direction along the radial direction of the tower body and in a direction along the extending direction of the partition plate, and having a higher bending rigidity than an intermediate portion in the vertical direction of the partition plate Distillation device equipped with.   The distillation apparatus according to claim 1, wherein the displacement suppression unit is configured as a separate body from the partition plate.   The distillation apparatus according to claim 2, wherein the displacement suppression unit is a rod-shaped body that is continuous from one end to the other end in a direction along a radial direction of the tower body and in a direction along which the partition plate extends.   The distillation apparatus according to claim 1, wherein the partition plate is configured by connecting a plurality of partition plate dividing plates.   The said displacement suppression part is a distillation apparatus in any one of Claims 1-4 arrange | positioned in the part which a packing does not exist inside the said column. Using multiple divider plates
While fixing the side end of each partition plate dividing plate to the inner wall of the side wall of the tower body constituting the distillation tower, the plurality of partition plate dividing plates are successively stacked upward or downward,
A method for remodeling a distillation apparatus, wherein a displacement suppression unit separate from the partition plate partition plate is fixed to an upper portion of the partition plate partition plate or a lower portion of the partition plate partition plate.   The method for remodeling a distillation apparatus according to claim 6, wherein each of the partition plate dividing plates and the displacement suppressing portion has a size that can pass through an opening provided in the tower body.

Images