JP7175793B2 - Packed tower and packing - Google Patents

Description

The present invention relates to packed columns and packings.

2. Description of the Related Art A packed column, in which a column body is filled with a packing, is widely used in a distillation column (rectification column), an absorption column, and the like in the field of chemical industry. In addition, the filling has a structure in which a plurality of corrugated sheet materials folded in a wave shape are laminated, and a plurality of grooves provided in parallel on both surfaces of the plurality of corrugated sheet materials intersect between adjacent corrugated sheet materials. have.

In a packed tower, packings are arranged inside the tower body so that the stacking direction of the corrugated sheet materials is perpendicular to the axial direction (height direction) of the tower body (radial direction), and the corrugated sheet materials are stacked. A plurality of packings are stacked in the height direction of the tower so that the stacking directions intersect each other.

In such a packed column, gas-liquid contact is performed on the surface of the packing, and the low boiling point fraction (gas phase) is transferred from the upper part of the column body by utilizing the boiling point difference of the raw material to be distilled. It is possible to fractionate (rectify) the high-boiling fractions (liquid phase) from the bottom side of the column body.

By the way, in a packed tower, as the height of the tower body increases, the liquid gathers on the outer peripheral portion of the packing and the inner wall surface of the tower body, and the liquid flows down along the outer peripheral portion of the packing and the inner wall surface of the tower body. is generated, making it difficult to achieve sufficient gas-liquid contact on the surface of the filling (see, for example, Patent Document 1 below).

Therefore, in Patent Document 1 below, as a measure to prevent drift, in the corrugated groove of the thin layer material constituting the packing, the diametrical direction of the lower part of the corrugated groove installed at an angle to the column axis of the packed tower It is disclosed that a notch portion is provided at the end portion by notching the upper surface of the end portion of the wave-shaped groove, or a bent portion is provided by bending the upper surface portion constituting the wave-shaped groove downward. .

JP-A-07-185316

However, the structure of the filler disclosed in Patent Document 1 described above has the drawback that the processing of the thin layer material (corrugated sheet material) is complicated, and the manufacturing cost of the filler increases.

The present invention has been proposed in view of such conventional circumstances, and a packed tower that has a simple structure, prevents the occurrence of drifting, and enables sufficient gas-liquid contact. and to provide fillings.

In order to achieve the above object, the present invention provides the following means.
[1] A packed tower in which the inside of the tower body is filled with packing material,
The filling has a first corrugated sheet material and a second corrugated sheet material which are folded into a wave shape by repeating mountain folds and valley folds, and is provided in parallel on both surfaces of the first corrugated sheet material. so that the plurality of first grooves and the plurality of second grooves provided in parallel on both surfaces of the second corrugated plate material are inclined in opposite directions to each other with respect to the axial direction of the tower body, The first corrugated plate material and the second corrugated plate material are alternately laminated in a direction orthogonal to the axial direction of the tower body, and are arranged inside the tower body,
The first corrugated plate member has a pair of side end portions facing the inner wall surface of the tower body, and one side end portion where the upper end of the first groove portion is located extends along the inner wall surface of the tower body. and the other side end portion where the lower end of the first groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
The second corrugated plate member has a pair of side end portions facing the inner wall surface of the tower body, and one side end portion where the upper end of the second groove portion is located extends along the inner wall surface of the tower body. and the other side end portion where the lower end of the second groove portion is positioned is inclined in a direction away from the inner wall surface of the tower body.
[2] The packed tower according to [1], wherein the maximum width of the other side end spaced from the inner wall surface of the tower body is 1 to 10 mm.
[3] The packing is arranged between the first corrugated sheet material and the second corrugated sheet material while sequentially changing the widths of the first corrugated sheet material and the second corrugated sheet material according to the internal shape of the tower body. The packed tower according to the above [1] or [2], wherein the corrugated plate materials are alternately laminated and arranged inside the tower body.
[4] The packing is arranged in a state in which a plurality of the packings are laminated in the axial direction of the tower so that the lamination directions of the first corrugated plate material and the second corrugated plate material intersect. The packed tower according to any one of [1] to [3] above.
[5] The filler is fixed by a collar surrounding the first corrugated sheet material and the second corrugated sheet material in a state in which the first corrugated sheet material and the second corrugated sheet material are alternately laminated. The packed tower according to any one of [4].
[6] A packed column packing packed inside a column body,
A plurality of first corrugated sheet materials having a first corrugated sheet material and a second corrugated sheet material that are folded into a wave shape by repeating mountain folds and valley folds, and are provided in parallel on both surfaces of the first corrugated sheet material. and a plurality of second grooves provided in parallel on both surfaces of the second corrugated plate material are inclined in opposite directions to each other with respect to the axial direction of the tower body, so that the first wave Having a structure in which plate materials and the second corrugated plate materials are alternately laminated in a direction orthogonal to the axial direction of the tower body,
Of the pair of side end portions of the first corrugated sheet material facing the inner wall surface of the tower body, one side end portion where the upper end of the first groove portion is located is arranged along the inner wall surface of the tower body. and the other side end portion where the lower end of the first groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
Of the pair of side end portions of the second corrugated sheet material facing the inner wall surface of the tower body, one side end portion where the upper end of the second groove portion is located is arranged along the inner wall surface of the tower body. and so that the other side end portion where the lower end of the second groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
A filling characterized by having a structure in which said first corrugated sheet material and said second corrugated sheet material are alternately laminated and fixed by a collar surrounding the periphery thereof.
[7] The packing according to [6], wherein the maximum width of the other side end separated from the inner wall surface of the tower body is 1 to 10 mm.
[8] Alternating the first corrugated sheet material and the second corrugated sheet material while sequentially changing the widths of the first corrugated sheet material and the second corrugated sheet material according to the internal shape of the tower body. The packing according to the above [6] or [7], characterized in that it has a laminated structure.

As described above, according to the present invention, it is possible to provide a packed column and packing that have a simple structure, prevent the occurrence of drift, and allow sufficient gas-liquid contact. is.

1 is a longitudinal sectional view showing the configuration of a packed tower according to one embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view showing the configuration of the packed tower shown in FIG. 1; FIG. 2 is a perspective view showing the configuration of the packing provided in the packed tower shown in FIG. 1; Fig. 4 is a perspective view showing an enlarged part of the filling shown in Fig. 3; FIG. 4 is a plan view showing a state in which the first corrugated sheet material constituting the packing shown in FIG. 3 is arranged in the tower body; FIG. 4 is a plan view showing a state in which the second corrugated sheet material constituting the packing shown in FIG. 3 is arranged in the tower body; It is a schematic diagram for demonstrating the lamination structure of the 1st corrugated sheet material which comprises the filling shown in FIG. 3, and the 2nd corrugated sheet material.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the drawings used in the following description, the scale of dimensions may vary depending on the component in order to make it easier to see each component, and the dimensional ratio of each component may not necessarily be the same as the actual do not have. In addition, the materials, dimensions, etc. exemplified in the following description are examples, and the present invention is not necessarily limited to them, and it is possible to implement them by appropriately changing them without changing the gist of the present invention. .

(packed tower)
First, a packed tower 1 shown in FIGS. 1 and 2 will be described as an embodiment of the present invention.
FIG. 1 is a longitudinal sectional view showing the configuration of the packed tower 1. As shown in FIG. FIG. 2 is a cross-sectional view showing the configuration of the packed tower 1. As shown in FIG.

As shown in FIGS. 1 and 2, the packed tower 1 of the present embodiment includes a substantially cylindrical tower body 2 and packings 3 packed inside the tower body 2 . Inside the tower body 2, a plurality of packings 3 are arranged in a state of being stacked in the axial direction of the tower body 2 (hereinafter referred to as "the height direction of the tower body 2"). In addition, in FIG. 1, only two fillings 3 are illustrated for convenience.

In the packed column 1, gas-liquid contact is performed on the surface of the packing 3, and the low boiling point fraction (gas phase) is removed from the upper part of the column body 2 by utilizing the boiling point difference of the raw material to be distilled. It is possible to fractionate (rectify) the high-boiling fractions (liquid phase) from the bottom side of the column body 2, respectively.

Note that the tower body 2 may have any structure as long as it can be filled with the later-described packing material 3, and its shape, material, and the like are not particularly limited.

(Filling)
Next, a specific configuration of the filler 3 will be described with reference to FIGS. 1 to 7. FIG.
3 is a perspective view showing the configuration of the filler 3. As shown in FIG. FIG. 4 is a perspective view showing an enlarged part of the filler 3. As shown in FIG. 5(a) and 5(b) are plan views showing a state in which the first corrugated sheet material 4 constituting the packing 3 is arranged in the tower body 2. FIG. 6(a) and 6(b) are plan views showing a state in which the second corrugated sheet material 5 constituting the packing 3 is arranged in the tower body 2. FIG. FIGS. 7A to 7D are schematic diagrams for explaining the laminated structure of the first corrugated sheet material 4 and the second corrugated sheet material 5 constituting the filler 3. FIG.

The packing 3 of this embodiment is a regular packing as shown in FIGS. It has a second corrugated sheet material 5 . On both surfaces of the first corrugated sheet material 4, a plurality of first grooves 4a are provided side by side at constant intervals and depths. Similarly, on both surfaces of the second corrugated sheet material 5, a plurality of second grooves 5a are provided in parallel at constant intervals and depths.

The first corrugated sheet material 4 and the second corrugated sheet material 5 are made of thin sheets of aluminum, copper, stainless steel, or the like, and have a thickness of about 0.1 to 0.3 mm. Further, as for the shape of the first corrugated plate material 4 and the second corrugated plate material 5, even if it is a corrugated shape that is repeatedly bent in a curved state, it is a corrugated shape that is repeatedly bent in a bent state. good too.

As shown in FIGS. 2, 3 and 4, the packing 3 is arranged so that the first groove 4a and the second groove 5a are inclined in opposite directions with respect to the height direction of the tower body 2. It has a structure in which the first corrugated plate material 4 and the second corrugated plate material 5 are alternately laminated in a direction orthogonal to the axial direction of the tower body 2 (hereinafter referred to as "radial direction of the tower body 2"). there is Also, the first groove portion 4a and the second groove portion 5a are inclined in opposite directions with respect to the height direction of the tower body 2 within an angle range of 30 to 60°.

Furthermore, the packing 3 is arranged in such a manner that the widths of the first corrugated plate material 4 and the second corrugated plate material 5 are sequentially changed according to the internal shape of the tower body 2, and the first corrugated plate material 4 and the second corrugated plate material 5 are arranged. 5 are alternately laminated (superimposed) and fixed (bound) by a ring-shaped collar 6 surrounding the periphery. As a result, the packing material 3 is formed in a substantially cylindrical shape as a whole, and can be packed in the inside of the tower body 2 in the radial direction of the tower body 2 with almost no gaps.

In this embodiment, the structure is such that the central portion of the filler 3 in the axial direction (hereinafter referred to as "the height direction of the filler 3") is fixed by one collar 6. As shown in FIG. It is also possible to fix the filler 3 by arranging a plurality of collars 6 side by side in the height direction of the filler 3 . The collar 6 is not particularly limited, and may have any structure that has been generally used.

As shown in FIG. 1 , the plurality of packings 3 are arranged such that the lamination directions of the first corrugated plate material 4 and the second corrugated plate material 5 intersect between the packings 3 adjacent to each other inside the tower body 2 (this In the embodiment, they are arranged in a layered (stacked) state in the height direction of the tower body 2 so as to be perpendicular to each other.

As shown in FIGS. 5(a) and 5(b), the first corrugated plate material 4 constituting the packing material 3 has a pair of side ends 4b and 4c facing the inner wall surface 2a of the tower body 2. One side end 4b where the upper end of the first groove 4a is located is arranged along the inner wall surface 2a of the tower body 2, and the other side end 4c where the lower end of the first groove 4a is located is the tower body. 2 is inclined in a direction away from the inner wall surface 2a.

Among them, the first corrugated plate member 41 shown in FIG. 5(a) has the lower end of the first corrugated plate member 4 narrower than the upper end, so that the lower end of the other side end portion 4c is wider than the upper end. It is arranged apart from the inner wall surface 2 a of the body 2 . On the other hand, in the first corrugated plate member 42 shown in FIG. 5(b), the upper end of the first corrugated plate member 4 is narrower than the lower end, so that the upper end of the other side end portion 4c is wider than the lower end of the tower body. 2 is spaced apart from the inner wall surface 2a. The first corrugated sheet materials 41 and 42 shown in FIGS. 5(a) and 5(b) are collectively treated as the first corrugated sheet material 4 unless otherwise distinguished.

Similarly, the second corrugated plate material 5 constituting the packing 3 has a pair of side ends 5b and 5c facing the inner wall surface 2a of the tower body 2, as shown in FIGS. Among them, one side end portion 5b where the upper end of the second groove portion 5a is located is arranged along the inner wall surface 2a of the tower body 2, and the other side end portion 5c where the lower end of the second groove portion 5a is located. are disposed so as to be inclined away from the inner wall surface 2 a of the tower body 2 .

Among them, the second corrugated plate member 51 shown in FIG. 6(a) has a width narrower than the upper end at the lower end of the second corrugated plate member 5, so that the lower end of the other side end portion 5c is wider than the upper end. It is arranged apart from the inner wall surface 2 a of the body 2 . On the other hand, in the second corrugated plate material 52 shown in FIG. 6B, the upper end of the second corrugated plate member 4 is narrower than the lower end, so that the upper end of the other side end portion 5c is wider than the lower end of the tower body. 2 is spaced apart from the inner wall surface 2a. The second corrugated sheet materials 51 and 52 shown in FIGS. 6A and 6B are collectively treated as the second corrugated sheet material 5 unless otherwise distinguished.

In the packed tower 1 of the present embodiment, as shown in FIGS. 5 and 6, the maximum width D of the other side ends 4c, 5c separated from the inner wall surface 2a of the tower body 2 is 1 to 10 mm. preferable. Alternatively, it is preferable that the maximum width D is not more than twice the height (H1, H2 shown in FIG. 2) of the first and second corrugated plate members 4, 5. That is, the maximum width D corresponds to the difference in width between the upper end and the lower end of each of the first corrugated plate material 4 and the second corrugated plate material 5 .

When the separation width D in the packed tower 1 is larger than these upper limits, the gas rising in the packed tower 1 bypasses the packing 3, and sufficient gas-liquid contact can be made on the surface of the packing 3. becomes difficult. On the other hand, if the separation width D in the packed tower 1 is smaller than these lower limit values, the effect of preventing the drift of the liquid L at the outer peripheral portion of the packing 3 and the inner wall surface 2a of the tower body 2 is reduced.

As shown in FIGS. 7(a) to 7(d), the filling 3 of the present embodiment has a structure in which either the first corrugated plate members 41, 42 or the second corrugated plate members 51, 52 are combined. It is possible. That is, as shown in FIG. 7A, the first corrugated sheet material 41 and the second corrugated sheet material 51 may be alternately laminated in the radial direction of the tower body 2 . Moreover, as shown in FIG.7(b), it is good also as the structure which laminated|stacked the 1st corrugated-plate material 42 and the 2nd corrugated-plate material 52 alternately in the radial direction of the tower body 2. FIG. Alternatively, as shown in FIG. 7C, the first corrugated plate members 41 and the second corrugated plate members 52 may be alternately laminated in the radial direction of the tower body 2 . Alternatively, as shown in FIG. 7D, the first corrugated plate members 42 and the second corrugated plate members 51 may be alternately laminated in the radial direction of the tower body 2 . In addition to this, a configuration in which three of the first corrugated sheet materials 41 and 42 and the second corrugated sheet materials 51 and 52 are selected and combined, or a combination of the first corrugated sheet materials 41 and 42 and the second corrugated sheet materials A configuration in which all of 51 and 52 are combined is possible.

In the packed tower 1 having the packings 3 having the above structure, the liquid L adhering to the first and second corrugated plate members 4 and 5 due to the gas-liquid contact described above flows into the first and second grooves 4a and 5. It flows down along 5a. At this time, the liquid L flows from the first side ends 4b and 5b where the upper ends of the first and second grooves 4a and 5a are located to the second side ends where the lower ends of the first and second grooves 4a and 5a are located. It runs down obliquely toward the side ends 4c and 5c of the . As a result, the liquid L that has reached the lower ends of the first and second grooves 4a and 5a flows down along the second side ends 4c and 5c in a direction away from the inner wall surface 2a of the tower body 2.

On the other hand, the second side end portion 4c of the first corrugated plate member 4 is adjacent to the second corrugated plate member 5 arranged along the inner wall surface 2a of the tower body 2 at the first side end portion 5b. . Similarly, the second side edge 5c of the second corrugated sheet material 5 is adjacent to the first corrugated sheet material 4 whose first side edge 4b is arranged along the inner wall surface 2a of the tower body 2. there is

In this case, the liquid L flowing down along the second side edges 4c, 5c of the first and second corrugated plate members 4, 5 is 5a, 4a and flows down along the adjacent second and first grooves 5a, 4a.

That is, the liquid L is again distributed from the first side ends 4b, 5b where the upper ends of the first and second grooves 4a, 5a are located, to the first side ends 4b, 5b where the lower ends of the first and second grooves 4a, 5a are located. 2 runs obliquely toward the side ends 4c, 5c.

Therefore, the liquid L adhering to the first and second corrugated plate members 4 and 5 due to the gas-liquid contact described above is transferred to the first and second corrugated plate members 4 and 5 arranged along the inner wall surface 2a of the tower body 2. The second side ends 4c of the first and second corrugated plate members 4, 5 arranged to be inclined in a direction away from the inner wall surface 2a of the tower body 2 from the first side ends 4b, 5b of the , 5c.

As a result, in the packed tower 1 of the present embodiment, the liquid L flowing down along the first and second grooves 4a and 5a can be guided away from the inner wall surface 2a of the tower body 2. . That is, it is possible to prevent the liquid L from gathering on the outer peripheral portion of the packing 3 and the inner wall surface 2a of the column body 2 and flowing down along the outer peripheral portion of the packing 3 and the inner wall surface 2a. .

As described above, in the packed column 1 of the present embodiment, the packings 3 having the above-described simple structure are used to prevent the occurrence of drift in the inside of the column body 2, and the surface of the packings 3 is sufficiently gas-liquid contact. As a result, in the packed column 1 of the present embodiment, it is possible to perform fractionation (rectification) at low cost and with high efficiency.

It should be noted that the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
For example, the first and second corrugated sheet materials 4 and 5 have a configuration in which the second side ends 4c and 5c are linearly inclined. , 5c may be curved, or the second side ends 4c, 5c may be inclined stepwise.

REFERENCE SIGNS LIST 1 packed tower 2 tower body 3 packing material 4, 41, 42 first corrugated sheet material 4a first groove 4b one side end 4c other side end 5, 51, 52 second 2 Corrugated plate material 5a Second groove 5b One side end 5c The other side end 6 Collar L Liquid

Claims (8)

A packed tower in which the inside of the tower body is filled with packing,
The filling has a first corrugated sheet material and a second corrugated sheet material which are folded into a wave shape by repeating mountain folds and valley folds, and is provided in parallel on both surfaces of the first corrugated sheet material. so that the plurality of first grooves and the plurality of second grooves provided in parallel on both surfaces of the second corrugated plate material are inclined in opposite directions to each other with respect to the axial direction of the tower body, The first corrugated plate material and the second corrugated plate material are alternately laminated in a direction orthogonal to the axial direction of the tower body, and are arranged inside the tower body,
The first corrugated plate member has a pair of side end portions facing the inner wall surface of the tower body, and one side end portion where the upper end of the first groove portion is located extends along the inner wall surface of the tower body. and the other side end portion where the lower end of the first groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
The second corrugated plate member has a pair of side end portions facing the inner wall surface of the tower body, and one side end portion where the upper end of the second groove portion is located extends along the inner wall surface of the tower body. and the other side end portion where the lower end of the second groove portion is positioned is inclined in a direction away from the inner wall surface of the tower body. 2. The packed tower according to claim 1, wherein the maximum width of said other side end spaced from the inner wall surface of said tower body is 1 to 10 mm. The packing is composed of the first corrugated sheet material and the second corrugated sheet material while sequentially changing the widths of the first corrugated sheet material and the second corrugated sheet material in accordance with the internal shape of the tower body. 3. The packed tower according to claim 1 or 2, wherein the packed tower is arranged inside the tower body in a state of being alternately laminated. A plurality of the packings are arranged in a state of being laminated in the axial direction of the tower so that the lamination directions of the first corrugated plate material and the second corrugated plate material intersect. The packed tower according to any one of items 1 to 3. 5. The packing according to any one of claims 1 to 4, wherein the first corrugated sheet material and the second corrugated sheet material are alternately laminated and fixed by a collar surrounding the filling. or the packed tower according to item 1. A packing of a packed column filled inside the column body,
A plurality of first corrugated sheet materials having a first corrugated sheet material and a second corrugated sheet material that are folded into a wave shape by repeating mountain folds and valley folds, and are provided in parallel on both surfaces of the first corrugated sheet material. and a plurality of second grooves provided in parallel on both surfaces of the second corrugated plate material are inclined in opposite directions to each other with respect to the axial direction of the tower body, so that the first wave Having a structure in which plate materials and the second corrugated plate materials are alternately laminated in a direction orthogonal to the axial direction of the tower body,
Of the pair of side end portions of the first corrugated sheet material facing the inner wall surface of the tower body, one side end portion where the upper end of the first groove portion is located is arranged along the inner wall surface of the tower body. and the other side end portion where the lower end of the first groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
Of the pair of side end portions of the second corrugated sheet material facing the inner wall surface of the tower body, one side end portion where the upper end of the second groove portion is located is arranged along the inner wall surface of the tower body. and so that the other side end portion where the lower end of the second groove portion is located is inclined in a direction away from the inner wall surface of the tower body,
A filling characterized by having a structure in which said first corrugated sheet material and said second corrugated sheet material are alternately laminated and fixed by a collar surrounding the periphery thereof. 7. The packing according to claim 6, wherein the maximum width of said other side end separated from the inner wall surface of said tower body is 1 to 10 mm. The first corrugated sheet material and the second corrugated sheet material are alternately laminated while sequentially changing the widths of the first corrugated sheet material and the second corrugated sheet material according to the internal shape of the tower body. 8. A packing according to claim 6 or 7, characterized in that it has a structure.

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