CN216458897U - Cross-flow tower tray for acrylic acid absorption tower - Google Patents
Cross-flow tower tray for acrylic acid absorption tower Download PDFInfo
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- CN216458897U CN216458897U CN202123404308.7U CN202123404308U CN216458897U CN 216458897 U CN216458897 U CN 216458897U CN 202123404308 U CN202123404308 U CN 202123404308U CN 216458897 U CN216458897 U CN 216458897U
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- honeycomb duct
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Abstract
The application discloses acrylic acid is percolation tower tray for absorption tower belongs to acrylic acid production field for acrylic acid production, and it includes the disk body, and the border position department of disk body encloses the annular connecting plate that is equipped with the annular plate body and constitutes, and it has the connecting hole around its central axis equipartition to distribute on the annular connecting plate, be provided with liquid phase honeycomb duct, gaseous phase honeycomb duct on the disk body, liquid phase honeycomb duct and gaseous phase honeycomb duct interval distribution on the disk body are provided with the auxiliary hole on the disk body between adjacent liquid phase honeycomb duct, the gaseous phase honeycomb duct, and the through-hole of auxiliary hole for running through the disk body. In view of the technical scheme, the distribution pipe and the distributor in the acrylic acid absorption tower are replaced, so that the heat and mass transfer is ensured, the area which is possibly provided with dead zones in the acrylic acid is reduced, and the yield of the acrylic acid is ensured.
Description
Technical Field
The utility model belongs to acrylic acid production field, specifically speaking especially relates to an acrylic acid is cross-flow tray for absorption tower.
Background
Acrylic acid (chemical formula is C)3H4O2) The acrylic acid is an unsaturated fatty acid with double bonds, is an important organic chemical raw material and an important downstream product of propylene, the global demand of the acrylic acid is increased at a speed of more than 20 ten thousand tons every year, but the chemical property of the acrylic acid is very active, the vinyl group of the acrylic acid is extremely easy to self-polymerize or copolymerize with other monomers, compared with acrylic acid esters, the polymerization speed of the acrylic acid is higher, a large amount of heat is released in the process of acrylic acid polymerization, and once the polymerization occurs, the control is difficult, so that the prevention of the acrylic acid polymerization is a problem to be considered for each device of the acrylic acid.
In an acrylic acid absorption column, reduction of dead space (dead space generally means a region where mass and heat transfer are not smooth) of acrylic acid in the absorption column is one of important factors for preventing polymerization of acrylic acid. The dead zone of acrylic acid generally exists between a collector and a distributor of an acrylic acid absorption tower, because the concentration of acrylic acid at the lower part of the absorption tower is high, the thermal mass and heat transfer in the distribution pipe area between the lower part of the collector and the distributor are not smooth, and acrylic acid liquid drops stay, so that the acrylic acid polymerization phenomenon is easy to occur, the dead zone in the absorption tower is reduced as much as possible under the condition of ensuring the yield of acrylic acid, thereby reducing the occurrence of acrylic acid self-polymerization, and becoming one of the technical problems to be solved by the industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an acrylic acid is percolation tower tray for absorption tower, distribution pipe and distributor among its replacement acrylic acid absorption tower guarantee the heat and mass transfer, probably produce the region in blind spot in the reduction acrylic acid, ensure acrylic acid's yield.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
the utility model discloses in an acrylic acid absorbs tower and uses cross flow tower tray, including the disk body, the border position department of disk body encloses the annular connecting plate that is equipped with the annular plate body and constitutes, and it has the connecting hole around its central axis equipartition to distribute on the annular connecting plate, be provided with liquid phase honeycomb duct, gaseous phase honeycomb duct on the disk body, liquid phase honeycomb duct and gaseous phase honeycomb duct interval distribution on the disk body are provided with the auxiliary hole on the disk body between adjacent liquid phase honeycomb duct, the gaseous phase honeycomb duct, and the through-hole of auxiliary hole for running through the disk body.
Furthermore, the liquid-phase flow guide pipe and the gas-phase flow guide pipe in the utility model both comprise an expanding section, a fixed section and a necking section which are connected integrally and coaxially arranged, the fixed section and the disk body are fixed integrally, and the inner diameter of the expanding section is gradually increased in the process of extending from the fixed section to the outlet direction; the inner diameter of the necking section is gradually reduced in the process of extending from the fixed section to the outlet direction.
Further, say, the utility model discloses in the periphery side of throat section on distribute and have a plurality of supplementary diffluence holes, supplementary diffluence hole is around the central axis equipartition of throat section.
Furthermore, the flaring section of the liquid-phase flow guide pipe is positioned at the upper part of the tray body; and the necking section of the gas-phase flow guide pipe is positioned at the upper part of the tray body.
Furthermore, the inner diameter of the auxiliary hole in the utility model is 2/3 of the inner diameter of the fixed section, and the fixed section is 1/2 of the maximum inner diameter of the flaring section; the minimum inner diameter of the necking section is 1/2 of the inner diameter of the fixed section.
Further, say, the utility model discloses in the disk body drive the fixed horizontal reinforcing plate, the vertical reinforcing plate that is provided with rather than an organic whole in bottom, horizontal reinforcing plate sets up with vertical reinforcing plate is perpendicular, and the both ends and the annular connecting plate fixed connection of horizontal reinforcing plate and vertical reinforcing plate.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a structural style to the class tower tray carries out redesign for liquid phase and gaseous phase can conveniently pass through, improve the heat transfer efficiency of thermal mass, avoid the production of acrylic acid liquid and reduce the polymerization of acrylic acid, help improving the yield of acrylic acid in the absorption tower.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a first schematic view of the middle tray body and its attached structure.
Fig. 3 is a second schematic view of the middle tray body and its auxiliary structure.
Fig. 4 is a schematic structural view of the liquid-phase flow guide pipe and the gas-phase flow guide pipe of the present invention.
Fig. 5 is a cross-sectional view of the flow path formed by the middle gas-phase flow guide tube, the liquid-phase flow guide tube and the auxiliary hole of the present invention.
In the figure: 1. an annular connecting plate; 2. connecting holes; 3. a liquid-phase flow guide pipe; 4. a tray body; 5. a gas-phase draft tube; 6. an auxiliary hole; 7. a transverse stiffener; 8. a longitudinal reinforcing plate; 9. a flared section; 10. a fixed section; 11. a necking section; 12. and (4) auxiliary flow distribution holes.
Detailed Description
The technical solution of the present invention will be further described and illustrated with reference to the following examples. It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear" and the like, which are all oriented to correspond to the visual orientations shown in the drawings of the specification, and should not be construed as limiting the scope or technical aspects of the present invention, but merely as providing those skilled in the art with a better understanding of the technical aspects of the present invention.
In the description of the present specification, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
A flow-through tower tray for an acrylic acid absorption tower comprises an annular connecting plate 1 which is connected and fixed with the inner wall of the absorption tower, wherein a plurality of connecting holes 2 which are uniformly distributed around the central axis of the annular connecting plate 1 are processed on the annular connecting plate 1; the inner wall of the annular connecting plate 1 is connected with the edge of the disc body 4 and is fixed with the edge into a whole; the tray body 4 is a circular plate body, and a transverse reinforcing plate 7 and a longitudinal reinforcing plate 8 which are integrated with the tray body are arranged on the bottom surface of the tray body; the liquid phase honeycomb duct 3, the gaseous phase honeycomb duct 5 that the interval distributes are connected with fixedly on the disk body 4, gaseous phase honeycomb duct 5, liquid phase honeycomb duct 3's structure is the same, all includes flaring section 9, canned paragraph 10, the throat section 11 that connects gradually, canned paragraph 10 pegs graft in the through-hole of disk body 4 and rather than the shutoff fixed as an organic whole. Flaring section 9 is the toper body, and its bottom is connected as an organic wholely with fixed segment 10, and its top opening, flaring section 9's internal diameter increases gradually in the direction of bottom to top opening to reach the maximize at the top opening part. The bottom end of the fixed section 10 is connected with the top end of a necking section 11, the outlet of the necking section 11 is positioned at the bottom end, the inner diameter of the necking section 11 is gradually reduced from the top end to the bottom end of the necking section, and the inner diameter of the outlet at the bottom end of the necking section 11 is the smallest. A plurality of auxiliary shunting holes 12 are processed on the outer wall of the necking section 11, and the auxiliary shunting holes 12 are uniformly distributed around the central axis of the necking section 11. The gas-phase draft tube 5 is arranged in an inverted manner relative to the liquid-phase draft tube 3 and is vertical to the top surface and the bottom surface of the tray body 4.
Example 2
A flow-through tray for an acrylic acid absorption column, wherein said auxiliary hole 6 has an inner diameter of 2/3 which is the inner diameter of the fixed section 10, and said fixed section 10 is 1/2 which is the maximum inner diameter of the flared section 9; the minimum inner diameter of the reducing section 11 is 1/2 of the inner diameter of the fixed section 10. Auxiliary holes 6 are processed on the disc body 4 between the adjacent liquid-phase flow guide pipe 3 and the gas-phase flow guide pipe 5, and the bottom end and the top end opening of each auxiliary hole 6 are of flaring structures. The structure and connection relationship of the rest parts are the same as those described in any of the foregoing embodiments, and are not described herein again to avoid the tedious text.
On the basis of the above embodiments, the present invention proceeds with detailed descriptions of technical features and functions thereof, so as to help those skilled in the art fully understand the technical solution of the present invention and reproduce it.
As shown in fig. 1 to 5, the utility model discloses in acrylic acid absorption tower is with crossing flow tray, its disk body 4 is circular disk body, and it has liquid phase honeycomb duct 3, the gaseous phase honeycomb duct 5 that a plurality of mutual intervals set up to distribute on disk body 4 constitute the air current passageway that is close "Z" shape between liquid phase honeycomb duct 3 and gaseous phase honeycomb duct 5, the auxiliary hole 6 simultaneously. The three channels are respectively used for realizing downward circulation of the liquid phase, upward circulation of the gas phase and mixed auxiliary circulation of the liquid phase and the gas phase, and the circulation of the three channels realizes the redistribution of the gas phase and the liquid phase and the effective transmission of heat of the thermal mass of the flow-through tray and reduces the problem of unsmooth heat transmission of the thermal mass.
The present invention relates to an air flow passage that is close to "Z" shape, and the air flow passage that is close to "Z" shape and is constituted by the same liquid-phase draft tube 3 or the gas-phase draft tube 5, for example, it is constituted by two sets of different air flow passages a and B, air flow passages C and D as shown in fig. 5. Wherein the gas flow path a, the gas flow path B show the process of dispersing the gas phase from the bottom upward above the tray body 4 after passing through the tray body 4, and the gas flow path C, the gas flow path D show the process of dispersing the liquid phase from the top downward below the tray body 4 after passing through the tray body. The gas flow channels A and B can also realize liquid phase circulation, and the gas flow channels C and D can also realize gas phase circulation.
The utility model discloses in, can distribute as early as possible in order to realize gaseous phase, liquid phase when passing throat section 11, can distribute on the periphery lateral wall of throat section 11 has a plurality of supplementary diffluence orifices 12, and supplementary diffluence orifices 12 distribute around the central axis of throat section 11. The inner diameter of the auxiliary branch holes 12 is smaller than the outlet inner diameter of the throat section 11, but because the distribution number is large, when the liquid phase or the gas phase flows through, a part of the gas phase and the liquid phase are redistributed to both sides through the auxiliary branch holes 12.
The utility model discloses in, the internal diameter of flaring section 9 be greater than the internal diameter of canned paragraph 10, the aim at that sets up like this assists liquid phase and gaseous phase to enter into flaring section 9 as early as possible to make flaring section 9's entrance can cover the 4 surfaces of biggest disk body, improve the passing rate of gaseous phase and liquid phase. The liquid phase and the gas phase which cannot enter the liquid phase draft tube 3 and the gas phase draft tube 5 through the flaring segments pass through the tray body 4 through the Z-shaped gas flow channel described in the above paragraphs.
Finally, although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the present description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims (6)
1. The utility model provides an acrylic acid is percolation tower tray for absorption tower, includes disk body (4), and the border position department of disk body (4) encloses annular connecting plate (1) that is equipped with the annular plate body and constitutes, and it has connecting hole (2) around its central axis equipartition to distribute on annular connecting plate (1), its characterized in that: be provided with liquid phase honeycomb duct (3), gaseous phase honeycomb duct (5) on disk body (4), liquid phase honeycomb duct (3) and gaseous phase honeycomb duct (5) interval distribution on disk body (4) are provided with auxiliary hole (6) on disk body (4) between adjacent liquid phase honeycomb duct (3), gaseous phase honeycomb duct (5), and auxiliary hole (6) are the through-hole that runs through disk body (4).
2. The flow-through tray for an acrylic acid absorption column according to claim 1, wherein: the liquid-phase flow guide pipe (3) and the gas-phase flow guide pipe (5) respectively comprise an opening expanding section (9), a fixing section (10) and a necking section (11) which are integrally connected and coaxially arranged, the fixing section (10) and the tray body (4) are fixed into a whole, and the inner diameter of the opening expanding section (9) is gradually increased in the process of extending from the fixing section (10) to the outlet direction; the inner diameter of the necking section (11) is gradually reduced in the process of extending from the fixed section (10) to the outlet direction.
3. The flow-through tray for an acrylic acid absorption column according to claim 2, wherein: a plurality of auxiliary shunting holes (12) are distributed on the peripheral side surface of the necking section (11), and the auxiliary shunting holes (12) are uniformly distributed around the central axis of the necking section (11).
4. The flow-through tray for an acrylic acid absorption column according to claim 3, wherein: the flaring section (9) in the liquid-phase draft tube (3) is positioned at the upper part of the disc body (4); and the necking section (11) of the gas-phase draft tube (5) is positioned at the upper part of the disc body (4).
5. The flow-through tray for an acrylic acid absorption column according to claim 4, wherein: the inner diameter of the auxiliary hole (6) is 2/3 of the inner diameter of the fixed section (10), and the fixed section (10) is 1/2 of the maximum inner diameter of the flaring section (9); the minimum inner diameter of the reducing section (11) is 1/2 of the inner diameter of the fixed section (10).
6. The flow-through tray for an acrylic acid absorption column according to any one of claims 1 to 5, wherein: the tray body (4) drives the bottom to be fixedly provided with a transverse reinforcing plate (7) and a longitudinal reinforcing plate (8) which are integrated with the bottom, the transverse reinforcing plate (7) and the longitudinal reinforcing plate (8) are arranged perpendicularly, and the two ends of the transverse reinforcing plate (7) and the two ends of the longitudinal reinforcing plate (8) are fixedly connected with the annular connecting plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123404308.7U CN216458897U (en) | 2021-12-31 | 2021-12-31 | Cross-flow tower tray for acrylic acid absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123404308.7U CN216458897U (en) | 2021-12-31 | 2021-12-31 | Cross-flow tower tray for acrylic acid absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216458897U true CN216458897U (en) | 2022-05-10 |
Family
ID=81429295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123404308.7U Active CN216458897U (en) | 2021-12-31 | 2021-12-31 | Cross-flow tower tray for acrylic acid absorption tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216458897U (en) |
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2021
- 2021-12-31 CN CN202123404308.7U patent/CN216458897U/en active Active
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