A double heat flow exchange sieve tray column

Abstract

The utility model discloses a double heat flow exchange sieve plate tray, including tower board and cap cover, and the tower board is equipped with two parallel interval board holes, and the far end of two board holes is equipped with the convex sill, and the cap cover is set up in pairs, and the bottom of two cap covers is sealedly connected with the tower board, and two cap covers are communicated with two board holes respectively, and the opposite surface of two cap covers is equipped with a plurality of pair of left holes and a plurality of pair of right holes respectively, and each pair of left hole and each pair of right hole are staggered, through the setting of board hole, reduce the air resistance, make the whole pressure drop reduce, reduce the energy consumption, and through the staggered setting of pair of left hole and pair of right hole, make cap cover left and right can all emit gas, and the liquid mist that pair of left hole and pair of right hole emit can all be shielded, effectively reduce the mist entrainment between two cap covers, improve the mass transfer efficiency of tray.

Description

Technical Field

[0001] This utility model relates to the field of chemical mass transfer equipment technology, specifically to a dual heat flow exchange sieve tray tower. Background Technology

[0002] The development and production of the chemical industry are inseparable from the continuous development and progress of towers and their internal components. Among them, tower internals play a crucial role, especially in terms of tower separation efficiency and tower pressure drop control. Therefore, the form and structure of tower internals are also the focus of research. For example, the utility model patent with authorization announcement number CN218945097U entitled "A Novel Mass Transfer Tray" includes a tower tray with multiple caps evenly distributed on it. The lower part of the caps is evenly provided with multiple sieve holes on the tower tray. The gas phase rises from below the tower tray through the sieve holes and bubbles with the liquid on the tower tray. The arrangement of the sieve holes enhances gas-liquid mass transfer and ensures gas-liquid separation. However, under high operating loads, this scheme has a lot of mist entrainment, resulting in low mass transfer efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a dual heat flow exchange sieve tray to solve the technical problem that the tray in the prior art has a lot of mist entrainment under high operating load, resulting in low mass transfer efficiency.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a dual heat flow exchange sieve tray, including a tray and a cap. The tray has two parallel and spaced-apart plate holes. Each of the two plate holes has a raised sill at the far end. The caps are arranged in pairs. The bottom ends of the two caps are sealed to the tray and are connected to the two plate holes respectively. The opposite surfaces of the two caps are provided with a plurality of counter-flush left holes and a plurality of counter-flush right holes, and the counter-flush left holes and counter-flush right holes are staggered.

[0006] In some embodiments, a first air intake channel is provided on both opposite sides of the two caps, and both first air intake channels are located at the top of the two caps.

[0007] In some embodiments, a plurality of first air holes are provided on both opposite sides of the two caps.

[0008] In some embodiments, a second air intake channel is provided on both sides of the two caps, and both second air intake channels are located at the bottom of the two caps.

[0009] In some embodiments, the system further includes a top plate, which is provided in pairs and is respectively sealed to the top of the two caps, and both top plates are in an inclined state.

[0010] In some embodiments, the tray has two sets of sieve holes, and the two sets of sieve holes are respectively located on one side of the two protruding sills.

[0011] In some embodiments, the two top plates project onto the tower plate to cover all of the sieve holes.

[0012] In some embodiments, the ratio of the area of ​​each of the sieve holes to the area of ​​each of the plate holes is 0.1:0.75.

[0013] In some embodiments, side plates are fixedly connected to both opposite ends of the two top plates.

[0014] In some embodiments, both side plates are provided with a plurality of second air holes.

[0015] Compared with the prior art, the dual heat flow exchange sieve tray provided by this utility model reduces gas resistance through the arrangement of plate holes, thereby reducing the overall pressure drop and energy consumption. Furthermore, the staggered arrangement of the left and right flushing holes allows air to exit from both sides of the cap, and the liquid droplets ejected from both the left and right flushing holes can be blocked, effectively reducing the entrainment of mist between the two caps and improving the mass transfer efficiency of the tray. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a dual heat flow exchange sieve tray provided in an embodiment of this utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the middle tower plate;

[0018] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle cap and the top plate.

[0019] Explanation of reference numerals in the attached drawings: 1. Tray; 11. Tray hole; 12. Threshold; 13. Sieve hole; 2. Cap; 21. Left counter-flush hole; 22. Right counter-flush hole; 23. First air intake channel; 24. First air vent; 25. Second air intake channel; 3. Top plate; 31. Side plate; 311. Second air vent. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0021] To address the technical problem of excessive mist entrainment and low mass transfer efficiency in trays under high operating loads, this invention provides a dual heat flow exchange sieve tray, which can reduce mist entrainment and improve mass transfer efficiency.

[0022] It should be noted that the dual heat flow exchange sieve tray described in this utility model is used in, but not limited to, sieve trays. For ease of explanation, this utility model only uses the application of a dual heat flow exchange sieve tray to a sieve tray as an example. The principle of applying a dual heat flow exchange sieve tray to other types of equipment is essentially the same as that applied to sieve trays, and will not be elaborated here.

[0023] Please see Figures 1-3 ,in Figure 1 This is a schematic diagram of the structure of a dual heat flow exchange sieve tray in one embodiment of the present invention. The dual heat flow exchange sieve tray includes a tray 1 and a cap 2. The tray 1 has two parallel and spaced-apart plate holes 11. Each of the two plate holes 11 has a protrusion 12 at the far end. The caps 2 are arranged in pairs. The bottom ends of the two caps 2 are sealed to the tray 1, and the two caps 2 are respectively connected to the two plate holes 11. The opposite surfaces of the two caps 2 are respectively provided with a plurality of counter-flush left holes 21 and a plurality of counter-flush right holes 22, and the counter-flush left holes 21 and the counter-flush right holes 22 are staggered.

[0024] In this embodiment, the arrangement of the plate hole 11 and the sill 12 reduces air resistance, thereby reducing the overall pressure drop and energy consumption, and also prevents liquid leakage. Furthermore, the staggered arrangement of the left flushing hole 21 and the right flushing hole 22 allows air to exit from both sides of the cap 2, and the liquid droplets sprayed from the left flushing hole 21 and the right flushing hole 22 can be blocked, effectively reducing the entrainment of mist between the two caps 2 and improving the mass transfer efficiency of the tray.

[0025] Furthermore, the distance between the two caps 2 is 1cm to 3cm. The distance can be determined according to the required air velocity, that is, the distance between the two plate holes 11 can be determined.

[0026] It should be noted that two parallel and spaced plate holes 11 form a group, and several groups are evenly distributed on the tray 1, that is, there are also several pairs of caps 2, and each group of plate holes 11 corresponds one-to-one with each pair of caps 2.

[0027] Preferably, the opposing surfaces of the two caps 2 are perpendicular to each other with respect to the tower plate 1, and the opposing surfaces of the two caps 2 are inclined, so that the caps 2 have a right trapezoidal structure, which makes it easier for the gas to enter the caps 2 and increase the gas velocity as the internal space gradually shrinks from bottom to top.

[0028] Furthermore, the combination of the plate orifice 11 and the cap 2 reduces the gas flow rate in the internal local area, effectively reducing the degree of mist entrainment and improving the mass transfer efficiency of the tray.

[0029] In one embodiment, a first air intake channel 23 is provided on both opposite sides of the two caps 2, and both first air intake channels 23 are located at the top of the two caps 2.

[0030] In one embodiment, several first air holes 24 are provided on both opposite sides of the two caps 2.

[0031] In this embodiment, the first vent 24 can be any shape, such as circular, square, keyway, or irregular. Gas is ejected from the first vent 24. Under the same opening ratio, the area of ​​the plate hole 11 is reduced. When operating under low load conditions, the pressure drop of the gas through the first vent 24 is large. The gas velocity through the first vent 24 is lower than that through the plate hole 11, while the gas velocity through the plate hole 11 is higher. Since the gas velocity at the leakage point of the three-dimensional mass transfer tray is higher than that of the tray with sieve hole 13, the average lower limit gas velocity of the tray leakage is reduced.

[0032] In one embodiment, a second air intake channel 25 is provided on both sides of the two caps 2, and both second air intake channels 25 are located at the bottom of the two caps 2.

[0033] In this embodiment, it is convenient for gas to enter the upper part of the tower plate 1 from the second air inlet channel 25 and come into contact with the liquid.

[0034] In one embodiment, a top plate 3 is also included. The top plates 3 are arranged in pairs, and the two top plates 3 are respectively sealed and connected to the top of the two caps 2, and both top plates 3 are in an inclined state.

[0035] In this embodiment, the inclined setting of the top plate 3 eliminates the traditional flat top structure, thereby eliminating the dead zone formed by the low degree of gas and liquid phase flow at the top, avoiding the accumulation of easily scaled substances, and increasing the fluidity of the liquid phase.

[0036] In one embodiment, the tower plate 1 has two sets of sieve holes 13, and the two sets of sieve holes 13 are respectively located on one side of the two protruding sills 12.

[0037] In one embodiment, the two top plates 3 project onto the tower plate 1 to cover all the sieve holes 13.

[0038] In this embodiment, the top plate 3 and the sieve holes 13 can block the liquid droplets sprayed from the sieve holes 13, reduce the entrainment of droplets at the sieve holes 13, increase the operating limit of the tray, and improve the mass transfer efficiency.

[0039] In one embodiment, the ratio of the area of ​​each sieve hole 13 to the area of ​​each plate hole 11 is 0.1:0.75.

[0040] In this embodiment, by controlling the ratio of sieve holes 13 to plate holes 11, the adjustment range of the tray can be increased, maximizing the operational flexibility of the tower.

[0041] In one embodiment, side plates 31 are fixedly connected to both ends of the two top plates 3 facing away from each other.

[0042] In this embodiment, the distance between the side plate 31 and the cap 2 is adjustable. When the distance is large, it can reduce the obstruction to the gas phase channel and reduce the gas phase flow velocity in the area, thereby reducing the degree of mist entrainment and improving the separation efficiency.

[0043] In one embodiment, both side plates 31 are provided with a plurality of second air holes 311.

[0044] In this embodiment, the top plate 3 and the top of the cap 2 are connected by welding or other means, and the side plate 31 and the top plate 3 are sealed together by welding, bonding or other means. Alternatively, they can be formed in one piece. The second vent 311 can be any shape, such as round, square, keyway, or irregular. Gas is ejected from the second vent 311. The inverted U-shaped arrangement of the side plate 31 and the top plate 3 can suppress the entrainment of mist droplets.

[0045] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0046] First, based on the required spacing between the two caps 2, the spacing between each pair of plate holes 11 is determined. Then, several pairs of parallel, spaced plate holes 11 are evenly opened on the circular tray 1. Next, a raised sill 12 is welded to the far ends of each pair of plate holes 11, and a sieve hole 13 is opened on one side of the raised sill 12, thus completing the processing of the tray 1. Then, using a hole-opening device, a left-flush hole 21, a right-flush hole 22, a first air hole 24, and a second air hole 311 are respectively opened on the side plate 31 and the cap 2. The first air intake channel 23 and the second air intake channel 25 are then sealed and welded to the top of each top plate 3 and the top of each cap 2. At the same time, the bottom of each pair of caps 2 is sealed and welded to the tray 1. Among them, two caps 2 with opposing left holes 21 and opposing right holes 22 are a pair. The opposing left holes 21 and opposing right holes 22 are arranged opposite to each other. By utilizing the characteristics of staggered distribution, the sprayed liquid droplets can be blocked by the side wall of the opposite cap 2, which effectively reduces the entrainment of mist droplets between the two caps 2 and improves the mass transfer efficiency of the tray.

[0047] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A dual heat flow exchange sieve tray, characterized in that, include: The tray has two parallel and spaced-apart perforations, and each end of the two perforations that is far apart has a sill. as well as The caps are arranged in pairs, with the bottom ends of the two caps sealed to the tower plate, and the two caps communicating with the two plate holes respectively. The opposite surfaces of the two caps are respectively provided with a number of counter-punch left holes and a number of counter-punch right holes, and the counter-punch left holes and counter-punch right holes are staggered.

2. The dual heat flow exchange sieve tray tower according to claim 1, characterized in that, Both of the two caps have a first air intake channel on opposite sides, and both first air intake channels are located at the top of the two caps.

3. The dual heat flow exchange sieve tray tower according to claim 1, characterized in that, Both of the caps have several first air holes on opposite sides.

4. The dual heat flow exchange sieve tray tower according to claim 1, characterized in that, A second air intake channel is provided on both sides of the two caps, and both second air intake channels are located at the bottom of the two caps.

5. A dual heat flow exchange sieve tray tower according to claim 1, characterized in that, It also includes a top plate, which is arranged in pairs. The two top plates are respectively sealed and connected to the top of the two caps, and both top plates are in an inclined state.

6. A dual heat flow exchange sieve tray tower according to claim 5, characterized in that, The tower plate has two sets of sieve holes, and the two sets of sieve holes are located on one side of the two protruding sills respectively.

7. A dual heat flow exchange sieve tray tower according to claim 6, characterized in that, The two top plates project onto the tower plate, covering all the sieve holes.

8. A dual heat flow exchange sieve tray tower according to claim 6, characterized in that, The ratio of the area of ​​each sieve hole to the area of ​​each plate hole is 0.1:0.

75.

9. A dual heat flow exchange sieve tray tower according to claim 5, characterized in that, Both of the top plates are fixedly connected to side plates at opposite ends.

10. A dual heat flow exchange sieve tray according to claim 9, characterized in that, Both side plates are provided with several second air holes.

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