Liquid inlet distributor of multi-section falling film absorber

Abstract

The utility model discloses a liquid inlet distributor of a multi-section falling film absorber, and relates to the technical field of falling film absorbers. The inlet liquid distributor of the multi-section falling film absorber comprises a falling film absorber main body, a first flange plate is fixedly connected to the top of the falling film absorber main body, an outer pipe is fixedly connected to the top of the first flange plate, and a second flange plate is attached to the top of the outer pipe. By arranging the fixing disc, the fusion disc and the like, after liquid enters the liquid passing groove and is sprayed out from the tail end of the water outlet pipe, due to flowing of the liquid and a gap between the water outlet pipe and the air outlet hole, air entering the outer pipe through the air inlet pipe can make full contact with water flow through the gap, and after the air enters the outer pipe, the air flow can be fully mixed. And the fixed disc and the fusion disc are in a high-pressure state, so that the fusion speed of the gas and the liquid is accelerated, and the working efficiency of the falling film absorber is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of falling film absorbers, in particular to a multi-stage falling film absorber liquid inlet distributor. Background Art

[0002] A multi-stage falling film absorber usually consists of multiple horizontal partitions or segments, dividing the absorption tower into multiple regions, each region having its own liquid distribution and gas-liquid contact area. This design makes the falling film process of the gas in the tower more orderly and sufficient, improving the mass transfer efficiency. The liquid inlet distributor of the falling film absorber is an important part of the falling film absorber, which is used to evenly distribute the liquid onto the falling film surface in the absorption tower to ensure sufficient contact and mass transfer between the gas and the liquid.

[0003] When the existing liquid inlet distributors fuse gas and liquid, most of them are carried out by direct spray mixing or direct contact mixing. The liquid inlet distributor may not be able to achieve completely uniform liquid distribution, resulting in insufficient contact between the gas and the liquid. Excessive or insufficient liquid in some regions will lead to a reduction in mass transfer efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a multi-stage falling film absorber liquid inlet distributor, which solves the problems that when the existing liquid inlet distributors fuse gas and liquid, most of them are carried out by direct spray mixing or direct contact mixing, the liquid inlet distributor may not be able to achieve completely uniform liquid distribution, resulting in insufficient contact between the gas and the liquid, excessive or insufficient liquid in some regions will lead to a reduction in mass transfer efficiency, and in the liquid inlet distributor, foam and droplets may be generated during the fusion process of gas and liquid, and these foam and droplets will reduce the surface area of gas-liquid contact and affect the mass transfer efficiency.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A multi-stage falling film absorber liquid inlet distributor, including the main body of the falling film absorber, a first flange is fixedly connected to the top of the main body of the falling film absorber, an outer tube is fixedly connected to the top of the first flange, a second flange is attached to the top of the outer tube, a tie bolt is fixedly installed at the connection between the first flange and the second flange, a jack is opened at the center of the inner part of the second flange, a positioning ring is fixedly connected to the inner part of the outer tube, a sealing ring is fixedly connected to the top of the positioning ring, a liquid inlet pipe is inserted into the inner part of the jack, a fixing plate is fixedly connected to the bottom of the liquid inlet pipe, a sealing gasket is fixedly connected to the upper surface of the fixing plate, a liquid passing groove is opened in the inner part of the fixing plate, positioning holes are equidistantly opened at the bottom of the fixing plate, a positioning block is fixedly installed in the inner part of the positioning hole, a water outlet pipe is hermetically inserted into the inner part of the positioning block, a threaded hole is opened at the center of the bottom of the fixing plate, a threaded rod is threadedly installed in the inner part of the threaded hole, a fusion plate is fixedly connected to the bottom of the threaded rod, air outlet holes are equidistantly opened on the surface of the fusion plate, and an air inlet pipe is fixedly connected to the outer surface of the outer tube.

[0006] Preferably, the top of the liquid inlet pipe extends to the upper surface of the second flange, and the inner part of the liquid inlet pipe is communicated with the inner part of the water outlet pipe through the liquid passing groove.

[0007] Preferably, the shapes of the positioning block and the water outlet pipe are matched, and both the positioning block and the water outlet pipe are hexagonal.

[0008] Preferably, the outer surface of the water outlet pipe is inserted into the inner part of the air outlet hole, and the diameter of the air outlet hole is larger than the outer diameter of the water outlet pipe.

[0009] Preferably, the bottom of the fusion plate is hermetically attached to the upper surface of the sealing ring, and the upper surface of the sealing gasket is hermetically attached to the bottom of the second flange.

[0010] Preferably, the inner part of the air inlet pipe is communicated with the inner part of the outer tube, and the air inlet pipe is located between the fixing plate and the fusion plate. Beneficial effects

[0011] The utility model provides a multi-stage falling film absorber liquid inlet distributor. Compared with the prior art, the following beneficial effects are achieved: [[ID=*22]]

[0012] 1. For this multi-stage falling film absorber liquid inlet distributor, by setting the fixing plate and the fusion plate, etc., when the liquid enters the liquid passing groove and sprays out from the end of the water outlet pipe, due to the flow of the liquid and the gap between the water outlet pipe and the air outlet hole, the gas entering the inner part of the outer tube through the air inlet pipe can fully contact the water flow through the gap. After the gas enters the inner part of the outer tube, a high-pressure state exists between the fixing plate and the fusion plate, which also accelerates the speed of gas-liquid fusion and improves the working efficiency of the falling film absorber.

[0013] 2. The liquid inlet distributor of this multi-stage falling film absorber can increase the contact area between gas and liquid and facilitate fusion by setting the water outlet pipe in a hexagonal shape. By setting positioning blocks, it is also convenient to disassemble, assemble and replace the water outlet pipe. By setting an assembled structure, it is convenient to disassemble, repair and replace internal parts, thus enhancing the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present utility model.

[0015] Figure 2 It is a schematic connection diagram of the outer pipe and the fixed disk in the present utility model.

[0016] Figure 3 It is a schematic connection diagram of the fixed disk and the water outlet pipe in the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the fixed disk in the present utility model.

[0018] In the figure: 1. Falling film absorber main body; 2. First flange; 3. Outer pipe; 4. Second flange; 5. Tie rod; 6. Jack hole; 7. Positioning ring; 8. Sealing ring; 9. Liquid inlet pipe; 10. Fixed disk; 11. Sealing gasket; 12. Liquid passing groove; 13. Positioning hole; 14. Positioning block; 15. Water outlet pipe; 16. Threaded hole; 17. Threaded rod; 18. Fusion disk; 19. Air outlet hole; 20. Air inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4, the present utility model provides a technical solution: a multi-stage falling film absorber liquid inlet distributor, including a falling film absorber main body 1. A first flange 2 is fixedly connected to the top of the falling film absorber main body 1. A second flange 4 is attached to the top of the first flange 2. A tie bolt 5 is fixedly installed at the connection between the first flange 2 and the second flange 4. A jack 6 is opened at the center of the inner part of the second flange 4. A positioning ring 7 is fixedly connected to the inner part of the outer tube 3. A sealing ring 8 is fixedly connected to the top of the positioning ring 7. A liquid inlet pipe 9 is inserted into the inner part of the jack 6. The top of the liquid inlet pipe 9 extends to the upper surface of the second flange 4. A fixed disk 10 is fixedly connected to the bottom of the liquid inlet pipe 9. A sealing gasket 11 is fixedly connected to the upper surface of the fixed disk 10. The upper surface of the sealing gasket 11 is hermetically attached to the bottom of the second flange 4. A liquid passing groove 12 is opened in the inner part of the fixed disk 10. Positioning holes 13 are equidistantly opened at the bottom of the fixed disk 10. A positioning block 14 is fixedly installed in the inner part of the positioning hole 13. A water outlet pipe 15 is hermetically inserted into the inner part of the positioning block 14. The inner part of the liquid inlet pipe 9 is communicated with the inner part of the water outlet pipe 15 through the liquid passing groove 12. A threaded hole 16 is opened at the center of the bottom of the fixed disk 10. A threaded rod 17 is threadedly installed in the inner part of the threaded hole 16. The bottom of the threaded rod 17 is fixedly connected to a fusion disk 18. The bottom of the fusion disk 18 is hermetically attached to the upper surface of the sealing ring 8. Air outlet holes 19 are equidistantly opened on the surface of the fusion disk 18. The outer surface of the water outlet pipe 15 is inserted into the inner part of the air outlet holes 19. The diameter of the air outlet holes 19 is larger than the outer diameter of the water outlet pipe 15. An air inlet pipe 20 is fixedly connected to the outer surface of the outer tube 3. The inner part of the air inlet pipe 20 is communicated with the inner part of the outer tube 3. The air inlet pipe 20 is located between the fixed disk 10 and the fusion disk 18. By setting the fixed disk 10 and the fusion disk 18, etc., when the liquid enters the liquid passing groove 12 and sprays out from the end of the water outlet pipe 15, due to the flow of the liquid and the gap between the water outlet pipe 15 and the air outlet holes 19, the gas entering the inner part of the outer tube 3 through the air inlet pipe 20 can fully contact the water flow through the gap. After the gas enters the inner part of the outer tube 3, a high-pressure state exists between the fixed disk 10 and the fusion disk 18, which also accelerates the speed of gas-liquid fusion and improves the working efficiency of the falling film absorber;

[0021] The shapes of the positioning block 14 and the water outlet pipe 15 match. Both the positioning block 14 and the water outlet pipe 15 are hexagonal in shape. By setting the water outlet pipe 15 to be hexagonal, the contact area between the gas and the liquid can be increased, which is convenient for fusion. By setting the positioning block 14, it is also convenient to disassemble and replace the water outlet pipe 15. By setting an assembled structure, it is convenient to disassemble and repair the internal parts when they need to be replaced, which enhances the practicality.

[0022] During operation, the exhaust gas enters the inner part of the outer tube 3 through the intake pipe 20, and the reaction liquid enters the inner part of the liquid passing tank 12 through the liquid inlet pipe 9 and then flows out through the water outlet pipe 15. After the gas enters the inner part of the outer tube 3, the space between the fixed disk 10 and the fusion disk 18 quickly becomes a high-pressure state. When the liquid enters the inner part of the liquid passing tank 12 and sprays out from the end of the water outlet pipe 15, due to the flow of the liquid and the gap between the water outlet pipe 15 and the air outlet hole 19, the gas entering the inner part of the outer tube 3 through the intake pipe 20 can fully contact the water flow through the gap. Due to the high-pressure state between the fixed disk 10 and the fusion disk 18, the speed of gas-liquid fusion is also accelerated, improving the working efficiency of the falling film absorber. Through the arrangement of the air outlet holes 19, the fused gas and liquid are evenly distributed and enter the main body 1 of the falling film absorber for the next working process.

[0023] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A multi-stage falling film absorber liquid inlet distributor, comprising a falling film absorber main body (1), characterized in that: A first flange (2) is fixedly connected to the top of the falling film absorber body (1). An outer pipe (3) is fixedly connected to the top of the first flange (2). A second flange (4) is attached to the top of the outer pipe (3). A tie bolt (5) is fixedly installed at the connection between the first flange (2) and the second flange (4). A jack (6) is provided at the center of the inner part of the second flange (4). A positioning ring (7) is fixedly connected to the inner part of the outer pipe (3). A sealing ring (8) is fixedly connected to the top of the positioning ring (7). A liquid inlet pipe (9) is inserted into the inner part of the jack (6). A fixing plate (10) is fixedly connected to the bottom of the liquid inlet pipe (9). A sealing gasket (11) is fixedly connected to the upper surface of the fixing plate (10). A liquid passing groove (12) is provided in the inner part of the fixing plate (10). Positioning holes (13) are equidistantly provided at the bottom of the fixing plate (10). A positioning block (14) is fixedly installed in the inner part of the positioning hole (13). A water outlet pipe (15) is hermetically inserted into the inner part of the positioning block (14). A threaded hole (16) is provided at the center of the bottom of the fixing plate (10). A threaded rod (17) is threadedly installed in the inner part of the threaded hole (16). A fusion plate (18) is fixedly connected to the bottom of the threaded rod (17). Air outlet holes (19) are equidistantly provided on the surface of the fusion plate (18). An air inlet pipe (20) is fixedly connected to the outer surface of the outer pipe (3).

2. The multi-stage falling film absorber liquid inlet distributor according to claim 1, characterized in that: The top of the liquid inlet pipe (9) extends to the upper surface of the second flange (4). The inner part of the liquid inlet pipe (9) is communicated with the inner part of the water outlet pipe (15) through the liquid passing groove (12).

3. The liquid inlet distributor of a multi-stage falling film absorber according to claim 1, characterized in that: The positioning block (14) and the water outlet pipe (15) are matched in shape. Both the positioning block (14) and the water outlet pipe (15) are hexagonal.

4. A liquid inlet distributor of a multi-stage falling film absorber according to claim 1, characterized in that: The outer surface of the water outlet pipe (15) is inserted into the inner part of the air outlet hole (19). The diameter of the air outlet hole (19) is larger than the outer diameter of the water outlet pipe (15).

5. A liquid inlet distributor of a multi-stage falling film absorber according to claim 1, characterized in that: The bottom of the fusion plate (18) is hermetically attached to the upper surface of the sealing ring (8). The upper surface of the sealing gasket (11) is hermetically attached to the bottom of the second flange (4).

6. The multi-stage falling film absorber liquid inlet distributor according to claim 1, characterized in that: The inner part of the air inlet pipe (20) is communicated with the inner part of the outer pipe (3). The air inlet pipe (20) is located between the fixing plate (10) and the fusion plate (18).

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