Ammonium sulfide absorption tower

Abstract

The utility model discloses an ammonium sulfide absorption tower and relates to the technical field of chemical equipment. Comprising a tower body, a carbon steel gas injection type filler supporting plate, a lower grid filler layer, an overflow groove type distributor, a grid plate type filler supporting plate, an upper grid filler layer, a calandria type distributor and a demister are sequentially arranged in the tower body from bottom to top, and a liquid storage tank is arranged at the bottom end of the tower body. According to the ammonium sulfide absorption tower, the carbon steel gas jet type filler supporting plate arranged on the lower layer has excellent fluid mechanical properties, gas and liquid flow channels are separated, gas is fed from the tower bottom, a gas phase is jetted to the filler layer through side holes in the supporting plate, the gas phase is uniformly distributed, and an overflow groove type distributor is arranged above the lower grid filler layer; the device has double effects of collection and redistribution, can effectively redistribute liquid, can effectively reduce the height of a tower, is uniform in gas-liquid distribution, large in spraying point density and relatively low in pressure drop of the distributor, and can ensure that the surface of the filler is fully wet.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to an ammonium sulfide absorption tower. Background Art

[0002] An absorption tower is a device used to treat harmful substances in exhaust gas. Its main function is to absorb pollutants in the exhaust gas into chemical absorbents and treat them. Absorption towers are widely used in environmental protection and chemical industries, and can effectively remove pollutants such as sulfur dioxide, ammonia, nitrogen oxides, etc. in exhaust gas. The principle of the absorption tower is to use chemical absorbents to react with pollutants in the exhaust gas. When the exhaust gas passes through the absorption tower, the pollutants come into contact with the chemical absorbents, and the pollutants are absorbed into the absorbent through reaction, and the absorbed substances are discharged from the equipment.

[0003] The existing absorption tower has an insufficient absorption efficiency. Due to the high tower body, the water mist sprayed from the top of the tower will gather during the falling process, and when the liquid load is small, it cannot effectively wet the filler surface, which reduces the mass transfer efficiency and the gas treatment efficiency. Utility Model Content

[0004] The utility model provides an ammonium sulfide absorption tower to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ammonium sulfide absorption tower, comprising a tower body, wherein the tower body is provided with a carbon steel gas jet filler support plate, a lower grid filler layer, an overflow trough distributor, a grid filler support plate, an upper grid filler layer, a pipe-type distributor and a demister in sequence from bottom to top, a liquid storage tank is provided at the bottom end of the tower body, and a circulating pump is installed on the liquid storage tank, the inlet end of the circulating pump is connected to the liquid storage tank through a pipeline, and the outlet end of the circulating pump is connected to a liquid infusion pipe, one interface of the liquid infusion pipe is connected to the pipe-type distributor, and the other interface of the liquid infusion pipe is connected to the overflow trough distributor, an air inlet is provided at the bottom of the tower body, and an air outlet is provided at the top.

[0006] Furthermore, observation windows are arranged on the side walls of the tower body, and the observation windows are evenly distributed on the tower body.

[0007] Furthermore, the air inlet is located below the carbon steel gas jet type packing support plate, the lower grid packing layer is located on the carbon steel gas jet type packing support plate, and the overflow trough distributor is located above the lower grid packing layer.

[0008] Furthermore, the upper grid filler layer is located on a grid plate filler support plate, and the row pipe distributor is located above the upper grid filler layer.

[0009] Furthermore, the liquid storage tank and the tower body are interconnected, and a filter screen is disposed between the two.

[0010] Furthermore, a liquid level meter is installed on the liquid storage tank, and a solenoid valve is provided between the liquid infusion tube and the circulation pump.

[0011] Compared with the prior art, the utility model provides an ammonium sulfide absorption tower, which has the following beneficial effects:

[0012] The ammonium sulfide absorption tower has a carbon steel gas injection type packing support plate arranged at the lower layer, which has excellent fluid mechanics properties, separates gas-liquid flow channels, and gas is fed into the tower from the bottom. The gas phase is sprayed toward the packing layer through the side openings on the support plate, and the gas phase is evenly distributed. The overflow trough distributor arranged above the lower grid packing layer has the dual effects of collection and redistribution, can effectively redistribute the liquid, and can reduce the effective tower height. The gas-liquid distribution is even, the spray point density is large, and the pressure drop of the distributor is low, which can ensure that the packing surface is fully wetted. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a side view of the utility model.

[0016] In the figure: 1. tower body; 2. carbon steel gas jet filler support plate; 3. lower grid filler layer; 4. overflow trough distributor; 5. grid filler support plate; 6. upper grid filler layer; 7. pipe distributor; 8. demister; 9. liquid storage tank; 10. circulating pump; 11. liquid infusion pipe; 12. air inlet; 13. air outlet; 14. observation window; 15. filter; 16. liquid level gauge; 17. solenoid valve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3The utility model discloses an ammonium sulfide absorption tower, comprising a tower body 1, wherein the tower body 1 is provided with a carbon steel gas jet packing support plate 2, a lower grid packing layer 3, an overflow trough distributor 4, a grid packing support plate 5, an upper grid packing layer 6, a row pipe distributor 7 and a demister 8 in sequence from bottom to top, the carbon steel gas jet packing support plate 2 arranged at the lower layer has excellent fluid mechanics performance, the gas-liquid flow channel is separated, the gas is fed from the bottom of the tower, the gas phase is sprayed to the packing layer through the side openings on the support plate, and the gas phase is evenly distributed, and the overflow trough distributor 4 arranged above the lower grid packing layer 3 has two collecting and redistributing The tower body 1 has a weight effect, can effectively redistribute the liquid, and can reduce the height of the effective tower. The gas-liquid distribution is uniform, the spray point density is large, and the pressure drop of the distributor is low, which can ensure that the surface of the filler is fully wetted. The bottom end of the tower body 1 is provided with a liquid storage tank 9, and a circulating pump 10 is installed on the liquid storage tank 9. The inlet end of the circulating pump 10 is connected to the liquid storage tank 9 through a pipeline, and the outlet end of the circulating pump 10 is connected to a liquid infusion pipe 11. One interface of the liquid infusion pipe 11 is connected to the row tube distributor 7, and the other interface of the liquid infusion pipe 11 is connected to the overflow trough distributor 4. The lower part of the tower body 1 is provided with an air inlet 12, and the top thereof is provided with an air outlet 13.

[0019] Specifically, observation windows 14 are arranged on the side walls of the tower body 1 , and the observation windows 14 are evenly distributed on the tower body 1 .

[0020] In this embodiment, the observation window 14 is convenient for real-time observation of the working conditions in the absorption tower, such as the state of the filler, the liquid circulation conditions, etc. At the same time, the filler can also be replaced and repaired through the window.

[0021] Specifically, the air inlet 12 is located below the carbon steel gas jet type packing support plate 2 , the lower grid packing layer 3 is located on the carbon steel gas jet type packing support plate 2 , and the overflow trough distributor 4 is located above the lower grid packing layer 3 .

[0022] In this embodiment, the carbon steel gas jet filler support plate 2 is referred to as a stainless steel hump support plate, which is mainly made of metal 304, 316L and other stainless steel materials through shearing machine shearing, punching press and other processes. It is an excellent bulk filler support device. The overflow trough distributor 4 is usually composed of a diversion trough (also called a main trough or a primary trough) and a distribution trough (also called a secondary trough or a secondary trough). The primary trough initially divides the liquid into several streams through the holes in the bottom of the trough, and adds them to the liquid distribution trough below it respectively. The bottom (or trough wall) of the distribution trough is provided with channels (or conduits) to evenly distribute the liquid on the filler layer.

[0023] Specifically, the upper grid packing layer 6 is located on the grid plate packing support plate 5 , and the row pipe distributor 7 is located above the upper grid packing layer 6 .

[0024] In this embodiment, the grid-type packing support plate 5 is an accessory used to support the weight of the packing in the tower and the liquid it holds, and to allow the gas and liquid to pass smoothly. The row-tube distributor 7 is for the initial distribution of the liquid, which can make the liquid evenly distributed in the packed tower and increase the wetted surface area of ​​the packing to improve the separation effect.

[0025] Specifically, the liquid storage tank 9 is connected to the tower body 1, and a filter screen 15 is arranged between the two.

[0026] In this embodiment, the spray liquid at the bottom of the tower is filtered through the filter screen 15 and then flows into the liquid storage tank 9 for storage.

[0027] Specifically, a liquid level meter 16 is installed on the liquid storage tank 9 , and a solenoid valve 17 is provided between the liquid infusion tube 11 and the circulation pump 10 .

[0028] In this embodiment, the liquid level meter 16 is used to monitor the liquid level in the liquid storage tank 9 in real time. The main function of the solenoid valve 17 is to control the flow and stop of the fluid medium in the pipeline or equipment, and it can also control the liquid flow rate.

[0029] When in use, the carbon steel gas injection type packing support plate 2 arranged in the lower layer has excellent fluid mechanics properties, the gas-liquid flow channels are separated, the gas is fed in from the bottom of the tower, and the gas phase is sprayed to the packing layer through the side openings on the support plate. The gas phase is evenly distributed, and the overflow trough distributor 4 arranged above the lower grid packing layer 3 has the dual effects of collection and redistribution, which can effectively redistribute the liquid and reduce the effective tower height. The gas-liquid distribution is even, the spray point density is large, and the pressure drop of the distributor is low, which can ensure that the packing surface is fully wetted.

[0030] In summary, the ammonium sulfide absorption tower, the carbon steel gas injection type packing support plate 2 arranged in the lower layer has excellent fluid mechanics properties, the gas-liquid flow channels are separated, the gas is fed into the tower from the bottom, and the gas phase is sprayed to the packing layer through the side openings on the support plate. The gas phase is evenly distributed, and the overflow trough distributor 4 arranged above the lower grid packing layer 3 has the dual effects of collection and redistribution, can effectively redistribute the liquid, and can reduce the effective tower height. The gas-liquid distribution is even, the spray point density is large, and the pressure drop of the distributor is low, which can ensure that the packing surface is fully wetted.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonium sulfide absorption tower, comprising a tower body (1), characterized in that: The tower body (1) is provided with a carbon steel gas jet packing support plate (2), a lower grid packing layer (3), an overflow trough distributor (4), a grid packing support plate (5), an upper grid packing layer (6), a pipe-type distributor (7) and a demister (8) in sequence from bottom to top. A liquid storage tank (9) is provided at the bottom end of the tower body (1), and a circulating pump (10) is installed on the liquid storage tank (9). The inlet end of the circulating pump (10) is connected to the liquid storage tank (9) through a pipeline, and the outlet end of the circulating pump (10) is connected to a liquid delivery pipe (11). One interface of the liquid delivery pipe (11) is connected to the pipe-type distributor (7), and the other interface of the liquid delivery pipe (11) is connected to the overflow trough distributor (4). The lower part of the tower body (1) is provided with an air inlet (12), and the top thereof is provided with an air outlet (13).

2. An ammonium sulfide absorption tower according to claim 1, characterized in that: Observation windows (14) are arranged on the side walls of the tower body (1), and the observation windows (14) are evenly distributed on the tower body (1).

3. An ammonium sulfide absorption tower according to claim 1, characterized in that: The air inlet (12) is located below the carbon steel gas jet packing support plate (2), the lower grid packing layer (3) is located on the carbon steel gas jet packing support plate (2), and the overflow trough distributor (4) is located above the lower grid packing layer (3).

4. An ammonium sulfide absorption tower according to claim 1, characterized in that: The upper grid packing layer (6) is located on the grid packing support plate (5), and the row pipe distributor (7) is located above the upper grid packing layer (6).

5. An ammonium sulfide absorption tower according to claim 1, characterized in that: The liquid storage tank (9) and the tower body (1) are interconnected, and a filter screen (15) is disposed between the two.

6. An ammonium sulfide absorption tower according to claim 1, characterized in that: A liquid level meter (16) is installed on the liquid storage tank (9), and an electromagnetic valve (17) is provided between the liquid delivery pipe (11) and the circulation pump (10).

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