Conversion wet acid gas treatment device

Abstract

The utility model relates to the technical field of wet acid gas treatment, in particular to a conversion wet acid gas treatment device which comprises a rotational flow preprocessor and an absorption tower, the rotational flow preprocessor is located on the left side of the absorption tower, and the inner wall face of the rotational flow preprocessor is fixedly connected with a rotational flow treatment assembly. The right end of the gas conveying pipe is fixedly connected with the lower part of the outer surface of the absorption tower in a penetrating manner, the lower part of the inner wall surface of the absorption tower is fixedly connected with an absorption assembly, and the middle part of the lower end of the absorption tower is fixedly connected with an absorption liquid circulating assembly in a penetrating manner; the left part of the upper end of the absorption tower is fixedly connected with a tail gas filtering assembly. According to the conversion wet acid gas treatment device disclosed by the utility model, the absorption assembly in the absorption tower and the spraying assembly in the absorption liquid circulating assembly realize a multi-link and multi-layer absorption process, so that the removal rate of harmful components in wet acid gas is greatly improved, and the purified gas is ensured to be discharged after reaching the standard.

Description

Technical Field

[0001] This utility model relates to the field of wet acid gas treatment technology, and in particular to a wet acid gas conversion treatment device. Background Technology

[0002] In many fields such as coal chemical production, a large amount of wet acid gas is generated. However, traditional wet acid gas conversion treatment devices are difficult to separate the acidic waste liquid. The acidic waste liquid directly enters the subsequent treatment stage, which can easily lead to accelerated equipment corrosion, reduce equipment lifespan, and affect the treatment effect. In addition, the absorption efficiency of the wet acid gas conversion treatment device in the gas absorption and purification stage is not high, and a large amount of absorbent is required. This not only wastes the absorbent and increases production costs, but also makes it difficult to achieve deep removal of harmful components in the wet acid gas. Therefore, we have introduced a wet acid gas conversion treatment device. Utility Model Content

[0003] The main objective of this invention is to provide a device for treating wet acid gas, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A wet acid gas treatment device includes a cyclone preprocessor and an absorption tower. The cyclone preprocessor is located on the left side of the absorption tower. A cyclone treatment component is fixedly connected to the inner wall of the cyclone preprocessor. A wet acid gas inlet pipe is inserted and fixedly connected to the middle of the upper end of the cyclone preprocessor. A first solenoid valve is movably installed on the lower part of the outer surface of the wet acid gas inlet pipe. A drain pipe is inserted and fixedly connected to the middle of the lower end of the cyclone preprocessor. A gas supply pipe is inserted and fixedly connected to the middle of the outer surface of the cyclone preprocessor, and the right end of the gas supply pipe is inserted and fixedly connected to the lower part of the outer surface of the absorption tower. An absorption component is fixedly connected to the lower part of the inner wall of the absorption tower. An absorbent circulation component is inserted and fixedly connected to the middle of the lower end of the absorption tower. A tail gas filter component is inserted and fixedly connected to the left side of the upper end of the absorption tower.

[0006] The absorbent circulation assembly includes an absorbent circulation pump. A first circulation pipe is fixedly installed at the rear end of the absorbent circulation pump. A filter is fixedly connected to the front of the upper end of the first circulation pipe. An absorbent outlet pipe is fixedly connected to the upper end of the filter. A second circulation pipe is fixedly installed on the outer surface of the absorbent circulation pump. An absorbent replenishment pipe is fixedly connected to the upper part of the outer surface of the second circulation pipe. A second solenoid valve is movably installed on the lower part of the outer surface of the absorbent replenishment pipe. A fluid regulating valve is movably installed on the front of the outer surface of the second circulation pipe. A spray assembly is fixedly connected to the front of the lower end of the second circulation pipe.

[0007] Preferably, the upper end of the absorbent outlet pipe is inserted and fixedly connected to the lower end of the absorption tower, and the lower front part of the second circulation pipe is inserted and fixedly connected to the upper end of the absorption tower.

[0008] By adopting the above technical solution—fixed connection between the absorbent outlet pipe and the lower end of the absorption tower, and fixed connection between the second circulation pipe and the upper end of the absorption tower—a smooth and efficient absorbent circulation path is constructed.

[0009] Preferably, the spray assembly includes an absorbent fixing tube, four absorbent diversion tubes are fixedly connected to the outer surface of the absorbent fixing tube, several fixing rods are fixedly connected to the outer sides of the outer surfaces of the four absorbent diversion tubes, several absorbent atomizing nozzles are fixedly installed to the inner sides of the outer surfaces of the four absorbent diversion tubes, and the upper end of the absorbent fixing tube is fixedly connected to the lower front part of the second circulation tube.

[0010] By adopting the above technical solution, several absorbent atomizing nozzles installed inside the absorbent diversion pipe can atomize the absorbent into fine droplets. Compared with ordinary spraying methods, the atomized absorbent droplets have a larger specific surface area, which can significantly increase the contact area with the wet acid gas. When the wet acid gas rises in the absorption tower, it mixes thoroughly with these atomized droplets, and the reaction rate between gas and liquid is greatly improved. This not only accelerates the absorption rate of acidic components in the wet acid gas, but also removes harmful gases more thoroughly, improves absorption efficiency, and enables the purified gas to better meet environmental protection requirements.

[0011] Preferably, the ends of the fixed rods away from the center of the absorbent fixed pipe are all fixedly connected to the inner wall of the absorption tower, the four absorbent diversion pipes are arranged in a ring array around the center of the absorbent fixed pipe, and the several absorbent atomizing nozzles are distributed in pairs at equal distances.

[0012] By adopting the above technical solution, the absorbent distribution pipes are arranged in a ring array around the center of the absorbent fixed pipe, so that the absorbent is evenly dispersed into the internal space of the absorption tower from multiple directions. Combined with the absorbent atomizing nozzles distributed at equal intervals, it can be ensured that the absorbent has a nearly uniform spray intensity on all horizontal sections in the absorption tower. Whether it is wet acid gas near the inner wall area of ​​the absorption tower or in the center area of ​​the tower, it can come into contact with the absorbent with the same probability, avoiding local insufficient absorption or over-absorption. This greatly improves the uniformity of the absorbent coverage in the absorption tower and comprehensively enhances the absorption and treatment effect of wet acid gas.

[0013] Preferably, the swirl treatment assembly includes a connecting column, a spiral guide plate is fixedly connected to the outer surface of the connecting column, the upper end face of the connecting column is set with a rounded corner, and the outer surface of the spiral guide plate is fixedly connected to the inner wall surface of the swirl pre-processor.

[0014] By adopting the above technical solution: a spiral guide plate fixed outside the connecting column guides the gas to form a vortex when wet acid gas enters the vortex pre-processor. During the vortex process, the acid gas waste liquid is separated by centrifugal force and discharged through the drain pipe, reducing the burden of subsequent treatment and improving the overall treatment efficiency.

[0015] Preferably, the absorption assembly includes an absorption frame, the lower end of which has several through holes, the upper end of which has several through holes, the middle part of which has a first fixing frame, the first fixing frame being filled with a regular absorption filler, and the outer surface of the absorption frame being fixedly connected to the inner wall of the absorption tower.

[0016] By adopting the above technical solution, the structured absorbent filling material (the structured absorbent filling material is a mixture of polypropylene perforated corrugated structured filler and ceramic rectangular saddle ring structured filler) filling the first fixed frame has good adsorption and reaction performance for acidic substances in wet acid gas. Due to its structured structure, the gas can form a stable and orderly airflow channel when passing through, so that the contact between the absorbent liquid and the gas is more complete and the reaction is more thorough.

[0017] Preferably, the plurality of lower through holes and the plurality of upper through holes are distributed in a central ring array around the absorption frame.

[0018] By adopting the above technical solution, both the lower and upper through holes are distributed in a circular array around the center of the absorption frame, so that when the gas enters the absorption frame, it can rise evenly from multiple angles and cover the internal space of the absorption frame in all directions. The uniform gas flow means that the regular absorption packing absorbs the gas more evenly.

[0019] Preferably, the exhaust gas filtration assembly includes an exhaust gas treatment frame, a second fixing frame is fixedly connected to the middle of the inner wall of the exhaust gas treatment frame, an activated carbon adsorption layer is fixedly filled in the second fixing frame, a sealing cover is movably sleeved on the upper end of the exhaust gas treatment frame, an exhaust gas outlet pipe is inserted and fixedly connected to the middle of the lower end of the exhaust gas treatment frame, an exhaust gas exhaust pipe is inserted and fixedly connected to the upper surface of the outer surface of the exhaust gas treatment frame, and the lower end of the exhaust gas outlet pipe is inserted and fixedly connected to the upper end of the absorption tower.

[0020] By adopting the above technical solution: after the exhaust gas enters the exhaust gas treatment frame from the exhaust gas outlet pipe, the pollutants are firmly adsorbed by the activated carbon adsorption layer during the process of passing through the activated carbon adsorption layer (the activated carbon adsorption layer is composed of a mixture of coconut shell activated carbon and coal-based columnar activated carbon. The coconut shell activated carbon has a highly developed microporous structure, a large specific surface area, and a strong adsorption capacity, which can efficiently adsorb a variety of organic pollutants in the exhaust gas. The coal-based columnar activated carbon has high mechanical strength and can maintain structural stability during the continuous passage of exhaust gas, making it less prone to breakage and ensuring the long-term stable operation of the activated carbon adsorption layer. Its pore size distribution is relatively uniform, and the mesopores are relatively well-developed, which is conducive to the diffusion and adsorption of large molecular pollutants inside the activated carbon. For some large particulate impurities and some organic pollutants with high boiling points in the exhaust gas, the coal-based columnar activated carbon can play a good adsorption role). The purified gas is discharged from the exhaust pipe, which significantly improves the purification level of the exhaust gas, ensures that the emitted gas meets strict environmental protection standards, and reduces the risk of environmental pollution.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In this invention, the absorption component inside the absorption tower utilizes the lower through-hole at the bottom and the upper through-hole at the top of the absorption frame, along with the regular absorption packing in the first fixed frame, to perform preliminary absorption treatment on the incoming gas. Simultaneously, the spray component in the absorption liquid circulation assembly sprays the absorption liquid evenly and finely through the absorption liquid fixed pipe, four absorption liquid distribution pipes, and the absorption liquid atomizing nozzles above, further absorbing and purifying the gas in the upper part of the absorption tower. This multi-stage and multi-level absorption process greatly improves the removal rate of harmful components in wet acid gas, ensuring that the purified gas meets emission standards.

[0023] In this invention, the absorbent circulation component enables the recycling of the absorbent. The purified liquid flows out through the absorbent outlet pipe, is filtered by the filter, pressurized by the absorbent circulation pump, and returns to the top of the absorption tower for reuse through the first and second circulation pipes. This not only reduces the consumption of absorbent and lowers production costs, but also avoids the environmental pollution caused by the discharge of large amounts of absorbent. During the circulation process, the fluid regulating valve can flexibly adjust the absorbent flow rate and control it according to the actual working conditions.

[0024] In this invention, the wet acid gas is swirled by the spiral guide plate on the outer surface of the connecting column through the swirling treatment component in the swirling preprocessor. This swirling method can quickly and effectively separate the acid gas waste liquid and discharge it through the drain pipe, reducing the burden of subsequent treatment, improving the overall treatment efficiency, and the structure is simple, the separation effect is good, and there is no need for complicated operation and high energy consumption.

[0025] In this invention, a second fixed frame is provided inside the exhaust gas treatment frame of the exhaust gas filter assembly, which is filled with an activated carbon adsorption layer to perform a second adsorption treatment on the purified exhaust gas. This effectively removes residual impurities in the exhaust gas, such as hydrogen sulfide and organic sulfur that have not been completely absorbed, further reducing the concentration of exhaust gas pollutants, ensuring that the exhaust gas emissions meet environmental protection standards, and reducing the impact on the atmospheric environment. Attached Figure Description

[0026] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0027] Figure 1 This is a schematic diagram of the overall structure of a wet acid gas treatment device according to the present invention;

[0028] Figure 2 This is a cross-sectional view of the structure of a wet acid gas treatment device according to the present invention (in which the cyclone pre-processor, absorption tower, absorption assembly and tail gas filtration assembly are cut out).

[0029] Figure 3 This is a schematic diagram of the cyclone treatment component of a wet acid gas treatment device according to the present invention (the cyclone preprocessor is cut out).

[0030] Figure 4 This is a cross-sectional view of the absorption assembly of a wet acid gas treatment device according to the present invention (the absorption frame is cut out).

[0031] Figure 5 This is a schematic diagram of the absorbent circulation component of a wet acid gas treatment device according to the present invention;

[0032] Figure 6 This is a schematic diagram of the spray absorption component of a wet acid gas treatment device according to the present invention;

[0033] Figure 7 This is an exploded view of the tail gas filter assembly of a wet acid gas treatment device according to the present invention.

[0034] In the diagram: 1. Cyclone pre-processor; 2. Absorber tower; 3. Cyclone treatment assembly; 4. Absorption assembly; 5. Absorbent liquid circulation assembly; 6. Tail gas filtration assembly; 7. Wet acid gas inlet pipe; 8. First solenoid valve; 9. Drain pipe; 10. Gas delivery pipe; 31. Connecting column; 32. Spiral guide plate; 33. Rounded corner edge; 41. Absorption frame; 42. Lower through hole; 43. Upper through hole; 44. First fixed frame; 45. Structured absorption packing; 51. Absorbent liquid circulation pump; 52. First 53. Circulation pipe; 54. Filter; 55. Absorbent liquid outlet pipe; 56. Second circulation pipe; 57. Absorbent liquid replenishment pipe; 58. Second solenoid valve; 59. Fluid regulating valve; 50. Spray assembly; 51. Absorbent liquid fixing pipe; 52. Absorbent liquid diversion pipe; 593. Fixing rod; 594. Absorbent liquid atomizing nozzle; 61. Exhaust gas treatment frame; 62. Second fixing frame; 63. Activated carbon adsorption layer; 64. Sealing cap; 65. Exhaust gas outlet pipe; 66. Exhaust gas exhaust pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0037] Example 1

[0038] A wet acid gas treatment device includes a cyclone pre-processor 1 and an absorption tower 2. The cyclone pre-processor 1 is located on the left side of the absorption tower 2. A cyclone treatment component 3 is fixedly connected to the inner wall of the cyclone pre-processor 1. A wet acid gas inlet pipe 7 is inserted and fixedly connected to the middle of the upper end of the cyclone pre-processor 1. A first solenoid valve 8 is movably installed on the lower part of the outer surface of the wet acid gas inlet pipe 7. A drain pipe 9 is inserted and fixedly connected to the middle of the lower end of the cyclone pre-processor 1. A gas supply pipe 10 is inserted and fixedly connected to the middle of the outer surface of the cyclone pre-processor 1, and the right end of the gas supply pipe 10 is inserted and fixedly connected to the lower part of the outer surface of the absorption tower 2. An absorption component 4 is fixedly connected to the lower part of the inner wall of the absorption tower 2. An absorbent liquid circulation component 5 is inserted and fixedly connected to the middle of the lower end of the absorption tower 2. A tail gas filter component 6 is inserted and fixedly connected to the left side of the upper end of the absorption tower 2.

[0039] In this embodiment, the absorbent circulation assembly 5 includes an absorbent circulation pump 51. A first circulation pipe 52 is fixedly installed at the rear end of the absorbent circulation pump 51. A filter 53 is fixedly connected to the front of the upper end of the first circulation pipe 52. An absorbent outlet pipe 54 is fixedly connected to the upper end of the filter 53. A second circulation pipe 55 is fixedly installed on the outer surface of the absorbent circulation pump 51. An absorbent replenishment pipe 56 is fixedly connected to the upper part of the outer surface of the second circulation pipe 55. A second solenoid valve 57 is movably installed on the lower part of the outer surface of the absorbent replenishment pipe 56. A fluid regulating valve 58 is movably installed on the front of the outer surface of the second circulation pipe 55. A spray assembly 59 is fixedly connected to the front of the lower end of the second circulation pipe 55. The upper end of the liquid outlet pipe 54 is inserted and fixedly connected to the lower end of the absorption tower 2, and the front part of the lower end of the second circulation pipe 55 is inserted and fixedly connected to the upper end of the absorption tower 2; the spray assembly 59 includes an absorbent fixed pipe 591, four absorbent diversion pipes 592 are inserted and fixedly connected to the outer surface of the absorbent fixed pipe 591, several fixing rods 593 are fixedly connected to the outer side of the outer surface of each of the four absorbent diversion pipes 592, several absorbent atomizing nozzles 594 are inserted and fixedly installed on the inner side of the outer surface of each of the four absorbent diversion pipes 592, the upper end of the absorbent fixed pipe 591 is inserted and fixedly connected to the front part of the lower end of the second circulation pipe 55; the ends of the several fixing rods 593 away from the center of the absorbent fixed pipe 591 are all connected to the absorption tower 2. The inner wall of the cyclone pre-processor 1 is fixedly connected to the cyclone pre-processor 1. Four absorbent diversion pipes 592 are arranged in a ring array around the center of the absorbent fixed pipe 591, and several absorbent atomizing nozzles 594 are arranged in pairs at equal distances. The cyclone pre-processor 1 includes a connecting column 31, and a spiral guide plate 32 is fixedly connected to the outer surface of the connecting column 31. The upper end face of the connecting column 31 is set as a rounded corner edge 33. The outer surface of the spiral guide plate 32 is fixedly connected to the inner wall of the cyclone pre-processor 1. The absorption component 4 includes an absorption frame 41. The lower end of the absorption frame 41 has several through holes 42, and the upper end of the absorption frame 41 has several through holes 43. A first fixed frame 44 is fixedly connected to the middle of the inner wall of the absorption frame 41. The inner part is filled with a regular absorbent packing 45, and the outer surface of the absorber frame 41 is fixedly connected to the inner wall of the absorber tower 2. Several lower through holes 42 and several upper through holes 43 are arranged in a circular array around the center of the absorber frame 41. The exhaust gas filter assembly 6 includes an exhaust gas treatment frame 61. A second fixed frame 62 is fixedly connected to the middle of the inner wall of the exhaust gas treatment frame 61. The second fixed frame 62 is filled with an activated carbon adsorption layer 63. A sealing cover 64 is movably sleeved on the upper end of the exhaust gas treatment frame 61. An exhaust gas outlet pipe 65 is inserted and fixedly connected to the middle of the lower end of the exhaust gas treatment frame 61. An exhaust gas exhaust pipe 66 is inserted and fixedly connected to the upper part of the outer surface of the exhaust gas treatment frame 61. The lower end of the exhaust gas outlet pipe 65 is inserted and fixedly connected to the upper end of the absorber tower 2.

[0040] It should be noted that this utility model is a wet acid gas treatment device. During use, the wet acid gas inlet pipe 7 is connected to the wet acid gas source equipment. In the wet acid gas source equipment, the wet acid gas to boiler co-firing pipeline splits into two after the power boundary valve, and enters the furnace from opposite corners of the boiler through spray guns. During this process, to ensure complete combustion of the wet acid gas in the furnace, a vortex is formed in the negative pressure zone within the furnace. Furthermore, each wet acid gas spray gun is equipped with a flame arrestor to prevent backfire under abnormal conditions, thereby ensuring the safe operation of the boiler. Simultaneously, the wet acid gas source equipment is also equipped with an interlocking pressure; when the pressure exceeds or falls below the set range... The system will automatically take corresponding measures to adjust the delivery volume of wet acid gas or close relevant valves to ensure the stability and safety of the entire co-firing process. After the wet acid gas is pre-treated by the wet acid gas source equipment, the first solenoid valve 8 is opened. The pre-treated wet acid gas enters the cyclone pre-processor 1 through the wet acid gas inlet pipe 7 and is swirled by the spiral guide plate 32 on the outer surface of the connecting column 31. The separated acid waste liquid is discharged through the drain pipe 9 to the acid waste liquid collection tank. The gas in the liquid enters the lower part of the absorption tower 2 through the gas delivery pipe 10. The gas enters the lower part of the absorption frame 41 through the lower through hole 42 at the lower end of the absorption frame 41 of the absorption component 4. Inside the first fixed frame 44, the gas undergoes preliminary absorption treatment through the structured absorption packing 45. Then, it enters the upper part of the absorption tower 2 through the upper through-hole 43 at the top of the absorption frame 41. Simultaneously, the second solenoid valve 57 is opened, and absorbent liquid is obtained from the absorbent liquid replenishment tank through the absorbent liquid replenishment pipe 56. The absorbent liquid sequentially passes through the second circulation pipe 55 and the absorbent liquid fixed pipe 591 into four absorbent liquid distribution pipes 592, and is then sprayed out by several absorbent liquid atomizing nozzles 594 on the absorbent liquid distribution pipes 592, further absorbing and purifying the gas in the upper part of the absorption tower 2. The purified liquid, after absorbing the gas, permeates into the lower part of the absorption tower 2 through the absorption assembly 4. The purified liquid in the lower part of the absorber flows out through the absorbent outlet pipe 54, is filtered by the filter 53, is pressurized by the absorbent circulation pump 51, and then circulates back to the upper part of the absorber tower 2 through the first circulation pipe 52 and the second circulation pipe 55. The gas is absorbed again by the spray assembly 59, realizing the recycling of the absorbent liquid. During the circulation process, the flow rate of the absorbent liquid can be adjusted by the fluid regulating valve 58. The exhaust gas after absorption and purification enters the exhaust gas treatment frame 61 through the exhaust gas outlet pipe 65. In the exhaust gas treatment frame 61, the exhaust gas is adsorbed by the activated carbon adsorption layer 63 in the second fixed frame 62 to remove residual impurities, and then discharged through the exhaust gas exhaust pipe 66.

[0041] In the embodiments provided in this application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules or units, and may be electrical, mechanical, or other forms.

[0042] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A conversion wet acid gas treatment plant comprising a cyclonic pre- treater (1) and an absorption column (2), characterized in that: The cyclone pretreater (1) is located on the left side of the absorption tower (2), the inner wall surface of the cyclone pretreater (1) is fixedly connected with a cyclone treatment assembly (3), the middle part of the upper end of the cyclone pretreater (1) is fixedly connected with a wet acid gas inlet pipe (7), the outer surface of the lower part of the wet acid gas inlet pipe (7) is movably provided with a first electromagnetic valve (8), the middle part of the lower end of the cyclone pretreater (1) is fixedly connected with a liquid discharge pipe (9), the middle part of the outer surface of the cyclone pretreater (1) is fixedly connected with a gas conveying pipe (10), and the right end of the gas conveying pipe (10) is fixedly connected with the outer surface of the lower part of the absorption tower (2), the lower part of the inner wall surface of the absorption tower (2) is fixedly connected with an absorption assembly (4), the middle part of the lower end of the absorption tower (2) is fixedly connected with an absorption liquid circulating assembly (5), and the left part of the upper end of the absorption tower (2) is fixedly connected with a tail gas filtering assembly (6). The absorption liquid circulating assembly (5) comprises an absorption liquid circulating pump (51), the rear end of the absorption liquid circulating pump (51) is fixedly provided with a first circulating pipe (52), the upper end of the front part of the first circulating pipe (52) is fixedly connected with a filter (53), the upper end of the filter (53) is fixedly connected with an absorption liquid outlet pipe (54), the outer surface of the absorption liquid circulating pump (51) is fixedly provided with a second circulating pipe (55), the outer surface of the upper part of the second circulating pipe (55) is fixedly connected with an absorption liquid supplement pipe (56), the outer surface of the lower part of the absorption liquid supplement pipe (56) is movably provided with a second electromagnetic valve (57), the outer surface of the front part of the second circulating pipe (55) is movably provided with a fluid regulating valve (58), and the lower end of the front part of the second circulating pipe (55) is fixedly connected with a spraying assembly (59).

2. A wet acid gas conversion unit according to claim 1, wherein: The upper end of the absorption liquid outlet pipe (54) is fixedly connected with the lower end of the absorption tower (2), and the lower end of the front part of the second circulating pipe (55) is fixedly connected with the upper end of the absorption tower (2).

3. A wet acid gas conversion unit according to claim 1 wherein: The spraying assembly (59) comprises an absorption liquid fixed pipe (591), the outer surface of the absorption liquid fixed pipe (591) is fixedly connected with four absorption liquid branch pipes (592), the outer surface of each of the four absorption liquid branch pipes (592) is fixedly connected with a plurality of fixed rods (593), the inner surface of each of the four absorption liquid branch pipes (592) is fixedly provided with a plurality of absorption liquid atomizing nozzles (594), and the upper end of the absorption liquid fixed pipe (591) is fixedly connected with the lower end of the front part of the second circulating pipe (55).

4. A wet acid gas conversion unit according to claim 3 wherein: The ends, away from the center of the absorption liquid fixed pipe (591), of the plurality of fixed rods (593) are fixedly connected with the inner wall surface of the absorption tower (2), the four absorption liquid branch pipes (592) are arranged in a circular array around the center of the absorption liquid fixed pipe (591), and the plurality of absorption liquid atomizing nozzles (594) are arranged at equal distances two by two.

5. A wet acid gas conversion unit according to claim 1 wherein: The cyclone treatment assembly (3) comprises a connecting column (31), the outer surface of the connecting column (31) is fixedly connected with a spiral guide plate (32), the upper end surface of the connecting column (31) is provided with a round corner (33), and the outer surface of the spiral guide plate (32) is fixedly connected with the inner wall surface of the cyclone pretreater (1).

6. A wet acid gas conversion unit according to claim 1 wherein: The absorption assembly (4) comprises an absorption frame (41), a plurality of lower through holes (42) penetrating in and out are formed in the lower end of the absorption frame (41), a plurality of upper through holes (43) penetrating in and out are formed in the upper end of the absorption frame (41), the inner wall surface of the middle part of the absorption frame (41) is fixedly connected with a first fixed frame (44), the first fixed frame (44) is fixedly filled with a regular absorption filler (45) in the inside, and the outer surface of the absorption frame (41) is fixedly connected with the inner wall surface of the absorption tower (2).

7. A sour gas treatment plant of the swing wet type according to claim 6, characterized in that: The plurality of lower through holes (42) and the plurality of upper through holes (43) are arranged in a central annular array of the absorption frame (41).

8. A wet acid gas conversion unit according to claim 1 wherein: The tail gas filtering assembly (6) comprises a tail gas treatment frame (61), the inner wall surface of the middle part of the tail gas treatment frame (61) is fixedly connected with a second fixed frame (62), the second fixed frame (62) is fixedly filled with an activated carbon adsorption layer (63) in the inside, a sealing cover (64) is movably sleeved on the upper end of the tail gas treatment frame (61), a tail gas outlet pipe (65) is fixedly connected with the middle part of the lower end of the tail gas treatment frame (61), a tail gas exhaust pipe (66) is fixedly connected with the outer surface of the upper part of the tail gas treatment frame (61), and the lower end of the tail gas outlet pipe (65) is fixedly connected with the upper end of the absorption tower (2).

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