CN217887494U - Sour gas absorption system - Google Patents

Abstract

The utility model provides a sour gas absorption system, including first sour gas absorption tower and first pipeline, the first end of first pipeline is used for being linked together with reaction unit to let in the acid gas who generates, first sour gas absorption tower has first absorption cavity, first opening and second opening, first absorption cavity is including the first cavity and the second cavity that are linked together, first cavity is through the second end intercommunication of first opening and first pipeline; the second cavity is used for containing circulating water; the acid gas absorption system further comprises: and the first end of the first connecting pipe is communicated with the second cavity through the second opening, the second end of the first connecting pipe is communicated with the first pipeline, and the second end of the first connecting pipe is positioned between the first end and the second end of the first pipeline. The utility model discloses an acid gas absorption system has solved the problem that the dust that draws the alumina reaction to produce blockked up the pipeline among the prior art.

Description

Sour gas absorption system

Technical Field

The utility model relates to a solid waste utilization technology field particularly, relates to an acid gas absorption system.

Background

In the process technology for extracting alumina, a one-step acid dissolution method is generally adopted for processing, wherein the one-step acid dissolution method is to perform acid dissolution, impurity removal and crystallization on high-alumina fly ash to generate crystalline aluminum chloride, and the crystalline aluminum chloride is pyrolyzed at low temperature to generate amorphous alumina. The low-temperature pyrolysis of the crystalline aluminum chloride is a core unit of the whole process, and the main weight loss temperature range of the crystalline aluminum chloride in the thermal decomposition process is 90-350 ℃, and the weight loss is about 70wt%. The weight loss process shows that the crystalline aluminum chloride is decomposed, and gas products are generated in the decomposition process. Thereafter, there is a change in mass throughout the temperature range of 350-1000 ℃, but the change in mass becomes smaller and smaller as the temperature gradually increases. The general equation for the decomposition reaction of crystalline aluminum chloride is: 2AlCl3.6H2O → Al2O3+9H2O ═ 6HCl ℃.

At present, the prior art adopts a circulating fluidized bed to directly contact and react with crystalline aluminum chloride at the temperature of 350-400 ℃. Reaction process can produce the dust granule that a large amount of high temperature flue gases smugglied secretly, most dust granule is absorbed in the back-falling fluidized bed by the sack cleaner, the fine dust of minority enters into sour absorption system behind the sack cleaner along with high temperature flue gas, the high temperature flue gas of smuggleing the dust secretly contains the vapor of certain proportion, lead to the dust to adsorb at the pipe wall after the condensation in the pipeline, it diminishes gradually to the pipeline cross-section of sour absorption system to accumulate to make the fluidized bed, and then the volume of induced drafting that influences sour absorption system, it is not good to lead to sour absorption system's whole effect.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an acid gas absorption system to solve the problem that the dust that draws the alumina reaction among the prior art to produce blocks up the pipeline.

In order to achieve the above object, the utility model provides an acid gas absorption system, including first acid gas absorption tower and first pipeline, the first end of first pipeline is used for being linked together with reaction unit to let in the acid gas that generates, first acid gas absorption tower has first absorption cavity, first opening and second opening, first absorption cavity is including the first cavity and the second cavity that are linked together, first cavity is through the second end intercommunication of first opening and first pipeline; the second cavity is used for containing circulating water; the acid gas absorption system further comprises: and the first end of the first connecting pipe is communicated with the second cavity through the second opening, the second end of the first connecting pipe is communicated with the first pipeline, and the second end of the first connecting pipe is positioned between the first end and the second end of the first pipeline.

Further, the acid gas absorption system further comprises: the inlet of the first pump body is communicated with the second opening, and the outlet of the first pump body is communicated with the first end of the first connecting pipe.

Further, the first pipeline is arranged obliquely relative to the horizontal plane, and the first end of the first pipeline is higher than the second end of the first pipeline.

Further, the first pipe has a communication hole in a pipe wall thereof, and the second end of the first connection pipe is disposed inside the pipe of the first pipe through the communication hole.

Further, the end face of the second end of the first connecting pipe is disposed obliquely with respect to the center line of the second end of the first connecting pipe.

Furthermore, the first acid gas absorption tower is also provided with a third opening and a fourth opening, the third opening is communicated with the second cavity, the fourth opening is communicated with the first cavity, and the fourth opening is positioned at the top of the first acid gas absorption tower; the acid gas absorption system further comprises: the inlet of the second pump body is communicated with the second cavity through the third opening; and the first end of the second connecting pipe is communicated with the outlet of the second pump body, and the second end of the second connecting pipe is communicated with the first cavity through the fourth opening.

Further, the second end of the second connecting pipe passes through the fourth opening and is arranged in the first cavity; the acid gas absorption system further comprises: and the first spraying device is communicated with the second end of the second connecting pipe.

Further, the first acid gas absorption tower also comprises a fifth opening communicated with the first cavity; the acid gas absorption system further comprises: the second acid gas absorption tower is provided with a second absorption cavity, the second absorption cavity comprises a third cavity and a fourth cavity, and the fourth cavity is used for containing circulating water; the second acid gas absorption tower is also provided with a sixth opening communicated with the third cavity; and the first end of the second pipeline is communicated with the first cavity through the fifth opening, and the second end of the second pipeline is communicated with the sixth opening.

Furthermore, the second acid gas absorption tower is also provided with a seventh opening and an eighth opening, the seventh opening is communicated with the fourth cavity, the eighth opening is communicated with the third cavity, and the eighth opening is positioned at the top of the second acid gas absorption tower; the acid gas absorption system further comprises: an inlet of the third pump body is communicated with the third cavity through an eighth opening; and the first end of the third connecting pipe is communicated with the outlet of the third pump body, and the second end of the third connecting pipe is communicated with the fourth cavity through the seventh opening.

Further, the acid gas absorption system further comprises: one end of the third pipeline is communicated with the third cavity; and the fan is arranged on the third pipeline.

The acid gas absorption system of the utility model comprises a first acid gas absorption tower and a first pipeline, wherein the first end of the first pipeline is communicated with a reaction device, and acid gas with dust generated in the reaction device enters the first pipeline from the first end of the first pipeline; the first acid gas absorption tower is provided with a first absorption cavity, a first opening and a second opening, the first absorption cavity comprises a first cavity and a second cavity which are communicated with each other, the first cavity is communicated with the second end of a first pipeline through the first opening, acid gas with dust reaches the second end of the first pipeline through the first pipeline, and then enters the first cavity of the first acid gas absorption tower through the first opening. In addition, the circulating water in the second cavity is input into the first pipeline through the first connecting pipe, so that the effects of absorbing acid gas and reducing the temperature of the acid gas can be achieved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic diagram of an embodiment of an acid gas absorption system according to the present invention.

Wherein the figures include the following reference numerals:

10. a fluidized bed; 11. a cyclone separator; 12. a bag-type dust collector; 20. a first acid gas absorption tower; 21. a first opening; 22. a second opening; 23. a third opening; 24. a fourth opening; 25. a fifth opening; 26. a first cavity; 27. a second cavity; 30. a first conduit; 31. a communicating hole; 40. a first connecting pipe; 41. an end face; 50. a first pump body; 60. a second pump body; 61. a second connecting pipe; 70. a second acid gas absorption tower; 71. a sixth opening; 72. a seventh opening; 73. an eighth opening; 74. a third cavity; 75. a fourth cavity; 80. a second conduit; 90. a third pump body; 91. a third connecting pipe; 101. a first spraying device; 102. a second spraying device; 110. a fan; 120. a third conduit.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides an acid gas absorption system, please refer to fig. 1, including first acid gas absorption tower 20 and first pipeline 30, the first end of first pipeline 30 is used for being linked together with reaction unit to let in the acid gas that generates, first acid gas absorption tower 20 has first absorption cavity, first opening 21 and second opening 22, first absorption cavity is including first cavity 26 and the second cavity 27 that are linked together, first cavity 26 is linked together through the second end of first opening 21 with first pipeline 30; the second cavity 27 is used for containing circulating water; the acid gas absorption system further comprises: and a first connection pipe 40, a first end of the first connection pipe 40 communicating with the second chamber 27 through the second opening 22, a second end of the first connection pipe 40 communicating with the first duct 30, and a second end of the first connection pipe 40 located between the first end and the second end of the first duct 30. The acid gas is an acid gas.

The acid gas absorption system of the utility model comprises a first acid gas absorption tower 20 and a first pipeline 30, wherein the first end of the first pipeline 30 is communicated with a reaction device, and acid gas with dust generated in the reaction device enters the first pipeline 30 from the first end of the first pipeline 30; the first acid gas absorption tower 20 is provided with a first absorption cavity, a first opening 21 and a second opening 22, the first absorption cavity comprises a first cavity 26 and a second cavity 27 which are communicated with each other, the first cavity 26 is communicated with the second end of the first pipeline 30 through the first opening 21, the acid gas with dust reaches the second end of the first pipeline 30 through the first pipeline 30 and then enters the first cavity 26 of the first acid gas absorption tower 20 through the first opening 21, the problem of pipeline blockage can be caused by dust adhesion on the inner wall of the first pipeline 30 in the process that the acid gas reaches the second end from the first end of the first pipeline 30, therefore, the acid gas absorption system further comprises a first connecting pipe 40, the first end of the first connecting pipe 40 is communicated with the second cavity 27 through the second opening 22, circulating water is contained in the second cavity 27, the second end of the first connecting pipe 40 is communicated with the first pipeline 30, the second end of the first connecting pipe 40 is positioned between the first end and the second end of the first pipeline 30, the second end of the first connecting pipe 40 reaches the second end of the first pipeline 27 through the first pipeline, the first opening 30, and the inner wall of the first connecting pipe 30 is flushed along with the existing aluminum oxide gas absorption tower, and the problem of the existing aluminum gas absorption tower is solved. In addition, the first connection pipe 40 is used to input the circulating water in the second cavity 27 into the first pipeline 30, so as to absorb the acid gas and reduce the temperature of the acid gas.

During specific implementation, the acid absorption system comprises a reaction device, the reaction device comprises a fluidized bed 10, the acid absorption system further comprises a cyclone separator 11 and a bag-type dust collector 12, the fluidized bed 10, the cyclone separator 11, the bag-type dust collector 12 and the first end of the first pipeline 30 are sequentially connected, decomposition reaction of a crystalline aluminum chloride material is realized in the fluidized bed 10, alumina and high-temperature acid gas are obtained after decomposition, the reaction temperature inside the fluidized bed is 500 ℃, gas-solid separation of the alumina and the high-temperature acid gas generated after reaction is completed through the cyclone separator 11, the temperature of the high-temperature acid gas is 200 ℃, the high-temperature acid gas comprises hydrogen chloride gas, water vapor and partial dust particles, after dust removal through the bag-type dust collector 12, large-particle dust in the high-temperature acid gas is removed, and the residual hydrogen chloride gas, water vapor and partial small-particle dust enter the first pipeline 30 through the first end of the first pipeline 30.

Specifically, in the first acid gas absorption tower 20, the first cavity 26 is located at an upper portion of the second cavity 27.

In this embodiment, the acid gas absorption system further includes: a first pump body 50, an inlet of the first pump body 50 being in communication with the second opening 22, and an outlet of the first pump body 50 being in communication with a first end of the first connecting tube 40.

In specific implementation, the first pump 50 is used to pump the circulating water in the second cavity 27 into the first pipeline 30 through the connecting pipe, so as to flush the dust adsorbed on the inner wall of the first pipeline 30.

In this embodiment, the first duct 30 is disposed obliquely with respect to the horizontal plane, and a first end of the first duct 30 is disposed higher than a second end thereof. During the concrete implementation, such setting has guaranteed that the circulating water can flow into first sour gas absorption tower 20 from the first end of first pipeline 30 to the second end, has realized the washing effect to first pipeline 30 inner wall.

Specifically, the first duct 30 forms an inclination angle of 5 ° with respect to the horizontal plane in the direction from the first end to the second end of the first duct 30.

In the present embodiment, the first duct 30 has a communication hole 31 in a duct wall thereof, and the second end of the first connection pipe 40 is disposed inside the duct of the first duct 30 through the communication hole 31. In specific implementation, the second end of the first connecting pipe 40 can pass through the communicating hole 31 by the arrangement of the communicating hole 31 to protrude out of the inner wall of the first pipeline 30, so that circulating water flowing out of the second end of the first connecting pipe 40 has more impact force and can not flow only clinging to the inner wall of the first pipeline 30, and the effect of eliminating dust adhered to the inner wall of the first pipeline 30 is enhanced.

In the present embodiment, the end surface 41 of the second end of the first connecting pipe 40 is disposed obliquely with respect to the center line of the second end of the first connecting pipe 40, i.e., the included angle between the end surface 41 and the center line is greater than 0 degree and smaller than 90 degrees.

In specific implementation, the inclined arrangement of the end surface 41 relative to the center line of the second end of the first connecting pipe 40 enables circulating water to form water columns when flowing out from the second end of the first connecting pipe 40, and enhances the impact force on the inner wall of the first pipeline 30, so as to wash away dust adhered to the inner wall of the first pipeline 30.

In this embodiment, the first acid gas absorption tower 20 further has a third opening 23 and a fourth opening 24, the third opening 23 is communicated with the second cavity 27, the fourth opening 24 is communicated with the first cavity 26, and the fourth opening 24 is located at the top of the first acid gas absorption tower 20; the acid gas absorption system further comprises: a second pump 60, the inlet of the second pump 60 communicating with the second chamber 27 through the third opening 23; a second connecting pipe 61, a first end of the second connecting pipe 61 is communicated with the outlet of the second pump body 60, and a second end of the second connecting pipe 61 is communicated with the first cavity 26 through the fourth opening 24.

In specific implementation, the second pump body 60 pumps the circulating water in the second cavity 27 from the third opening 23, pumps the circulating water into the second connecting pipe 61, and finally pumps the circulating water in the second connecting pipe 61 to the second end of the second connecting pipe 61, and the circulating water enters the first cavity 26 through the fourth opening 24 to absorb and cool the acidic gas passing through the first cavity 26.

Specifically, the fourth opening 24 is located at the top of the first cavity 26, the third opening 23 and the second opening 22 are both disposed at the second cavity 27 near the bottom thereof, and the first opening 21 is disposed at the first cavity 26 near the bottom thereof.

In the present embodiment, the second end of the second connection pipe 61 is disposed in the first cavity 26 through the fourth opening 24; the acid gas absorption system further comprises: and the first spraying device 101 is communicated with the second end of the second connecting pipe 61.

During specific implementation, the first spraying device 101 is located in the first cavity 26, and the arrangement of the first spraying device 101 enables the circulating water to be in contact with the acid gas in the first cavity 26 in a larger area, so that the effects of absorbing the acid gas and reducing the temperature are better.

In this embodiment, the first acid gas absorption tower 20 further includes a fifth opening 25 communicating with the first cavity 26; the acid gas absorption system further comprises: a second acid gas absorption tower 70 having a second absorption cavity comprising a third cavity 74 and a fourth cavity 75, the fourth cavity 75 being for containing circulating water; the second acid gas absorption column 70 further has a sixth opening 71 communicating with the third cavity 74; a second pipe 80, a first end of the second pipe 80 is communicated with the first cavity 26 through the fifth opening 25, and a second end of the second pipe 80 is communicated with the sixth opening 71.

In specific implementation, after absorption and temperature reduction in the first cavity 26, the acid gas enters the second pipeline 80 from the fifth opening 25, passes through the second pipeline 80 to reach the sixth opening 71, and enters the third cavity 74 for further treatment.

Specifically, the fifth opening 25 is located between the fourth opening 24 and the first opening 21; the sixth opening 71 is disposed near the bottom of the third cavity 74.

In this embodiment, the second acid gas absorption tower 70 further has a seventh opening 72 and an eighth opening 73, the seventh opening 72 is communicated with the fourth cavity 75, the eighth opening 73 is communicated with the third cavity 74, and the eighth opening 73 is located at the top of the second acid gas absorption tower 70; the acid gas absorption system further comprises: a third pump 90, the inlet of the third pump 90 being in communication with the third chamber 74 through an eighth opening 73; and a third connection pipe 91, a first end of the third connection pipe 91 being communicated with the outlet of the third pump body 90, and a second end of the third connection pipe 91 being communicated with the fourth chamber 75 through the seventh opening 72.

In specific implementation, the third pump body 90 pumps the circulating water in the fourth cavity 75 through the seventh opening 72, pumps the circulating water into the third connecting pipe 91, and finally pumps the circulating water in the third connecting pipe 91 to the second end of the third connecting pipe 91, and the circulating water enters the third cavity 74 through the eighth opening 73 to absorb and cool the acid gas passing through the third cavity 74.

Specifically, the acid gas absorption system further includes a second spray device 102, and the second spray device 102 is communicated with the second end of the third connection pipe 91.

Specifically, the seventh opening 72 is disposed at a position of the fourth cavity 75 near the bottom thereof, and the eighth opening 73 is disposed at the top of the seventh opening 72.

In this embodiment, the acid gas absorption system further includes: a third conduit 120, one end of the third conduit 120 being in communication with the third cavity 74; and a fan 110 disposed on the third duct 120.

In specific implementation, the fan 110 is used for extracting gas in the acid gas absorption system, so that the acid gas can flow from the first pipeline 30, the first acid gas absorption tower 20, the second acid gas absorption tower 70 to the third pipeline 120 in sequence, and the effects of complete cooling and absorption of the acid gas are achieved.

Specifically, the other end of the third pipeline 120 is communicated with the external environment, the acid gas treated by the acid gas absorption system meets the emission standard, and is discharged into the atmosphere from the other end of the third pipeline 120, and the acid gas absorbed in the first acid gas absorption tower 20 and the second acid gas absorption tower 70 is combined with the circulating water to form an acid liquid, which is recycled after the acidity of the acid liquid reaches a certain standard.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the acid gas absorption system of the utility model comprises a first acid gas absorption tower 20 and a first pipeline 30, wherein the first end of the first pipeline 30 is communicated with a reaction device, and acid gas with dust generated in the reaction device enters the first pipeline 30 from the first end of the first pipeline 30; the first acid gas absorption tower 20 has a first absorption cavity, a first opening 21 and a second opening 22, the first absorption cavity includes a first cavity 26 and a second cavity 27 which are communicated, the first cavity 26 is communicated with the second end of the first pipeline 30 through the first opening 21, the acid gas with dust reaches the second end through the first pipeline 30, and then enters the first cavity 26 of the first acid gas absorption tower 20 through the first opening 21, because the dust adheres to the inner wall of the first pipeline 30 to cause the problem of pipeline blockage in the process that the acid gas reaches the second end from the first end of the first pipeline 30, the acid gas absorption system of the present invention further includes a first connection pipe 40, the first end of the first connecting pipe 40 is communicated with the second cavity 27 through the second opening 22, circulating water is contained in the second cavity 27, the second end of the first connecting pipe 40 is communicated with the first pipeline 30, the second end of the first connecting pipe 40 is located between the first end and the second end of the first pipeline 30, the circulating water in the second cavity 27 reaches the position between the first end and the second end of the first pipeline 30 through the first connecting pipe 40, the inner wall of the first pipeline 30 is washed, dust adhered to the inner wall of the first pipeline 30 enters the first acid gas absorption tower 20 along with the circulating water, and therefore the problem that the pipeline is blocked by the dust generated by the reaction of extracting aluminum oxide in the prior art is solved. In addition, the first connection pipe 40 is used to input the circulating water in the second cavity 27 into the first pipeline 30, so as to absorb the acid gas and reduce the temperature of the acid gas.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An acid gas absorption system, comprising a first acid gas absorption tower (20) and a first pipeline (30), wherein a first end of the first pipeline (30) is used for being communicated with a reaction device so as to feed generated acid gas, and the first acid gas absorption tower (20) is provided with a first absorption cavity, a first opening (21) and a second opening (22), the first absorption cavity comprises a first cavity (26) and a second cavity (27) which are communicated, and the first cavity (26) is communicated with a second end of the first pipeline (30) through the first opening (21); the second cavity (27) is used for containing circulating water; the acid gas absorption system further comprises:

a first connection pipe (40), a first end of the first connection pipe (40) communicating with the second cavity (27) through the second opening (22), a second end of the first connection pipe (40) communicating with the first duct (30), and a second end of the first connection pipe (40) located between the first end and the second end of the first duct (30).

2. The acid gas absorption system of claim 1 further comprising:

a first pump body (50), an inlet of the first pump body (50) being in communication with the second opening (22), an outlet of the first pump body (50) being in communication with a first end of the first connecting tube (40).

3. The acid gas absorption system of claim 1 wherein the first conduit (30) is disposed at an angle to the horizontal, the first conduit (30) being disposed at a first end higher than a second end thereof.

4. The acid gas absorption system according to claim 1, wherein the first pipe (30) has a communication hole (31) in a pipe wall thereof, and the second end of the first connection pipe (40) is disposed inside the first pipe (30) through the communication hole (31).

5. The acid gas absorption system according to claim 4, wherein the end face (41) of the second end of the first connection pipe (40) is disposed obliquely with respect to a center line of the second end of the first connection pipe (40).

6. The acid gas absorption system according to any one of claims 1 to 5, wherein the first acid gas absorption column (20) further has a third opening (23) and a fourth opening (24), the third opening (23) being in communication with the second cavity (27), the fourth opening (24) being in communication with the first cavity (26), the fourth opening (24) being located at the top of the first acid gas absorption column (20); the acid gas absorption system further comprises:

a second pump body (60), the inlet of the second pump body (60) communicating with the second chamber (27) through the third opening (23);

a second connecting pipe (61), the first end of the second connecting pipe (61) with the outlet of the second pump body (60) is communicated, and the second end of the second connecting pipe (61) is communicated with the first cavity (26) through the fourth opening (24).

7. The acid gas absorption system according to claim 6, wherein a second end of the second connection pipe (61) is disposed in the first cavity (26) through the fourth opening (24); the acid gas absorption system further comprises:

the first spraying device (101), the first spraying device (101) is communicated with the second end of the second connecting pipe (61).

8. The acid gas absorption system according to any one of claims 1 to 5 wherein the first acid gas absorption tower (20) further comprises a fifth opening (25) in communication with the first cavity (26); the acid gas absorption system further comprises:

a second acid gas absorption tower (70) provided with a second absorption cavity, wherein the second absorption cavity comprises a third cavity (74) and a fourth cavity (75), and the fourth cavity (75) is used for containing circulating water; the second acid gas absorption tower (70) is also provided with a sixth opening (71) communicated with the third cavity (74);

a second conduit (80), a first end of the second conduit (80) being in communication with the first cavity (26) through the fifth opening (25), a second end of the second conduit (80) being in communication with the sixth opening (71).

9. The acid gas absorption system of claim 8 wherein the second acid gas absorption column (70) further has a seventh opening (72) and an eighth opening (73), the seventh opening (72) being in communication with the fourth cavity (75), the eighth opening (73) being in communication with the third cavity (74), the eighth opening (73) being located at the top of the second acid gas absorption column (70); the acid gas absorption system further comprises:

a third pump body (90), the inlet of said third pump body (90) communicating with said third chamber (74) through said eighth opening (73);

a first end of the third connecting pipe (91) is communicated with an outlet of the third pump body (90), and a second end of the third connecting pipe (91) is communicated with the fourth cavity (75) through the seventh opening (72).

10. The acid gas absorption system of claim 8 further comprising:

a third conduit (120), one end of the third conduit (120) being in communication with the third cavity (74);

a fan (110) disposed on the third duct (120).

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