Liquid flow groove exhaust tail gas treatment system

Abstract

The utility model discloses a liquid flow tank exhaust tail gas treatment system which comprises a washing tower, the washing tower is provided with a cavity, a gas inlet and a gas outlet, the gas inlet and the gas outlet are communicated with the cavity, a cooling piece, a washing piece, a spraying piece and a demisting piece are sequentially arranged in the cavity from bottom to top, the gas inlet is located at the lower end of the washing tower, and the gas outlet is located at the lower end of the spraying piece. The gas outlet is formed in the upper end of the washing tower, sulfur-containing tail gas can enter the cavity through the gas inlet and is discharged from the gas outlet after sequentially flowing through the cooling part, the washing part, the spraying part and the demisting part, the cooling part is used for cooling the sulfur-containing tail gas, and the washing part is used for washing the sulfur-containing tail gas so as to reduce the sulfur content in the tail gas; the spraying part is used for spraying the tail gas so as to wash the tail gas, and the demisting part is used for removing entrainment in the tail gas. The liquid flow tank exhaust tail gas treatment system disclosed by the embodiment of the utility model is good in purification effect.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically to a liquid flow tank exhaust gas treatment system. Background Technology

[0002] Traditional sulfuric acid plants release sulfur vapor and hydrogen sulfide into the exhaust gas from the molten sulfur section of the sulfur production line. This can easily affect the on-site environment, irritate the human respiratory system, and cause discomfort. Long-term exposure to such an environment can easily lead to occupational diseases. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a liquid flow tank exhaust gas treatment system, which has good purification effect.

[0004] The liquid flow tank exhaust gas treatment system of this utility model includes a scrubbing tower. The scrubbing tower has a chamber, an air inlet, and an air outlet. The air inlet and the air outlet are connected to the chamber. The chamber is provided with a cooling component, a scrubbing component, a spraying component, and a demisting component from bottom to top. The air inlet is located at the lower end of the scrubbing tower, and the air outlet is located at the upper end of the scrubbing tower. Sulfur-containing exhaust gas can enter the chamber through the air inlet and flow through the cooling component, the scrubbing component, the spraying component, and the demisting component in sequence before being discharged from the air outlet. The cooling component is used to cool and reduce the temperature of the sulfur-containing exhaust gas. The scrubbing component is used to scrub the sulfur-containing exhaust gas to reduce the sulfur content in the exhaust gas. The spraying component is used to spray the exhaust gas to scrub it. The demisting component is used to remove mist from the exhaust gas.

[0005] The liquid flow tank exhaust gas treatment system of this utility model has the following characteristics: after the sulfur-containing exhaust gas enters the chamber, it first passes through a cooling component to reduce the corrosion of the equipment and pipelines. Then, it passes through a washing component to further reduce the sulfur content of the exhaust gas and reduce its corrosion of the equipment and pipelines. Next, it passes through a spray component to further reduce the temperature and sulfur content of the exhaust gas. Finally, it passes through a demister to remove mist and is discharged from the outlet. Compared with the open discharge of sulfur-containing exhaust gas in the prior art, this system effectively protects the environment at the site during exhaust gas discharge, reduces the impact on personnel health, and has a simple process flow, fewer equipment, smaller footprint, and saves costs.

[0006] In some embodiments, the chamber is further provided with a first tank containing a washing liquid. The first tank is located at the bottom of the chamber. After cooling, the sulfur-containing tail gas can generate solid sulfur, which can enter the first tank.

[0007] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a filter press device and a first circulation pump. The first circulation pump connects the first tank and the filter press device. The first circulation pump can pump solid sulfur and washing liquid in the first tank into the filter press device, which is used to filter solid sulfur.

[0008] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a first regulating member disposed between the filter press device and the first tank, the first regulating member being used to monitor and regulate the liquid level of the washing liquid in the first tank.

[0009] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a second tank and a second circulation pump. The second tank contains washing liquid, and the second circulation pump connects the second tank to the spray element. The second circulation pump can pump the washing liquid in the second tank into the spray element.

[0010] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a second regulating component, which is disposed between the outlet of the second circulating pump and the second tank. The second regulating component is used to monitor and regulate the liquid level of the washing liquid in the second tank.

[0011] In some embodiments, the liquid flow tank exhaust gas treatment system further includes:

[0012] An alkali solution device and a third circulation pump, wherein the third circulation pump connects the alkali solution device to the second tank to pump the washing liquid in the alkali solution device into the second tank;

[0013] The third regulating component is located between the outlet of the third circulating pump and the alkali solution device, and is used to monitor and regulate the liquid level of the washing liquid in the alkali solution device.

[0014] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a fourth regulating component, which is disposed between the outlet of the second circulation pump and the third circulation pump. The fourth regulating component is used to monitor the pH value of the washing liquid introduced into the spray component and to adjust the pH value of the washing liquid.

[0015] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a differential pressure sensor connected to the demister. The differential pressure sensor is used to monitor the pressure between the gas above the demister and the gas below the demister. When the differential pressure exceeds a preset value of the differential pressure sensor, the demister is activated to perform demisting.

[0016] In some embodiments, the liquid flow tank exhaust gas treatment system further includes:

[0017] An exhaust fan is connected to the air outlet and is used to extract gas from the chamber.

[0018] An exhaust device is provided, which is connected to the induced draft fan. The induced draft fan draws gas from the chamber into the exhaust device and discharges it from the exhaust device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the liquid flow tank exhaust gas treatment system according to an embodiment of the present invention.

[0020] Reference numerals: 1. Scrubber tower; 11. Chamber; 12. Air inlet; 13. Air outlet; 21. Cooling component; 22. Scrubber component; 23. Spray component; 24. Demisting component; 31. First tank; 32. Second tank; 41. Filter press unit; 42. First circulating pump; 43. First regulating component; 44. First valve; 51. Second circulating pump; 52. Second regulating component; 53. Second valve; 61. Alkali solution unit; 62. Third circulating pump; 63. Third regulating component; 64. Third valve; 65. Fourth regulating component; 71. Differential pressure sensor; 72. Fourth valve; 81. Exhaust fan; 82. Exhaust unit. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] like Figure 1 As shown, the liquid flow tank exhaust gas treatment system of this utility model embodiment includes a scrubbing tower 1. The scrubbing tower 1 has a chamber 11, an air inlet 12, and an air outlet 13. The air inlet 12 and the air outlet 13 are connected to the chamber 11. The chamber 11 is provided with a cooling component 21, a scrubbing component 22, a spraying component 23, and a demisting component 24 in sequence from bottom to top. The air inlet 12 is located at the lower end of the scrubbing tower 1, and the air outlet 13 is located at the upper end of the scrubbing tower 1. The sulfur-containing exhaust gas can enter the chamber 11 through the air inlet 12 and flow through the cooling component 21, the scrubbing component 22, the spraying component 23, and the demisting component 24 in sequence before being discharged from the air outlet 13. The cooling component 21 is used to cool and reduce the sulfur-containing exhaust gas. The scrubbing component 22 is used to scrub the sulfur-containing exhaust gas to reduce the sulfur content in the exhaust gas. The spraying component 23 is used to spray the exhaust gas to scrub it. The demisting component 24 is used to remove mist from the exhaust gas.

[0023] The liquid flow tank exhaust gas treatment system of this utility model has the following steps: after the sulfur-containing exhaust gas enters the chamber 11, it first passes through the cooling component 21 to reduce the corrosion of the equipment and pipelines. Then, it passes through the washing component 22 to further reduce the sulfur content of the exhaust gas and reduce its corrosion of the equipment and pipelines. Next, it passes through the spray component 23 to further reduce the temperature and sulfur content of the exhaust gas. Finally, it passes through the demister 24 to remove the mist and is discharged from the outlet 13. Compared with the open discharge of sulfur-containing exhaust gas in the prior art, this system effectively protects the environment at the site during exhaust gas discharge, reduces the impact on personnel health, and has a simple process flow, fewer equipment, smaller footprint, and saves costs.

[0024] Specifically, the main materials used in the washing tower 1 are stainless steel, duplex steel, fiberglass, carbon steel lined with plastic, carbon steel lined with rubber, cast iron, and plastics such as PP and PE, to improve the corrosion resistance of the washing tower 1 and ensure its service life. The washing tower 1 can be configured as a single-stage washing tower, a two-stage washing tower, or a multi-stage washing tower.

[0025] In some embodiments, the scrubbing tower 1 may also be a venturi, high-efficiency scrubbing, ultra-gravity, traditional packed tower, empty tower, or other types of tower.

[0026] Specifically, the cooling component 21 can adopt the form of non-powered air cooling. When the cooling component 21 is working, it cools the high-temperature sulfur-containing tail gas by introducing air into the chamber 11. Compared with the existing technology, there is no need to set up a cooling tower or cooler to cool the sulfur-containing tail gas, thus saving investment costs.

[0027] In some embodiments, the cooling component 21 may also be powered air cooling, such as the outlet pipe of the induced draft fan 81 being connected to the inlet of the scrubbing tower 1, or a separate dilution fan, etc.

[0028] Specifically, the washing component 22 is a cyclone washing device that requires no external power during operation, has low pressure drop, low operating cost, good gas-liquid mass and heat transfer effect, high capture rate of sulfur vapor into solid sulfur, long reaction time and full reaction, high removal rate of hydrogen sulfide, and is easy to manufacture and process, not easy to clog, and has high reliability.

[0029] In some embodiments, the washing component 22 may be other types of components to achieve gas-liquid "three transfers and one reaction", namely mass transfer, heat transfer, momentum transfer and chemical reaction.

[0030] Specifically, the spray component 23 has low resistance, good spraying effect, is easy to manufacture and process, is not easy to clog, and has high reliability.

[0031] Specifically, the demister 24 has low resistance, good demisting effect, is easy to manufacture and process, is not easy to clog, and has high reliability.

[0032] In some embodiments, a first tank 31 is provided in the chamber 11, and the first tank 31 contains washing liquid. The first tank 31 is located at the bottom of the chamber 11. After the sulfur-containing tail gas is cooled, solid sulfur can be generated and the solid sulfur can enter the first tank 31.

[0033] Specifically, the first tank 31 and the washing tower 1 can be integrally formed, or the washing tower 1 and the first tank 31 can be set separately.

[0034] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a filter press device 41 and a first circulation pump 42. The first circulation pump 42 connects the first tank 31 and the filter press device 41. The first circulation pump 42 can pump the solid sulfur and washing liquid in the first tank 31 into the filter press device 41. The filter press device 41 is used to filter the solid sulfur.

[0035] Specifically, the filter press unit 41 can also be configured as a filter, pipeline filter, or other filtration and separation equipment.

[0036] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a first regulating member 43, which is disposed between the filter press device 41 and the first tank 31. The first regulating member 43 is used to monitor and regulate the liquid level of the washing liquid in the first tank 31.

[0037] Specifically, the exhaust gas treatment system for the liquid flow tank also includes a first valve 44, which is located between the outlet of the first circulating pump 42 and the first tank 31. The first regulating component 43 is connected to the first valve 44. When the first regulating component 43 detects that the liquid level of the washing liquid in the first tank 31 is lower than the minimum liquid level when the first circulating pump 42 is working normally, the first regulating component 43 activates the first valve 44 to open, so that the washing liquid pumped out of the first tank 31 by the first circulating pump 42 can flow back into the first tank 31 to ensure the normal operation of the first circulating pump 42. Moreover, the above operation can realize fully automatic operation, adjustment and control, saving manpower.

[0038] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a second tank 32 and a second circulation pump 51. The second tank 32 contains washing liquid, and the second circulation pump 51 connects the second tank 32 with the spray element 23. The second circulation pump 51 can pump the washing liquid in the second tank 32 into the spray element 23 to spray and cool the exhaust gas. The operation process is simple.

[0039] Specifically, the top of the first tank 31 is connected to the top of the second tank 32, and the washing liquid in the first tank 31 is the same as the washing liquid in the second tank 32. The first tank 31 and the second tank 32 can be connected or set separately. The filter press device 41 is connected to the second tank 32. After the filter press device 41 filters the solid sulfur, the washing liquid in the filter press device 41 can be passed into the second tank 32, so that the washing liquid can be recycled. It also ensures that the washing liquid does not contain solid sulfur, making the equipment and pipelines less prone to clogging and ensuring high reliability.

[0040] In some other embodiments, the first circulation pump 42 and the second circulation pump 51 may also be combined, that is, the circulation pump has two liquid outlets, one of which is connected to the filter press and the other is connected to the spray element 23.

[0041] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a second regulating member 52, which is disposed between the outlet of the second circulating pump 51 and the second tank 32. The second regulating member 52 is used to monitor and regulate the liquid level of the washing liquid in the second tank 32.

[0042] Specifically, the exhaust gas treatment system for the liquid flow tank also includes a second valve 53. The second valve 53 is located between the outlet of the second circulation pump 51 and the second tank 32. The second regulating component 52 is connected to the second valve 53. When the second regulating component 52 detects that the liquid level of the washing liquid in the second tank 32 is lower than the minimum liquid level when the second circulation pump 51 is working normally, the second regulating component 52 activates the second valve 53 to open, so that the washing liquid pumped out of the second tank 32 by the second circulation pump 51 can flow back into the second tank 32 to ensure the normal operation of the second circulation pump 51. Moreover, the above operation can realize fully automatic operation, adjustment and control, saving manpower.

[0043] In some embodiments, the exhaust gas treatment system for the liquid flow tank further includes an alkali solution device 61, a third circulation pump 62, and a third regulating member 63. The third circulation pump 62 connects the alkali solution device 61 and the second tank 32 to pump the washing liquid in the alkali solution device 61 into the second tank 32. The third regulating member 63 is disposed between the outlet of the third circulation pump 62 and the alkali solution device 61, and is used to monitor and regulate the liquid level of the washing liquid in the alkali solution device 61.

[0044] Specifically, the exhaust gas treatment system for the liquid flow tank also includes a third valve 64, which is located between the outlet of the third circulation pump 62 and the alkali solution device 61. A third regulating valve is connected to the third valve 64. When the third regulating valve detects that the liquid level of the alkali solution in the alkali solution device 61 is lower than the minimum liquid level when the third circulation pump 62 is working normally, the third regulating valve starts the third valve 64 to open, so that the alkali solution pumped out of the alkali solution device 61 by the third circulation pump 62 can flow back into the alkali solution device 61, thereby ensuring the normal operation of the third circulation pump 62. Moreover, the above operation can achieve fully automatic operation, regulation and control, saving manpower.

[0045] Specifically, the alkali solution device 61 uses a ratio of water and alkali to prepare the alkali solution, or it can be prepared by connecting an external alkali solution pipeline.

[0046] In other embodiments, the alkaline solution device 61 may be omitted and water washing or other weakly alkaline liquids may be used instead.

[0047] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a fourth regulating member 65, which is disposed between the outlet of the second circulation pump 51 and the third circulation pump 62. The fourth regulating member 65 is used to monitor the pH value of the washing liquid introduced into the spray member 23 and adjust the pH value of the washing liquid.

[0048] Specifically, when the fourth regulating element 65 detects that the pH value of the washing liquid entering the spray element 23 is not up to standard, it can be adjusted by controlling the ratio of water to alkali in the alkali device 61 to improve the spraying efficiency of the spray element 23 on the exhaust gas.

[0049] In some embodiments, the liquid flow tank exhaust gas treatment system further includes a differential pressure sensor 71, which is connected to the demister 24. The differential pressure sensor 71 is used to monitor the pressure between the gas above the demister 24 and the gas below the demister 24. When the differential pressure exceeds the preset value of the differential pressure sensor 71, the demister 24 is activated to perform demisting.

[0050] Specifically, the exhaust gas treatment system of the liquid flow tank also includes a fourth valve 72, which is located between the demister 24 and the external water supply system. The differential pressure sensor 71 is connected to the fourth valve 72. When the differential pressure sensor 71 detects that the differential pressure exceeds a preset value, the differential pressure sensor 71 activates the fourth valve 72. The water supply system enters the demister 24 through the fourth valve 72 to demister the mist, thereby achieving automatic rinsing of the mist.

[0051] In some embodiments, the exhaust gas treatment system for the liquid flow tank further includes an induced draft fan 81 and an exhaust component 82. The induced draft fan 81 is connected to the exhaust port 13 and is used to extract gas from the chamber 11. The exhaust component 82 is connected to the induced draft fan 81, and the induced draft fan 81 draws gas from the chamber 11 into the exhaust component 82 and discharges it from the exhaust component 82. Specifically, the exhaust component 82 is an exhaust pipe.

[0052] In other embodiments, the exhaust gas treatment system of the liquid flow tank may also adopt configurations such as front-tower and in-tower fans, or even eliminate the induced draft fan 81 and directly use the suction force of the exhaust component 82 to overcome the system resistance.

[0053] In some other embodiments, the exhaust element 82 may also be omitted.

[0054] The liquid flow tank exhaust gas treatment system of this utility model embodiment has a high degree of automation and is controlled by DCS or PLC. A thermal resistor (not shown) is installed at the air inlet 12. When the thermal resistor detects that the temperature at the air inlet 12 has risen to a predetermined value, the second circulation pump 51 is started to circulate the washing liquid in the second tank 32. Then, the induced draft fan 81 is started so that the exhaust gas can move upward under the action of the induced draft fan 81 after entering the chamber 11. After the sulfur-containing exhaust gas enters the chamber 11, it is cooled down by the cooling component 21, washed and heat-exchanged by the washing component 22, sprayed and washed by the spray component 23, and the mist in the exhaust gas is removed by the demister 24. The washing liquid enters the second tank 32 for recycling. The purified exhaust gas is discharged through the induced draft fan 81 and the exhaust component 82.

[0055] The liquid flow tank exhaust gas treatment system of this utility model embodiment can recover sulfur in the exhaust gas, which has good economic benefits. The exhaust gas can meet the emission standards, reducing environmental pollution and providing good environmental benefits. Moreover, it has a high degree of automation, which can effectively reduce the labor intensity of personnel. In addition, the process flow is classic, with fewer equipment, smaller footprint, lower investment cost, lower operating cost, reliable device, low failure rate, and low maintenance cost.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A system for treating exhaust gas from a liquid flow tank, characterized in that, The system includes a scrubbing tower (1), which has a chamber (11), an air inlet (12), and an air outlet (13). The air inlet (12) and the air outlet (13) are connected to the chamber (11). The chamber (11) is provided with a cooling component (21), a scrubbing component (22), a spraying component (23), and a demisting component (24) arranged sequentially from bottom to top. The air inlet (12) is located at the lower end of the scrubbing tower (1), and the air outlet (13) is located at the upper end of the scrubbing tower (1). Sulfur-containing tail gas can pass through the scrubbing tower (1). The air inlet (12) enters the chamber (11) and flows sequentially through the cooling component (21), the washing component (22), the spray component (23) and the demister (24) before being discharged from the outlet (13). The cooling component (21) is used to cool and reduce the sulfur-containing tail gas. The washing component (22) is used to wash the sulfur-containing tail gas to reduce the sulfur content in the tail gas. The spray component (23) is used to spray the tail gas to wash it. The demister (24) is used to remove mist from the tail gas.

2. The liquid flow tank exhaust gas treatment system according to claim 1, characterized in that, The chamber (11) is also provided with a first tank (31), which contains washing liquid. The first tank (31) is located at the bottom of the chamber (11). After the sulfur-containing tail gas is cooled, solid sulfur can be generated and the solid sulfur can enter the first tank (31).

3. The liquid flow tank exhaust gas treatment system according to claim 2, characterized in that, It also includes a filter press device (41) and a first circulation pump (42), the first circulation pump (42) connecting the first tank (31) and the filter press device (41), the first circulation pump (42) can pump solid sulfur and washing liquid in the first tank (31) into the filter press device (41), the filter press device (41) is used to filter solid sulfur.

4. The liquid flow tank exhaust gas treatment system according to claim 3, characterized in that, It also includes a first adjusting member (43), which is disposed between the filter press device (41) and the first tank (31). The first adjusting member (43) is used to monitor and adjust the liquid level of the washing liquid in the first tank (31).

5. The liquid flow tank exhaust gas treatment system according to claim 1, characterized in that, It also includes a second tank (32) and a second circulation pump (51). The second tank (32) contains washing liquid, and the second circulation pump (51) connects the second tank (32) with the spray element (23). The second circulation pump (51) can pump the washing liquid in the second tank (32) into the spray element (23).

6. The liquid flow tank exhaust gas treatment system according to claim 5, characterized in that, It also includes a second regulating component (52), which is located between the outlet of the second circulating pump (51) and the second tank (32). The second regulating component (52) is used to monitor and regulate the liquid level of the washing liquid in the second tank (32).

7. The liquid flow tank exhaust gas treatment system according to claim 5, characterized in that, Also includes: The alkaline solution device (61) and the third circulation pump (62) are connected to the alkaline solution device (61) and the second tank (32) to pump the washing liquid in the alkaline solution device (61) into the second tank (32); The third regulating component (63) is located between the outlet of the third circulating pump (62) and the alkali device (61). The third regulating component (63) is used to monitor and regulate the liquid level of the washing liquid in the alkali device (61).

8. The liquid flow tank exhaust gas treatment system according to claim 7, characterized in that, It also includes a fourth regulating component (65), which is located between the outlet of the second circulation pump (51) and the third circulation pump (62). The fourth regulating component (65) is used to monitor the pH value of the washing liquid entering the spray component (23) and adjust the pH value of the washing liquid.

9. The liquid flow tank exhaust gas treatment system according to claim 1, characterized in that, It also includes a differential pressure sensor (71), which is connected to the demister (24). The differential pressure sensor (71) is used to monitor the pressure between the gas above the demister (24) and the gas below the demister (24). When the differential pressure exceeds the preset value of the differential pressure sensor (71), the demister (24) is activated to perform demisting.

10. The liquid flow tank exhaust gas treatment system according to claim 1, characterized in that, Also includes: An exhaust fan (81) is connected to the air outlet (13) and is used to extract gas from the chamber (11). An exhaust component (82) is connected to the induced draft fan (81), which draws gas from the chamber (11) into the exhaust component (82) and discharges it from the exhaust component (82).

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