A gas collection and treatment device for coal gasification fine slag filter.

Abstract

This utility model discloses a device for collecting and treating the diffused gas from a coal gasification fine slag filter, comprising: a gas-liquid separation tank, a spray unit, a fine slag filtrate tank, and an activated carbon adsorption tank. The gas-liquid separation tank has its inlet connected to the outlet of the fine slag filter, and an exhaust port is provided at the top. The spray unit includes a spray pipe, a nozzle, and an acidic liquid storage tank. One end of the spray pipe is located inside the gas-liquid separation tank and connected to the nozzle, while the other end extends and is connected to the outlet of the acidic liquid storage tank. The inlet of the fine slag filtrate tank is connected to the outlet at the bottom of the gas-liquid separation tank, and the outlet at the bottom of the fine slag filtrate tank is connected to the side of the acidic liquid storage tank. The inlet of the activated carbon adsorption tank is connected to the outlet of the gas-liquid separation tank. Therefore, the device for collecting and treating the diffused gas from a coal gasification fine slag filter disclosed in this utility model can effectively adsorb NH3 and VOCs in the diffused gas.

Description

Technical Field

[0001] This application relates to the technical field of chemical waste gas treatment equipment, and in particular to a device for collecting and treating diffused gas from a coal gasification fine slag filter. Background Technology

[0002] Coal gasification is one of the core technologies of modern coal chemical industry, and the fine slag produced needs to be separated into solid and liquid phases by a filter. However, during the dehydration process of the fine slag filter, it releases diffuse gases containing trace amounts of dust and harmful gases (such as NH3 and VOCs). If these gases are directly released into the air, they will cause certain hazards to the operators and are also detrimental to environmental protection.

[0003] There is currently an exhaust device for a fine slag filter, which includes a separatory tank located at the outlet of the vacuum pump of the fine slag filter. The bottom of the separatory tank is provided with a drain port, which is connected to the filter tank through a drain pipe. The top of the separatory tank is provided with an exhaust port, which is connected to the separatory tank through a U-shaped exhaust pipe.

[0004] The exhaust device of the aforementioned fine slag filter can further cool the steam through the inverted U-shaped exhaust pipe. After the exhaust pipe is diverted to the liquid distribution tank, the phenomenon of water flowing on the factory walls and water accumulation on the floor is eliminated. Therefore, the main purpose of the existing fine slag filter exhaust device is to remove droplets in the gas. Its ability to treat NH3 and VOCs contained in the gas is limited, which means that the gas discharged in the end will still cause harm to the operators and also damage the environment. Utility Model Content

[0005] This application provides a gas collection and treatment device for a coal gasification fine slag filter, which can effectively treat NH3 and VOCs contained in the gas from the fine slag filter.

[0006] This utility model embodiment provides a device for collecting and treating diffused gas from a coal gasification fine slag filter, comprising:

[0007] The gas-liquid separator has an air inlet at the bottom connected to the air outlet of the fine residue filter, and an exhaust port is also provided on the top side of the gas-liquid separator.

[0008] The spray unit includes a spray pipe, a nozzle, and an acidic liquid storage tank. One end of the spray pipe is located inside the gas-liquid separator and connected to the nozzle, while the other end of the spray pipe extends outside the gas-liquid separator and is connected to the outlet of the acidic liquid storage tank.

[0009] The fine residue filtrate tank has its inlet connected to the outlet at the bottom of the gas-liquid separator. A filter membrane is installed inside the fine residue filtrate tank, and the outlet at the bottom of the fine residue filtrate tank is connected to the side of the acidic liquid storage tank.

[0010] The activated carbon adsorption tank has its inlet connected to the outlet of the gas-liquid separator, and its exhaust outlet connected to the exhaust chimney.

[0011] Preferably, a horizontal partition is provided in the middle of the acidic liquid storage tank, which divides the acidic liquid storage tank into an upper concentrated liquid chamber and a lower spray chamber. The drain port at the bottom of the fine residue filter tank is connected to the side wall of the spray chamber through a liquid circulation pipeline. A pH sensor is also provided in the spray chamber. A connecting pipe is vertically provided on the partition to connect the concentrated liquid chamber and the spray chamber. A shut-off valve is provided on the connecting pipe. Both the pH sensor and the shut-off valve are connected to the control system.

[0012] Preferably, a stirring shaft is also provided inside the spray chamber, and a stirring motor is provided at the bottom of the spray chamber. The stirring shaft is connected to the output shaft of the stirring motor, and the stirring motor is connected to the control system.

[0013] Preferably, the nozzle is a liquefaction nozzle.

[0014] Preferably, the gas-liquid separator is further provided with multiple sets of baffle units, which are arranged sequentially from bottom to top between the gas inlet and the gas outlet of the gas-liquid separator. Each set of baffle units includes multiple first baffle plates and second baffle plates arranged vertically. The first baffle plates are inclined, and the inclination direction of the second baffle plates is opposite to that of the first baffle plates. The corresponding first baffle plates and second baffle plates are connected by vertical plates. The two ends of the first baffle plates, the second baffle plates and the vertical plates are fixedly connected to the inner wall of the gas-liquid separator.

[0015] Preferably, both the circulating pump and the level gauge are connected to the control system.

[0016] Preferably, the top of the fine slag filter is also provided with a vent gas collection hood, which is fixedly connected to the side support of the fine slag filter.

[0017] Preferably, an induced draft fan is also provided between the vent gas collection hood and the gas-liquid separator. The vent gas collection hood, the induced draft fan, and the gas-liquid separator are connected in sequence by an induced draft pipe. A first shut-off valve is provided on the induced draft pipe between the induced draft fan and the gas-liquid separator.

[0018] Preferably, the gas outlet of the gas-liquid separator is connected to the gas inlet of the activated carbon adsorption tank via a connecting pipeline, and a second shut-off valve is installed on the connecting pipeline. The drain outlet at the bottom of the gas-liquid separator is connected to the fine slag filter tank via a wastewater discharge pipe, and a liquid level control valve is installed on the wastewater discharge pipe.

[0019] Preferably, a flow regulating valve is installed on the spray pipe.

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a device for collecting and treating the vent gas from a coal gasification fine slag filter. When harmful gases containing NH3 and VOCs are discharged from the fine slag filter, they enter a gas-liquid separator after passing through this device. Acidic gas (such as sulfuric acid or hydrochloric acid) is then sprayed into the gas-liquid separator through a spray pipe 7. The acidic liquid can be neutralized through a neutralization reaction (NH3 + H+). + →NH4 + The gas absorbs NH3. Therefore, when the acidic liquid comes into contact with the gas in the gas-liquid separator, NH3 is adsorbed first. Then, the remaining gas enters the activated carbon adsorption tank. Because the activated carbon adsorption tank is filled with activated carbon, which is a porous carbonaceous material with a well-developed pore structure, the activated carbon inside the activated carbon adsorption tank can effectively adsorb VOCs in the gas. Finally, the cleaned gas is discharged into the atmosphere through the exhaust gas emission chimney. In summary, the gas collection and treatment device for the coal gasification fine slag filter disclosed in this utility model can effectively adsorb NH3 and VOCs in the gas. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a coal gasification fine slag filter diffuse gas collection and treatment device according to the present invention;

[0024] Figure 2 This is a schematic diagram of an acidic liquid storage tank on a coal gasification fine slag filter diffuser gas collection and treatment device according to the present invention.

[0025] Figure 3 This is a schematic diagram of a gas-liquid separation tank for collecting and treating diffused gas in a coal gasification fine slag filter according to the present invention.

[0026] Icons: 1. Fine slag filter; 2. Vent gas collection hood; 3. Exhaust pipe; 4. Exhaust fan; 5. Gas-liquid separator; 6. Wastewater discharge pipe; 7. Spray pipe; 8. Connecting pipeline; 9. Activated carbon adsorption tank; 10. Exhaust gas chimney; 11. Filtration tank; 12. Acidic liquid storage tank; 13. Spray nozzle; 14. Baffle plate; 15. Concentrated liquid chamber; 16. Spray chamber; 17. Connecting pipe; 18. Stirring shaft; 19-1. First baffle plate; 19-2. Second baffle plate; 19-3. Vertical plate; 20. Liquid circulation pipeline. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0028] This utility model provides a device for collecting and treating the diffused gas from a coal gasification fine slag filter, such as... Figures 1-2 As shown, the system includes: a gas-liquid separator 5, a spray unit, a fine sludge filtrate tank 11, and an activated carbon adsorption tank 9. The gas-liquid separator 5 has an air inlet at its bottom connected to the air outlet of the fine sludge filter 1, and an exhaust port on its top side. The spray unit includes a spray pipe 7, a nozzle 13, and an acidic liquid storage tank 12. One end of the spray pipe 7 is located inside the gas-liquid separator 5 and connected to the nozzle 13, while the other end extends outside the gas-liquid separator 5 and is connected to the outlet of the acidic liquid storage tank 12. The nozzle 13 is located... Located inside the gas-liquid separator 5, downward liquid spraying is possible; the inlet of the fine slag filtrate tank 11 is connected to the outlet at the bottom of the gas-liquid separator 5, a filter membrane is installed inside the fine slag filtrate tank 11, and the outlet at the bottom of the fine slag filtrate tank 11 is connected to the side of the acidic liquid storage tank 12. The liquid filtered by the filter membrane can finally enter the acidic liquid storage tank 12, realizing the reuse of the acidic liquid; the inlet of the activated carbon adsorption tank 9 is connected to the outlet of the gas-liquid separator 5, and the outlet of the activated carbon adsorption tank 9 is connected to the exhaust gas chimney 10.

[0029] This utility model discloses a coal gasification fine slag filter exhaust gas collection and treatment device. To achieve effective adsorption of NH3 and VOCs, when harmful gases containing NH3 and VOCs are discharged from the fine slag filter 1, the exhaust gas enters the gas-liquid separator 5 and is then sprayed with acidic gas (such as sulfuric acid or hydrochloric acid) through the spray pipe 7. The acidic liquid can be neutralized through the reaction (NH3 + H+). + →NH4 + The gas absorbs NH3. Therefore, when the acidic liquid comes into contact with the gas-liquid separator 5, the NH3 is first adsorbed. Then, the remaining gas enters the activated carbon adsorption tank 9. Because the activated carbon adsorption tank 9 is filled with activated carbon, which is a porous carbonaceous material with a well-developed pore structure, the activated carbon inside the activated carbon adsorption tank 9 can effectively adsorb VOCs in the gas. Finally, the cleaned gas is discharged into the atmosphere through the exhaust gas emission chimney 10. In summary, the gas collection and treatment device for the coal gasification fine slag filter disclosed in this utility model can effectively adsorb NH3 and VOCs in the gas.

[0030] Furthermore, a flow regulating valve is installed on the spray pipe 7. The main function of the flow regulating valve is to control the fluid flow rate in the spray system. The flow regulating valve can accurately regulate the fluid flow rate in the spray pipe to ensure that the operation of the spray system meets the design requirements.

[0031] When the filtered liquid is repeatedly introduced into the acidic liquid storage tank 12, its acidity may be affected, thus affecting the adsorption effect on NH3. Therefore, in this embodiment, a horizontal partition 14 is provided in the middle of the acidic liquid storage tank 12. The partition 14 divides the acidic liquid storage tank 12 into an upper concentrated liquid chamber 15 and a lower spray chamber 16. The drain port at the bottom of the fine residue filtrate tank 11 is connected to the side wall of the spray chamber 16 through a liquid circulation pipeline 20. A pH sensor is also provided in the spray chamber 16. A connecting pipe 17 is vertically provided on the partition 14 to connect the concentrated liquid chamber 15 and the spray chamber 16. A shut-off valve is provided on the connecting pipe 17. Both the pH sensor and the shut-off valve are connected to the control system. When the pH sensor detects the pH value in the spray chamber 16 and the control system determines that the solution in the spray chamber 16 cannot effectively adsorb NH3, the control system opens the shut-off valve on the connecting pipe 17, allowing concentrated sulfuric acid or concentrated hydrochloric acid from the concentrated liquid chamber 15 to enter the spray chamber 16. This neutralizes the liquid in the spray chamber 16 with the concentrated sulfuric acid or concentrated hydrochloric acid, enabling normal adsorption in the spray chamber 16. When spraying for the first time through the spray pipe 7, a suitable acidic gas can be directly injected through the side of the spray chamber 16.

[0032] To ensure uniform mixing of the liquid in the spray chamber 16 after the addition of concentrated sulfuric acid or concentrated hydrochloric acid, a stirring shaft 18 is also provided in the spray chamber 16 disclosed in this embodiment. A stirring motor is provided at the bottom of the spray chamber 16, and the stirring shaft 18 is connected to the output shaft of the stirring motor. The stirring motor is connected to the control system. When concentrated sulfuric acid and concentrated hydrochloric acid in the concentrated liquid chamber 15 enter the spray chamber 16, the control system controls the motor to drive the stirring shaft 18 to rotate, thereby stirring the liquid in the spray chamber 16. Afterward, when the liquid in the spray chamber 16 returns to the normal pH level, the control system controls the shut-off valve to be closed.

[0033] Furthermore, in this embodiment, the nozzle 13 is a liquefaction nozzle. When the liquefaction nozzle sprays acidic liquid, the liquid particle size can be refined to 10-50 micrometers through atomization technology, which increases the gas-liquid contact area by 3-5 times. At the same time, the spraying process removes heat, which reduces the liquid temperature by 5-15°C. After the liquid temperature is reduced, the mass transfer efficiency between acidic media (such as sulfuric acid and hydrochloric acid) and ammonia is significantly improved, thereby improving the adsorption effect of NH3.

[0034] like Figure 3As shown, the gas-liquid separator 5 disclosed in this embodiment is also provided with multiple sets of baffle units. These baffle units are arranged sequentially from bottom to top between the gas inlet and outlet of the gas-liquid separator 5. Each baffle unit includes multiple first baffle plates 19-1 and second baffle plates 19-2 arranged vertically. The first baffle plates 19-1 are inclined, and the inclination direction of the second baffle plates 19-2 is opposite to that of the first baffle plates 19-1. The corresponding first baffle plates 19-1 and second baffle plates 19-2 are connected by a vertical plate 19. -3 connection, the two ends of the first baffle plate 19-1, the second baffle plate 19-2 and the vertical plate 19-3 are fixedly connected to the inner wall of the gas-liquid separator 5 respectively; when the diffused gas flows from bottom to top through multiple sets of baffle units, the acidic liquid sprayed at the same time also passes through multiple sets of baffle units from top to bottom. In this process, through the baffle unit composed of the first baffle plate 19-1, the second baffle plate 19-2 and the vertical plate 19-3, the contact path between the acidic liquid and the diffused gas can be extended, and the acidic liquid and the diffused gas can be fully contacted, thereby achieving effective adsorption of NH3.

[0035] Furthermore, a circulation pump is installed on the liquid circulation pipeline 20, and a level gauge is installed in the spray chamber 16. Both the circulation pump and the level gauge are connected to the control system. The level gauge can monitor the liquid level in the spray chamber 16 in real time and transmit the detected data to the controller. When the control system determines that the liquid level is insufficient, it can turn on the circulation pump to allow the liquid in the fine slag filter tank 11 to circulate into the spray chamber 16.

[0036] To ensure that all the gas exiting the fine slag filter 1 enters the gas-liquid separator 5, a venting gas collection hood 2 is also provided on the top of the fine slag filter 1 in this embodiment. The venting gas collection hood 2 is fixedly connected to the side support of the fine slag filter 1. The venting gas collection hood 2 is made of resin air curtain and corrosion-resistant stainless steel, and is fixed to the side supports of the fine slag filter 1 to prevent gas leakage. Because the venting gas collection hood 2 completely covers the top of the fine slag filter 1 in this way, it can effectively introduce all the gas discharged from the fine slag filter 1 into the gas-liquid separator 5, thereby effectively preventing harmful gases from spreading into the surrounding air.

[0037] Furthermore, in this embodiment, an induced draft fan 4 is also provided between the diffused gas collection hood 2 and the gas-liquid separator 5. The diffused gas collection hood 2, the induced draft fan 4, and the gas-liquid separator 5 are connected sequentially by an induced draft pipe 3. The design of the diffused gas collection hood 2 and the induced draft fan 4 takes into account the principles of airflow dynamics to ensure that the diffused gas can be fully captured and to reduce escape. The induced draft fan 4 can be an axial flow fan or a centrifugal fan. The negative pressure generated by the axial flow fan or centrifugal fan draws the diffused gas through the pipe 2 to the treatment system. The negative pressure value is adjusted according to the diffused gas flow rate, and the range is -500 to -1500 Pa.

[0038] Furthermore, to achieve control during the gas collection and treatment process, a first shut-off valve is installed on the duct 3 between the induced draft fan 4 and the gas-liquid separator 5. The main function of the first shut-off valve is to control and isolate the fluid channel between the induced draft fan 4 and the gas-liquid separator 5, ensuring the safe and stable operation of the system and convenient maintenance. For example, in the event of an emergency, such as equipment failure, pipeline leakage, or system overpressure, the first shut-off valve can be quickly closed to cut off the connection between the induced draft fan 4 and the gas-liquid separator 5, preventing the accident from escalating and ensuring the safety of personnel and equipment.

[0039] The outlet of the gas-liquid separator 5 and the inlet of the activated carbon adsorption tank 9 are connected by a connecting pipeline 8. A second shut-off valve is installed on the connecting pipeline 8. The main function of the second shut-off valve is to control and isolate the gas passage between the two devices, ensuring safe operation, efficient operation, and convenient maintenance of the system. For example, if the gas-liquid separator or activated carbon adsorption tank malfunctions (such as equipment leakage or overpressure), the second shut-off valve can quickly close, cutting off the gas flow, preventing the accident from escalating, and ensuring the safety of personnel and equipment. The drain outlet at the bottom of the gas-liquid separator 5 is connected to the fine sludge filter tank 11 via a wastewater discharge pipe 6. A level control valve is installed on the wastewater discharge pipe 6, which is connected to the control system. The level control valve automatically opens or closes the valve by monitoring the liquid level in the wastewater discharge pipe, maintaining the liquid level within the set range. This avoids overflow pollution caused by excessively high liquid levels or disruption to normal equipment operation due to excessively low liquid levels.

[0040] The improved coal gasification fine slag filter gas collection and treatment device of this invention was simulated and tested in the laboratory. The specific test contents are as follows:

[0041] Test conditions: Simulated diffuse gas (PM: 300 mg / m³) 3 (NH3: 100ppm, humidity: 70%)

[0042] result:

[0043] PM removal rate: 99.8% (outlet concentration ≤ 0.5 mg / m³) 3 );

[0044] NH3 adsorption rate: 98.5% (outlet concentration ≤ 1.5 ppm);

[0045] VOCs monitoring data: VOC detection value 15ug / m³ 3 The TVOC detection value was 0.20 mg / m³. 3 ;

[0046] System resistance: ≤1200Pa (lower than the industry average of 1500Pa).

[0047] In summary, the coal gasification fine slag filter exhaust gas collection and treatment device disclosed in this utility model, when the harmful gas containing NH3 and VOCs discharged from the fine slag filter 1 passes through the collection and treatment device, introduces the harmful gas into the gas-liquid separation tank 5, and removes large particulate dust and NH3 in the harmful gas by spraying in the gas-liquid separation tank 5, thereby reducing the burden on the subsequent activated carbon adsorption tank 9. When the gas after removing large particulate dust and NH3 passes through the activated carbon adsorption tank 9, the activated carbon inside the activated carbon adsorption tank 9 can effectively adsorb the VOCs in the gas. Finally, the cleaned gas is discharged into the atmosphere through the tail gas emission chimney 10. Therefore, the coal gasification fine slag filter exhaust gas collection and treatment device disclosed in this utility model adopts a multi-stage synergistic treatment technology, that is, through a three-stage series process of waste gas collection → spray washing → chemical adsorption (harmful gas), the entire process of waste gas collection and treatment is controlled; and high iodine value activated carbon (adsorption capacity ≥1000mg / g) is used to improve adaptability to complex working conditions. In summary, this utility model can effectively treat the gas emitted by the coal gasification fine slag filter, ensuring that the treated gas meets environmental protection requirements, thereby avoiding harm to construction personnel.

[0048] This invention utilizes a synergistic and efficient approach to treat the emitted gas from coal gasification fine slag filters, achieving environmental compliance and making it suitable for industrial waste gas treatment in fields such as coal gasification and coal chemical engineering.

[0049] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the embodiments of this utility model and simplifying the description. They do not 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0050] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0051] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A coal gasification fine slag filter machine scattered gas collection treatment device characterized by, include: The gas-liquid separator (5) has an air inlet at its bottom connected to the air outlet of the fine slag filter (1), and an exhaust port is also provided on the top side of the gas-liquid separator (5). The spray unit includes a spray pipe (7), a nozzle (13), and an acidic liquid storage tank (12). One end of the spray pipe (7) is located inside the gas-liquid separator (5) and connected to the nozzle (13). The other end of the spray pipe (7) extends out of the gas-liquid separator (5) and is connected to the outlet of the acidic liquid storage tank (12). The fine residue filtrate tank (11) has its inlet connected to the outlet at the bottom of the gas-liquid separator (5). A filter membrane is installed in the fine residue filtrate tank (11). The outlet at the bottom of the fine residue filtrate tank (11) is connected to the side of the acidic liquid storage tank (12). The activated carbon adsorption tank (9) has its air inlet connected to the air outlet of the gas-liquid separator (5), and its exhaust outlet is connected to the exhaust gas chimney (10).

2. The device according to claim 1, characterized in that, A horizontal partition (14) is provided in the middle of the acidic liquid storage tank (12). The partition (14) divides the acidic liquid storage tank (12) into an upper concentrated liquid chamber (15) and a lower spray chamber (16). The drain port at the bottom of the fine residue filtrate tank (11) is connected to the side wall of the spray chamber (16) through a liquid circulation pipeline (20). A pH sensor is also provided in the spray chamber (16). A connecting pipe (17) is vertically provided on the partition (14) to connect the concentrated liquid chamber (15) and the spray chamber (16). A shut-off valve is provided on the connecting pipe (17). Both the pH sensor and the shut-off valve are connected to the control system.

3. The device according to claim 2, characterized in that, The spray chamber (16) is also equipped with a stirring shaft (18), and a stirring motor is provided at the bottom of the spray chamber (16). The stirring shaft (18) is connected to the output shaft of the stirring motor, and the stirring motor is connected to the control system.

4. The device according to claim 2, characterized in that, The nozzle (13) is a liquefaction nozzle.

5. The device according to claim 2, characterized in that, The gas-liquid separator (5) is also provided with multiple sets of baffle units. The multiple sets of baffle units are arranged from bottom to top between the gas inlet and the gas outlet of the gas-liquid separator (5). Each set of baffle units includes multiple first baffle plates (19-1) and second baffle plates (19-2) arranged vertically. The first baffle plate (19-1) is inclined. The inclination direction of the second baffle plate (19-2) is opposite to the inclination direction of the first baffle plate (19-1). The corresponding first baffle plate (19-1) and second baffle plate (19-2) are connected by a vertical plate (19-3). The two ends of the first baffle plate (19-1), the second baffle plate (19-2) and the vertical plate (19-3) are fixedly connected to the inner wall of the gas-liquid separator (5).

6. The device according to claim 2, characterized in that, A circulation pump is installed on the liquid circulation pipeline (20), and a level gauge is installed in the spray chamber (16). Both the circulation pump and the level gauge are connected to the control system.

7. The device according to claim 1, characterized in that, The top of the fine slag filter (1) is also provided with a gas collection hood (2), which is fixedly connected to the side support of the fine slag filter (1).

8. The device according to claim 7, characterized in that, A blower (4) is also provided between the gas collection hood (2) and the gas-liquid separator (5). The gas collection hood (2), the blower (4) and the gas-liquid separator (5) are connected in sequence by a blower pipe (3). A first shut-off valve is provided on the blower pipe (3) between the blower (4) and the gas-liquid separator (5).

9. The device according to claim 1, characterized in that, The outlet of the gas-liquid separator (5) is connected to the inlet of the activated carbon adsorption tank (9) via a connecting pipeline (8). A second shut-off valve is provided on the connecting pipeline (8). The drain outlet at the bottom of the gas-liquid separator (5) is connected to the fine slag filter tank (11) via a wastewater discharge pipe (6). A liquid level control valve is provided on the wastewater discharge pipe (6).

10. The device according to claim 1, characterized in that, A flow regulating valve is installed on the spray pipe (7).

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