Organic hazardous waste combustion flue gas purification system

Abstract

The utility model relates to the technical field of combustion waste gas treatment, in particular to an organic hazardous waste combustion flue gas purification system which absorbs heat in waste gas, can recycle heat in flue gas and improves the energy utilization rate. Comprising a chimney, a first exhaust fan, a heat exchange device, a flue gas purification device and a deacidification device, the input end of the first exhaust fan is connected with a pre-filtering assembly, the output end of the first exhaust fan is connected with the input end of the heat exchange device, the output end of the heat exchange device is connected with the flue gas purification device, and the output end of the heat exchange device is located in the flue gas purification device; the heat exchange device comprises an outer cylinder, an inner cylinder, a gas inlet pipe, a spiral flue, a liquid inlet pipe and a liquid outlet pipe, a pollution discharge mechanism is mounted in the flue gas purification device, the output end of the flue gas purification device is connected with the deacidification device, and the output end of the deacidification device is communicated with the chimney.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion waste gas treatment, in particular to an organic hazardous waste combustion fume purification system. Background Art

[0002] At present, according to the emission standards of flue gas, it is necessary to purify pollutants such as acidic gas, dust particles, dioxins and heavy metals in the flue gas generated by the incineration of hazardous waste. A hazardous waste incineration flue gas purification system proposed by prior art publication number CN103611399B includes a quenching device, the quenching device has a flue gas inlet and a flue gas outlet, the flue gas outlet of the quenching device is connected to the flue gas purification device through a pipeline, and the outlet of the flue gas purification device is connected to the chimney, characterized in that: the flue gas purification device specifically includes a dry reactor, a bag dust collector, and a wet scrubber, the flue gas outlet of the quenching device is connected to the flue gas inlet of the dry reactor, the flue gas outlet of the dry reactor is connected to the flue gas inlet of the bag dust collector, the flue gas outlet of the bag dust collector is connected to the flue gas inlet of the wet scrubber, and the flue gas outlet of the wet scrubber is connected to the chimney. However, quenching and cooling will not only waste the heat of the flue gas, but also increase the amount of flue gas, thereby increasing the cost of the back-end processing equipment, and the heat is not reasonably utilized, resulting in energy waste. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an organic hazardous waste combustion flue gas purification system which can absorb the heat in the exhaust gas, recycle the heat in the flue gas, and improve the energy utilization rate.

[0004] The utility model discloses a flue gas purification system for combustion of organic hazardous waste, comprising a chimney, a first exhaust fan, a heat exchange device, a flue gas purification device and a deacidification device, wherein the input end of the first exhaust fan is connected with a pre-filtering component, the output end of the first exhaust fan is connected with the input end of the heat exchange device, the output end of the heat exchange device is connected with the flue gas purification device, and the output end of the heat exchange device is located inside the flue gas purification device, a sewage discharge mechanism is installed inside the flue gas purification device, the output end of the flue gas purification device is connected with the deacidification device, and the output end of the deacidification device is communicated with the chimney; the first exhaust fan is started to extract the combustion exhaust gas, the exhaust gas is pre-filtered by the pre-filtering component, and then the exhaust gas is sent into the heat exchange device to absorb the heat in the exhaust gas, so that the heat in the exhaust gas can be recycled and utilized, and then the exhaust gas enters the flue gas purification device to wash the exhaust gas, and the oily substances and large particle substances in the exhaust gas will be separated from the exhaust gas, and then the exhaust gas enters the deacidification device to further neutralize the acidic gas in the exhaust gas, and after the exhaust gas reaches the prescribed emission standard, it is discharged into the atmosphere through the chimney at high altitude.

[0005] Preferably, the heat exchange device includes an outer cylinder, an inner cylinder, an air inlet pipe, a spiral flue, a liquid inlet pipe and a liquid outlet pipe. The inner cylinder is fixedly installed inside the outer cylinder, a heating chamber is formed between the outer cylinder and the inner cylinder, the spiral flue is installed in the heating chamber, the input end of the spiral flue is connected with the output end of the air inlet pipe, the air inlet pipe passes through the outer wall of the outer cylinder and is connected with the output end of the first exhaust fan, the liquid inlet pipe passes through the top end of the outer cylinder and is located inside the inner cylinder, and the output end of the liquid inlet pipe passes through the lower end of the side wall of the inner cylinder and is connected with the heating chamber, the output end of the liquid outlet pipe passes through the top end of the outer cylinder and is located inside the inner cylinder, and the output end of the liquid outlet pipe passes through the upper end of the side wall of the inner cylinder and is connected with the heating chamber; the first exhaust fan sends the exhaust gas into the spiral flue through the air inlet pipe, and adds heat exchange liquid into the heating chamber through the liquid inlet pipe. The heat exchange liquid is in full contact with the spiral flue to exchange heat with the flue gas. The heated heat exchange liquid is input into the heating chamber through the liquid outlet pipe, so that the heat exchange liquid circulates in the heating chamber to absorb the heat in the exhaust gas, thereby recycling the heat in the flue gas.

[0006] Preferably, the pre-filtration component includes a filter box, a filter screen and a sealing plate. The output end of the filter box is connected to the input end of the first exhaust fan. An air inlet head is provided at the left end of the filter box. The filter screen is inserted into the interior of the filter box, and the top of the filter screen is installed on the top of the filter box through the sealing plate. The first exhaust fan is started to extract the interior of the filter box, and the exhaust gas is input into the filter box. The exhaust gas is pre-filtered through the filter screen to reduce large particles in the smoke and avoid blockage of the spiral flue.

[0007] Preferably, the flue gas purification device includes a purification box, a second air intake pipe, a distribution pipe, a plurality of air intake branches, a liquid adding head, a liquid level meter and a dry filter, the input end of the second air intake pipe passes through the outer wall of the outer cylinder and is connected to the output end of the spiral flue, the output end of the second air intake pipe passes through the outer wall of the purification box and is connected to the distribution pipe, the lower part of the distribution pipe is evenly connected to the plurality of air intake branches, the rear wall of the purification box is connected to the liquid adding head, the liquid level meter is fixedly installed on the inner wall of the purification box, and the dry filter is fixedly installed on the upper part of the inner wall of the purification box , and the dry filter is located above the liquid adding head and the liquid level gauge; water washing liquid is added into the purification box through the liquid adding head, and the liquid level of the water washing liquid is detected by the liquid level gauge. The flue gas is input into the second air intake pipe through the spiral flue, and then the flue gas is distributed and input into the air intake branch pipe through the distribution pipe, and output into the water washing liquid through the air intake branch pipe, so that the oily substances and large particles in the exhaust gas will be separated from the exhaust gas, and the washed exhaust gas is discharged upward and passes through the dry filter to dry the exhaust gas and filter some small particles.

[0008] Preferably, the sewage discharge mechanism includes a V-shaped guide plate, a rotating rod, a driving motor, a spiral conveying blade and a sewage pipe. The V-shaped guide plate is fixedly mounted on the lower part of the inner wall of the purification box, and the lower part of the V-shaped guide plate is arranged in an arc shape. The rotating rod is rotatably mounted on the middle part of the V-shaped guide plate, and the rear part of the rotating rod passes through the rear part of the purification box and is connected to the output end of the driving motor. A spiral conveying blade is mounted on the outer wall of the rotating rod, and the lower part of the spiral conveying blade contacts the arc-shaped bottom of the V-shaped guide plate. The input end of the sewage pipe is connected to the front end of the V-shaped guide plate, and a sewage valve is arranged on the sewage pipe; oily substances and large particulate substances will be separated from the exhaust gas and then float down. After falling on the top of the V-shaped guide plate, they are guided to the bottom for collection. After long-term use, the sewage valve is opened, and the driving motor is started at the same time to drive the rotating rod to rotate. The rotating rod drives the spiral conveying blade to rotate, pushes the impurities forward, and discharges them outward through the sewage pipe to prevent the impurities from accumulating at the bottom of the V-shaped guide plate.

[0009] Preferably, the deacidification device includes a deacidification cylinder, a third air inlet pipe, a second exhaust fan, a dispersion head, a vertical pipe, multiple groups of delivery branches, multiple spray ring pipes, multiple nozzles, a high-pressure liquid pump and an alkali liquid tank. A drain pipe is provided at the front end of the lower part of the deacidification cylinder. The input end of the third air inlet pipe is installed at the top of the purification box, and the input end of the third air inlet pipe is connected to the upper part of the dry filter. The output end of the third air inlet pipe passes through the lower end side wall of the deacidification cylinder and extends into the interior of the deacidification cylinder and is installed with a dispersion head. The second exhaust fan is installed on the third air inlet pipe. The vertical pipe is located inside the deacidification cylinder. Multiple groups of delivery branches are evenly spaced and installed on the vertical pipe. The lengths of the multiple groups of delivery branches are gradually reduced, and the output ends of the delivery branches are connected to the bottom wall of the deacidification cylinder. A spray ring pipe is connected, and a plurality of nozzles are evenly installed at the lower part of the spray ring pipe. The upper input end of the vertical pipe passes through the side wall of the deacidification cylinder and is connected to the output end of the high-pressure liquid pump. The high-pressure liquid pump is installed on the top of the alkali liquid tank, and the input end of the high-pressure liquid pump is connected to the inside of the alkali liquid tank. The second exhaust fan is started to extract the treated flue gas from the upper part of the purification box through the third air inlet pipe, and evenly dispersed into the deacidification cylinder through the dispersion head. The high-pressure liquid pump is started to extract the alkali liquid in the alkali liquid tank, and then input it into the vertical pipe, and evenly transported to the spray ring pipe through the delivery branch pipe, and evenly sprayed into the deacidification cylinder through the nozzle, so that the alkali liquid is evenly in contact with the exhaust gas, and the acid gas in the flue gas is further neutralized.

[0010] Preferably, it also includes a fourth air inlet pipe and a third air exhaust fan. The upper part of the deacidification cylinder is arranged to be cone-shaped. The input end of the fourth air inlet pipe is connected with the upper part of the deacidification cylinder, and the output end of the fourth air inlet pipe is connected with the lower part of the chimney. The third air exhaust fan is installed on the fourth air inlet pipe. The flue gas treated in the deacidification cylinder floats upward, and the flue gas is gathered and concentrated by the upper cone of the deacidification cylinder. The third air exhaust fan is started to extract the flue gas through the fourth air inlet pipe, input it into the lower part of the chimney, and discharged into the atmosphere through the chimney at high altitude.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the first exhaust fan is started to extract the combustion exhaust gas, the exhaust gas is pre-filtered through the pre-filter component, and then sent to the heat exchange device to absorb the heat in the exhaust gas, so that the heat in the flue gas can be recycled and utilized, and then the flue gas enters the flue gas purification device to wash the flue gas, and the oily substances and large particles in the exhaust gas will be separated from the exhaust gas, and then the exhaust gas enters the deacidification device to further neutralize the acidic gas in the flue gas. After the flue gas reaches the prescribed emission standards, it is discharged into the atmosphere through the chimney at high altitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a front structural schematic diagram of the utility model;

[0014] Figure 3 It is a left-side structural schematic diagram of the utility model;

[0015] Figure 4 It is a front cross-sectional structural schematic diagram of the utility model;

[0016] Figure 5 It is a right side cross-sectional structural schematic diagram of the utility model;

[0017] Markings in the attached figure: 1. chimney; 2. first exhaust fan; 3. outer cylinder; 4. inner cylinder; 5. air inlet pipe; 6. spiral flue; 7. liquid inlet pipe; 8. liquid outlet pipe; 9. filter box; 10. filter screen; 11. sealing plate; 12. purification box; 13. second air inlet pipe; 14. distribution pipe; 15. air inlet branch pipe; 16. liquid adding head; 17. liquid level meter; 18. dry filter; 19. V-shaped guide plate; 20. rotating rod; 21. driving motor; 22. spiral conveying blade; 23. sewage pipe; 24. deacidification cylinder; 25. third air inlet pipe; 26. second exhaust fan; 27. dispersion head; 28. vertical pipe; 29. ​​conveying branch pipe; 30. spray ring pipe; 31. nozzle; 32. high-pressure liquid pump; 33. alkali liquid tank; 34. fourth air inlet pipe; 35. third exhaust fan. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the inner cylinder 4 is fixedly installed inside the outer cylinder 3, a heating chamber is formed between the outer cylinder 3 and the inner cylinder 4, a spiral flue 6 is installed in the heating chamber, the input end of the spiral flue 6 is connected to the output end of the air inlet pipe 5, the air inlet pipe 5 passes through the outer wall of the outer cylinder 3 and is connected to the output end of the first exhaust fan 2, the liquid inlet pipe 7 passes through the top end of the outer cylinder 3 and is located inside the inner cylinder 4, and the output end of the liquid inlet pipe 7 passes through the lower end of the side wall of the inner cylinder 4 and is connected to the heating chamber, and the output end of the liquid outlet pipe 8 passes through the top end of the outer cylinder 3 and is located inside the inner cylinder 4 The output end of the liquid outlet pipe 8 passes through the upper end of the side wall of the inner tube 4 and is connected to the heating chamber. The input end of the second air inlet pipe 13 passes through the outer wall of the outer tube 3 and is connected to the output end of the spiral flue 6. The output end of the second air inlet pipe 13 passes through the outer wall of the purification box 12 and is connected to the distribution pipe 14. The lower part of the distribution pipe 14 is evenly connected to a plurality of air inlet branches 15. The rear wall of the purification box 12 is connected to a liquid adding head 16. The liquid level meter 17 is fixedly installed on the inner wall of the purification box 12. The dry filter 18 is fixedly installed in the purification box. The upper part of the inner wall of the deacidification cylinder 12, and the dry filter 18 is located above the liquid adding head 16 and the liquid level meter 17, the lower front end of the deacidification cylinder 24 is provided with a drain pipe, the input end of the third air inlet pipe 25 is installed at the top of the purification box 12, and the input end of the third air inlet pipe 25 is connected with the upper part of the dry filter 18, the output end of the third air inlet pipe 25 passes through the lower end side wall of the deacidification cylinder 24 and extends into the interior of the deacidification cylinder 24 and is installed with a dispersion head 27, and the third air inlet pipe 25 is installed with a second exhaust fan 26, a vertical pipe 28 Located inside the deacidification cylinder 24, a plurality of groups of delivery branch pipes 29 are evenly installed on the vertical pipe 28, and the lengths of the plurality of delivery branch pipes 29 are gradually reduced, the output end of the delivery branch pipe 29 is connected to a spray ring pipe 30, and a plurality of nozzles 31 are evenly installed at the lower part of the spray ring pipe 30, the upper input end of the vertical pipe 28 passes through the side wall of the deacidification cylinder 24 and is connected to the output end of a high-pressure liquid pump 32, the high-pressure liquid pump 32 is installed on the top of an alkali liquid tank 33, and the input end of the high-pressure liquid pump 32 is communicated with the inside of the alkali liquid tank 33;

[0020] The first exhaust fan 2 delivers the exhaust gas into the spiral flue 6 through the air inlet pipe 5, and adds heat exchange liquid into the heating chamber through the liquid inlet pipe 7. The heat exchange liquid contacts the spiral flue 6 completely to exchange heat with the flue gas. The heated heat exchange liquid is input into the heating chamber through the liquid outlet pipe 8, so that the heat exchange liquid circulates in the heating chamber to absorb the heat in the exhaust gas, and the heat in the flue gas can be recycled. The water washing liquid is added into the purification box 12 through the liquid adding head 16, and the liquid level of the water washing liquid is detected by the liquid level meter 17. The flue gas is input into the second air inlet pipe 13 through the spiral flue 6, and then the flue gas is distributed and input into the air inlet branch pipe 15 through the distribution pipe 14, and then output to the water washing liquid through the air inlet branch pipe 15. The oily substances and large particles in the exhaust gas will be separated from the exhaust gas, and the washed exhaust gas will be discharged upward and pass through the dry filter 18 to dry the exhaust gas and filter some small particles. The second exhaust fan 26 is started to extract the treated flue gas from the upper part of the purification box 12 through the third air inlet pipe 25, and the flue gas is evenly dispersed into the deacidification cylinder 24 through the dispersion head 27. The high-pressure liquid pump 32 is started to extract the alkali liquid in the alkali liquid tank 33, and then input it into the vertical pipe 28, and evenly transported to the spray ring pipe 30 through the delivery branch pipe 29, and evenly sprayed into the deacidification cylinder 24 through the nozzle 31, so that the alkali liquid is evenly in contact with the exhaust gas, and the acid gas in the flue gas is further neutralized.

[0021] like Figures 3 to 5 As shown, the output end of the filter box 9 is connected to the input end of the first exhaust fan 2, the left end of the filter box 9 is provided with an air intake head, the filter screen 10 is inserted into the inside of the filter box 9, and the top end of the filter screen 10 is installed on the top of the filter box 9 through the sealing plate 11, the V-shaped guide plate 19 is fixedly installed on the lower part of the inner wall of the purification box 12, and the lower part of the V-shaped guide plate 19 is set to an arc shape, the rotating rod 20 is rotatably installed in the middle part of the V-shaped guide plate 19, and the rear part of the rotating rod 20 passes through the rear part of the purification box 12 and connects with the driving motor 21 The output end of the rotating rod 20 is connected, a spiral conveying blade 22 is installed on the outer wall of the rotating rod 20, and the lower part of the spiral conveying blade 22 is in contact with the arc bottom of the V-shaped guide plate 19, the input end of the sewage pipe 23 is connected with the front end of the V-shaped guide plate 19, and a sewage valve is arranged on the sewage pipe 23. The upper part of the deacidification cylinder 24 is set to be conical, the input end of the fourth air inlet pipe 34 is connected with the upper part of the deacidification cylinder 24, the output end of the fourth air inlet pipe 34 is connected with the lower part of the chimney 1, and the fourth air inlet pipe 34 is installed with a third air exhauster 35;

[0022] Start the first exhaust fan 2 to extract the inside of the filter box 9, and the exhaust gas is input into the filter box 9. The exhaust gas is pre-filtered through the filter screen 10 to reduce large particles in the flue gas and avoid clogging the spiral flue 6. The oily substances and large particles will be separated from the exhaust gas and fall downward. After falling on the top of the V-shaped guide plate 19, they are guided to the bottom and gathered. After long-term use, the drain valve is opened, and the drive motor 21 is started to drive the rotating rod 20 to rotate. The rotating rod 20 drives the spiral conveying blade 22 to rotate, pushing the impurities forward and discharging them outward through the drain pipe 23 to prevent impurities from accumulating at the bottom of the V-shaped guide plate 19. The flue gas treated in the deacidification cylinder 24 floats upward, and the flue gas is gathered and concentrated through the cone. The third exhaust fan 35 is started to extract the flue gas through the fourth air inlet pipe 34, input it to the lower part of the chimney 1, and discharged into the atmosphere through the chimney 1 at high altitude.

[0023] like Figures 1 to 5As shown, the utility model is a flue gas purification system for combustion of organic hazardous waste. When it is working, the first exhaust fan 2 is started to extract the inside of the filter box 9, the exhaust gas is input into the filter box 9, and the exhaust gas is pre-filtered by the filter screen 10 to reduce large particles in the flue gas. The first exhaust fan 2 sends the exhaust gas into the spiral flue 6 through the air inlet pipe 5, and the heat exchange liquid is added into the heating chamber through the liquid inlet pipe 7. The heat exchange liquid is in full contact with the spiral flue 6 to exchange heat with the flue gas. The heated heat exchange liquid is input into the heating chamber through the liquid outlet pipe 8, so that the heat exchange liquid in the heating chamber is heated. The heat in the exhaust gas is absorbed and recycled. The water washing liquid is added into the purification box 12 through the liquid adding head 16. The liquid level of the water washing liquid is detected by the liquid level meter 17. The exhaust gas is input into the second air intake pipe 13 through the spiral flue 6, and then the exhaust gas is distributed and input into the air intake branch pipe 15 through the distribution pipe 14. The exhaust gas is output to the water washing liquid through the air intake branch pipe 15, so that the oily substances and large particles in the exhaust gas will be separated from the exhaust gas. The washed exhaust gas is discharged upward and passes through the dry filter 18 to dry and Filter some small particles, start the second exhaust fan 26 to extract the treated flue gas from the upper part of the purification box 12 through the third air inlet pipe 25, and evenly disperse it into the deacidification cylinder 24 through the dispersion head 27, start the high-pressure liquid pump 32 to extract the alkali solution in the alkali solution tank 33, and then input it into the vertical pipe 28, and evenly transport it to the spray ring pipe 30 through the delivery branch pipe 29, and evenly spray it into the deacidification cylinder 24 through the nozzle 31, so that the alkali solution is evenly in contact with the exhaust gas, and the acid gas in the flue gas is further neutralized. The treated flue gas in the deacidification cylinder 24 The smoke will drift upwards and be gathered and concentrated through a cone. The third vacuum fan 35 will be started to extract the smoke through the fourth air inlet pipe 34, and the smoke will be input into the lower part of the chimney 1 and discharged into the atmosphere through the chimney 1. The oily substances and large particles will be separated from the exhaust gas and will float downwards. After falling on the top of the V-shaped guide plate 19, they will be guided to the bottom and gathered. After long-term use, the drain valve will be opened and the drive motor 21 will be started to drive the rotating rod 20 to rotate. The rotating rod 20 will drive the spiral conveying blade 22 to rotate, pushing the impurities forward and discharging them outward through the drain pipe 23.

[0024] The first exhaust fan 2, liquid level meter 17, dry filter 18, drive motor 21, second exhaust fan 26, dispersion head 27 and third exhaust fan 35 of the organic hazardous waste combustion flue gas purification system of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An organic hazardous waste combustion flue gas purification system, characterized in that: The invention comprises a chimney (1), a first exhaust fan (2), a heat exchange device, a flue gas purification device and a deacidification device, wherein the input end of the first exhaust fan (2) is connected to a pre-filter assembly, the output end of the first exhaust fan (2) is connected to the input end of the heat exchange device, the output end of the heat exchange device is connected to the flue gas purification device, and the output end of the heat exchange device is located inside the flue gas purification device, a sewage discharge mechanism is installed inside the flue gas purification device, the output end of the flue gas purification device is connected to the deacidification device, and the output end of the deacidification device is connected to the chimney (1).

2. The organic hazardous waste combustion flue gas purification system according to claim 1, characterized in that: The heat exchange device comprises an outer cylinder (3), an inner cylinder (4), an air inlet pipe (5), a spiral flue (6), a liquid inlet pipe (7) and a liquid outlet pipe (8). The inner cylinder (4) is fixedly mounted inside the outer cylinder (3), a heating chamber is formed between the outer cylinder (3) and the inner cylinder (4), the spiral flue (6) is mounted inside the heating chamber, the input end of the spiral flue (6) is connected to the output end of the air inlet pipe (5), the air inlet pipe (5) passes through the outer wall of the outer cylinder (3) and is connected to the output end of the first exhaust fan (2), the liquid inlet pipe (7) passes through the top end of the outer cylinder (3) and is located inside the inner cylinder (4), and the output end of the liquid inlet pipe (7) passes through the lower end of the side wall of the inner cylinder (4) and is in communication with the heating chamber, the output end of the liquid outlet pipe (8) passes through the top end of the outer cylinder (3) and is located inside the inner cylinder (4), and the output end of the liquid outlet pipe (8) passes through the upper end of the side wall of the inner cylinder (4) and is in communication with the heating chamber.

3. The organic hazardous waste combustion flue gas purification system according to claim 2, characterized in that: The pre-filter assembly comprises a filter box (9), a filter screen (10) and a sealing plate (11); the output end of the filter box (9) is connected to the input end of the first exhaust fan (2); an air inlet head is arranged at the left end of the filter box (9); the filter screen (10) is inserted into the interior of the filter box (9), and the top end of the filter screen (10) is mounted on the top of the filter box (9) through the sealing plate (11).

4. The organic hazardous waste combustion flue gas purification system according to claim 2, characterized in that: The flue gas purification device comprises a purification box (12), a second air intake pipe (13), a distribution pipe (14), a plurality of air intake branch pipes (15), a liquid adding head (16), a liquid level meter (17) and a dry filter (18); the input end of the second air intake pipe (13) passes through the outer wall of the outer cylinder (3) and is connected to the output end of the spiral flue (6); the output end of the second air intake pipe (13) passes through the outer wall of the purification box (12) and is connected to the distribution pipe (14); the lower part of the distribution pipe (14) is evenly connected to the plurality of air intake branch pipes (15); the rear wall of the purification box (12) is connected to the liquid adding head (16); the liquid level meter (17) is fixedly mounted on the inner wall of the purification box (12); the dry filter (18) is fixedly mounted on the upper part of the inner wall of the purification box (12); and the dry filter (18) is located above the liquid adding head (16) and the liquid level meter (17).

5. The organic hazardous waste combustion flue gas purification system according to claim 4, characterized in that: The sewage discharge mechanism comprises a V-shaped guide plate (19), a rotating rod (20), a driving motor (21), a spiral conveying blade (22) and a sewage discharge pipe (23). The V-shaped guide plate (19) is fixedly mounted on the lower part of the inner wall of the purification box (12), and the lower part of the V-shaped guide plate (19) is arranged in an arc shape. The rotating rod (20) is rotatably mounted on the middle part of the V-shaped guide plate (19). The rear part of the rotating rod (20) passes through the rear part of the purification box (12) and is connected to the output end of the driving motor (21). The spiral conveying blade (22) is mounted on the outer wall of the rotating rod (20), and the lower part of the spiral conveying blade (22) contacts the arc-shaped bottom of the V-shaped guide plate (19). The input end of the sewage discharge pipe (23) is communicated with the front end of the V-shaped guide plate (19), and a sewage discharge valve is arranged on the sewage discharge pipe (23).

6. The organic hazardous waste combustion flue gas purification system according to claim 4, characterized in that: The deacidification device comprises a deacidification cylinder (24), a third air inlet pipe (25), a second exhaust fan (26), a dispersion head (27), a vertical pipe (28), a plurality of delivery branch pipes (29), a plurality of spray ring pipes (30), a plurality of nozzles (31), a high-pressure liquid pump (32) and an alkali liquid tank (33). A discharge pipe is arranged at the front end of the lower part of the deacidification cylinder (24). The input end of the third air inlet pipe (25) is installed at the top of the purification box (12), and the input end of the third air inlet pipe (25) is connected to the upper part of the dry filter (18). The output end of the third air inlet pipe (25) passes through the lower end side wall of the deacidification cylinder (24) and extends into the interior of the deacidification cylinder (24) and is installed with the dispersion head (27). A second exhaust fan (26) is installed on the third air inlet pipe (25). The vertical pipe (28) is located inside the deacidification cylinder (24). A plurality of groups of delivery branch pipes (29) are evenly spaced and installed on the vertical pipe (28). The lengths of the plurality of delivery branch pipes (29) gradually decrease. The output ends of the delivery branch pipes (29) are connected to a spraying ring pipe (30). A plurality of nozzles (31) are evenly installed at the bottom of the spraying ring pipe (30). The upper input end of the vertical pipe (28) passes through the side wall of the deacidification cylinder (24) and is connected to the output end of a high-pressure liquid pump (32). The high-pressure liquid pump (32) is installed on the top of an alkali liquid tank (33), and the input end of the high-pressure liquid pump (32) is in communication with the inside of the alkali liquid tank (33).

7. The organic hazardous waste combustion flue gas purification system according to claim 6, characterized in that: It also includes a fourth air inlet pipe (34) and a third air exhauster (35); the upper portion of the deacidification cylinder (24) is arranged in a conical shape; the input end of the fourth air inlet pipe (34) is connected to the upper portion of the deacidification cylinder (24); the output end of the fourth air inlet pipe (34) is connected to the lower portion of the chimney (1); and the third air exhauster (35) is installed on the fourth air inlet pipe (34).

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