Multistage filtering device for purifying waste gas in fireproof PP production

Abstract

The utility model relates to waste gas purification technical field, concretely is fire -proof PP production waste gas purification multistage filter device, including granule circulating cooling component, granule lead out pipe, filter granule storage tank, waste gas lead -in pipe and loop back pipe, the downside of granule circulating cooling component is provided with sewage output pipe, the downside of sewage output pipe is provided with sewage filter component, the upside of sewage filter component is provided with exhaust pipe, one end of exhaust pipe is provided with gas filter cartridge. The utility model discloses filter granule storage tank inside filter granule to waste gas cooling and filter, reduce the temperature in waste gas, through the water spray head to the filter granule that circulates and sprays water, through the water liquid adsorption pollutant in waste gas, and to filter granule cooling, cleaning, keep the cooling, filter effect of filter granule, filter granule storage tank, granule circulating cooling component and gas filter cartridge to waste gas multistage filtration, improve the degree of completeness of waste gas purification.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, specifically a multi-stage filtration device for purifying waste gas from fireproof PP production. Background Technology

[0002] PP, or polypropylene, is a semi-crystalline thermoplastic polymer made from propylene monomers through an addition polymerization reaction. The waste gas generated during the PP production process mainly comes from polymerization reaction, monomer recovery, drying and other stages. It contains flammable, explosive and toxic components such as propylene, propane, ethylene and VOCs. Waste gas purification is not only an environmental protection requirement, but also an important measure to achieve resource recovery and reduce safety risks.

[0003] Chinese patent discloses a multi-stage filtration device for purifying chemical production waste gas (publication number CN215388379U). This patented technology uses an integrated filtration method to perform multi-stage filtration of chemical waste gas, which not only purifies the waste gas and avoids environmental pollution during discharge, but also saves costs and avoids wasting a lot of time during operation. However, the aforementioned multi-stage filtration device directly filters the waste gas with water. The high temperature inside the waste gas causes it to be discharged along with the evaporated water, affecting the uniformity of the mixture between the waste gas and water, which is detrimental to the purification efficiency. Relying entirely on water purification results in a low degree of purification, which is not conducive to the completeness of waste gas purification. Furthermore, the filtered particulate matter is inconvenient to remove, which is detrimental to the ease of use. Therefore, those skilled in the art have provided a fireproof PP production waste gas purification multi-stage filtration device to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage filtration device for purifying exhaust gas from fire-resistant PP production, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-stage filtration device for purifying exhaust gas from fire-resistant PP production includes a particle circulation cooling component, a particle outlet pipe, a filter particle storage box, an exhaust gas inlet pipe, and a circulation pipe. The particle outlet pipe is located at one end of the particle circulation cooling component, the filter particle storage box is located at the upper end of the particle outlet pipe, the exhaust gas inlet pipe is located above the filter particle storage box, and the circulation pipe is located at one upper end of the filter particle storage box. A wastewater outlet pipe is located below the particle circulation cooling component, and a wastewater filtration component is located below the wastewater outlet pipe. The wastewater filtration component has an exhaust pipe on its upper side, a gas filter cylinder at one end of the exhaust pipe, an exhaust pump on one side of the gas filter cylinder, a water outlet pipe on its lower side, a spray nozzle on one side of the particle outlet pipe, and a particle circulation cooling component including a circulation box. A conveyor belt is located at the lower end of the circulation box, a particle baffle is located near the conveyor belt, a temporary storage box is located on one side of the circulation box, and a spiral conveyor pipe is located below the temporary storage box.

[0007] As a further embodiment of this utility model: the sewage filtration component includes a filter box, a water pump is provided on the lower side of the filter box, a filter plate is provided at one end of the water pump, a cleaning door is provided on one side of the filter box above the filter plate.

[0008] As a further embodiment of this utility model: the output end of the exhaust gas inlet pipe is connected to the upper end of the filter particle storage box, the lower end of the filter particle storage box is connected to the input end of the particle outlet pipe, the lower end of the particle outlet pipe is located inside the circulation box near the conveyor belt, the lower end of the circulation box is connected to the upper end of the sewage outlet pipe, the lower end of the sewage outlet pipe is connected to the upper end of the sewage filter component, the lower end of the sewage filter component is connected to the input end of the water outlet pipe, the output end of the water outlet pipe is connected to the input end of the spray head, and the output end of the spray head is connected to the upper end of the particle outlet pipe.

[0009] As a further embodiment of this utility model: one end of the particle circulation cooling component is connected to the upper end of the temporary storage box, the lower end of the temporary storage box is connected to the input end of the spiral conveying pipe, the output end of the spiral conveying pipe is connected to the input end of the circulation pipe, the output end of the circulation pipe is connected to the upper end of the filter particle storage box, and the interior of the filter particle storage box is filled with activated carbon particles.

[0010] As a further embodiment of this utility model: the upper end of the sewage filtration component is connected to the input end of the exhaust pipe, the output end of the exhaust pipe is connected to the input end of the gas filter cylinder, and the output end of the gas filter cylinder is connected to the input end of the exhaust pump.

[0011] As a further embodiment of this utility model: the lower end of the filter box is connected to the input end of the water pump, the output end of the water pump is connected to the input end of the water pump, the output end of the water pump is connected to the input end of the exhaust pipe, and the upper end of the filter box is connected to the input end of the circulation pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The fireproof PP production waste gas purification multi-stage filtration device of this utility model has filter particles inside the filter particle storage box that cool and filter the waste gas, reducing the temperature inside the waste gas. Water is sprayed onto the circulating filter particles through a water spray head, and the water adsorbs pollutants in the waste gas and cools and cleans the filter particles, maintaining the cooling and filtration effect of the filter particles, improving the uniformity of the mixture of waste gas and water, and thus improving the purification efficiency of the waste gas.

[0014] 2. The filter particle storage box, particle circulation cooling component and gas filter cartridge perform multi-stage filtration of exhaust gas, improving the completeness of exhaust gas purification. The wastewater filter component circulates water and filters the water, improving the ease of removing particulate matter from the exhaust gas and enhancing the ease of use. Attached Figure Description

[0015] Figure 1 A schematic diagram of a multi-stage filtration device for purifying exhaust gas from fire-resistant PP production.

[0016] Figure 2 Perspective view of a multi-stage filtration device for purifying exhaust gas from fire-resistant PP production;

[0017] Figure 3 A perspective view of the particle circulation cooling component in a multi-stage filtration device for purifying exhaust gas from fire-resistant PP production.

[0018] Figure 4 A perspective view of the wastewater filtration components in a multi-stage filtration device for purifying exhaust gas from fire-resistant PP production.

[0019] In the diagram: 1. Particle circulation cooling component; 2. Particle outlet pipe; 3. Filtered particle storage box; 4. Exhaust gas inlet pipe; 5. Circulation pipe; 6. Sewage outlet pipe; 7. Sewage filter component; 8. Exhaust pipe; 9. Gas filter cartridge; 10. Exhaust pump; 11. Water outlet pipe; 12. Water spray head; 13. Circulation box; 14. Conveyor belt; 15. Particle baffle; 16. Temporary storage box; 17. Spiral conveyor pipe; 18. Filter box; 19. Water pump; 20. Water pump; 21. Filter plate; 22. Cleaning gate. Detailed Implementation

[0020] Please see Figures 1-4In this embodiment of the utility model, the multi-stage filtration device for purifying exhaust gas from fireproof PP production includes a particle circulation cooling component 1, a particle outlet pipe 2, a filter particle storage box 3, an exhaust gas inlet pipe 4, and a circulation pipe 5. The particle outlet pipe 2 is located at one end of the particle circulation cooling component 1, the filter particle storage box 3 is located at the upper end of the particle outlet pipe 2, the exhaust gas inlet pipe 4 is located on the upper side of the filter particle storage box 3, and the circulation pipe 5 is located at one end of the upper side of the filter particle storage box 3. A wastewater outlet pipe 6 is provided on the lower side of the particle circulation cooling component 1, a wastewater filter component 7 is provided on the lower side of the wastewater outlet pipe 6, an exhaust pipe 8 is provided on the upper side of the wastewater filter component 7, and a gas filter cylinder 9 is provided at one end of the exhaust pipe 8. An exhaust pump 10 is installed. A water outlet pipe 11 is provided on the lower side of the sewage filter component 7. A water spray head 12 is provided on one side of the particle outlet pipe 2. The particle circulation cooling component 1 includes a circulation box 13. A conveyor belt 14 is provided at the lower end of the circulation box 13. A particle baffle 15 is provided inside the circulation box 13 near the conveyor belt 14. A temporary storage box 16 is provided on one side of the circulation box 13. A spiral conveyor pipe 17 is provided on the lower side of the temporary storage box 16. The output end of the exhaust gas inlet pipe 4 is connected to the upper end of the filter particle storage box 3. The lower end of the filter particle storage box 3 is connected to the input end of the particle outlet pipe 2. The lower end of the particle outlet pipe 2 is located inside the circulation box 13 near the conveyor belt 14. The lower end of 13 is connected to the upper end of the sewage outlet pipe 6. The lower end of the sewage outlet pipe 6 is connected to the upper end of the sewage filter component 7. The lower end of the sewage filter component 7 is connected to the input end of the water outlet pipe 11. The output end of the water outlet pipe 11 is connected to the input end of the spray head 12. The output end of the spray head 12 is connected to the upper end of the particle outlet pipe 2. One end of the particle circulation cooling component 1 is connected to the upper end of the temporary storage box 16. The lower end of the temporary storage box 16 is connected to the input end of the spiral conveying pipe 17. The output end of the spiral conveying pipe 17 is connected to the input end of the circulation pipe 5. The output end of the circulation pipe 5 is connected to the upper end of the filter particle storage box 3. The filter particle storage box 3 is filled with activated carbon particles. The upper end of the sewage filter component 7... The end of the exhaust pipe 8 is connected to the input end of the exhaust pipe 8, the output end of the exhaust pipe 8 is connected to the input end of the gas filter cartridge 9, and the output end of the gas filter cartridge 9 is connected to the input end of the exhaust pump 10. First, clean water is added to the inside of the wastewater filter component 7, and the exhaust gas inlet pipe 4 is connected to the fireproof PP production exhaust gas outlet pipe. Then, the exhaust gas is introduced into the inside of the filter particle storage box 3 through the exhaust gas inlet pipe 4. The activated carbon particles inside the filter particle storage box 3 cool the exhaust gas and filter the impurities inside. After filtration, the activated carbon particles inside the filter particle storage box 3 and the water inside the gas inlet particle outlet pipe 2 are connected to the inside of the wastewater filter component 7. The water inside the wastewater filter component 7 is introduced into the inside of the spray head 12 through the water outlet pipe 11. The spray head 12 introduces the water into the inside of the particle outlet pipe 2.The activated carbon particles and gas inside the particle outlet pipe 2 are cooled, and pollutants in the gas are adsorbed and cleaned. The activated carbon particles and gas are then introduced into the particle circulation cooling component 1. The conveyor belt 14 transports the activated carbon particles to the temporary storage box 16 and introduces them into the temporary storage box 16. The particle baffle 15 prevents the activated carbon particles from falling into the lower end of the circulation box 13. The spiral conveyor pipe 17 guides the activated carbon particles inside the temporary storage box 16 into the temporary storage box 16. The activated carbon particles inside the temporary storage box 16 are circulated into the filter particle storage box 3. Gas and water are introduced into the sewage filter component 7 through the sewage outlet pipe 6. The sewage filter component 7 filters the water. The exhaust pump 10 operates, and the gas inside the filter box 18 is introduced into the gas filter cylinder 9 through the exhaust pipe 8. The gas filter cylinder 9 filters the gas and then discharges it.

[0021] exist Figure 2 , 4 In the wastewater filtration component 7, a filter box 18 is included. A water pump 20 is installed at one end of the filter box 18 and a filter plate 21 is installed at the lower end of the filter box 18. A cleaning door 22 is installed on one side of the filter box 18 above the filter plate 21. The lower end of the filter box 18 is connected to the inlet end of the water pump 19, and the outlet end of the water pump 19 is connected to the inlet end of the water pump 20. The outlet end of the water pump 20 is connected to the inlet end of the exhaust pipe 8. The upper end of the filter box 18 is connected to the inlet end of the circulation pipe 5. Clean water is added to the interior of the filter box 18, and the exhaust gas inlet pipe 4 is connected to the fireproof PP production exhaust gas outlet pipe. Then, the exhaust gas is introduced through the exhaust gas inlet pipe 4. The activated carbon particles are introduced into the filter particle storage box 3. The activated carbon particles inside the filter particle storage box 3 cool the exhaust gas and filter the impurities inside. After filtration, the activated carbon particles and gas inside the filter particle storage box 3 are introduced into the particle outlet pipe 2. The water pump 20 runs and draws water from the filter box 18 through the water pumping pipe 19. The water is introduced into the spray head 12 through the water outlet pipe 11. The spray head 12 introduces the water into the particle outlet pipe 2, cools the activated carbon particles and gas inside the particle outlet pipe 2, adsorbs pollutants in the gas, and cleans the activated carbon particles. The gas and water are introduced into the filter box 18 through the sewage outlet pipe 6. The filter plate 21 filters the water, and impurities are trapped on the upper side of the filter plate 21.

[0022] The working principle of this utility model is as follows: First, clean water is added to the inside of the filter box 18, and the exhaust gas inlet pipe 4 is connected to the fireproof PP production exhaust gas outlet pipe. Then, the exhaust gas is introduced into the inside of the filter particle storage box 3 through the exhaust gas inlet pipe 4. The activated carbon particles inside the filter particle storage box 3 cool the exhaust gas and filter the impurities inside. After filtration, the activated carbon particles inside the filter particle storage box 3 and the gas are introduced into the particle outlet pipe 2. The water pump 20 runs and draws water from the inside of the filter box 18 through the water outlet pipe 19. The water is introduced into the inside of the spray head 12 through the water outlet pipe 11. The spray head 12 introduces the water into the particle outlet pipe 2, which cools the activated carbon particles and the gas inside the particle outlet pipe 2, adsorbs pollutants in the gas, and cleans the activated carbon particles. Particles and gas are introduced into the particle circulation cooling component 1. The conveyor belt 14 transports the activated carbon particles to the temporary storage box 16 and introduces them into the temporary storage box 16. The particle baffle 15 prevents the activated carbon particles from falling into the lower end of the circulation box 13. The spiral conveyor pipe 17 operates to introduce the activated carbon particles inside the temporary storage box 16 into the temporary storage box 16. The activated carbon particles inside the temporary storage box 16 are circulated into the filter particle storage box 3. Gas and water are introduced into the filter box 18 through the sewage outlet pipe 6. The filter plate 21 filters the water, and impurities are trapped on the upper side of the filter plate 21. The exhaust pump 10 operates, and the gas inside the filter box 18 is introduced into the gas filter cylinder 9 through the exhaust pipe 8. The gas filter cylinder 9 filters the gas and discharges it after filtration.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage filtration device for purifying exhaust gas from fire-resistant PP production, comprising a particle circulation cooling component (1), a particle outlet pipe (2), a filter particle storage box (3), an exhaust gas inlet pipe (4), and a circulation pipe (5), wherein the particle outlet pipe (2) is located at one end of the particle circulation cooling component (1), the filter particle storage box (3) is located at the upper end of the particle outlet pipe (2), the exhaust gas inlet pipe (4) is located on the upper side of the filter particle storage box (3), and the circulation pipe (5) is located at one end of the upper side of the filter particle storage box (3), characterized in that, The particle circulating cooling component (1) is provided with a sewage output pipe (6) on its lower side, a sewage filter component (7) on its lower side, an exhaust pipe (8) on its upper side, a gas filter cylinder (9) on one end of the exhaust pipe (8), an exhaust pump (10) on one side of the gas filter cylinder (9), a water outlet pipe (11) on its lower side, a spray nozzle (12) on one side of the particle outlet pipe (2), the particle circulating cooling component (1) includes a circulating box (13), a conveyor belt (14) is provided at the lower end of the interior of the circulating box (13), a particle baffle (15) is provided at the position of the interior of the circulating box (13) near the conveyor belt (14), a temporary storage box (16) is provided on one side of the circulating box (13), and a spiral conveyor pipe (17) is provided on the lower side of the temporary storage box (16).

2. The multi-stage filtration device for purifying exhaust gas from fire-resistant PP production as described in claim 1, characterized in that, The wastewater filtration component (7) includes a filter box (18), a water pump (19) is provided on the lower side of the filter box (18), a water pump (20) is installed at one end of the water pump (19), a filter plate (21) is provided at the lower end of the interior of the filter box (18), and a cleaning door (22) is provided on one side of the filter box (18) above the filter plate (21).

3. The multi-stage filtration device for purifying exhaust gas from fire-resistant PP production as described in claim 1, characterized in that, The output end of the exhaust gas inlet pipe (4) is connected to the upper end of the filter particle storage box (3), the lower end of the filter particle storage box (3) is connected to the input end of the particle outlet pipe (2), the lower end of the particle outlet pipe (2) is located inside the circulation box (13) near the conveyor belt (14), the lower end of the circulation box (13) is connected to the upper end of the sewage outlet pipe (6), the lower end of the sewage outlet pipe (6) is connected to the upper end of the sewage filter component (7), the lower end of the sewage filter component (7) is connected to the input end of the water outlet pipe (11), the output end of the water outlet pipe (11) is connected to the input end of the spray head (12), and the output end of the spray head (12) is connected to the upper end of the particle outlet pipe (2).

4. The multi-stage filtration device for purifying exhaust gas from fire-resistant PP production as described in claim 1, characterized in that, One end of the particle circulation cooling component (1) is connected to the upper end of the temporary storage box (16), the lower end of the temporary storage box (16) is connected to the input end of the spiral conveying pipe (17), the output end of the spiral conveying pipe (17) is connected to the input end of the circulation pipe (5), the output end of the circulation pipe (5) is connected to the upper end of the filter particle storage box (3), and the interior of the filter particle storage box (3) is filled with activated carbon particles.

5. The multi-stage filtration device for purifying exhaust gas from fire-resistant PP production as described in claim 1, characterized in that, The upper end of the sewage filter component (7) is connected to the input end of the exhaust pipe (8), the output end of the exhaust pipe (8) is connected to the input end of the gas filter cylinder (9), and the output end of the gas filter cylinder (9) is connected to the input end of the exhaust pump (10).

6. The multi-stage filtration device for purifying exhaust gas from fire-resistant PP production as described in claim 2, characterized in that, The lower end of the filter box (18) is connected to the input end of the water pump (19), the output end of the water pump (19) is connected to the input end of the water pump (20), the output end of the water pump (20) is connected to the input end of the exhaust pipe (8), and the upper end of the filter box (18) is connected to the input end of the circulation pipe (5).

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