Nitrocotton waste gas pollution-free emission treatment and purification equipment and purification method thereof

Abstract

The invention discloses nitrocotton waste gas pollution-free emission treatment and purification equipment and a purification method thereof, and belongs to the technical field of waste gas treatment, waste gas can be filtered through filter holes, dust particles can be blocked by the filter holes, water can be sprayed to a filter cylinder from a plurality of nozzles and is in contact with the waste gas, and the waste gas is purified. Volatile organic compounds in waste gas are removed in a water absorption mode, sprayed water can directly impact the outside of the filter cartridge, the purpose of backflushing the filter holes is achieved, particle impurities and viscous substances in the filter holes can be flushed out, and the filter cartridge and the filter holes can be cleaned by the water in all directions in cooperation with continuous rotation of the filter cartridge. The purpose of automatically clearing the blockage of the filter holes is achieved, impurities are discharged from the discharge pipe after being flushed out of the filter holes, impurities and waste water can be discharged by opening the discharge valve outside the treatment box, and the treatment box is cleared under the condition that the equipment is not shut down, so that the service life of the equipment is prolonged, and efficient and stable purification treatment on waste gas is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to a nitrocotton waste gas pollution-free emission treatment and purification equipment and a purification method thereof. Background Technique

[0002] During the production process of nitrocotton, various waste gases are generated, including pollutants such as nitrogen oxides. The emission of these waste gases poses a serious threat to the environment and human health. Currently, the commonly used treatment technologies for the waste gases generated during the production process of nitrocotton include water absorption method, activated carbon adsorption method, catalytic oxidation method, etc.

[0003] During the adsorption process using activated carbon, since the activated carbon inside the equipment is in a static state, the adsorbate molecules only contact and are adsorbed on the surface of the activated carbon by relying on their own thermal motion. Without the assistance of external force, the adsorption rate of the adsorbate molecules on the adsorption sites on the surface of the activated carbon is slow, and the static activated carbon in the adsorption process will cause the adsorption capacity not to be fully utilized; moreover, during the waste gas treatment process, the paint dust particles in the waste gas will gradually adhere to the filter screen during the emission process. Over time, the paint dust layer will gradually thicken, resulting in the pores of the filter screen being blocked, thereby affecting the passage of gas. The organic compounds in the waste gas may be adsorbed on the filter screen and undergo a polymerization reaction to form a viscous substance, further exacerbating the blockage of the filter screen, and regular shutdown treatment is required, thus resulting in a short usage cycle of the equipment and being not conducive to the efficient and stable purification treatment of waste gas. Summary of the Invention

[0004] The purpose of the present invention is to provide a nitrocotton waste gas pollution-free emission treatment and purification equipment and a purification method thereof, so as to solve the problems proposed in the above background technique that the static activated carbon in the adsorption process will cause the adsorption capacity not to be fully utilized; moreover, during the waste gas treatment process, the paint dust particles in the waste gas will gradually adhere to the filter screen during the emission process. Over time, the paint dust layer will gradually thicken, resulting in the pores of the filter screen being blocked, and regular shutdown treatment is required, thus resulting in a short usage cycle of the equipment.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A pollution-free emission treatment and purification device for nitrocellulose waste gas, comprising a treatment tank. An air inlet component is connected to the bottom of the treatment tank. A support frame is fixed outside the air inlet component, and the support frame is fixed at the lower part of the inner wall of the treatment tank. The top end of the air inlet component is connected to an isolation component, and the isolation component is fixedly installed inside the treatment tank. Four connection pipes are respectively communicated at the four corners of the top of the treatment tank, and the top ends of the four connection pipes are communicated with a purification tank. The bottom of the purification tank is fixed on the treatment tank. A driving component is fixedly connected to one side of the treatment tank, and both ends of the driving component respectively penetrate and extend into the treatment tank and the purification tank. A diversion cavity is opened at the bottom inside the purification tank, and the top end of the connection pipe is communicated with the diversion cavity. Several diversion holes are opened at the top of the inner wall of the diversion cavity, and the diversion holes are communicated with the inside of the purification tank. A filter element is arranged above the purification tank, and a cover plate is arranged above the filter element. The cover plate is clamped on the top of the purification tank. A discharge pipe is installed through the middle of the cover plate, and the bottom end of the discharge pipe is communicated with the inside of the purification tank. A liquid guide component is fixed on one side of the treatment tank. A cavity is opened inside the side wall of the treatment tank, and the cavity is communicated with the end of the liquid guide component. Several nozzles are installed through the inner wall of the cavity, and several nozzles face the middle inside the treatment tank.

[0007] As a further solution of the present invention, the air inlet component includes an air inlet pipe, the air inlet pipe is installed through the bottom of the treatment tank, a bushing is sleeved on the top end of the air inlet pipe, the bushing is clamped at the bottom of the isolation component, the air inlet pipe is clamped in the middle of the support frame, and a one-way valve is installed at a position on the outer wall of the air inlet pipe close to the bottom of the treatment tank.

[0008] As a further solution of the present invention, the isolation component includes a bearing seat, the bearing seat is clamped at the lower part inside the treatment tank, a turntable is rotatably connected inside the bearing seat, a filter cylinder is fixedly connected to the turntable, several filter holes are opened on the outer wall of the filter cylinder, a limit sleeve is sleeved on the top of the filter cylinder, and the limit sleeve is fixed at the top of the inner wall of the treatment tank.

[0009] As a further solution of the present invention, an isolation cylinder is fixedly connected to the bottom inside the filter cylinder, the top end of the air inlet pipe is communicated with the inside of the isolation cylinder, the height of the isolation cylinder is lower than that of the filter cylinder, and a diversion cover is arranged above the isolation cylinder, and the diversion cover is designed as an inverted cone, the diversion cover is fixed at the top of the inner wall of the filter cylinder. A discharge pipe is arranged between the isolation cylinder and the inner wall of the filter cylinder, the discharge pipe is installed through the turntable, drainage holes are respectively opened on both sides of the turntable, and a discharge valve is arranged at the lower part of the outer wall of the treatment tank, and the discharge valve is communicated with the inside of the treatment tank.

[0010] As a further solution of the present invention, the driving assembly includes a motor fixed on the processing box. A driving gear is fixed on the output shaft of the motor. The driving gear is externally engaged with a driven gear. A fixed shaft is fixed in the middle of the driven gear. The fixed shaft is connected to the bottom of the purification box through a rotating sleeve. A connecting rod is fixed at the bottom end of the fixed shaft. The outer wall of the connecting rod is fixed to the inner wall of the isolation cylinder through a plurality of support rods.

[0011] As a further solution of the present invention, a spiral blade is fixed on the outer wall of the fixed shaft. The spiral blade is arranged in the purification box and above the diversion holes. The bottom of the inner wall of the purification box is designed as an inverted cone. A plurality of heat dissipation holes are opened below the outer wall of the purification box. The top end of the fixed shaft penetrates through the bottom of the purification box and three stirring rods are fixed.

[0012] As a further solution of the present invention, the liquid guiding assembly includes a water pump fixed on one side of the processing box. The water inlet end of the water pump is connected with a water suction pipe. The water outlet end of the water pump is connected with a water guiding pipe. The top end of the water guiding pipe is clamped on one side of the processing box and communicated with the cavity.

[0013] A purification method for a nitrocotton waste gas pollution-free emission treatment and purification device, the purification method includes the following steps:

[0014] When treating the waste gas generated in the production process of nitrocotton, the intake pipe is connected to the waste gas emission source, and the waste gas enters the isolation cylinder through the intake pipe. The one-way valve added outside the intake pipe prevents the gas in the processing box from flowing back. When the waste gas contacts the flow guiding cover at the top, the inverted cone-shaped flow guiding cover realizes the purpose of guiding the waste gas. And the height of the isolation cylinder is lower than the height of the filter cartridge, so that the waste gas will enter between the isolation cylinder and the inner wall of the filter cartridge from the top of the isolation cylinder. The filter holes outside the filter cartridge will filter the waste gas, and the dust particles will be blocked by the filter holes. The filtered waste gas will then be discharged from the filter holes, so that the waste gas is introduced between the processing box and the inner wall of the filter cartridge;

[0015] At the same time, the motor and the water pump are controlled to work. The water pump at the bottom of the water pump draws water from the water source, so that the water enters the cavity in the side wall of the treatment box through the water pump and the water guide pipe. After the cavity is filled with water, the pressure increases, so that the water will be sprayed from several nozzles to the filter cartridge and contact with the exhaust gas. The solubility of the exhaust gas in water is used to remove the volatile organic matter in the exhaust gas by water absorption. Secondly, the output shaft of the motor drives the driving gear to rotate, and the driving gear drives the fixed shaft to rotate through the driven gear. The fixed shaft rotates through the connecting rod, and the connecting rod drives the isolation cylinder to rotate through the support rod. The isolation cylinder drives the filter cartridge and the turntable at the bottom to rotate. The turntable is supported and limited by the bearing seat, thereby improving the stability of the rotation of the filter cartridge and the isolation cylinder. As the filter cartridge continues to rotate, the exhaust gas discharged from the filter hole is fully in contact with the water sprayed from the nozzle, further improving the effect of water adsorbing volatile organic matter in the exhaust gas. The wastewater adsorbing volatile organic matter falls into the bottom of the treatment box from the drainage holes on both sides of the turntable, so that the wastewater will not accumulate above the turntable;

[0016] The nozzle sprays toward the filter cartridge, so that the sprayed water will directly impact the outside of the filter cartridge, achieving the purpose of backflushing the filter holes, flushing out the particulate impurities and sticky substances in the filter holes, and cooperating with the continuous rotation of the filter cartridge, so that the sprayed water will clean the filter cartridge and the filter holes in all directions, achieving the purpose of automatic clearing of the filter holes. The isolation cylinder is located inside the filter cartridge, and the sprayed water will not enter the air inlet pipe through the isolation cylinder, which plays a role in isolating the water and preventing water accumulation in the water inlet pipe. The mixture of particulate impurities and sticky substances will fall between the isolation cylinder and the inner wall of the filter cartridge after being flushed out of the filter holes, and finally discharged from the discharge pipe at the bottom of the filter cartridge, that is, the wastewater and the mixture are located at the bottom of the treatment box. When the mixture and wastewater are collected and treated, the discharge valve outside the treatment box can be opened to discharge them, and the treatment box can be cleaned without stopping the equipment;

[0017] After the water adsorption process for the waste gas, the waste gas is introduced into the diversion cavity inside the purification box through multiple connecting pipes. The waste gas enters the interior of the purification box through multiple diversion holes in the diversion cavity, and the purification box is filled with activated carbon particles. By utilizing the adsorption performance of the activated carbon, the harmful substances in the waste gas are adsorbed again. The waste gas is diverted through the diversion holes, thereby increasing the contact area between the activated carbon and the waste gas and improving the adsorption effect. Secondly, the fixed shaft drives the spiral blade to rotate. During the rotation of the spiral blade, the activated carbon at the bottom layer is turned up, and the fixed shaft drives multiple stirring rods to rotate in cooperation. The bottom of the inner wall of the purification box is designed as an inverted cone, so that the activated carbon at the edge of the purification box flows towards the lowest point, and in cooperation with the continuous upward pushing of the spiral blade, the fluidity of the activated carbon inside the purification box is increased, ensuring that the adsorption capacity of all the activated carbon is fully utilized. Secondly, the waste gas continues to flow upward and passes through the filter element. The filter element purifies the waste gas again and finally discharges from the discharge pipe above. By opening the cover plate, it is convenient to replace the filter element. After removing the filter element, the activated carbon at the bottom layer is exposed, which is also convenient for replacing the activated carbon.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In the present invention, the waste gas enters between the isolation cylinder and the inner wall of the filter cylinder from the top of the isolation cylinder. The filter holes outside the filter cylinder filter the waste gas. The dust particles are blocked by the filter holes, and the filtered waste gas is discharged from the filter holes, so that the waste gas is introduced between the treatment box and the inner wall of the filter cylinder. Water is sprayed from several nozzles towards the filter cylinder and contacts the waste gas. By utilizing the solubility of the waste gas in water, the volatile organic compounds in the waste gas are removed by water absorption. As the filter cylinder rotates continuously, the waste gas discharged from the filter holes is fully contacted with the water sprayed from the nozzles, further improving the effect of water adsorption of volatile organic compounds in the waste gas. The waste water adsorbed with volatile organic compounds falls from the drain holes on both sides of the turntable into the bottom of the treatment box, so that the waste water will not accumulate above the turntable. The spraying position of the nozzles faces the filter cylinder, so that the sprayed water will directly impact outside the filter cylinder, achieving the purpose of backwashing the filter holes. The particulate impurities and viscous substances in the filter holes will be washed out. In cooperation with the continuous rotation of the filter cylinder, the sprayed water will clean the filter cylinder and the filter holes in all directions, achieving the purpose of automatic blockage cleaning of the filter holes. The mixture of particulate impurities and viscous substances is washed out of the filter holes and falls between the isolation cylinder and the inner wall of the filter cylinder, and finally discharges from the discharge pipe at the bottom of the filter cylinder. Opening the discharge valve outside the treatment box can discharge the mixture and the waste water, and the treatment box can be cleaned without stopping the equipment, thus increasing the service life of the equipment and being beneficial to the efficient and stable purification treatment of the waste gas.

[0020] 2. In the present invention, waste gas is introduced into the diversion cavity inside the purification box through a plurality of connecting pipes. The waste gas enters the interior of the purification box through a plurality of diversion holes in the diversion cavity. The purification box is filled with activated carbon particles. By utilizing the adsorption performance of the activated carbon, harmful substances in the waste gas are adsorbed again. The waste gas is diverted through the diversion holes, thereby increasing the contact area between the activated carbon and the waste gas and improving the adsorption effect. Secondly, the fixed shaft drives the spiral blade to rotate. During the rotation of the spiral blade, the activated carbon at the bottom layer is turned up, and the fixed shaft drives a plurality of stirring rods to rotate in cooperation. The bottom of the inner wall of the purification box is designed as an inverted cone, so that the activated carbon at the edge of the purification box will flow to the lowest place, and in cooperation with the continuous upward pushing of the spiral blade on the activated carbon, the fluidity of the activated carbon inside the purification box is increased, ensuring that the adsorption capacity of all the activated carbon is fully utilized. Secondly, the waste gas continues to flow upward and passes through the filter element, and the filter element filters the waste gas again, thereby improving the effect of purifying the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0023] Figure 2 is a schematic partial cross-sectional structure diagram of the present invention;

[0024] Figure 3 is a schematic structure diagram of the air intake assembly of the present invention;

[0025] Figure 4 is a schematic structure diagram of the isolation assembly of the present invention;

[0026] Figure 5 is a schematic structure diagram of the connection between the purification box and the drive assembly of the present invention;

[0027] Figure 6 is a schematic structure diagram of the drive assembly of the present invention;

[0028] Figure 7 is a schematic cross-sectional structure diagram of the purification box of the present invention;

[0029] Figure 8 is a schematic front cross-sectional structure diagram of the treatment box of the present invention.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1. Processing box; 2. Intake component; 2001. Intake pipe; 2002. Bush; 2003. Check valve; 3. Support frame; 4. Isolation component; 401. Bearing seat; 402. Turntable; 403. Filter cartridge; 404. Limit sleeve; 405. Isolation cylinder; 406. Flow deflector; 407. Filter hole; 408. Discharge pipe; 5. Connecting pipe; 6. Purification box; 7. Driving component; 701. Motor; 702. Driving gear; 703. Driven gear; 704. Connecting rod; 705. Fixed shaft; 706. Helical blade; 707. Stirring rod; 8. Heat dissipation hole; 9. Flow guiding cavity; 10. Shunt hole; 11. Filter element; 12. Cover plate; 13. Discharge pipe; 14. Liquid guiding component; 141. Water pump; 142. Liquid guiding pipe; 143. Water suction pipe; 15. Cavity; 16. Nozzle; 17. Discharge valve. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-8 , the present invention provides a technical solution:

[0034] A pollution-free emission treatment and purification equipment for nitrocellulose waste gas includes a processing box 1. The bottom of the processing box 1 is connected to an intake component 2. A support frame 3 is fixed outside the intake component 2, and the support frame 3 is fixed at the lower part of the inner wall of the processing box 1. The intake component 2 includes an intake pipe 2001. The intake pipe 2001 is installed through the bottom of the processing box 1. The top end of the intake pipe 2001 is sleeved with a bush 2002. The intake pipe 2001 is clamped in the middle of the support frame 3. A check valve 2003 is installed at a position on the outer wall of the intake pipe 2001 close to the bottom of the processing box 1; the waste gas enters through the intake pipe 2001, and the check valve 2003 added outside the intake pipe 2001 prevents the gas in the processing box 1 from flowing back.

[0035] As a further solution of the present invention, the top end of the intake component 2 is connected to an isolation component 4. The isolation component 4 is fixedly installed inside the processing box 1. The isolation component 4 includes a bearing seat 401. The bearing seat 401 is clamped at the lower part inside the processing box 1. A turntable 402 is rotatably connected inside the bearing seat 401. The bush 2002 is clamped inside the turntable 402. A filter cartridge 403 is fixedly connected to the turntable 402. A number of filter holes 407 are provided on the outer wall of the filter cartridge 403. A limit sleeve 404 is sleeved on the top of the filter cartridge 403, and the limit sleeve 404 is fixed at the top of the inner wall of the processing box 1.

[0036] During operation, the filter cartridge 403 drives the turntable 402 to rotate inside the bearing block 401. The bearing block 401 supports and positions the turntable 402, and cooperates with the limit sleeve 404 to position the top of the filter cartridge 403, thereby improving the rotation stability of the filter cartridge 403. The filter holes 407 outside the filter cartridge 403 filter the waste gas. Dust particles are blocked by the filter holes 407, and the filtered waste gas is discharged from the filter holes 407.

[0037] As a further solution of the present invention, a separation cylinder 405 is fixedly connected to the bottom of the inner wall of the filter cartridge 403. The top end of the intake pipe 2001 communicates with the inside of the separation cylinder 405. The height of the separation cylinder 405 is lower than that of the filter cartridge 403, and a flow guide cover 406 is provided above the separation cylinder 405. The flow guide cover 406 is designed as an inverted cone and is fixed to the top of the inner wall of the filter cartridge 403. A discharge pipe 408 is provided between the separation cylinder 405 and the inner wall of the filter cartridge 403. The discharge pipe 408 is installed through the turntable 402. Drainage holes are respectively provided on both sides of the turntable 402. A discharge valve 17 is provided below the outer wall of the treatment tank 1, and the discharge valve 17 communicates with the inside of the treatment tank 1.

[0038] A liquid guide assembly 14 is fixed to one side of the treatment tank 1. A cavity 15 is provided inside the side wall of the treatment tank 1. The cavity 15 communicates with the end of the liquid guide assembly 14. A plurality of nozzles 16 are installed through the inner wall of the cavity 15, and the plurality of nozzles 16 face the middle of the treatment tank 1. When the cavity 15 is filled with water, the pressure increases, so that the water is sprayed from the plurality of nozzles 16 onto the filter cartridge 403 and contacts the waste gas. By using the solubility of the waste gas in water, the volatile organic compounds in the waste gas are removed by water absorption.

[0039] During operation, the separation cylinder 405 is located inside the filter cartridge 403, and the sprayed water will not enter the intake pipe 2001 through the separation cylinder 405, which plays a role in isolating the water and preventing water accumulation in the intake pipe. When the waste gas contacts the flow guide cover 406 at the top, the inverted cone-shaped flow guide cover 406 achieves the purpose of guiding the waste gas. Moreover, the height of the separation cylinder 405 is lower than that of the filter cartridge 403, so that the waste gas enters between the separation cylinder 405 and the inner wall of the filter cartridge 403 from the top of the separation cylinder 405, improving the effect of guiding the waste gas.

[0040] The waste water and impurities are both located at the bottom of the treatment tank 1. When collecting and treating the impurities and waste water, the discharge valve 17 outside the treatment tank 1 can be opened to discharge them, and the treatment tank 1 can be cleaned without shutting down the equipment.

[0041] As a further solution of the present invention, connecting pipes 5 are respectively communicated at the four corners between the top of the treatment tank 1 and the filter cartridge 403. The tops of the four connecting pipes 5 are communicated with a purification tank 6, and the bottom of the purification tank 6 is fixed on the treatment tank 1; a driving assembly 7 is fixedly connected to one side of the treatment tank 1. The driving assembly 7 includes a motor 701. The motor 701 is fixed on the treatment tank 1. A driving gear 702 is fixed on the output shaft of the motor 701. The driving gear 702 is externally engaged with a driven gear 703. A fixed shaft 705 is fixed in the middle of the driven gear 703. The fixed shaft 705 is connected to the bottom of the purification tank 6 through a rotating sleeve. A connecting rod 704 is fixed at the bottom end of the fixed shaft 705. The outer wall of the connecting rod 704 is fixed to the inner wall of the isolation cylinder 405 through a plurality of support rods;

[0042] During operation, the driving gear 702 drives the fixed shaft 705 to rotate through the driven gear 703. The fixed shaft 705 rotates through the connecting rod 704, and the connecting rod 704 drives the isolation cylinder 405 to rotate through the support rods, which facilitates the isolation cylinder 405 to drive the filter cartridge 403 and the bottom turntable 402 to rotate.

[0043] As a further solution of the present invention, the bottom of the inner wall of the purification tank 6 is designed in an inverted cone shape. A diversion cavity 9 is opened at the bottom of the purification tank 6. The top of the connecting pipe 5 is communicated with the diversion cavity 9. A plurality of diversion holes 10 are opened at the top of the diversion cavity 9, and the diversion holes 10 are communicated with the inside of the purification tank 6; a filter element 11 is arranged above the purification tank 6. A cover plate 12 is arranged above the filter element 11. The cover plate 12 is clamped on the top of the purification tank 6. A discharge pipe 13 is installed through the middle of the cover plate 12. The bottom end of the discharge pipe 13 is communicated with the inside of the purification tank 6.

[0044] A spiral blade 706 is fixed on the outer wall of the fixed shaft 705. The spiral blade 706 is arranged in the purification tank 6 and above the diversion holes 10. A plurality of heat dissipation holes 8 are opened at the lower part of the outer wall of the purification tank 6. The top end of the fixed shaft 705 penetrates through the bottom of the purification tank 6 and three stirring rods 707 are fixed.

[0045] During operation, gas enters the inside of the purification tank 6 from the plurality of diversion holes 10 in the diversion cavity 9, and the purification tank 6 is filled with activated carbon particles. Using the adsorption performance of activated carbon, harmful substances in the waste gas are adsorbed again. The waste gas is diverted through the diversion holes 10, thereby increasing the contact area between the activated carbon and the waste gas and improving the adsorption effect;

[0046] During the rotation of the spiral blade 706, the activated carbon at the bottom layer is turned up, and the fixed shaft 705 is cooperated to drive a plurality of stirring rods 707 to rotate. The bottom of the inner wall of the purification tank 6 is designed as an inverted cone, so that the activated carbon at the inner edge of the purification tank 6 will flow to the lowest point, cooperate with the spiral blade 706 to continuously push up the activated carbon, increase the fluidity of the activated carbon inside the purification tank 6, and ensure that the adsorption capacity of all activated carbon is fully utilized.

[0047] As a further solution of the present invention, the liquid guiding assembly 14 includes a water pump 141. The water pump 141 is fixed on one side of the processing tank 1. The water inlet end of the water pump 141 is connected with a water suction pipe 143, and the water outlet end of the water pump 141 is connected with a water guiding pipe 142. The top end of the water guiding pipe 142 is clamped on one side of the processing tank 1 and communicated with the cavity 15.

[0048] During operation, the water suction pipe 143 at the bottom of the water pump 141 pumps water from the water source, so that the water enters the cavity 15 inside the side wall of the processing tank 1 through the water pump 141 and the water guiding pipe 142. The cavity 15 is designed as a ring, which facilitates the synchronous introduction of water into a plurality of nozzles 16 and improves the uniformity of water spraying of the nozzles 16.

[0049] A purification method for a pollution-free emission treatment and purification device of nitrocellulose waste gas, the purification method includes the following steps:

[0050] When treating the waste gas generated during the production process of nitrocellulose, the intake pipe 2001 is connected to the waste gas emission source, and the waste gas enters the isolation cylinder 405 through the intake pipe 2001. The one-way valve 2003 added outside the intake pipe 2001 prevents the gas in the processing tank 1 from flowing back. When the waste gas contacts the flow guide cover 406 at the top, the inverted cone-shaped flow guide cover 406 realizes the purpose of guiding the waste gas. Moreover, the height of the isolation cylinder 405 is lower than the height of the filter cartridge 403, so that the waste gas will enter between the top of the isolation cylinder 405 and the inner wall of the filter cartridge 403. The filter holes 407 outside the filter cartridge 403 will filter the waste gas, and the dust particles will be blocked by the filter holes 407. The filtered waste gas is discharged from the filter holes 407, so that the waste gas is introduced between the inner walls of the processing tank 1 and the filter cartridge 403.

[0051] At the same time, the motor 701 and the water pump 141 are controlled to work. The water pumping pipe 143 at the bottom of the water pump 141 draws water from the water source, so that the water enters the cavity 15 in the side wall of the treatment box 1 through the water pump 141 and the water pipe 142. After the cavity 15 is filled with water, the pressure increases, so that the water will be sprayed from a plurality of nozzles 16 to the filter cartridge 403 and contact with the exhaust gas. The solubility of the exhaust gas in water is utilized to remove the volatile organic matter in the exhaust gas by water absorption. Secondly, the output shaft of the motor 701 drives the driving gear 702 to rotate, and the driving gear 702 drives the fixed shaft 705 to rotate through the driven gear 703. The fixed shaft 705 is connected to the connecting rod 7 04 rotates, the connecting rod 704 drives the isolation cylinder 405 to rotate through the support rod, and the isolation cylinder 405 drives the filter cylinder 403 and the rotating disk 402 at the bottom to rotate, and the rotating disk 402 is supported and limited by the bearing seat 401, thereby improving the rotation stability of the filter cylinder 403 and the isolation cylinder 405. As the filter cylinder 403 continues to rotate, the exhaust gas discharged from the filter hole 407 is fully in contact with the water sprayed by the nozzle 16, further improving the effect of water adsorbing volatile organic compounds in the exhaust gas, and the waste water adsorbing volatile organic compounds falls from the drainage holes on both sides of the rotating disk 402 into the bottom of the processing box 1, so that the waste water will not accumulate above the rotating disk 402;

[0052] The nozzle 16 sprays toward the filter cartridge 403, so that the sprayed water will directly impact the outside of the filter cartridge 403, achieving the purpose of backwashing the filter hole 407, and flushing out the granular impurities and sticky substances in the filter hole 407. With the continuous rotation of the filter cartridge 403, the sprayed water will clean the filter cartridge 403 and the filter hole 407 in all directions, achieving the purpose of automatically clearing the filter hole 407. The isolation cylinder 405 is located inside the filter cartridge 403, and the sprayed water will not enter the intake pipe 20 through the isolation cylinder 405. 01, it plays the role of isolating water to prevent water accumulation in the water inlet pipe. After being flushed out of the filter hole 407, the mixed particles and viscous substances will fall between the isolation cylinder 405 and the inner wall of the filter cylinder 403, and finally be discharged from the discharge pipe 408 at the bottom of the filter cylinder 403, that is, the wastewater and the mixed substances are located at the bottom of the treatment box 1. When the mixed substances and wastewater are collected and processed, the discharge valve 17 outside the treatment box 1 can be opened to discharge them, and the treatment box 1 can be cleaned without stopping the equipment;

[0053] After the water adsorption process for the waste gas, the waste gas is introduced into the diversion cavity 9 in the purification box 6 through multiple connecting pipes 5. The waste gas enters the interior of the purification box 6 through multiple diversion holes 10 in the diversion cavity 9. And the purification box 6 is filled with activated carbon particles. Using the adsorption performance of the activated carbon, the harmful substances in the waste gas are adsorbed again. The waste gas is diverted through the diversion holes 10, thereby increasing the contact area between the activated carbon and the waste gas and improving the adsorption effect. Secondly, the fixed shaft 705 drives the spiral blade 706 to rotate. During the rotation of the spiral blade 706, the activated carbon at the bottom layer is turned up, and multiple stirring rods 707 are driven to rotate in cooperation with the fixed shaft 705. The bottom of the inner wall of the purification box 6 is designed as an inverted cone, so that the activated carbon at the inner edge of the purification box 6 will flow to the lowest place, and in cooperation with the continuous upward push of the spiral blade 706 on the activated carbon, the fluidity of the activated carbon inside the purification box 6 is increased, ensuring that the adsorption capacity of all the activated carbon is fully utilized. Secondly, the waste gas continues to flow upward and passes through the filter element 11. The filter element 11 purifies the waste gas again and finally discharges from the upper discharge pipe 13. By opening the cover plate 12, it is convenient to replace the filter element 11. After removing the filter element 11, the activated carbon at the bottom layer is exposed, which is also convenient for replacing the activated carbon.

Claims

1. A pollution-free emission treatment and purification device for nitrocellulose waste gas, including a treatment tank (1), characterized in that: An air inlet component (2) is connected to the bottom of the processing box (1). A support frame (3) is fixed outside the air inlet component (2), and the support frame (3) is fixed below the inner wall of the processing box (1). The top of the air inlet component (2) is connected to an isolation component (4), and the isolation component (4) is fixedly installed inside the processing box (1). Connecting pipes (5) are respectively communicated at the four corners of the top of the processing box (1). The tops of the four connecting pipes (5) are communicated with a purification box (6). The bottom of the purification box (6) is fixed on the processing box (1). A driving component (7) is fixedly connected to one side of the processing box (1). The two ends of the driving component (7) respectively penetrate and extend into the processing box (1) and the purification box (6). A diversion cavity (9) is formed at the bottom inside the purification box (6). The top of the connecting pipe (5) is communicated with the diversion cavity (9). A plurality of diversion holes (10) are formed at the top of the inner wall of the diversion cavity (9), and the diversion holes (10) are communicated with the inside of the purification box (6). A filter element (11) is arranged above the purification box (6). A cover plate (12) is arranged above the filter element (11). The cover plate (12) is clamped at the top of the purification box (6). A discharge pipe (13) is installed through the middle of the cover plate (12). The bottom end of the discharge pipe (13) is communicated with the inside of the purification box (6). A liquid guide component (14) is fixed on one side of the processing box (1). A cavity (15) is formed inside the side wall of the processing box (1). The cavity (15) is communicated with the end of the liquid guide component (14). A plurality of nozzles (16) are installed through the inner wall of the cavity (15), and the plurality of nozzles (16) face the middle inside the processing box (1).

2. The pollution-free emission treatment and purification equipment for nitrocellulose waste gas according to claim 1, characterized in that: The air inlet component (2) includes an air inlet pipe (2001). The air inlet pipe (2001) is installed through the bottom of the processing box (1). A sleeve (2002) is sleeved on the top of the air inlet pipe (2001). The sleeve (2002) is clamped at the bottom of the isolation component (4). The air inlet pipe (2001) is clamped in the middle of the support frame (3). A one-way valve (2003) is installed at a position on the outer wall of the air inlet pipe (2001) close to the bottom of the processing box (1).

3. A nitrocotton waste gas pollution-free emission treatment and purification device according to claim 2, characterized in that: The isolation component (4) includes a bearing seat (401). The bearing seat (401) is clamped below the inside of the processing box (1). A turntable (402) is rotatably connected inside the bearing seat (401). A filter cartridge (403) is fixedly connected to the turntable (402). A plurality of filter holes (407) are formed on the outer wall of the filter cartridge (403). A limit sleeve (404) is sleeved on the top of the filter cartridge (403). The limit sleeve (404) is fixed to the top of the inner wall of the processing box (1).

4. A nitrocotton waste gas pollution-free emission treatment and purification device according to claim 3, characterized in that: The bottom of the inner wall of the filter cartridge (403) is fixedly connected with a separation cylinder (405). The top end of the air inlet pipe (2001) is communicated with the inside of the separation cylinder (405). The height of the separation cylinder (405) is lower than that of the filter cartridge (403), and a flow guide cover (406) is arranged above the separation cylinder (405). The flow guide cover (406) is designed in an inverted conical shape and is fixed at the top of the inner wall of the filter cartridge (403). A discharge pipe (408) is arranged between the separation cylinder (405) and the inner wall of the filter cartridge (403). The discharge pipe (408) is installed through the turntable (402). Drainage holes are respectively formed on both sides of the turntable (402). A discharge valve (17) is arranged below the outer wall of the treatment tank (1), and the discharge valve (17) is communicated with the inside of the treatment tank (1).

5. A pollution-free emission treatment and purification equipment for nitrocellulose waste gas, characterized in that: The driving assembly (7) includes a motor (701). The motor (701) is fixed on the treatment tank (1). A driving gear (702) is fixed on the output shaft of the motor (701). The driving gear (702) is externally engaged with a driven gear (703). A fixed shaft (705) is fixed in the middle of the driven gear (703). The fixed shaft (705) is connected to the bottom of the purification tank (6) through a rotating sleeve. A connecting rod (704) is fixed at the bottom end of the fixed shaft (705). The outer wall of the connecting rod (704) is fixed to the inner wall of the separation cylinder (405) through a plurality of support rods.

6. The pollution-free emission treatment and purification equipment for nitrocellulose waste gas according to claim 5, characterized in that: A spiral blade (706) is fixed on the outer wall of the fixed shaft (705). The spiral blade (706) is arranged in the purification tank (6) and above the diversion holes (10). The bottom of the inner wall of the purification tank (6) is designed in an inverted conical shape. A plurality of heat dissipation holes (8) are formed below the outer wall of the purification tank (6). Three stirring rods (707) are fixed at the top end of the fixed shaft (705) through the bottom of the purification tank (6).

7. A nitrocotton waste gas pollution-free emission treatment and purification device according to claim 1, characterized in that: The liquid guiding assembly (14) includes a water pump (141). The water pump (141) is fixed on one side of the treatment tank (1). A water suction pipe (143) is connected to the water inlet end of the water pump (141). A water guide pipe (142) is connected to the water outlet end of the water pump (141). The top end of the water guide pipe (142) is clamped on one side of the treatment tank (1) and communicated with the cavity (15).

8. A purification method for a purification device for pollution-free emission treatment of nitrocellulose waste gas, according to any one of claims 1-7, a purification device for pollution-free emission treatment of nitrocellulose waste gas, characterized in that, The purification method includes the following steps: When treating the waste gas generated in the nitrocellulose production process, the intake pipe (2001) is connected to the waste gas emission source, and the waste gas enters the isolation cylinder (405) through the intake pipe (2001). The one-way valve (2003) installed outside the intake pipe (2001) prevents the gas in the treatment tank (1) from flowing back. When the waste gas contacts the flow guide cover (406) at the top, the inverted conical design of the flow guide cover (406) realizes the purpose of guiding the waste gas. Moreover, the height of the isolation cylinder (405) is lower than that of the filter cartridge (403), so that the waste gas will enter from the top of the isolation cylinder (405) between the inner wall of the isolation cylinder (405) and the filter cartridge (403). The filter holes (407) outside the filter cartridge (403) will filter the waste gas, and the dust particles will be blocked by the filter holes (407). The filtered waste gas will then be discharged from the filter holes (407), and the waste gas is introduced between the inner wall of the treatment tank (1) and the filter cartridge (403). At the same time, control the motor (701) and the water pump (141) to work. The water suction pipe (143) at the bottom of the water pump (141) pumps water from the water source, so that the water enters the cavity (15) inside the side wall of the treatment tank (1) through the water pump (141) and the water guide pipe (142). After the cavity (15) is filled with water, the pressure increases, so that the water will be sprayed from several nozzles (16) towards the filter cartridge (403) and contact the waste gas. Utilizing the solubility of the waste gas in water, the volatile organic compounds in the waste gas are removed by water absorption. Secondly, the output shaft of the motor (701) drives the driving gear (702) to rotate. The driving gear (702) drives the fixed shaft (705) to rotate through the driven gear (703). The fixed shaft (705) rotates through the connecting rod (704), and the connecting rod (704) drives the isolation cylinder (405) to rotate through the support rod. The isolation cylinder (405) drives the filter cartridge (403) and the turntable (402) at the bottom to rotate. The turntable (402) is supported and limited by the bearing seat (401), thereby improving the rotation stability of the filter cartridge (403) and the isolation cylinder (405). As the filter cartridge (403) continues to rotate, the waste gas discharged from the filter holes (407) will fully contact the water sprayed from the nozzles (16), further improving the effect of water adsorbing the volatile organic compounds in the waste gas. The waste water adsorbing the volatile organic compounds will fall from the drain holes on both sides of the turntable (402) into the bottom of the treatment tank (1), so that the waste water will not accumulate above the turntable (402). The nozzle (16) sprays toward the filter cartridge (403), so that the sprayed water directly impacts the outside of the filter cartridge (403), achieving the purpose of backwashing the filter holes (407), flushing out the particle impurities and sticky substances in the filter holes (407), and cooperating with the continuous rotation of the filter cartridge (403), the sprayed water cleans the filter cartridge (403) and the filter holes (407) in all directions, achieving the purpose of automatically clearing the filter holes (407). The isolation cylinder (405) is located inside the filter cartridge (403), and the sprayed water will not enter the air intake pipe through the isolation cylinder (405). (2001), it plays the role of isolating water to prevent water accumulation in the water inlet pipe. After the granular impurities and the mixture of viscous substances are flushed out of the filter hole (407), they will fall between the isolation cylinder (405) and the inner wall of the filter cylinder (403), and finally be discharged from the discharge pipe (408) at the bottom of the filter cylinder (403). That is, the wastewater and the mixture are located at the bottom of the treatment box (1). When the mixture and the wastewater are collected and processed, the discharge valve (17) outside the treatment box (1) can be opened to discharge them. The treatment box (1) can be cleaned without stopping the equipment; After the waste gas is subjected to the water adsorption process, the waste gas is introduced into the guide chamber (9) in the purification box (6) through multiple connecting pipes (5). The waste gas enters the interior of the purification box (6) through multiple diversion holes (10) in the diversion chamber (9). The purification box (6) is filled with activated carbon particles. The adsorption performance of the activated carbon is used to adsorb harmful substances in the waste gas again. The waste gas is diverted through the diversion holes (10), thereby increasing the contact area between the activated carbon and the waste gas and improving the adsorption effect. Secondly, the fixed shaft (705) drives the spiral blade (706) to rotate. During the rotation of the spiral blade (706), the activated carbon on the bottom layer is turned up, and the fixed shaft (705) drives multiple stirring The stirring rod (707) rotates, and the bottom of the inner wall of the purification box (6) is designed to be inverted cone-shaped, so that the activated carbon at the inner edge of the purification box (6) will flow to the lowest point, and the spiral blade (706) will continue to push the activated carbon upward, thereby increasing the fluidity of the activated carbon inside the purification box (6) and ensuring that the adsorption capacity of all activated carbon is fully utilized. Then, the exhaust gas continues to flow upward and passes through the filter element (11). The filter element (11) purifies the exhaust gas again and is finally discharged from the upper discharge pipe (13). By opening the cover plate (12), the filter element (11) can be replaced. After removing the filter element (11), the activated carbon on the bottom layer is exposed to the outside, which is also convenient for replacing the activated carbon.

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