VOC waste gas adsorption equipment

Abstract

The utility model relates to the technical field of VOC waste gas, and discloses VOC waste gas adsorption equipment which is characterized in that an air inlet pipe is arranged on the side surface of a mixing box, a circulating pipe is arranged on the bottom surface of the mixing box, a circulating fan is arranged on the front surface of the mixing box, and a filter is arranged on the inner side of a fluidized bed. According to the VOC waste gas adsorption equipment, the zeolite powder and the waste gas are uniformly mixed and then are used for treating the VOC waste gas by utilizing a penetrating double adsorption technology, the zeolite powder is added into the inner side of the fluidized bed, is firstly mixed with the waste gas and then is intercepted on the filter, and the waste gas further penetrates through the zeolite powder on the filter after entering the fluidized bed and is purified and discharged; the powder is continuously backflushed and shaken down under a certain pressure difference, is collected by the collecting frame, is conveyed into the air inlet pipe again by the air blower, is mixed with the waste gas and then enters the fluidized bed, and the operation is cycled, so that the powder is in full collision contact with the waste gas and is continuously recycled, and the VOC is treated in a fluidized adsorption manner; therefore, the adsorption capacity of the zeolite powder is fully exerted.

Description

Technical Field

[0001] The utility model relates to the technical field of VOC waste gas, in particular to a VOC waste gas adsorption device. Background Art

[0002] Volatile Organic Compounds (VOCs) are a class of chemical substances that are harmful to the environment and human health. They are mainly derived from industrial production, traffic exhaust, and interior decoration. In order to reduce the pollution of VOC waste gas to the environment and protect people's health, it is necessary to design and implement VOC waste gas treatment engineering technology solutions. Adsorption technology is the most classic and commonly used gas purification technology, and it is also one of the mainstream technologies for industrial treatment. Zeolite is one of the commonly used VOC treatment adsorption materials.

[0003] Zeolite is the general name for zeolite minerals, which are aluminum silicate ores containing water and alkali metals or alkaline earth metals. There are 36 types of zeolites that have been discovered, and their common feature is that they have a frame structure, that is, in their crystals, the molecules are connected together like a frame, forming many cavities in the middle. Zeolite has properties such as adsorption, ion exchange, catalysis, and acid and heat resistance, so it is widely used as an adsorbent, ion exchanger and catalyst, and can also be used in gas drying, purification and sewage treatment.

[0004] When zeolite is used in the form of powder (particle size of about 5-30 microns) for VOC waste gas adsorption treatment, the main problems faced are that the powder is difficult to fully contact with the waste gas, the adsorption capacity of the zeolite powder cannot be fully exerted, and it is difficult to separate the zeolite powder and the waste gas, thereby failing to achieve standard emission of waste gas. Now a VOC waste gas adsorption equipment is needed to solve the above technical solutions. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the utility model provides a VOC waste gas adsorption equipment, which is capable of treating VOC waste gas by using the penetration double adsorption technology after evenly mixing zeolite powder with waste gas. After the zeolite powder is added to the inner side of the fluidized bed, it is first mixed with the waste gas and then intercepted on the filter. After the waste gas enters, it further penetrates the zeolite powder on the filter to purify and discharge it. It is continuously recoil-shaken under a certain pressure difference, and after being collected by the collection frame, it is transported by the blower to the air inlet pipe again to mix with the waste gas and then enter the fluidized bed. This operation is circulated so that the powder can fully collide with the waste gas and be continuously recycled, thereby treating VOC by fluidized adsorption, thereby giving full play to the adsorption capacity of zeolite powder and other advantages, and solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a VOC waste gas adsorption device, comprising a fluidized bed, a powder adding tank is arranged on the front of the fluidized bed, a blower is arranged on the side of the powder adding tank, a collecting hopper is arranged on the bottom of the fluidized bed, powder dischargers are arranged at both ends of the collecting hopper, an exhaust pipe is arranged on the back of the blower, a mixing box is arranged on the back of the fluidized bed, an air inlet pipe is arranged on the side of the mixing box, a circulation pipe is arranged on the bottom of the mixing box, a circulating fan is arranged on the front of the mixing box, a filter is arranged on the inside of the fluidized bed, a collecting frame is arranged on the bottom of the filter, a support seat is arranged on the bottom of the collecting frame, a feeding pipe is arranged on the top surface of the fluidized bed, and a valve is arranged on the front of the collecting hopper.

[0009] Preferably, the front side of the fluidized bed is fixedly connected to a powder adding tank, and both ends of the powder adding tank are respectively fixedly connected to a through pipe and a feed pipe, and the feed pipe is connected to the fluidized bed, the through pipe is connected to the exhaust pipe, and the exhaust pipe is located on the back side of the through pipe, and the collecting hopper is fixedly installed on the bottom surface of the fluidized bed, and the collecting hopper is connected to the fluidized bed.

[0010] Through the above technical solution, the powder enters the fluidized bed directly through the feed pipe, and the circulating fan is started to absorb it from the inside of the fluidized bed into the mixing box. At this time, the exhaust gas is sucked into the box through the air inlet pipe and mixed evenly with the powder, thereby adsorbing VOC and being in the mixed adsorption stage. The powder enters the fluidized bed and the zeolite powder is adsorbed on the surface of the filter by the blower in a negative pressure manner. On the surface of the filter, the VOC molecules are adsorbed by the zeolite powder and are in the penetration adsorption stage.

[0011] Preferably, the powder discharger is fixedly installed at the two ends of the back side of the collecting hopper, and the two ends of the powder discharger are fixedly connected to the exhaust pipe, the mixing box is fixedly installed on the fluidized bed, and the front side of the mixing box is fixedly connected to the circulating fan, the two ends of the circulating fan are fixedly connected to the circulating pipe, and the circulating pipe passes through the mixing box and the collecting hopper respectively.

[0012] Through the above technical scheme, under a certain pressure difference, high-pressure air can blow the zeolite powder off the surface of the filter, and the collection frame can collect the blown zeolite powder and then use the blower to transport it to the air inlet pipe to mix with the exhaust gas and then enter the fluidized bed again. This continuous cycle operation makes the zeolite powder fully utilized after being adsorbed to saturation. After a period of operation, the discarded nano-zeolite powder is discharged from the powder discharge pipe at the side end of the collecting hopper by the powder discharger, and the new zeolite powder is poured into the powder adding tank and added into the fluidized bed, thereby completing the exhaust gas adsorption operation and facilitating the operator's operation.

[0013] Preferably, the air inlet pipe is connected to the exhaust pipe and the mixing box respectively, the circulation fans are fixedly connected to the lifting pump, the filter is fixedly installed on the top inner side of the fluidized bed, and the bottom surface of the filter is fixedly connected to the collecting frame.

[0014] Through the above technical scheme, after the zeolite powder and the exhaust gas are evenly mixed, the VOC exhaust gas is treated by the penetration double adsorption technology. After the zeolite powder is added to the inner side of the fluidized bed, it is first mixed with the exhaust gas and then intercepted on the filter. After the exhaust gas enters, it further penetrates the zeolite powder on the filter to purify it and discharge it. Under a certain pressure difference, it is continuously recoiled and shaken. After being collected by the collection frame, it is transported to the air inlet pipe by the blower again and mixed with the exhaust gas before entering the fluidized bed. This operation is repeated so that the powder can fully collide with the exhaust gas and be continuously recycled, and then the VOC is treated by fluidized adsorption, thereby giving full play to the adsorption capacity of the zeolite powder.

[0015] Preferably, the collecting frame passes through the middle of the supporting seat, and a discharge port is provided on the bottom surface of the collecting frame.

[0016] Through the above technical scheme, zeolite fluidized bed technology is adopted, and gas mixing and penetration double adsorption technology is utilized. The gas is first mixed and collided with zeolite powder in the internal space of the mixing box to increase the chance of exhaust gas and adsorption material collision and increase adsorption efficiency. Then the gas passes through the filter surface with zeolite powder, so that the exhaust gas is further adsorbed. Through double adsorption, no matter how the concentration range of the gas concentration changes, the emission concentration can be kept up to the emission standard. At the same time, the adsorption material is easy to replace. By using semi-mechanical addition and replacement, the adsorption material can be replaced with less manpower and labor intensity, and no blockage will occur due to impurities in the gas.

[0017] Compared with the prior art, the utility model provides a VOC waste gas adsorption device with the following features:

[0018] Beneficial effects:

[0019] 1. The utility model treats VOC waste gas by using the penetration double adsorption technology after the zeolite powder is evenly mixed with the waste gas. After the zeolite powder is added to the inner side of the fluidized bed, it is first mixed with the waste gas and then intercepted on the filter. After the waste gas enters, it further penetrates the zeolite powder on the filter to purify it and discharge it. It is continuously recoiled and shaken under a certain pressure difference. After being collected by the collection frame, it is transported to the air inlet pipe by the blower again and mixed with the waste gas before entering the fluidized bed. This operation is circulated so that the powder can fully collide with the waste gas and be continuously recycled, thereby treating VOC by fluidized adsorption, thereby giving full play to the adsorption capacity of the zeolite powder.

[0020] 2. The utility model adopts zeolite fluidized bed technology and utilizes gas mixing and penetration double adsorption technology. The gas is first mixed and collided with zeolite powder in the internal space of the mixing box to increase the chance of exhaust gas colliding with the adsorption material and increase the adsorption efficiency. Then the gas passes through the filter surface with zeolite powder, so that the exhaust gas is further adsorbed. Through double adsorption, no matter how the concentration range of the gas concentration changes, the emission concentration can be kept to meet the emission standard. At the same time, the adsorption material is easy to replace. By using semi-mechanical addition and replacement, the adsorption material can be replaced with less manpower and labor intensity, and no blockage will occur due to impurities in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front structure of the fluidized bed of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the fluidized bed of the utility model;

[0023] Figure 3 It is a schematic diagram of the back structure of the fluidized bed of the utility model.

[0024] Among them: 1. fluidized bed; 2. powder adding tank; 3. blower; 4. collecting hopper; 5. powder discharger; 6. exhaust pipe; 7. mixing box; 8. air inlet pipe; 9. circulation pipe; 10. circulation fan; 11. filter; 12. collection frame; 13. support seat; 14. feed pipe; 15. valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 A VOC waste gas adsorption device includes a fluidized bed 1, a powder adding tank 2 is arranged on the front of the fluidized bed 1, a blower 3 is arranged on the side of the powder adding tank 2, a collecting hopper 4 is arranged on the bottom of the fluidized bed 1, powder dischargers 5 are arranged at both ends of the collecting hopper 4, an exhaust pipe 6 is arranged on the back of the blower 3, a mixing box 7 is arranged on the back of the fluidized bed 1, an air inlet pipe 8 is arranged on the side of the mixing box 7, a circulation pipe 9 is arranged on the bottom of the mixing box 7, a circulating fan 10 is arranged on the front of the mixing box 7, a filter 11 is arranged on the inside of the fluidized bed 1, a collecting frame 12 is arranged on the bottom of the filter 11, a support seat 13 is arranged on the bottom of the collecting frame 12, a feeding pipe 14 is arranged on the top surface of the fluidized bed 1, and a valve 15 is arranged on the front of the collecting hopper 4.

[0027] Specifically, the front of the fluidized bed 1 is fixedly connected to the powder adding tank 2, and the two ends of the powder adding tank 2 are respectively fixedly connected to the through pipe and the feed pipe 14, and the feed pipe 14 is connected to the fluidized bed 1, and the through pipe is connected to the exhaust pipe 6, and the exhaust pipe 6 is located on the back of the through pipe, and the collecting hopper 4 is fixedly installed on the bottom surface of the fluidized bed 1, and the collecting hopper 4 is connected to the fluidized bed 1. The advantage is that the powder directly enters the fluidized bed 1 through the feed pipe, and the circulating fan 10 is started at this time to be absorbed from the inside of the fluidized bed 1 into the mixing box 7. At this time, the exhaust gas is sucked into the box through the air inlet pipe 8 and mixed evenly with the powder, thereby adsorbing VOC and being in the mixed adsorption stage, and the powder enters the fluidized bed 1 and the zeolite powder is adsorbed on the surface of the filter 11 by the blower 3 in a negative pressure manner, and on the surface of the filter 11, the VOC molecules are adsorbed by the zeolite powder and are in the penetration adsorption stage.

[0028] Specifically, the powder discharger 5 is fixedly installed at both ends of the back of the collecting hopper 4, and the two ends of the powder discharger 5 are fixedly connected to the exhaust pipe, the mixing box 7 is fixedly installed on the fluidized bed 1, and the front of the mixing box 7 is fixedly connected to the circulating fan 10, and the two ends of the circulating fan 10 are fixedly connected to the circulating pipe 9, and the circulating pipe 9 runs through the mixing box 7 and the collecting hopper 4. The advantage is that under a certain pressure difference, the high-pressure air can blow the zeolite powder off the surface of the filter 11, and the collection frame 12 can collect the falling zeolite powder and then use the blower 3 to transport it to the air inlet pipe 8 and mix it with the exhaust gas and then enter the fluidized bed 1 again. In this way, the zeolite powder is fully utilized after being adsorbed and saturated, and after a period of operation, the discarded nano zeolite powder is discharged from the powder discharge pipe at the side end of the collecting hopper 4 by the powder discharger 5, and the new zeolite powder is poured into the powder adding tank 2 and added into the fluidized bed 1, thereby completing the exhaust gas adsorption operation, and at the same time facilitating the operation of the operator.

[0029] Specifically, the air inlet pipe 8 is connected with the exhaust pipe 6 and the mixing box 7 respectively, the circulating fan 10 is fixedly connected to the lifting pump, the filter 11 is fixedly installed at the top of the inner side of the fluidized bed 1, and the bottom surface of the filter 11 is fixedly connected to the collecting frame 12. The advantage is that after the zeolite powder and the exhaust gas are evenly mixed, the VOC exhaust gas is treated by the penetration double adsorption technology. After the zeolite powder is added to the inner side of the fluidized bed 1, it is first mixed with the exhaust gas, and then intercepted on the filter 11. After the exhaust gas enters, it further penetrates the zeolite powder on the filter 11 to purify and discharge it. It is continuously recoiled and shaken under a certain pressure difference. After being collected by the collecting frame 12, it is transported to the air inlet pipe 8 by the blower 3 again and mixed with the exhaust gas before entering the fluidized bed 1. This operation is circulated so that the powder can fully collide with the exhaust gas and be continuously recycled, and then treat VOC in a fluidized adsorption manner, thereby giving full play to the adsorption capacity of the zeolite powder.

[0030] Specifically, the collecting frame 12 runs through the middle of the supporting seat 13, and a discharge port is provided on the bottom surface of the collecting frame 12. The advantage is that the zeolite fluidized bed technology is adopted, and the gas mixing and penetrating double adsorption technology is utilized. The gas is first mixed and collided with the zeolite powder in the internal space of the mixing box 7, increasing the chance of the exhaust gas colliding with the adsorption material and increasing the adsorption efficiency. Then the gas passes through the surface of the filter 11 with the zeolite powder, so that the exhaust gas is further adsorbed. Through double adsorption, no matter how the concentration range of the gas concentration changes, the emission concentration can be kept to meet the emission standard. At the same time, the adsorption material is easy to replace. By using semi-mechanical addition and replacement, the adsorption material can be replaced with less manpower and labor intensity, and no blockage will occur due to impurities in the gas.

[0031] When in use, the powder enters the fluidized bed 1 directly through the feed pipe, and the circulating fan 10 is started to absorb from the inside of the fluidized bed 1 into the mixing box 7. At this time, the exhaust gas is sucked into the box through the air inlet pipe 8 and mixed evenly with the powder, thereby adsorbing VOC and being in the mixed adsorption stage. The powder enters the fluidized bed 1 and the zeolite powder is adsorbed on the surface of the filter 11 by the blower 3 in a negative pressure manner. On the surface of the filter 11, the VOC molecules are adsorbed by the zeolite powder and are in the penetration adsorption stage. However, under a certain pressure difference, the high-pressure air can The zeolite powder can be blown off the surface of the filter 11, and the collecting frame 12 can collect the blown zeolite powder and then use the blower 3 to transport it to the air inlet pipe 8 to mix with the exhaust gas and then re-enter the fluidized bed 1. This continuous cycle operation makes the zeolite powder fully utilized after being adsorbed to saturation. After a period of operation, the discarded nano zeolite powder is discharged from the powder discharge pipe at the side end of the collecting hopper 4 by the powder discharger 5, and the new zeolite powder is poured into the powder adding tank 2 and added into the fluidized bed 1, thereby completing the exhaust gas adsorption operation and facilitating the operation of the operator.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOC waste gas adsorption device, comprising a fluidized bed (1), a powder adding tank (2) is arranged on the front of the fluidized bed (1), a blower (3) is arranged on the side of the powder adding tank (2), a collecting hopper (4) is arranged on the bottom of the fluidized bed (1), and powder dischargers (5) are arranged at both ends of the collecting hopper (4), characterized in that: An exhaust pipe (6) is arranged on the back of the blower (3), a mixing box (7) is arranged on the back of the fluidized bed (1), an air inlet pipe (8) is arranged on the side of the mixing box (7), a circulation pipe (9) is arranged on the bottom of the mixing box (7), a circulation fan (10) is arranged on the front of the mixing box (7), a filter (11) is arranged on the inside of the fluidized bed (1), a collection frame (12) is arranged on the bottom of the filter (11), a support seat (13) is arranged on the bottom of the collection frame (12), a feed pipe (14) is arranged on the top of the fluidized bed (1), and a valve (15) is arranged on the front of the collecting hopper (4).

2. A VOC waste gas adsorption device according to claim 1, characterized in that: The front of the fluidized bed (1) is fixedly connected to the powder adding tank (2), and the two ends of the powder adding tank (2) are respectively fixedly connected to the through pipe and the feed pipe (14), and the feed pipe (14) is connected to the fluidized bed (1), and the through pipe is connected to the exhaust pipe (6), and the exhaust pipe (6) is located on the back of the through pipe. The collecting hopper (4) is fixedly installed on the bottom surface of the fluidized bed (1), and the collecting hopper (4) is connected to the fluidized bed (1).

3. The VOC waste gas adsorption device according to claim 1, characterized in that: The powder discharger (5) is fixedly mounted on the two ends of the back side of the collecting hopper (4), and the two ends of the powder discharger (5) are fixedly connected to the exhaust pipe, the mixing box (7) is fixedly mounted on the fluidized bed (1), and the front side of the mixing box (7) is fixedly connected to the circulating fan (10), the two ends of the circulating fan (10) are fixedly connected to the circulating pipe (9), and the circulating pipe (9) passes through the mixing box (7) and the collecting hopper (4).

4. The VOC waste gas adsorption device according to claim 1, characterized in that: The air inlet pipe (8) is connected to the exhaust pipe (6) and the mixing box (7) respectively, the circulating fan (10) is fixedly connected to the lifting pump, the filter (11) is fixedly installed on the top inner side of the fluidized bed (1), and the bottom surface of the filter (11) is fixedly connected to the collection frame (12).

5. The VOC waste gas adsorption device according to claim 1, characterized in that: The collecting frame (12) passes through the middle of the supporting seat (13), and a discharge port is provided on the bottom surface of the collecting frame (12).

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