Active carbon chemical filter for removing VOC (Volatile Organic Compounds)

Abstract

The utility model relates to the related technical field of activated carbon filters, and discloses an activated carbon chemical filter for removing VOC (volatile organic compounds), which comprises a heat absorption tank and an adsorption tank, a connecting pipe is fixedly connected between the heat absorption tank and the adsorption tank, and a compressor is fixedly mounted in the connecting pipe; according to the utility model, the two groups of gas cylinders are arranged to realize pressurization and secondary cooling of flue gas, so that VOC gas in the gas is condensed and settled, then the condensed and settled VOC gas is adsorbed through the activated carbon adsorption cylinder, then the adsorbed VOC gas can be subjected to rapid pressure reduction evaporation through the pressure reduction setting, and the scheme is simple in structure and low in cost. The device is simple in structure, convenient to use, easy to implement, free of repeated maintenance and free of secondary pollution, the use cost and the maintenance cost of the device are reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of activated carbon filters, specifically an activated carbon chemical filter for removing VOCs. Background Technology

[0002] Volatile organic compounds (VOCs) are common and ubiquitous air pollutants. Common components include hydrocarbons, benzene compounds, alcohols, ketones, phenols, aldehydes, esters, amines, and nitriles (cyanides). VOCs undergo photochemical reactions under sunlight, leading to increases in photochemical smog, secondary organic aerosols, and atmospheric organic acids. This can damage the ozone layer, is a significant cause of haze (PM2.5), and also exhibits toxicity, irritant properties, and carcinogenicity, posing a considerable threat to human health.

[0003] VOCs mainly originate from two sources: stationary sources and mobile sources. Mobile sources primarily include emissions from vehicles such as automobiles, ships, and airplanes that use petroleum products as fuel. Stationary sources are diverse, mainly consisting of emissions from petrochemical processes and storage equipment, as well as various applications using organic solvents, such as painting, printing, metal degreasing and greasing, adhesives, pharmaceuticals, and plastics and rubber processing. Therefore, VOC recovery and treatment are of great importance to these industries.

[0004] Currently, the main technologies used for VOC recovery fall into two categories: physical methods and chemical methods. Physical methods primarily enrich and separate VOCs by changing temperature and pressure, or by using selective adsorbents and selective permeation membranes. Chemical methods include direct combustion, thermal oxidation, catalytic combustion, biological oxidation, plasma methods, ultraviolet photocatalytic oxidation, and their integrated technologies. These methods mainly use chemical or biochemical reactions, employing heat, light, catalysts, or microorganisms to transform VOCs into non-toxic inorganic small molecule compounds such as CO2 and water. Traditionally, VOC waste gas treatment often employs adsorption or absorption removal, or combustion removal. While these traditional methods are simple in principle and easy to implement, they all have certain drawbacks and limitations. For example, adsorption methods have a high selectivity and dependence on adsorbents, and most adsorbents gradually lose their activity after repeated long-term use, thus requiring replacement every three to five years. Although combustion methods can convert most of the organic matter in VOCs into environmentally harmless H2O and CO2, the complex composition of VOCs and the varying combustion temperatures, coupled with excessive air intake leading to high fuel consumption and reduced furnace temperature causing incomplete combustion, can easily cause secondary pollution to the environment. Utility Model Content

[0005] The purpose of this invention is to provide an activated carbon chemical filter for removing VOCs, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An activated carbon chemical filter for removing VOCs includes a heat absorption tank and an adsorption tank, wherein a connecting pipe is fixedly connected between the heat absorption tank and the adsorption tank, and a compressor is fixedly installed inside the connecting pipe.

[0008] A first evaporator is fixedly connected to the outer wall of the heat absorption tank, and a first heat-conducting block is fixedly connected to the inner wall of the heat absorption tank. One end of the first heat-conducting block is located inside the heat absorption tank, and the other end of the first heat-conducting block is located inside the first evaporator.

[0009] A second evaporator is fixedly connected to the outer wall of the adsorption tank, and a second heat-conducting block is fixedly connected to the inner wall of the adsorption tank. One end of the second heat-conducting block is located inside the adsorption tank, and the other end of the second heat-conducting block is located inside the second evaporator.

[0010] The bottom of the heat absorption tank is fixedly connected to a first threaded mounting seat, and the first threaded mounting seat is internally threaded to a first sealing thread head. The top of the heat absorption tank is fixedly connected to a sealing connecting pipe, and a sealing connecting cylinder is slidably connected to the sealing connecting pipe. A filter element is fixedly connected between the sealing connecting cylinder and the first sealing thread head.

[0011] The bottom of the adsorption tank is fixedly connected to a second threaded mounting base, the second threaded mounting base is internally threaded with a second sealing thread head, the second sealing thread head is fixedly connected with a positioning rod, and the positioning rod is slidably connected to an activated carbon adsorption cylinder.

[0012] As a further embodiment of this utility model: a connector is fixedly connected to the top of the heat absorption tank, and the connector is connected to the exhaust device.

[0013] As a further embodiment of this invention, an air outlet pipe is fixedly connected to the top of the adsorption tank.

[0014] As a further embodiment of this utility model: a pressure reducing and stabilizing valve is installed inside the air outlet pipe.

[0015] As a further improvement of this utility model, an exhaust port is provided on the top of the adsorption tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves pressurization and secondary cooling of flue gas through the setting of two sets of gas cylinders, thereby condensing and settling the VOC gas in the gas. Then, the condensed and settling VOC gas is adsorbed by the activated carbon adsorption cylinder. Then, the adsorbed VOC gas can be rapidly depressurized and evaporated by the depressurization setting. Moreover, this solution has a simple structure, is easy to use and implement, requires no repeated maintenance, does not produce secondary pollution, and reduces the use and maintenance costs of the equipment, thereby improving the practicality of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an activated carbon chemical filter for removing VOCs according to the present invention.

[0018] Figure 2 This is a schematic diagram of the filter element in an activated carbon chemical filter for removing VOCs according to the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of an activated carbon chemical filter for removing VOCs according to the present invention.

[0020] Figure 4 This is a schematic diagram of the adsorption tank in an activated carbon chemical filter for removing VOCs according to the present invention.

[0021] Figure 5 This is a schematic diagram of the heat-absorbing tank in an activated carbon chemical filter for removing VOCs according to the present invention.

[0022] In the diagram: 1-Heat absorption tank, 2-Adsorption tank, 3-Connecting pipe, 4-Compressor, 5-First threaded mounting base, 6-First sealing thread head, 7-Connector, 8-Sealed connecting pipe, 9-Sealed connecting cylinder, 10-Filter element, 11-First heat conduction block, 12-First evaporator, 13-Second threaded mounting base, 14-Second sealing thread head, 15-Positioning rod, 16-Activated carbon adsorption cylinder, 17-Second heat conduction block, 18-Second evaporator, 19-Outlet pipe, 20-Pressure reducing and stabilizing valve, 21-Exhaust port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See Figures 1-5In this embodiment of the utility model, an activated carbon chemical filter for removing VOCs includes a heat absorption tank 1 and an adsorption tank 2. A connecting pipe 3 is fixedly connected between the heat absorption tank 1 and the adsorption tank 2, and a compressor 4 is fixedly installed inside the connecting pipe 3.

[0025] A first evaporator 12 is fixedly connected to the outer wall of the heat absorption tank 1, and a first heat-conducting block 11 is fixedly connected to the inner wall of the heat absorption tank 1. One end of the first heat-conducting block 11 is disposed inside the heat absorption tank 1, and the other end of the first heat-conducting block 11 is disposed inside the first evaporator 12.

[0026] A second evaporator 18 is fixedly connected to the outer wall of the adsorption tank 2, and a second heat-conducting block 17 is fixedly connected to the inner wall of the adsorption tank 2. One end of the second heat-conducting block 17 is located inside the adsorption tank 2, and the other end of the second heat-conducting block 17 is located inside the second evaporator 18.

[0027] The bottom of the heat absorption tank 1 is fixedly connected to a first threaded mounting seat 5, and the first threaded mounting seat 5 is internally threaded to a first sealing thread head 6. The top of the heat absorption tank 1 is fixedly connected to a sealing connecting pipe 8, and a sealing connecting cylinder 9 is slidably connected to the sealing connecting pipe 8. A filter element 10 is fixedly connected between the sealing connecting cylinder 9 and the first sealing thread head 6.

[0028] The bottom of the adsorption tank 2 is fixedly connected to a second threaded mounting base 13. The second threaded mounting base 13 is internally threaded to a second sealing thread head 14. A positioning rod 15 is fixedly connected to the second sealing thread head 14. An activated carbon adsorption cylinder 16 is slidably connected to the positioning rod 15.

[0029] The heat absorption tank 1 is fixedly connected to the top of the connector 7, the adsorption tank 2 is fixedly connected to the top of the air outlet pipe 19, the air outlet pipe 19 is equipped with a pressure reducing and stabilizing valve 20, and the adsorption tank 2 is provided with an exhaust port 21.

[0030] This utility model connects to an exhaust device via connector 7, and injects flue gas into the heat absorption tank 1 through the exhaust device. During this process, the filter element 10 filters out dust from the flue gas. The gas then passes through the filter element 10 and enters the heat absorption tank 1. At this point, the heat in the heat absorption tank 1 can be discharged through the first heat-conducting block 11 and the first evaporator 12. Then, the low-temperature flue gas is drawn into the compressor 4 along the connecting pipe 3 by the compressor 4, thereby compressing the low-temperature flue gas. The compressed flue gas is discharged into the adsorption tank 2. As the compressor 4 compresses the gas in the heat absorption tank 1 and injects it into the adsorption tank 2, the gas pressure in the adsorption tank 2 gradually increases. As the pressure in the adsorption tank 2 increases, the temperature in the adsorption tank 2 gradually rises. At this point, the gas can be discharged through the second heat-conducting block 17 and the first evaporator 12. The second evaporator 18 removes heat from the adsorption tank 2. At this time, the temperature inside the adsorption tank 2 decreases and the pressure increases. The VOC gas in the flue gas condenses and settles. Then, when the gas pressure exceeds the safety value of the pressure reducing and stabilizing valve 20, the pressure reducing and stabilizing valve 20 opens, and the remaining gas is discharged along the outlet pipe 19. At this time, the VOC gas condensed and settled in the adsorption tank 2 can be adsorbed by the activated carbon adsorption cylinder 16. Then, when it is necessary to discharge the VOC adsorbed by the activated carbon in the adsorption tank 2, simply open the exhaust port 21 and connect the suction device to the exhaust port 21. At this time, as the gas in the adsorption tank 2 is discharged, the gas pressure in the adsorption tank 2 decreases. At this time, the condensed VOC gas adsorbed by the activated carbon adsorption cylinder 16 evaporates rapidly under pressure, and the evaporated VOC is discharged along the exhaust port 21.

[0031] Furthermore, the present invention can facilitate the quick disassembly, cleaning and replacement of the filter element 10 through the threaded connection between the first threaded mounting base 5 and the first sealing threaded head 6, and can also facilitate the quick replacement of the activated carbon adsorption cylinder 16 through the threaded connection between the first threaded mounting base 5 and the first sealing threaded head 6.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An activated carbon chemical filter for removing VOCs, comprising an endothermic tank and an adsorption tank, characterized in that, A connecting pipe is fixedly connected between the heat absorption tank and the adsorption tank, and a compressor is fixedly installed inside the connecting pipe. A first evaporator is fixedly connected to the outer wall of the heat absorption tank, and a first heat-conducting block is fixedly connected to the inner wall of the heat absorption tank. One end of the first heat-conducting block is located inside the heat absorption tank, and the other end of the first heat-conducting block is located inside the first evaporator. A second evaporator is fixedly connected to the outer wall of the adsorption tank, and a second heat-conducting block is fixedly connected to the inner wall of the adsorption tank. One end of the second heat-conducting block is located inside the adsorption tank, and the other end of the second heat-conducting block is located inside the second evaporator. The bottom of the heat absorption tank is fixedly connected to a first threaded mounting seat, and the first threaded mounting seat is internally threaded to a first sealing thread head. The top of the heat absorption tank is fixedly connected to a sealing connecting pipe, and a sealing connecting cylinder is slidably connected to the sealing connecting pipe. A filter element is fixedly connected between the sealing connecting cylinder and the first sealing thread head. The bottom of the adsorption tank is fixedly connected to a second threaded mounting base, the second threaded mounting base is internally threaded with a second sealing thread head, the second sealing thread head is fixedly connected with a positioning rod, and the positioning rod is slidably connected to an activated carbon adsorption cylinder.

2. The VOC removal activated carbon chemical filter according to claim 1, wherein, A connector is fixedly connected to the top of the heat absorption tank, and the connector is connected to the exhaust equipment.

3. The VOC removal activated carbon chemical filter according to claim 1, wherein, An outlet pipe is fixedly connected to the top of the adsorption tank.

4. The VOC removal activated carbon chemical filter according to claim 3, wherein, A pressure reducing and stabilizing valve is installed inside the air outlet pipe.

5. The VOC removal activated carbon chemical filter according to claim 1, wherein, The adsorption tank is equipped with an exhaust port at the top.

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