Activated carbon exhaust gas treatment system

Abstract

The utility model discloses an active carbon waste gas treatment system, including oven main part, the oven filter screen of oven main part's upper end left and right side position department is provided with, the organic waste gas that high pressure atomization spraying and oven baking produce, on the basis of conventional waste gas treatment mode and means, research and development active carbon waste gas treatment system, namely the organic waste gas that high pressure atomization produces, under the action of exhaust fan, after further filtration of prefiltering tank, finally is transported to pre -de -fogging tank, after the filtration of pre -de -fogging tank, enter active carbon adsorption purification device, and the waste gas after purification treatment is qualified, under the action of exhaust fan and pipeline, through high altitude chimney, active carbon waste gas treatment system's waste gas purification treatment capacity is outstanding, and the problem that organic waste gas can not be purified and handled effectively is solved perfectly, and organic waste gas gets thorough purification and processing, and the influence and pollution to air environment are eliminated.

Description

Technical Field

[0001] This utility model belongs to the technical field of activated carbon waste gas treatment systems, and specifically relates to an activated carbon waste gas treatment system. Background Technology

[0002] Activated carbon waste gas treatment systems are complete sets of equipment that utilize the adsorption properties of activated carbon to purify waste gas generated during industrial production processes. The system introduces waste gas through a waste gas fan, first passing through a pre-filter to remove dust and other particulate matter, and then entering the activated carbon adsorption purification equipment. The porous structure of activated carbon adsorbs pollutants such as volatile organic compounds in the waste gas. Some systems can also combine pretreatment and post-treatment. The purified gas is transported by an exhaust fan and discharged through a high-altitude chimney in compliance with emission standards, achieving waste gas treatment and environmental protection. It is widely used in industries such as chemical, coating, and printing.

[0003] After casting and machining, the wheel hubs are polished and then applied to the painting line. Following pretreatment and painting processes, a uniform coating is formed on the surface of the aluminum alloy wheel hub, improving its aesthetics and enhancing its corrosion resistance and impact resistance to meet the needs of different customers. The core of the painting process is a three-spray, three-bake system: a three-spray booth (powder primer, liquid spray, and powder penetration spray) and a three-bake oven (powder primer, liquid oven, and powder penetration oven). During the painting process, the paint evaporates and produces organic waste gas after high-pressure atomization spraying and high-temperature baking in the oven. Conventional treatment methods for this organic waste gas include using a water curtain filtration system and matching filters to filter the high-pressure atomization sprayed organic waste gas before it is discharged into the air through exhaust fans and ducts via a high-altitude chimney. Similarly, the high-temperature organic waste gas generated during the oven baking process is also directly discharged into the air through exhaust fans and ducts via a high-altitude chimney, both of which contribute to air pollution. Utility Model Content

[0004] The purpose of this utility model is to provide an activated carbon waste gas treatment system to address the issues raised in the background art regarding cast and machined wheel hubs. After grinding and finishing, the system involves pretreatment and coating processes to form a uniform coating on the surface of the aluminum alloy wheel hub, improving its aesthetics and enhancing its corrosion resistance and impact resistance to meet the needs of different customers. The core of the coating process is a three-spray, three-bake system: a three-spray booth (powder primer, liquid spray, and powder penetration spray) and a three-bake oven (powder primer oven, liquid oven, and powder penetration oven). During the coating production process, the paint undergoes high-pressure atomization spraying and high-temperature baking in the oven, which generates volatile organic waste gas. Conventional treatment methods for the organic waste gas generated in the coating spraying process involve filtering the organic waste gas generated by high-pressure atomization spraying through a water curtain filtration system and matching filter screens, and then discharging it into the air through exhaust fans and ducts via a high-altitude chimney. However, the high-temperature organic waste gas generated during the oven baking process is also directly discharged into the air through exhaust fans and ducts via a high-altitude chimney, both of which have a certain impact on the air environment and cause pollution problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an activated carbon waste gas treatment system, comprising an oven body, an oven filter screen provided on the upper left and right sides of the oven body, a natural gas combustion chamber provided on the upper end of the oven filter screen, the natural gas combustion chamber introducing waste gas through an intake fan A at the left end, an exhaust fan C connected to the oven body at one end via a pipe, a water cooling box connected to the exhaust fan C at the other end via a pipe, circulating water pipes provided on the lower left and right sides of the water cooling box, a cooling tower connected to the other end of the circulating water pipes, a flow pipe B connected to the left end of the water cooling box, and the other end of the flow pipe B leading to the flow pipe A; An exhaust fan A is connected to the other end of the flow pipe A. A pre-filter box is installed at the other end of the exhaust fan A. The pre-filter box is connected to a water curtain body at the other end via a pipe. A high-pressure atomizing spraying box is installed at the right end of the water curtain body. An air intake fan B is connected to the high-pressure atomizing spraying box at the upper end via a pipe.

[0006] Preferably, an activated carbon adsorption purification device is connected to the left end of the flow pipe A, and a pre-demist is provided at the right end of the activated carbon adsorption purification device.

[0007] Preferably, an exhaust fan B is connected to the left end of the activated carbon adsorption purification device, and the exhaust fan B discharges the gas through a high-altitude chimney at the upper end.

[0008] Preferably, a pleated filter screen and a bag filter screen are provided inside the pre-filter box, which enhance the filtration effect on organic waste gas.

[0009] Preferably, both the high-pressure spray coating box and the water curtain body are equipped with filters at the upper part of their interiors. Exhaust gas passes through the filters and enters the interior of the high-pressure spray coating box, while the water curtain body transports the exhaust gas through the filters to the pre-filter box.

[0010] Preferably, the natural gas combustion chamber delivers exhaust gas through the oven filter to the oven body, and the oven body delivers the gas to the water-cooled box through the exhaust fan C.

[0011] Preferably, the flow pipe B delivers the gas to the flow pipe A, and the flow pipe A delivers the incoming gas to the activated carbon adsorption purification device. Before entering the activated carbon adsorption purification device, the gas first passes through the pre-demist at the right end of the activated carbon adsorption purification device.

[0012] Preferably, a pretreatment purification chamber is installed at one end of both the intake fan B and the intake fan A. A catalytic coating is provided on the inner wall of the pretreatment purification chamber, and a coarse metal mesh is fixed on the inner wall of the pretreatment purification chamber.

[0013] Compared with the prior art, this utility model provides an activated carbon waste gas treatment system, which has the following beneficial effects: 1. Organic waste gas generated from high-pressure atomization spraying and oven baking is treated using an activated carbon waste gas treatment system, building upon conventional waste gas treatment methods. The organic waste gas generated by high-pressure atomization is further filtered by a pre-filter box under the action of an exhaust fan before being transported to the activated carbon waste gas treatment system. The high-temperature organic waste gas generated by oven baking is cooled to a certain temperature by an exhaust fan and pipelines, and then transported to the activated carbon waste gas treatment system. Both types of organic waste gas are ultimately transported to a pre-demist box via exhaust fans and pipelines. After filtration in the pre-demist box, the waste gas enters the activated carbon adsorption purification device. The purified waste gas is then discharged through a high-altitude chimney under the action of an exhaust fan and pipelines. The activated carbon waste gas treatment system boasts outstanding waste gas purification capabilities, perfectly solving the problem of ineffective purification and treatment of organic waste gas. The organic waste gas is thoroughly purified and treated, eliminating its impact and pollution on the air environment.

[0014] 2. A pretreatment purification chamber is installed at the exhaust gas inlet. The chamber contains a coarse metal mesh and a catalytic coating on its inner wall. The coarse metal mesh intercepts larger particles of dust, debris, and other solid pollutants in the exhaust gas, preventing these particles from entering the subsequent activated carbon adsorption purification equipment. This prevents the activated carbon pores from becoming clogged, extending its lifespan and reducing the frequency of replacement. Furthermore, the catalytic coating on the inner wall, when the exhaust gas temperature is suitable, utilizes the exhaust gas's own heat or external auxiliary waste heat to perform preliminary catalytic decomposition of some easily oxidizable volatile organic compounds and other catalytically reactive pollutants in the exhaust gas. This transforms them into relatively harmless or easier-to-treat substances, reducing the concentration of pollutants in the exhaust gas and the difficulty of treatment, thereby improving the purification efficiency of subsequent activated carbon adsorption and the entire exhaust gas treatment system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an activated carbon waste gas treatment system according to the present invention.

[0016] Figure 2 This is a schematic cross-sectional view of the pretreatment purification chamber of an activated carbon waste gas treatment system according to the present invention.

[0017] In the diagram: 1. Oven body; 2. Oven filter screen; 3. Natural gas combustion chamber; 4. Intake fan A; 5. High-pressure spray coating box; 6. Water curtain body; 7. Bag filter screen; 8. Pleated filter screen; 9. Intake fan B; 10. Pretreatment purification chamber; 11. Pre-filter box; 12. Exhaust fan A; 13. Flow pipe A; 14. Activated carbon adsorption purification device; 15. High-altitude chimney; 16. Exhaust fan B; 17. Flow pipe B; 18. Water cooling box; 19. Circulating water flow pipe; 20. Cooling tower; 21. Exhaust fan C; 22. Catalytic coating; 23. Coarse metal mesh; 24. Pre-demist. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model provides, for example Figure 1-2 The activated carbon exhaust gas treatment system shown includes an oven body 1. Oven filters 2 are installed on the upper left and right sides of the oven body 1. A natural gas combustion chamber 3 is installed above the oven filters 2. Exhaust gas is introduced into the natural gas combustion chamber 3 by an intake fan A4 located on the left side. An exhaust fan C21 is connected to one end of the oven body 1 via a pipe. A water-cooled box 18 is connected to the other end of the exhaust fan C21 via a pipe. Circulating water pipes 19 are installed on the lower left and right sides of the water-cooled box 18. The other end of the circulating water pipes 19... A cooling tower 20 is connected to the water-cooled box 18. A flow pipe B17 is connected to the left end of the water-cooled box 18. The other end of the flow pipe B17 leads to a flow pipe A13. An exhaust fan A12 is connected to the other end of the flow pipe A13. A pre-filter box 11 is installed at the other end of the exhaust fan A12. A water curtain body 6 is connected to the other end of the pre-filter box 11 through a pipe. A high-pressure spray coating box 5 is installed at the right end of the water curtain body 6. An air intake fan B9 is connected to the upper end of the high-pressure spray coating box 5 through a pipe.

[0021] The organic waste gas generated by high-pressure atomization spraying and oven baking is treated using an activated carbon waste gas treatment system, building upon conventional waste gas treatment methods. The organic waste gas generated by high-pressure atomization is further filtered by a pre-filter box 11 under the action of an exhaust fan before being transported to the activated carbon waste gas treatment system. The high-temperature organic waste gas generated by oven baking is cooled to a certain temperature by an exhaust fan and pipelines, under the action of a cooling tower 20 and a water-cooled box 18, before being transported to the activated carbon waste gas treatment system. Both types of organic waste gas are ultimately transported to a pre-demist box via exhaust fans and pipelines. After filtration by the pre-demist box, the waste gas enters an activated carbon adsorption purification device 14. The purified waste gas is then discharged through a high-altitude chimney 15 under the action of an exhaust fan and pipelines. The activated carbon waste gas treatment system has outstanding waste gas purification capabilities, perfectly solving the problem of ineffective purification and treatment of organic waste gas. The organic waste gas is thoroughly purified and treated, eliminating its impact and pollution on the air environment.

[0022] like Figure 1 As shown, an activated carbon adsorption purification device 14 is connected to the left end of the flow pipe A13, a pre-demist 24 is installed at the right end of the activated carbon adsorption purification device 14, and an exhaust fan B16 is connected to the left end of the activated carbon adsorption purification device 14. The exhaust fan B16 discharges the gas through the high-altitude chimney 15 at the upper end. A pleated filter screen 8 and a bag filter screen 7 are installed inside the pre-filter box 11 to enhance the filtration effect of organic waste gas. Filter screens are installed at the upper part of the high-pressure spray coating box 5 and the water curtain body 6. The waste gas passes through the filter screen and enters the interior of the high-pressure spray coating box 5. The water curtain body 6 then passes the waste gas through... The filter screen is transported to the pre-filter box 11. The natural gas combustion chamber 3 transports the exhaust gas through the oven filter screen 2 to the oven body 1. The oven body 1 transports the gas to the water cooling box 18 through the exhaust fan C21. The flow pipe B17 transports the gas to the flow pipe A13. The flow pipe A13 transports the gas into the activated carbon adsorption purification device 14. Before entering the activated carbon adsorption purification device 14, the gas passes through the pre-demist 24. A pre-treatment purification chamber 10 is installed at one end of the air intake fan B9 and the air intake fan A4. A catalytic coating 22 is provided on the inner wall of the pre-treatment purification chamber 10. A coarse metal mesh 23 is fixed on the inner wall of the pre-treatment purification chamber 10.

[0023] A cooling tower 20 and a water-cooled box 18 are added. The cooling tower 20 automatically circulates water to replenish the water-cooled box 18. During the baking process, high-temperature organic waste gas is generated and enters the water-cooled box 18 through the matching exhaust fan and pipeline. After being cooled to a certain temperature, it enters the activated carbon waste gas treatment system. Before the activated carbon purification treatment, a pre-mist demister 24 is added. The pre-filter is installed inside the demister. The pre-filter in the pre-mist demister 24 performs the first filtration of the organic waste gas. An activated carbon adsorption purification device 14 is added. Activated carbon is a black adsorbent made of carbon-containing materials. It has a well-developed internal pore structure, a large specific surface area, strong adsorption capacity, and a non-polar surface. It is hydrophobic and organic-loving. When the waste gas passes through the activated carbon layer, it is adsorbed on the activated carbon by the unbalanced molecular attraction or chemical bonds on the carbon surface, thereby achieving the purpose of waste gas purification.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 waste gas treatment system, characterized in that, The oven includes a main body (1), with oven filters (2) installed on the upper left and right sides of the main body (1), and a natural gas combustion chamber (3) installed on the upper part of the oven filters (2). The natural gas combustion chamber (3) introduces exhaust gas through an intake fan A (4) at the left end. The main body (1) is connected to an exhaust fan C (21) at one end through a pipe. The exhaust fan C (21) is connected to a water cooling box (18) at the other end through a pipe. Circulating water pipes (19) are installed on the lower left and right sides of the water cooling box (18). A cooling tower (20) is connected to the other end of the circulating water pipes (19). A flow pipe B (17) is connected to the left end of the water cooling box (18). The other end of the flow pipe B (17) leads to the flow pipe A (13). An exhaust fan A (12) is connected to the other end of the flow pipe A (13). A pre-filter box (11) is provided at the other end of the exhaust fan A (12). A water curtain body (6) is connected to the other end of the pre-filter box (11) through a pipe. A high-pressure spray coating box (5) is provided at the right end of the water curtain body (6). An air intake fan B (9) is connected to the upper end of the high-pressure spray coating box (5) through a pipe.

2. The activated carbon waste gas treatment system according to claim 1, characterized in that: An activated carbon adsorption purification device (14) is connected to the left end of the flow pipe A (13), and a pre-demister (24) is provided at the right end of the activated carbon adsorption purification device (14).

3. The activated carbon waste gas treatment system according to claim 2, characterized in that: An exhaust fan B (16) is connected to the left end of the activated carbon adsorption purification device (14), and the exhaust fan B (16) discharges the gas through the high-altitude chimney (15) at the upper end.

4. The activated carbon waste gas treatment system according to claim 1, characterized in that: The pre-filter box (11) is equipped with a pleated filter screen (8) and a bag filter screen (7) inside, which enhance the filtration effect on organic waste gas.

5. The activated carbon waste gas treatment system according to claim 1, characterized in that: Both the high-pressure spray coating box (5) and the water curtain body (6) are equipped with filters at the upper part of their interiors. The exhaust gas passes through the filters and enters the interior of the high-pressure spray coating box (5). The water curtain body (6) then transports the exhaust gas through the filters to the pre-filter box (11).

6. The activated carbon waste gas treatment system according to claim 1, characterized in that: The natural gas combustion chamber (3) delivers the exhaust gas through the oven filter (2) to the oven body (1), and the oven body (1) delivers the gas to the water cooling box (18) through the exhaust fan C (21).

7. The activated carbon waste gas treatment system according to claim 2, characterized in that: The flow pipe B (17) delivers the gas to the flow pipe A (13), and the flow pipe A (13) delivers the gas into the activated carbon adsorption purification device (14). Before entering the activated carbon adsorption purification device (14), the gas passes through the pre-demistor (24) at the right end of the activated carbon adsorption purification device (14).

8. The activated carbon waste gas treatment system according to claim 1, characterized in that: A pretreatment purification chamber (10) is installed at one end of both the intake fan B (9) and the intake fan A (4). A catalytic coating (22) is provided on the inner wall of the pretreatment purification chamber (10), and a coarse metal mesh (23) is fixed on the inner wall of the pretreatment purification chamber (10).

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