A device for filtering and treating chemical waste gas

Abstract

The utility model relates to chemical waste gas treatment technical field discloses a kind of for chemical waste gas filtration treatment device, including base, the upper portion of the base is evenly provided with multiple support plates, front end the support plate upper end is provided with first reaction bin, rear end the support plate upper end is provided with second reaction bin, the middle part of first reaction bin front end is provided with air inlet pipe, the top of first reaction bin rear end is provided with lye spraying mechanism, the middle part of first reaction bin is provided with first fixed ring, the junction between first reaction bin and second reaction bin is provided with second fixed ring, the middle part of second reaction bin is provided with third fixed ring, the rear portion of second reaction bin inner wall is provided with ultraviolet sterilization mechanism.In the utility model, ultraviolet sterilization mechanism is set, chemical waste gas is irradiated by ultraviolet to sterilize, to avoid subsequent filter material to breed bacteria and affect purification effect, set lye spraying mechanism, neutralize acidic gas in waste gas, further purify waste gas.

Description

Technical Field

[0001] This utility model relates to the field of chemical waste gas treatment technology, and in particular to a device for filtering and treating chemical waste gas. Background Technology

[0002] Chemical waste gas refers to the toxic and harmful gases discharged from chemical plants during chemical production. Chemical waste gas often contains a wide variety of pollutants with complex physical and chemical properties and varying toxicity levels. It pollutes the environment and affects human health. The composition of chemical waste gas varies greatly from industry to industry. For example, the waste gas generated by the chlor-alkali industry mainly contains chlorine, hydrogen chloride, vinyl chloride, mercury, acetylene, etc., while the waste gas generated by the nitrogen fertilizer industry mainly contains nitrogen oxides, urea dust, carbon monoxide, ammonia, sulfur dioxide, methane, etc., as well as automobile exhaust.

[0003] Currently, widely used chemical waste gas filtration and treatment devices generally suffer from problems such as excessive acidity and corrosiveness of the treated waste gas, which are still harmful to the human body, and neglect of microorganisms in the gas during treatment, leading to bacterial growth in the filter media in the reaction chamber and affecting purification efficiency.

[0004] Therefore, those skilled in the art have provided a device for filtering and treating chemical waste gas to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a chemical waste gas filtration and treatment device. This device incorporates an ultraviolet sterilization mechanism to irradiate the pre-treated chemical waste gas with ultraviolet light, causing it to decompose into simple inorganic substances. Simultaneously, it inactivates some microorganisms in the waste gas, preventing bacterial growth on subsequent filter media from affecting the purification effect. An alkaline spray mechanism is also included, which uses a certain concentration of alkaline solution to neutralize acidic gases in the waste gas, generating harmless salts. An internal porous sieve plate increases the contact area between the alkaline solution and the waste gas, ensuring a more complete neutralization reaction. Simultaneously, it intercepts some fine dust particles that are not separated by the cyclone separator, further purifying the waste gas.

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

[0007] A chemical waste gas filtration and treatment device includes a base, with multiple support plates evenly arranged on the upper part of the base. A first reaction chamber is provided at the upper end of the front support plate, and a second reaction chamber is provided at the upper end of the rear support plate. An air inlet pipe is provided at the middle of the front end of the first reaction chamber, and an alkaline spraying mechanism is provided at the top of the rear end of the first reaction chamber. A first fixing ring is provided in the middle of the first reaction chamber, a second fixing ring is provided at the connection between the first and second reaction chambers, and a third fixing ring is provided in the middle of the second reaction chamber. An ultraviolet sterilization mechanism is provided on the rear inner wall of the second reaction chamber. The ultraviolet sterilization mechanism includes a fixing plate, a pair of L-shaped plates symmetrically arranged on the side wall of the fixing plate, and screws fixing the side wall of the L-shaped plates. A collar is provided at one end of the L-shaped plate, and an ultraviolet lamp is arranged between the collars. Filament fixing blocks are provided at the connection between the two ends of the ultraviolet lamp and the L-shaped plate.

[0008] The above technical solution involves using ultraviolet irradiation to sterilize the pre-treated chemical waste gas, breaking the chemical bonds of residual small-molecule organic pollutants in the waste gas and decomposing them into simple inorganic substances. At the same time, it can inactivate some microorganisms in the waste gas, preventing the subsequent filter material from breeding bacteria and affecting the purification effect.

[0009] Furthermore, a blower pipe is connected to the rear end of the second reaction chamber, and a fourth fixing ring is provided on the outside of the blower pipe;

[0010] The above technical solution involves installing a blower duct to enhance the airflow of the negative pressure induced draft fan, preventing chemical waste gas from remaining in the device and causing corrosion.

[0011] Furthermore, a protective pipe is connected to the rear end of the blower pipe, a load-bearing plate is provided on the outside of the protective pipe, the rear end of the protective pipe is connected to the motor, and a negative pressure fan is provided at the front end of the motor;

[0012] The above technical solution stabilizes the airflow output of the negative pressure exhaust fan, preventing excessive wind from causing the device to shake and resulting in economic losses.

[0013] Furthermore, a spiral gas delivery pipe is provided at the rear end of the air inlet pipe, an anti-corrosion treatment chamber is provided at the rear end of the spiral gas delivery pipe, and an alkaline spraying mechanism is provided at the upper end of the anti-corrosion treatment chamber.

[0014] The above technical solution involves setting up a spiral gas conveying pipe to guide the chemical waste gas into the device in a spiral shape. Large dust particles are initially separated by centrifugal force, which makes the waste gas form a stable airflow in the subsequent separator, improves the separation efficiency, avoids dust directly impacting the subsequent filter components, and passes the chemical waste gas into the anti-corrosion treatment chamber, which facilitates the acid-base neutralization reaction of the waste gas by the alkaline spraying mechanism.

[0015] Furthermore, the alkaline spraying mechanism includes an infusion pipe, with limit plates symmetrically arranged at the upper end of the infusion pipe, a valve arranged between the limit plates, and a sprayer arranged at the upper bottom of the infusion pipe;

[0016] The above technical solution uses a certain concentration of alkaline solution to spray and neutralize the acidic gases in the waste gas, generating harmless salts. The built-in porous sieve plate increases the contact area between the alkaline solution and the waste gas, making the neutralization reaction more complete. At the same time, it intercepts some of the fine dust that is not separated by the cyclone, further purifying the waste gas.

[0017] Furthermore, a precious metal catalyst mesh is provided at the front end of the second reaction chamber, an isolation plate is provided in the middle of the second reaction chamber, and multiple nuts are evenly provided on the side wall of the first fixing ring.

[0018] Through the above technical solution, the residual gas that is not fully adsorbed is oxidized and decomposed into harmless substances through the catalytic effect of the alloy coating, resulting in higher degradation efficiency and complete elimination of the environmental hazards of organic pollutants.

[0019] Furthermore, modified activated carbon is filled between the precious metal catalytic mesh and the separator plate;

[0020] The above technical solution utilizes the strong adsorption properties of modified activated carbon to capture special gases and malodorous substances in waste gas, achieving high adsorption efficiency and ensuring good filtration results.

[0021] Furthermore, the inner sidewall of the corrosion-resistant treatment chamber is coated with a fluorocarbon resin coating;

[0022] The above technical solutions enhance the oxidation and corrosion resistance of the anti-corrosion treatment chamber, thereby extending the service life of the equipment.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model proposes a chemical waste gas filtration and treatment device. By setting up an ultraviolet sterilization mechanism, the chemical waste gas that has undergone preliminary treatment is sterilized by ultraviolet irradiation, which decomposes it into simple inorganic substances. At the same time, it can inactivate some microorganisms in the waste gas, so as to avoid the subsequent filter material from growing bacteria and affecting the purification effect. A spiral air conveyor is set up to guide the chemical waste gas into the device in a spiral shape. Large dust particles are initially separated by centrifugal force, so that the waste gas forms a stable airflow in the subsequent separator, improving the separation efficiency and preventing dust from directly impacting the subsequent filter components.

[0025] 2. This utility model proposes a chemical waste gas filtration device, which is equipped with an alkaline spraying mechanism. By spraying alkaline solution of a certain concentration, the acidic gases in the waste gas are neutralized to generate harmless salts. The built-in porous sieve plate increases the contact area between the alkaline solution and the waste gas, making the neutralization reaction more complete. At the same time, it intercepts some fine dust that is not separated by the cyclone, further purifying the waste gas. A precious metal catalytic mesh is set up. Through the catalytic effect of the alloy coating, the residual gas that is not completely adsorbed is oxidized and decomposed into harmless substances, with higher degradation efficiency and complete elimination of the environmental hazards of organic pollutants. At the same time, the modified activated carbon is filled inside to utilize the strong adsorption properties of the modified activated carbon to capture special gases and malodorous substances in the waste gas with high adsorption efficiency, ensuring good filtration effect. Attached Figure Description

[0026] Figure 1 This is an isometric view of a chemical waste gas filtration and treatment device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the external structure of the first reaction chamber of a chemical waste gas filtration and treatment device proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of a spiral gas conveying pipe structure for a chemical waste gas filtration and treatment device proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the alkaline spraying mechanism for a chemical waste gas filtration and treatment device proposed in this utility model.

[0030] Figure 5 This is a schematic diagram of the external structure of the second reaction chamber of a chemical waste gas filtration and treatment device proposed in this utility model;

[0031] Figure 6 An exploded view of the second reaction chamber of a chemical waste gas filtration and treatment device proposed in this utility model;

[0032] Figure 7 This is a schematic diagram of the ultraviolet sterilization mechanism for a chemical waste gas filtration and treatment device proposed in this utility model.

[0033] Figure 8 This is a schematic diagram of a negative pressure exhaust fan mechanism for a chemical waste gas filtration and treatment device proposed in this utility model.

[0034] Figure 9 This is an exploded view of a negative pressure exhaust fan mechanism for a chemical waste gas filtration and treatment device proposed in this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Base; 2. Support plate; 3. Air inlet pipe; 4. First reaction chamber; 5. First fixing ring; 6. Second fixing ring; 7. Alkali spraying mechanism; 8. Motor; 9. Second reaction chamber; 10. Third fixing ring; 11. Blower pipe; 12. Nut; 13. Spiral gas conveying pipe; 14. Corrosion-resistant treatment chamber; 15. Precious metal catalytic mesh; 16. Isolation plate; 17. Ultraviolet sterilization mechanism; 18. Fourth fixing ring; 19. Load-bearing plate; 20. Protective pipe; 21. Negative pressure fan; 701. Infusion pipe; 702. Infusion sprayer; 703. Limiting plate; 704. Valve; 171. Fixing plate; 172. L-shaped plate; 173. Collar; 174. Ultraviolet lamp tube; 175. Screw; 176. Filament fixing block. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Reference Figures 1-5 This utility model provides a specific implementation method:

[0039] A chemical waste gas filtration and treatment device includes a base 1, with multiple support plates 2 evenly arranged on the upper part of the base 1. A first reaction chamber 4 is arranged on the upper end of the front support plate 2, and a second reaction chamber 9 is arranged on the upper end of the rear support plate 2. An air inlet pipe 3 is arranged in the middle of the front end of the first reaction chamber 4, an alkaline spraying mechanism 7 is arranged at the top of the rear end of the first reaction chamber 4, a first fixing ring 5 is arranged in the middle of the first reaction chamber 4, a second fixing ring 6 is arranged at the connection between the first reaction chamber 4 and the second reaction chamber 9, and a third fixing ring 10 is arranged in the middle of the second reaction chamber 9. The rear of the inner wall of the second reaction chamber 9 is equipped with an ultraviolet sterilization mechanism 17. The rear end of the second reaction chamber 9 is connected to a blower pipe 11. A fourth fixing ring 18 is provided on the outside of the blower pipe 11. The rear end of the air inlet pipe 3 is equipped with a spiral air conveying pipe 13. The rear end of the spiral air conveying pipe 13 is equipped with an anti-corrosion treatment chamber 14. The upper end of the anti-corrosion treatment chamber 14 is equipped with an alkaline spraying mechanism 7. The alkaline spraying mechanism 7 includes an infusion pipe 701. The upper end of the infusion pipe 701 is symmetrically equipped with limit plates 703. A valve 704 is provided between the limit plates 703. The upper end of the bottom of the infusion pipe 701 is equipped with a sprayer 702.

[0040] Reference Figures 6-9The ultraviolet sterilization mechanism 17 includes a fixed plate 171. A pair of L-shaped plates 172 are symmetrically arranged on the side wall of the fixed plate 171. Screws 175 are used to fix the L-shaped plates 172 to their side walls. A collar 173 is provided at one end of each L-shaped plate 172. An ultraviolet lamp 174 is arranged between the collars 173. Filament fixing blocks 176 are provided at both ends of the ultraviolet lamp 174 where it connects to the L-shaped plates 172. A protective tube 20 is connected to the rear end of the blower pipe 11. A load-bearing plate 19 is provided outside the protective tube 20. The rear end of the protective tube 20 is connected to a motor 8. A negative pressure is provided at the front end of the motor 8. The blower 21, the front end of the second reaction chamber 9 is equipped with a precious metal catalytic mesh 15, the middle of the second reaction chamber 9 is equipped with an isolation plate 16, and multiple nuts 12 are evenly arranged on the side wall of the first fixing ring 5. Ultraviolet irradiation is used to sterilize the pre-treated chemical waste gas, breaking the chemical bonds of residual small-molecule organic pollutants in the waste gas, decomposing them into simple inorganic substances, and simultaneously inactivating some microorganisms in the waste gas, preventing subsequent filter media from breeding bacteria and affecting the purification effect. A blower duct 11 is installed to enhance the airflow of the negative pressure induced draft fan and prevent chemical waste gas from remaining in the device, thus preventing the waste gas from stagnating and causing damage. To prevent corrosion and stabilize the output airflow of the negative pressure induced draft fan, preventing excessive wind from causing the device to shake and resulting in economic losses, a spiral air conveying pipe 13 is installed to guide the chemical waste gas into the device in a spiral shape. Centrifugal force is used to initially separate large dust particles, creating a stable airflow in the subsequent separator, improving separation efficiency, and preventing dust from directly impacting the subsequent filter components. The chemical waste gas is then passed into the anti-corrosion treatment chamber 14, facilitating the acid-base neutralization reaction of the alkaline spray mechanism 7. By spraying a certain concentration of alkaline solution, the acidic gases in the waste gas are neutralized, generating harmless salt substances. The built-in porous sieve plate increases the contact area between the alkaline solution and the waste gas, making the neutralization reaction more complete. At the same time, it intercepts some of the fine dust that is not separated by the cyclone, further purifying the waste gas. Through the catalytic effect of the alloy coating, the residual gas that is not completely adsorbed is oxidized and decomposed into harmless substances, with higher degradation efficiency, completely eliminating the environmental hazards of organic pollutants. Utilizing the strong adsorption properties of modified activated carbon, it captures special gases and malodorous substances in the waste gas with high adsorption efficiency, ensuring good filtration effect. It also enhances the oxidation resistance and corrosion resistance of the anti-corrosion treatment chamber 14, and improves the service life of the device.

[0041] Working principle: When using this chemical waste gas filtration and treatment device, firstly, start the motor 8 to make the negative pressure fan 21 start rotating, generating a negative pressure airflow. Then, input the chemical waste gas to be filtered and treated through the air inlet pipe 3. Simultaneously, open the valve 704 of the alkaline spraying mechanism 7 to start spraying the gas inside the anti-corrosion treatment chamber 14. The gas enters the anti-corrosion treatment chamber 14 through the spiral gas conveying pipe 13. After being sprayed, the acidic gas in the gas undergoes a neutralization reaction with the alkaline solution and is degraded. Then, the chemical waste gas enters the second reaction chamber 9. When passing through the precious metal catalytic mesh 15, the residual organic pollutants are degraded. After that, the gas passes through the modified activated carbon to capture and degrade the odorous substances in the waste gas. Finally, it is sterilized by the strong ultraviolet radiation of the ultraviolet sterilization mechanism 17, which breaks the chemical bonds of the residual small molecule organic pollutants in the waste gas, degrades them, and kills the bacteria and microorganisms in the waste gas. After completing all the filtration treatments, the chemical waste gas treatment is completed.

[0042] The following points should be noted in this article:

[0043] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0044] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0045] 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 specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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. A device for filtering and treating chemical waste gas, comprising a base (1), characterized in that: The upper part of the base (1) is uniformly provided with multiple support plates (2). The upper end of the front support plate (2) is provided with a first reaction chamber (4), and the upper end of the rear support plate (2) is provided with a second reaction chamber (9). The middle of the front end of the first reaction chamber (4) is provided with an air inlet pipe (3). The top of the rear end of the first reaction chamber (4) is provided with an alkaline spraying mechanism (7). The middle of the first reaction chamber (4) is provided with a first fixing ring (5). The connection between the first reaction chamber (4) and the second reaction chamber (9) is provided with a second fixing ring (6). The middle of the second reaction chamber (9) is provided with a third fixing ring (10). The rear of the inner wall of the second reaction chamber (9) is provided with an ultraviolet sterilization mechanism (17). The ultraviolet sterilization mechanism (17) includes a fixing plate (171), on which a pair of L-shaped plates (172) are symmetrically arranged. The side walls of the L-shaped plates (172) are fixed with screws (175). One end of the L-shaped plate (172) is provided with a collar (173). An ultraviolet lamp tube (174) is arranged between the collars (173). Filament fixing blocks (176) are provided at the connection points between the two ends of the ultraviolet lamp tube (174) and the L-shaped plate (172).

2. The chemical waste gas filtration and treatment device according to claim 1, characterized in that: The second reaction chamber (9) is connected to a blower pipe (11) at its rear end, and a fourth fixing ring (18) is provided on the outside of the blower pipe (11).

3. The chemical waste gas filtration and treatment device according to claim 2, characterized in that: The blower pipe (11) is connected to a protective pipe (20) at its rear end. A load-bearing plate (19) is provided on the outside of the protective pipe (20). The rear end of the protective pipe (20) is connected to a motor (8). A negative pressure fan (21) is provided at the front end of the motor (8).

4. The chemical waste gas filtration and treatment device according to claim 1, characterized in that: The rear end of the air inlet pipe (3) is provided with a spiral air conveying pipe (13), the rear end of the spiral air conveying pipe (13) is provided with an anti-corrosion treatment chamber (14), and the upper end of the anti-corrosion treatment chamber (14) is provided with an alkaline spraying mechanism (7).

5. The chemical waste gas filtration and treatment device according to claim 1, characterized in that: The alkaline spraying mechanism (7) includes an infusion pipe (701), with limit plates (703) symmetrically arranged at the upper end of the infusion pipe (701), and valves (704) arranged between the limit plates (703). A sprayer (702) is arranged at the upper bottom of the infusion pipe (701).

6. The chemical waste gas filtration and treatment device according to claim 1, characterized in that: The front end of the second reaction chamber (9) is provided with a precious metal catalyst mesh (15), the middle part of the second reaction chamber (9) is provided with an isolation plate (16), and multiple nuts (12) are evenly provided on the side wall of the first fixing ring (5).

7. The chemical waste gas filtration and treatment device according to claim 6, characterized in that: Modified activated carbon is filled between the precious metal catalytic mesh (15) and the separator plate (16).

8. The chemical waste gas filtration and treatment device according to claim 4, characterized in that: The inner sidewall of the corrosion-resistant treatment chamber (14) is coated with a fluorocarbon resin coating.

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