VOCs waste gas impurity removal device

Abstract

The utility model discloses a VOCs waste gas impurity removal device which comprises an outer box body, an inner box body is arranged in the outer box body, and a gas inlet and a gas outlet are respectively formed in the upper parts of two opposite side walls of the inner box body; at least one partition plate is vertically arranged in the middle of the inner box body, the partition plates are used for dividing an inner cavity of the inner box body into different impurity removal cavities, the impurity removal cavities located on the two sides of the inner box body correspond to the air inlet and the air outlet respectively, and waste gas conduction assemblies are arranged in the impurity removal cavities; a spraying assembly is arranged on the upper portion of the impurity removal cavity, a waste liquid outlet is formed in the lower portion of the impurity removal cavity, a control box used for supplying liquid to the spraying assembly is arranged between the inner box body and the outer box body, and a liquid inlet extending to the outer side of the outer box body is formed in the upper portion of the control box; the partition plates are arranged in the middle of the inner box body to divide the inner cavity into different impurity removal cavities, so that the contact area between waste gas and a treatment medium is actually increased, and the removal efficiency of impurity particles in VOCs is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to industrial waste gas treatment technical field, especially related to a VOCs waste gas impurity removal device. BACKGROUND

[0002] VOCs is various organic compounds at normal temperature, boiling point 50 DEG C to 260 DEG C. In our country, VOCs refers to the organic compounds at normal temperature, saturated vapor pressure is greater than 70Pa, normal pressure boiling point is below 260 DEG C, or under the condition of 20 DEG C, vapor pressure is greater than or equal to 10Pa and all volatile organic compounds, VOCs waste gas is mainly produced in the waste gas emission of petroleum and chemical industry and related industries, such as factory waste gas, light industry waste gas, printing and dyeing waste gas, pharmaceutical waste gas, steel plant waste gas, machinery manufacturing waste gas, electronic factory waste gas, electroplating plant waste gas, paint waste gas etc., generally there are flammable and explosive, toxic and harmful, difficult to handle etc.

[0003] The existing VOCs waste gas treatment method mainly has catalytic combustion, solvent adsorption etc., but these VOCs treatment technologies have strict requirements on the particulate matter content in waste gas. Some smaller particulate matter can adsorb VOCs, after entering the treatment equipment, if these particulate matters with VOCs cannot be effectively removed, the removal rate of VOCs will be affected. Therefore, by removing particulate matter through pretreatment, the effect of subsequent VOCs treatment process can be improved. The particles carried in VOCs waste gas can easily block the internal channel of the equipment, affecting the service life of the equipment. By removing particulate matter through pretreatment, the service life of these equipment can be prolonged, and the stable operation of the treatment system can be ensured.

[0004] Therefore, the present application provides a VOCs waste gas impurity removal device, which aims at effectively removing impurity particles in VOCs waste gas and avoiding the influence on subsequent VOCs waste gas treatment. Utility model content

[0005] The utility model provides a VOCs waste gas impurity removal device, which aims at solving the problems in the above background technology.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A VOCs waste gas impurity removal device, comprising: an outer box body, an inner box body is arranged in the inner part of the outer box body, an air inlet and an air outlet are arranged on the upper part of the two opposite side walls of the inner box body respectively, and the air inlet and the air outlet all extend to the outside of the outer box body;

[0008] The middle part of the inner box body is provided with at least a partition plate vertically, which is used for separating the inner cavity of the inner box body into different impurity removal cavities, the impurity removal cavities on both sides of the inner box body correspond to the air inlet and the air outlet respectively, and the impurity removal cavities are all provided with waste gas conducting assemblies which are matched with the air inlet and the partition plate respectively and used for transmitting waste gas from the air inlet to the air outlet.

[0009] The upper part of the impurity removal cavity is provided with a spraying assembly, the lower part is provided with a waste liquid outlet, and the control box for supplying liquid to the spraying assembly is arranged between the inner box body and the outer box body.

[0010] Further, the waste gas conducting assembly comprises an extension pipe and a filter head, the upper end of the extension pipe is matched with the upper part of the air inlet or the partition plate, the lower end of the extension pipe is located at the lower part of the impurity removal cavity and is provided with the filter head.

[0011] Further, the filter head comprises a first connecting pipe which is threadedly connected with the lower end of the extension pipe, a first fixed net is arranged in the middle part of the first connecting pipe, the lower part of the first connecting pipe is filled with filter filling material, a second connecting pipe is threadedly connected with the lower end of the first connecting pipe, a second fixed net is arranged in the middle part of the second connecting pipe, a liquid storage cavity is arranged in the lower part of the second connecting pipe, and a plurality of air outlet holes are arranged in the lower end of the second connecting pipe.

[0012] Further, the lower part of the impurity removal cavity is provided with a pair of liquid level sensors, the two liquid level sensors are arranged in an upper-lower interval, the upper liquid level sensor corresponds to the upper part of the liquid storage cavity, and the lower liquid level sensor corresponds to the lower part of the liquid storage cavity.

[0013] Further, the inner box body comprises a main box body and an upper cover, the upper cover is arranged at the upper part of the main box body and is fixedly connected with the main box body through a bolt assembly, and a sealing ring is arranged between the upper cover and the main box body.

[0014] Further, the upper part of the upper cover is provided with a plurality of connecting heads which are matched with the control box and correspond to the impurity removal cavities, and the lower part of the upper cover is provided with a plurality of spraying assemblies which correspond to the connecting heads.

[0015] Further, the spraying assembly comprises a spraying pipe and a plurality of atomizing nozzles, the spraying pipe is fixedly connected with the lower surface of the upper cover and is communicated with the control box through the connecting head, and the lower part of the spraying pipe is provided with a plurality of atomizing nozzles.

[0016] Further, the waste liquid outlet is provided with a control valve.

[0017] Further, the lower part of the outer box body is provided with support feet at four corners respectively.

[0018] Compared with the prior art, the VOCs waste gas impurity removal device has the following technical effects:

[0019] 1. The VOCs waste gas impurity removal device disclosed by the utility model increases the contact area of waste gas and treatment medium by setting a partition plate in the middle of the inner box, thereby improving the removal efficiency of internal impurity particles of VOCs; the flow size of the spraying assembly is controlled by the control box, thereby controlling the liquid level in the impurity removal cavity; the lower part of each impurity removal cavity is provided with a waste liquid outlet, which can avoid the accumulation of waste liquid in the system, timely discharge the waste liquid that has absorbed impurity particles, reduce the risk of secondary pollution, and provide convenience for the recycling or replacement of subsequent treatment liquid.

[0020] 2. The VOCs waste gas impurity removal device disclosed by the utility model can easily change the spatial layout of the inner box by adjusting the number of partition plates, and adapt to the treatment needs of different VOCs concentrations or specific pollutant types. This design not only has high flexibility, but also can be modularly expanded according to actual application conditions to meet the needs of larger treatment capacity. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is an internal schematic view of the VOCs waste gas impurity removal device disclosed by the utility model;

[0022] Figure 2 is a filter head schematic view of the VOCs waste gas impurity removal device disclosed by the utility model;

[0023] Figure 3 is an upper cover cooperation schematic view of the VOCs waste gas impurity removal device disclosed by the utility model.

[0024] In the drawings:

[0025] 1. outer box;

[0026] 2. inner box; 201. main box; 202. upper cover; 203. sealing ring; 204. connecting head;

[0027] 3. gas inlet; 4. gas outlet; 5. partition plate; 6. extension pipe;

[0028] 7. filter head; 701. first connecting pipe; 702. first fixed net; 703. filter filler; 704. second connecting pipe; 705. second fixed net; 706. gas outlet hole;

[0029] 8. liquid level sensor; 9. waste liquid outlet;

[0030] 10. spraying assembly; 1001. spraying pipe; 1002. atomizing nozzle;

[0031] 11. Control box; 12. Liquid inlet; 13. Support feet. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0033] like Figure 1 As shown, a VOCs exhaust gas removal device includes: an outer casing 1, an inner casing 2 is provided inside the outer casing 1, and an air inlet 3 and an exhaust outlet 4 are respectively provided on the upper part of the two opposite side walls of the inner casing 2, and the air inlet 3 and the exhaust outlet 4 both extend to the outside of the outer casing 1.

[0034] At least one partition plate 5 is vertically arranged in the middle of the inner box 2. The partition plate 5 is used to divide the inner cavity of the inner box 2 into different impurity removal chambers. The impurity removal chambers located on both sides of the inner box 2 correspond to the air inlet 3 and the exhaust outlet 4, respectively. Each impurity removal chamber is provided with an exhaust gas conduction component. The exhaust gas conduction component cooperates with the air inlet 3 and the partition plate 5, respectively, to transfer exhaust gas from the air inlet 3 to the exhaust outlet 4.

[0035] The upper part of the impurity removal chamber is provided with a spray assembly 10, and the lower part is provided with a waste liquid outlet 9. A control box 11 for supplying liquid to the spray assembly 10 is provided between the inner box 2 and the outer box 1. The upper part of the control box 11 is provided with a liquid inlet 12 extending to the outside of the outer box 1.

[0036] By setting a partition plate 5 in the middle of the inner chamber 2, the inner cavity is divided into different impurity removal chambers, which increases the contact area between the exhaust gas and the treatment medium, thereby improving the removal efficiency of impurity particles inside VOCs. The setting of the control box 11 makes it easy to control the flow rate of the spray assembly 10, thereby controlling the liquid level inside the impurity removal chamber. Each impurity removal chamber is provided with a waste liquid outlet 9 at the bottom, which can avoid the accumulation of waste liquid inside the system, discharge the waste liquid that has absorbed impurity particles in a timely manner, reduce the risk of secondary pollution, and at the same time provide convenience for the recycling or replacement of subsequent treatment liquid.

[0037] like Figure 1 As shown, the exhaust gas conduction assembly includes an extension pipe 6 and a filter head 7. The upper end of the extension pipe 6 is engaged with the upper part of the air inlet 3 or the partition plate 5, and the lower end of the extension pipe 6 is located in the lower part of the impurity removal chamber and is provided with a filter head 7.

[0038] The extension pipe 6 guides the exhaust gas from the upper part of the air inlet 3 or the partition plate 5 to the lower part of the impurity removal cavity, increases the travel of the gas flow in the impurity removal cavity, prolongs the contact time of the exhaust gas with the treatment liquid, and also increases the contact area, which helps to more fully remove the impurity particles in the VOCs exhaust gas;

[0039] The filter head 7 can preliminarily filter out larger particles or impurities in the exhaust gas, reduce the influence of these impurities on the subsequent treatment process, protect the cleanliness of the spray assembly and the treatment liquid, and concentrate the large-particle impurities inside the filter head 7, facilitating the subsequent regular cleaning of the filter head and ensuring the long-term stable operation of the system.

[0040] As shown in Figure 2 , the filter head 7 comprises a first connecting pipe 701 threadedly connected to the lower end of the extension pipe 6, a first fixed net 702 arranged in the middle part of the first connecting pipe 701, and a filter filler 703 filled in the lower part of the first connecting pipe 701. The lower end of the first connecting pipe 701 is threadedly connected with a second connecting pipe 704, the middle part of the second connecting pipe 704 is provided with a second fixed net 705, the lower part of the second connecting pipe 704 is provided with a liquid storage cavity, and the lower end of the second connecting pipe 704 is provided with a plurality of gas outlet holes 706. The detachable structure of the filter head 7 facilitates the replacement of the internal filter filler 703 such as filter sponge, and the arrangement of the liquid storage cavity facilitates the entry of part of the treatment liquid into the interior of the filter head 7, so that the exhaust gas is in full contact with the treatment liquid, and the removal efficiency of the impurity particles in the VOCs exhaust gas is improved.

[0041] As shown in Figure 1 , a pair of liquid level sensors 8 are arranged in the lower part of the impurity removal cavity, and the two liquid level sensors 8 are arranged in an upper and lower interval. The upper liquid level sensor 8 corresponds to the upper part of the liquid storage cavity, and the lower liquid level sensor 8 corresponds to the lower part of the liquid storage cavity. Through the cooperation of the liquid level sensor 8 and the control box 11, the height of the treatment liquid at the bottom of the impurity removal cavity can be more accurately controlled, so that the height of the treatment liquid is adapted to the height of the liquid storage cavity of the filter head 7.

[0042] As shown in Figure 3 , the inner box 2 comprises a main box 201 and an upper cover 202. The upper cover 202 is arranged on the upper part of the main box 201 and is fixedly connected with the main box 201 through a bolt assembly. A sealing ring 203 is arranged between the upper cover 202 and the main box 201. The detachable arrangement of the upper cover 202 facilitates the maintenance, inspection and replacement of the internal components of the inner box 2.

[0043] As shown in Figure 1 and Figure 3As shown, the upper part of the upper cover 202 is provided with a plurality of connecting heads 204, which are matched with the control box 11 and correspondingly arranged with the impurity removal cavity, and the lower part of the upper cover 202 is provided with a plurality of spraying assemblies 10, which are correspondingly arranged with the connecting heads 204.

[0044] As shown in the drawings, Figure 3 The spraying assembly 10 comprises a spraying pipe 1001 and a plurality of atomizing nozzles 1002, the spraying pipe 1001 is fixedly connected with the lower surface of the upper cover 202 and communicates with the control box 11 through the connecting head 204, and the lower part of the spraying pipe 1001 is provided with a plurality of atomizing nozzles 1002. Through the arrangement of a plurality of atomizing nozzles 1002, the treatment liquid can be atomized into tiny droplets and uniformly sprayed in the area through which the exhaust gas passes. Such atomized droplets can fully contact with the gas in a small particle size, increase the gas-liquid contact area, and improve the removal efficiency of impurities in VOCs.

[0045] In a specific embodiment, the waste liquid outlet 9 is provided with a control valve. The control valve is matched with the control box 11 and the liquid level sensor 8, and can more flexibly control the height of the treatment liquid in the lower part of the impurity removal cavity.

[0046] As shown in the drawings, Figure 1 The lower part of the outer box body 1 is respectively provided with supporting legs 13 at four corners.

[0047] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A VOCs exhaust gas impurity removal device, characterized by, The utility model relates to a waste gas treatment device, including: An outer box (1) is internally provided with an inner box (2), the upper part of the two opposite side walls of the inner box (2) is provided with air inlet (3) and exhaust port (4) respectively, air inlet (3) and exhaust port (4) all extend to the outside of outer box (1); The middle part of the inner box (2) is vertically provided with at least a partition plate (5), the partition plate (5) is used for separating the inner cavity of the inner box (2) into different impurity removal cavities, the impurity removal cavities located at both sides of the inner box (2) correspond to air inlet (3) and exhaust port (4) respectively, the impurity removal cavities are all provided with waste gas transmission assemblies, the waste gas transmission assemblies are matched with air inlet (3) and partition plate (5) respectively, and are used for transmitting waste gas from air inlet (3) to exhaust port (4); The upper part of the impurity removal cavity is provided with a spraying assembly (10), and the lower part is provided with a waste liquid outlet (9), a control box (11) for supplying liquid to the spraying assembly (10) is arranged between the inner box (2) and the outer box (1), and the upper part of the control box (11) is provided with a liquid inlet (12) extending to the outside of the outer box (1).

2. The VOCs exhaust gas impurity removal device according to claim 1, characterized in that, The waste gas transmission assembly comprises an extension pipe (6) and a filter head (7), the upper end of the extension pipe (6) is matched with the upper part of the air inlet (3) or the partition plate (5), and the lower end of the extension pipe (6) is located at the lower part of the impurity removal cavity and is provided with the filter head (7).

3. The VOCs exhaust gas impurity removal device according to claim 2, characterized in that, The filter head (7) comprises a first connecting pipe (701) threadedly connected with the lower end of the extension pipe (6), a first fixed net (702) is arranged in the middle part of the first connecting pipe (701), the lower part is filled with filter filler (703), the lower end of the first connecting pipe (701) is threadedly connected with a second connecting pipe (704), a second fixed net (705) is arranged in the middle part of the second connecting pipe (704), the lower part is provided with a liquid storage cavity, and the lower end is provided with a plurality of air outlet holes (706).

4. The VOCs exhaust gas impurity removal device according to claim 3, characterized in that, The lower part of the impurity removal cavity is provided with a pair of liquid level sensors (8), the two liquid level sensors (8) are arranged at intervals in the upper and lower directions, the upper liquid level sensor (8) corresponds to the upper part of the liquid storage cavity, and the lower liquid level sensor (8) corresponds to the lower part of the liquid storage cavity.

5. The VOCs exhaust gas impurity removal device according to claim 1, characterized in that, The inner box (2) comprises a main box (201) and an upper cover (202), the upper cover (202) is arranged at the upper part of the main box (201) and is fixedly connected with the main box (201) through a bolt assembly, and a sealing ring (203) is arranged between the upper cover (202) and the main box (201).

6. The VOCs exhaust gas impurity removal device according to claim 5, characterized in that, The upper part of the upper cover (202) is provided with a plurality of connecting heads (204), the connecting heads (204) are matched with the control box (11) and are correspondingly arranged with the impurity removal cavities, and the lower part of the upper cover (202) is provided with a plurality of spraying assemblies (10), and the spraying assemblies (10) are correspondingly arranged with the connecting heads (204).

7. The VOCs exhaust gas impurity removal device according to claim 6, characterized in that, The spraying assembly (10) comprises a spraying pipe (1001) and a plurality of atomizing nozzles (1002), the spraying pipe (1001) is fixedly connected with the lower surface of the upper cover (202) and is communicated with the control box (11) through the connecting head (204), and the lower part of the spraying pipe (1001) is provided with the plurality of atomizing nozzles (1002).

8. The VOCs exhaust gas impurity removal device according to claim 1, characterized in that, A control valve is arranged at the waste liquid outlet (9).

9. The VOCs exhaust gas impurity removal device according to claim 1, characterized in that, Supporting feet (13) are arranged at the lower part of the four corners of the outer box body (1).

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