VOC emission treatment device for paint production

Abstract

The utility model relates to the technical field of VOC emission treatment in paint production, in particular to a VOC emission treatment device in paint production. According to the technical scheme, the VOC emission treatment device for paint production comprises a VOC treatment assembly and further comprises a heat exchange assembly and a waste gas inlet and outlet port; a heat exchange assembly is arranged at the upper end of the VOC treatment assembly; waste gas inlet and outlet ports are formed in the two sides of the VOC treatment assembly; the VOC treatment assembly comprises a treatment box, a catalytic purification plate and a catalytic purification filter element. After heated air is injected through the hot air injection port, high-temperature gas enters the heat extraction backflow bin along the heat exchange pipe and then is exhausted for cyclic heating, then VOC waste gas generated during paint production is introduced into the treatment box through the waste gas inlet and outlet port, and the waste gas is heated through the heat exchange pipe; and the catalytic purification filter element is heated, so that the waste gas purification efficiency is effectively improved, and the water content of the filter element is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of VOC emission treatment in paint production, and specifically relates to a VOC emission treatment device in paint production. Background Art

[0002] The emission of volatile organic compounds (VOC) in paint production is one of the important sources of environmental pollution. In order to reduce the impact of this pollutant on the environment, the technical background of paint production VOC emission treatment devices has become crucial. Traditional VOC emission treatment devices usually use methods such as adsorption and catalytic oxidation to purify VOC pollutants in exhaust gas. However, existing paint production VOC emission treatment devices have some problems when treating VOC air pollutants with high water content and low temperature. One of the main problems is that the filter element has a low filtration efficiency for this type of VOC pollutant and cannot be completely removed. In addition, the catalytic activity of the catalytic substance will decrease at low temperatures, resulting in a decrease in the exhaust gas purification efficiency. These problems affect the purification effect and performance of the paint production VOC emission treatment device. Utility Model Content

[0003] In order to overcome the problem that the existing VOC emission treatment device for paint production has low filtering efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases at low temperature, resulting in reduced exhaust gas purification efficiency.

[0004] The technical solution of the utility model is: a paint production VOC emission treatment device, including a VOC treatment component, a heat exchange component, and a waste gas inlet and outlet port; the upper end of the VOC treatment component is provided with a heat exchange component; both sides of the VOC treatment component are provided with waste gas inlet and outlet ports; the VOC treatment component includes a treatment box, a catalytic purification plate, and a catalytic purification filter element.

[0005] Preferably, after the heated air is injected through the hot air injection port, the high-temperature gas enters the heat exhaust reflux bin along the heat exchange tube and is then discharged for circulating heating. After that, the VOC waste gas generated during paint production is connected to the treatment box from the waste gas inlet and outlet ports. The heat exchange tube heats the waste gas, and the water content of the heated waste gas decreases and heats the catalytic purification filter element, thereby effectively improving the efficiency of waste gas purification and reducing the water content of the filter element. This solves the problem of existing paint production VOC emission treatment devices, because the filter element has low filtration efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases due to low temperature, resulting in a decrease in waste gas purification efficiency.

[0006] Preferably, a catalytic purification plate is disposed inside the treatment box, and the catalytic purification plate is clamped and connected to the inner wall plate groove of the treatment box.

[0007] Preferably, a catalytic purification filter element is arranged inside the catalytic purification plate, and the catalytic purification filter element is superimposed and connected with the multi-layer composite purification plate of the catalytic purification plate. The multi-layer composite catalytic purification filter element contains an attachment layer of catalyst powder for decomposing VOC in the exhaust gas, so that the exhaust gas can fully contact with the catalyst when passing through the catalytic purification filter element, thereby improving the exhaust gas purification efficiency.

[0008] Preferably, the heat exchange component includes an air intake heating chamber, a hot gas injection port, a heat exchange pipe, a heat exhaust reflux chamber, and a hot gas exhaust port; an air intake heating chamber is arranged at the upper end of the processing box, and the air intake heating chamber and the processing box are integrally formed.

[0009] Preferably, ventilation holes are evenly distributed on the inner lower end surface of the air inlet heating chamber; a heat exchange tube is arranged below the ventilation holes, and the heat exchange tube is connected to the ventilation holes, and the heat exchange tube is arranged inside the processing box.

[0010] Preferably, a heat exhaust reflux bin is provided below the heat exchange tube, and the heat exhaust reflux bin is integrally formed with the processing box, and the heat exhaust reflux bin is connected to the interior of the heat exchange tube.

[0011] Preferably, a hot gas injection port is provided on one side of the air intake heating bin; a hot gas exhaust port is provided on the lower end face of the heat exhaust reflux bin, and the heated air is injected through the hot gas injection port, and the high-temperature gas enters the heat exhaust reflux bin along the heat exchange pipe and is then discharged for circulating heating. Afterwards, the VOC waste gas generated during paint production is connected to the treatment box from the waste gas inlet and outlet ports, and the heat exchange pipe heats the waste gas. The water content of the heated waste gas decreases and heats the catalytic purification filter element, thereby effectively improving the efficiency of waste gas purification and reducing the water content of the filter element.

[0012] Beneficial effects of the utility model:

[0013] 1. The existing paint production VOC emission treatment device has a low filtering efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases due to low temperature, resulting in a decrease in the exhaust gas purification efficiency. After the heated air is injected through the hot air injection port, the high-temperature gas enters the heat exhaust reflux bin along the heat exchange pipe and is discharged for circulating heating. After that, the VOC waste gas generated during paint production is connected to the treatment box from the waste gas inlet and outlet ports. The heat exchange pipe heats the waste gas, and the water content of the heated waste gas decreases and heats the catalytic purification filter element, thereby effectively improving the efficiency of waste gas purification and reducing the water content of the filter element. This solves the problem that the existing paint production VOC emission treatment device has a low filtering efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases due to low temperature, resulting in a decrease in the exhaust gas purification efficiency.

[0014] 2. Through the setting of the catalytic purification filter element, the catalyst powder attachment layer for decomposing VOC in the exhaust gas contained in the multi-layer composite catalytic purification filter element enables the exhaust gas to fully contact with the catalyst when passing through the catalytic purification filter element, thereby improving the exhaust gas purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is a schematic diagram of the overall three-dimensional structure of a paint production VOC emission treatment device of the utility model;

[0016] Figure 2 What is shown is a schematic diagram of the overall side view of a VOC emission treatment device for paint production according to the utility model;

[0017] Figure 3 What is shown is a schematic diagram of the overall cross-sectional three-dimensional structure of a paint production VOC emission treatment device of the utility model;

[0018] Figure 4 Shown is a schematic diagram of the three-dimensional structure of a catalytic purification plate and a catalytic purification filter element combination of a paint production VOC emission treatment device of the utility model.

[0019] The markings in the attached figure are: 1. VOC treatment component; 2. heat exchange component; 3. exhaust gas inlet and outlet ports; 101. treatment box; 102. catalytic purification plate; 103. catalytic purification filter element; 201. air intake heating chamber; 202. hot gas injection port; 203. heat exchange pipe; 204. heat exhaust reflux chamber; 205. hot gas exhaust port. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1-4 The utility model provides an embodiment: a paint production VOC emission treatment device, including a VOC treatment component 1, a heat exchange component 2, and an exhaust gas inlet and outlet port 3; the heat exchange component 2 is arranged on the upper end of the VOC treatment component 1; the exhaust gas inlet and outlet ports 3 are arranged on both sides of the VOC treatment component 1; the VOC treatment component 1 includes a treatment box 101, a catalytic purification plate 102, and a catalytic purification filter element 103.

[0022] See also Figure 2 In this embodiment, a catalytic purification plate 102 is disposed inside the processing box 101 , and the catalytic purification plate 102 is clamped and connected to the inner wall plate groove of the processing box 101 .

[0023] See also Figure 3In this embodiment, a catalytic purification filter element 103 is disposed inside the catalytic purification plate 102, and the catalytic purification filter element 103 and the catalytic purification plate 102 are stacked and connected to form a multi-layer composite purification plate.

[0024] See also Figure 4 In this embodiment, the heat exchange component 2 includes an air intake heating chamber 201, a hot air injection port 202, a heat exchange pipe 203, a heat exhaust reflux chamber 204, and a hot air exhaust port 205; the upper end of the processing box 101 is provided with an air intake heating chamber 201, and the air intake heating chamber 201 and the processing box 101 are integrally formed, and the lower end surface of the inner part of the air intake heating chamber 201 is evenly distributed with ventilation holes; the heat exchange pipe 203 is provided below the ventilation hole, and the heat exchange pipe 203 is connected to the ventilation hole, and the heat exchange pipe 203 is arranged inside the processing box 101, a heat exhaust reflux bin 204 is arranged below the heat exchange pipe 203, and the heat exhaust reflux bin 204 is integrally formed with the processing box 101, and the heat exhaust reflux bin 204 is connected to the inside of the heat exchange pipe 203, a hot air injection port 202 is arranged on one side of the air intake heating bin 201; a hot air exhaust port 205 is arranged on the lower end face of the heat exhaust reflux bin 204.

[0025] During operation, the heated air is injected through the hot air injection port 202, and the high-temperature gas enters the heat exhaust reflux bin 204 along the heat exchange pipe 203 and is then discharged for circulating heating. After that, the VOC waste gas generated during the paint production is connected to the treatment box 101 from the waste gas inlet and outlet port 3. The heat exchange pipe 203 heats the waste gas, and the water content of the heated waste gas decreases and heats the catalytic purification filter element 103, thereby effectively improving the waste gas purification efficiency and reducing the water content of the filter element. This solves the problem that the existing paint production VOC emission treatment device has low filtering efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases due to low temperature, resulting in reduced waste gas purification efficiency.

[0026] Next, the catalyst powder adhesion layer for decomposing VOC in the exhaust gas in the multi-layer composite catalytic purification filter element 103 enables the exhaust gas to fully contact with the catalyst when passing through the catalytic purification filter element 103, thereby improving the exhaust gas purification efficiency.

[0027] Through the above steps, after the heated air is injected through the hot air injection port 202, the high-temperature gas enters the heat exhaust reflux bin 204 along the heat exchange tube 203 and is discharged for circulating heating. After that, the VOC waste gas generated during the paint production is connected to the treatment box 101 from the waste gas inlet and outlet port 3. The heat exchange tube 203 heats the waste gas, and the water content of the heated waste gas decreases and heats the catalytic purification filter element 103, thereby effectively improving the efficiency of waste gas purification and reducing the water content of the filter element, thereby avoiding the problem of the existing paint production VOC emission treatment device, because its filter element has low filtration efficiency for VOC air pollutants with high water content and low temperature, and the catalytic activity of the catalytic substance decreases due to low temperature, resulting in a decrease in waste gas purification efficiency.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A paint production VOC emission treatment device, comprising a VOC treatment component (1), characterized in that: It also includes a heat exchange component (2) and an exhaust gas inlet and outlet port (3); the heat exchange component (2) is arranged at the upper end of the VOC treatment component (1); exhaust gas inlet and outlet ports (3) are arranged on both sides of the VOC treatment component (1); the VOC treatment component (1) includes a treatment box (101), a catalytic purification plate (102), and a catalytic purification filter element (103).

2. A paint production VOC emission treatment device according to claim 1, characterized in that: A catalytic purification plate (102) is arranged inside the processing box (101), and the catalytic purification plate (102) is clamped and connected to the inner wall plate groove of the processing box (101).

3. A paint production VOC emission treatment device according to claim 1, characterized in that: A catalytic purification filter element (103) is arranged inside the catalytic purification plate (102), and the catalytic purification filter element (103) and the catalytic purification plate (102) are arranged in a stacked and connected manner as a multi-layer composite purification plate.

4. A paint production VOC emission treatment device according to claim 1, characterized in that: The heat exchange component (2) comprises an air intake heating chamber (201), a hot air injection port (202), a heat exchange pipe (203), a heat exhaust reflux chamber (204), and a hot air exhaust port (205); the air intake heating chamber (201) is arranged at the upper end of the processing box (101), and the air intake heating chamber (201) and the processing box (101) are integrally formed.

5. A paint production VOC emission treatment device according to claim 4, characterized in that: The lower end surface of the air inlet heating chamber (201) is evenly distributed with ventilation holes; a heat exchange pipe (203) is arranged below the ventilation holes, and the heat exchange pipe (203) is connected to the ventilation holes, and the heat exchange pipe (203) is arranged inside the processing box (101).

6. A paint production VOC emission treatment device according to claim 5, characterized in that: A heat exhaust reflux bin (204) is provided below the heat exchange tube (203), and the heat exhaust reflux bin (204) and the processing box (101) are integrally formed, and the heat exhaust reflux bin (204) is connected to the interior of the heat exchange tube (203).

7. A paint production VOC emission treatment device according to claim 4, characterized in that: A hot air injection port (202) is provided on one side of the air intake heating chamber (201); and a hot air exhaust port (205) is provided on the lower end surface of the heat exhaust reflow chamber (204).

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