CN214764414U - Mix metal spray paint waste gas and strengthen absorbing device - Google Patents
Mix metal spray paint waste gas and strengthen absorbing device Download PDFInfo
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- CN214764414U CN214764414U CN202120240427.4U CN202120240427U CN214764414U CN 214764414 U CN214764414 U CN 214764414U CN 202120240427 U CN202120240427 U CN 202120240427U CN 214764414 U CN214764414 U CN 214764414U
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Abstract
The utility model discloses a mixed metal spray paint waste gas reinforced absorption device, which comprises a primary absorption unit, a secondary absorption unit and a tertiary absorption unit which are arranged from bottom to top in sequence; the first-stage absorption unit comprises a water storage cavity, a first-stage packed bed and a first-stage ejector which are arranged from bottom to top, a waste gas inlet pipeline is communicated with the area between the water storage cavity and the first-stage packed bed, the second-stage absorption unit comprises an absorbent storage cavity, a second-stage packed bed and a second-stage ejector which are arranged from bottom to top, and the area between the absorbent storage cavity and the second-stage packed bed is communicated with the area between the first-stage packed bed and the first-stage ejector; the third-stage absorption unit comprises a demister, the lower part of the demister is communicated with a region between the second-stage packed bed and the second-stage ejector, and the upper part of the demister is communicated with a waste gas outlet pipeline; therefore, when the waste gas is treated, three-stage treatment is carried out, and the problem that the existing waste gas is difficult to absorb is practically solved.
Description
Technical Field
The utility model relates to a waste gas treatment's technical field, in particular to mix metal spraying paint waste gas and reinforce absorbing device.
Background
In order to protect metal surfaces from oxidative corrosion, metal painting techniques are widely used. By forming a uniform paint spraying coating layer on the metal surface, the paint spraying device effectively isolates the permeation of water, oxygen, electrons, stray ions and the like, and greatly slows down or avoids the corrosion of the coated metal. In the metal painting process, a large amount of painting waste gas is generated, and if the painting waste gas is not collected and treated, the painting waste gas can cause great damage to the health of workers and the atmospheric environment.
The pollutants of the painting exhaust gas mainly include paint mist and Volatile Organic Compounds (VOCs). The paint mist contains particles and is sticky, so that the paint mist is easy to attach to pipeline equipment to cause blockage. At present, the treatment methods of the paint spraying waste gas mainly comprise an absorption method, an adsorption method, a biological method, a plasma method, a UV photolysis method, an RCO/RTO combustion method and the like. The biological method has strict requirements on operation conditions, and the living activity of biological strains and the treatment effect on VOCs are not stable enough. Inefficient methods such as plasma and UV photolysis have been heavily placed on the forbidden list. The RTO/RCO combustion method has high investment and operation cost and explosion risk. Therefore, the paint spray waste gas treatment methods which are more practical are the absorption method and the adsorption method.
At present, water spraying is mainly adopted in the absorption method, but the spraying waste gas also contains a large amount of water-insoluble VOCs, so that the overall removal rate of the VOCs is low, and increasingly strict environmental protection standards are difficult to achieve. The adoption of the absorbent can improve the removal efficiency of the VOCs, but the cost of the absorbent is higher, and the absorbent is difficult to bear by small and medium-sized enterprises. Therefore, a technical solution to solve the problem is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mix metal spraying paint waste gas and strengthen absorbing device to solve the problem that current waste gas absorbs the difficulty.
In order to solve the technical problem, the utility model provides a mixed metal spray paint waste gas strengthening absorption device, which comprises a primary absorption unit, a secondary absorption unit and a tertiary absorption unit which are sequentially arranged from bottom to top; the primary absorption unit comprises a water storage cavity, a primary packed bed and a primary ejector which are arranged from bottom to top, a waste gas inlet pipeline is communicated with a region between the water storage cavity and the primary packed bed, the secondary absorption unit comprises an absorbent storage cavity, a secondary packed bed and a secondary ejector which are arranged from bottom to top, and the region between the absorbent storage cavity and the secondary packed bed is communicated with the region between the primary packed bed and the primary ejector; the third-stage absorption unit comprises a demister, the lower part of the demister is communicated with a region between the second-stage packed bed and the second-stage ejector, and the upper part of the demister is communicated with a waste gas outlet pipeline.
In one embodiment, the first-stage absorption unit further comprises a first-stage circulating pump, an input end of the first-stage circulating pump is communicated with the water storage cavity, an output end of the first-stage circulating pump is communicated with the first-stage ejector, and the first-stage circulating pump is used for pumping liquid from the water storage cavity to the first-stage ejector to spray.
In one embodiment, the primary absorption unit further comprises a primary air guide structure, the primary air guide structure is arranged on the periphery of the primary absorption unit, the primary air guide structure is communicated with the primary absorption unit and the secondary absorption unit, the primary air guide structure is provided with a primary guide inclined plane in the primary absorption unit, and the primary guide inclined plane inclines towards the vertical center direction of the primary absorption unit.
In one embodiment, the inclination angle of the primary guide slope is 5-30 °.
In one embodiment, the secondary absorption unit further comprises a secondary circulation pump, an input end of the secondary circulation pump is communicated with the absorbent storage chamber, an output end of the secondary circulation pump is communicated with the secondary ejector, and the secondary circulation pump is used for pumping liquid from the absorbent storage chamber to the secondary ejector for spraying.
In one embodiment, the secondary absorption unit further comprises a first bypass valve, a second bypass valve, an absorbent regenerator and a recovery pipeline; the first bypass valve is communicated between the output end of the secondary circulating pump and the input end of the secondary ejector; the second bypass valve is communicated between the output end of the secondary circulating pump and the input end of the absorbent regenerator, and the output end of the absorbent regenerator is communicated with the input end of the secondary ejector; the recovery pipeline is communicated with the output end of the absorbent regenerator.
In one embodiment, the tertiary absorption unit further comprises a volatile organic compound detector and a feedback circuit, the volatile organic compound detector is arranged between the demister and the exhaust gas outlet pipeline, and the volatile organic compound detector is used for sending a detection result to the feedback circuit; when the detection result exceeds a preset value, the feedback circuit controls the secondary ejector to increase the injection quantity; and when the detection result is lower than a preset value, the feedback circuit controls the secondary injector to reduce the injection quantity.
In one embodiment, the secondary absorption unit further comprises a secondary air guide structure, the secondary air guide structure is arranged on the periphery of the secondary absorption unit, the secondary air guide structure is communicated with the secondary absorption unit and the tertiary absorption unit, and a secondary guide inclined plane is arranged in the secondary absorption unit and inclines towards the vertical center direction of the secondary absorption unit.
In one embodiment, the angle of inclination of the secondary guide slope is 5 ° to 30 °.
The utility model has the advantages as follows:
the utility model comprises a primary absorption unit, a secondary absorption unit and a tertiary absorption unit which are arranged from bottom to top in sequence, so that when waste gas is treated, tertiary treatment is carried out; and the one-level absorption unit includes water storage chamber, one-level packed bed and the one-level sprayer from up arranging down, has then realized adsorbing the water spray of waste gas, and the second grade absorption unit includes from up absorbent storage chamber, second grade packed bed and the second grade sprayer of arranging down, has then realized the absorption of water-insoluble material, sets up at last the tertiary absorption unit includes the defroster, then has realized the dewatering of waste gas and has discharged, has solved the problem of current waste gas absorption difficulty conscientiously.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the exhaust gas absorption enhancement device for mixed metal paint spraying according to the present invention.
The reference numbers are as follows:
10. a primary absorption unit; 11. a water storage cavity; 12. a first-stage packed bed; 13. a primary ejector; 14. a first-stage circulating pump; 15. a primary air guide structure; 16. a primary guide slope;
20. a secondary absorption unit; 21. an absorbent storage chamber; 22. a secondary packed bed; 23. a secondary ejector; 24. a second-stage circulating pump; 25. a first bypass valve; 26. a second bypass valve; 27. an absorbent regenerator; 28. a recovery pipeline; 29. a secondary air guide structure; 290. a secondary guide slope;
30. a tertiary absorption unit; 31. a demister; 32. a volatile organic detector; 33. a feedback circuit;
41. an exhaust gas inlet conduit; 42. and an exhaust gas outlet pipeline.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The utility model discloses a mixed metal spray painting waste gas strengthening absorption device, the embodiment of which is shown in figure 1 and comprises a primary absorption unit 10, a secondary absorption unit 20 and a tertiary absorption unit 30 which are arranged from bottom to top in sequence; the primary absorption unit 10 comprises a water storage cavity 11, a primary packed bed 12 and a primary ejector 13 which are arranged from bottom to top, a waste gas inlet pipeline 41 is communicated with a region between the water storage cavity 11 and the primary packed bed 12, the secondary absorption unit 20 comprises an absorbent storage cavity 21, a secondary packed bed 22 and a secondary ejector 23 which are arranged from bottom to top, and a region between the absorbent storage cavity 21 and the secondary packed bed 22 is communicated with a region between the primary packed bed 12 and the primary ejector 13; the tertiary absorption unit 30 comprises a demister 31, the lower part of the demister 31 is communicated with the region between the secondary packed bed 22 and the secondary ejector 23, and the upper part of the demister 31 is communicated with an exhaust gas outlet pipe 42.
When the water storage device is used, the water storage cavity 11 is used for storing water, the absorbent storage cavity 21 is used for storing absorbent, then the waste gas enters the primary absorption unit 10 through the waste gas inlet pipeline 41, and under the condition that the primary ejector 13 continuously sprays water, water-soluble components in the waste gas are taken away; after the waste gas enters the secondary absorption unit 20, the secondary ejector 23 continuously sprays the absorbent, and water-insoluble components in the waste gas are also taken away; finally, the waste gas enters the third-stage absorption unit 30, and after the waste gas is dewatered by the demister 31, the waste gas meets the emission standard and is discharged through the waste gas outlet pipe 42.
As shown in fig. 1, the first-stage absorption unit 10 further includes a first-stage circulation pump 14, an input end of the first-stage circulation pump 14 is connected to the water storage chamber 11, an output end of the first-stage circulation pump 14 is connected to the first-stage ejector 13, and the first-stage circulation pump 14 is used for pumping the liquid from the water storage chamber 11 to the first-stage ejector 13 for spraying.
After the primary sprayer 13 sprays, most of the water in the water storage cavity 11 is still in an unsaturated state, and at the moment, the primary circulating pump 14 pumps the water in the water storage cavity 11 to the primary sprayer 13 for spraying, so that the utilization efficiency of the water can be enhanced, and the waste is avoided.
As shown in fig. 1, the primary absorption unit 10 further includes a primary air guide structure 15, the primary air guide structure 15 is disposed on the periphery of the primary absorption unit 10, the primary air guide structure 15 is connected to the primary absorption unit 10 and the secondary absorption unit 20, the primary air guide structure 15 is provided with a primary guide inclined plane 16 in the primary absorption unit 10, and the primary guide inclined plane 16 is inclined toward the vertical center of the primary absorption unit 10.
After the primary air guide structure 15 is additionally arranged, the waste gas in the primary absorption unit 10 is guided to the central position, and the spraying amount of the central position is large, so that the absorption efficiency of the primary absorption unit 10 is improved, and the guarantee is provided for improving the absorption efficiency of the secondary absorption unit 20.
In this embodiment, the inclination angle of the first-stage guiding inclined plane 16 is preferably set to be 5 ° to 30 ° to ensure that a better flow guiding effect can be obtained.
As shown in fig. 1, the secondary absorption unit 20 further comprises a secondary circulation pump 24, an input end of the secondary circulation pump 24 is communicated with the absorbent storage chamber 21, an output end of the secondary circulation pump 24 is communicated with the secondary ejector 23, and the secondary circulation pump 24 is used for pumping liquid from the absorbent storage chamber 21 to the secondary ejector 23 for spraying.
After the secondary ejector 23 sprays, most of the absorbent in the absorbent storage cavity 21 is still in an unsaturated state, and at the moment, the secondary circulating pump 24 pumps the absorbent in the absorbent storage cavity 21 to the secondary ejector 23 for spraying, so that the utilization efficiency of the absorbent can be enhanced, and waste is avoided.
As shown in fig. 1, the secondary absorption unit 20 further includes a first bypass valve 25, a second bypass valve 26, an absorbent regenerator 27, and a recovery pipe 28; the first bypass valve 25 is communicated between the output end of the second-stage circulating pump 24 and the input end of the second-stage ejector 23; the second bypass valve 26 is communicated between the output end of the second-stage circulating pump 24 and the input end of the absorbent regenerator 27, and the output end of the absorbent regenerator 27 is communicated with the input end of the second-stage ejector 23; the recovery line 28 is connected to the output of the absorbent regenerator 27.
When the absorbent is not saturated, the first bypass valve 25 can be controlled to be opened, the second bypass valve 26 is controlled to be closed, and the second-stage circulating pump 24 pumps the absorbent to the second-stage ejector 23 for circulating spraying so as to improve the utilization rate of the absorbent; after the absorbent is saturated, the first bypass valve 25 can be controlled to be closed, the second bypass valve 26 is controlled to be opened, the second-stage circulating pump 24 pumps the absorbent to the absorbent regenerator 27, the absorbent regenerator 27 heats the absorbent to evaporate and separate the organic volatile matters adsorbed by the absorbent, and the organic volatile matters are recycled through the recycling pipeline 28, and the heated absorbent can be sent to the second-stage ejector 23 again for spraying application.
As shown in fig. 1, the three-stage absorption unit 30 further includes a volatile organic compound detector 32 and a feedback circuit 33, the volatile organic compound detector 32 is disposed between the demister 31 and the exhaust gas outlet pipe 42, and the volatile organic compound detector 32 is configured to send a detection result to the feedback circuit 33; when the detection result exceeds the preset value, the feedback circuit 33 controls the secondary injector 23 to increase the injection quantity; when the detection result is lower than the preset value, the feedback circuit controls the secondary injector 23 to decrease the injection amount.
After the control mode is adopted, the dosage of the absorbent can be controlled according to the exhaust gas absorption condition, so that the dosage of the absorbent is more appropriate, and the production cost is reduced.
As shown in fig. 1, the secondary absorption unit 20 further includes a secondary air guide structure 29, the secondary air guide structure 29 is disposed on the periphery of the secondary absorption unit 20, the secondary air guide structure 29 connects the secondary absorption unit 20 and the tertiary absorption unit 30, the secondary air guide structure 29 is provided with a secondary guide inclined plane 290 in the secondary absorption unit 20, and the secondary guide inclined plane 290 inclines toward the vertical center direction of the secondary absorption unit 20.
After the secondary air guide structure 29 is additionally arranged, the waste gas in the secondary absorption unit 20 is guided to the central position, and the spraying amount of the central position is large, so that the absorption efficiency of the secondary absorption unit 20 is improved, and the guarantee is provided for improving the absorption efficiency of the secondary absorption unit 20.
In this embodiment, the inclination angle of the secondary guiding inclined plane 290 is preferably set to be 5 ° to 30 °, so as to ensure that a better flow guiding effect can be obtained.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (9)
1. A reinforced absorption device for mixed metal spray painting waste gas is characterized in that,
the device comprises a primary absorption unit, a secondary absorption unit and a tertiary absorption unit which are sequentially arranged from bottom to top;
the first-stage absorption unit comprises a water storage cavity, a first-stage packed bed and a first-stage ejector which are arranged from bottom to top, a waste gas inlet pipeline is communicated with the area between the water storage cavity and the first-stage packed bed,
the secondary absorption unit comprises an absorbent storage cavity, a secondary packed bed and a secondary ejector which are arranged from bottom to top, and a region between the absorbent storage cavity and the secondary packed bed is communicated with a region between the primary packed bed and the primary ejector;
the third-stage absorption unit comprises a demister, the lower part of the demister is communicated with a region between the second-stage packed bed and the second-stage ejector, and the upper part of the demister is communicated with a waste gas outlet pipeline.
2. The apparatus as claimed in claim 1, wherein the primary absorption unit further comprises a primary circulation pump, an input end of the primary circulation pump is connected to the water storage chamber, an output end of the primary circulation pump is connected to the primary sprayer, and the primary circulation pump is used for pumping liquid from the water storage chamber to the primary sprayer for spraying.
3. The exhaust gas absorption enhancement device for mixed metal paint spraying according to claim 1, wherein the primary absorption unit further comprises a primary air guide structure, the primary air guide structure is disposed on the periphery of the primary absorption unit, the primary air guide structure is connected with the primary absorption unit and the secondary absorption unit, and the primary air guide structure is provided with a primary guide inclined plane which is inclined toward the vertical center of the primary absorption unit.
4. The apparatus for enhanced absorption of exhaust gas from mixed metal spray painting according to claim 3, wherein the angle of inclination of the primary guide slope is 5 ° to 30 °.
5. The apparatus of claim 1, wherein the secondary absorption unit further comprises a secondary circulation pump, an input end of the secondary circulation pump is connected to the absorbent storage chamber, an output end of the secondary circulation pump is connected to the secondary ejector, and the secondary circulation pump is used for pumping the liquid from the absorbent storage chamber to the secondary ejector for spraying.
6. The exhaust gas absorption enhancing apparatus for mixed metal paint spraying according to claim 5,
the secondary absorption unit also comprises a first bypass valve, a second bypass valve, an absorbent regenerator and a recovery pipeline;
the first bypass valve is communicated between the output end of the secondary circulating pump and the input end of the secondary ejector;
the second bypass valve is communicated between the output end of the secondary circulating pump and the input end of the absorbent regenerator, and the output end of the absorbent regenerator is communicated with the input end of the secondary ejector;
the recovery pipeline is communicated with the output end of the absorbent regenerator.
7. The exhaust gas absorption enhancement device for mixed metal paint spraying according to claim 6,
the three-stage absorption unit also comprises a volatile organic compound detector and a feedback circuit, the volatile organic compound detector is arranged between the demister and the waste gas outlet pipeline, and the volatile organic compound detector is used for sending a detection result to the feedback circuit;
when the detection result exceeds a preset value, the feedback circuit controls the secondary ejector to increase the injection quantity;
and when the detection result is lower than a preset value, the feedback circuit controls the secondary injector to reduce the injection quantity.
8. The reinforced absorption device for mixed metal paint spraying waste gas as recited in claim 1, wherein the secondary absorption unit further comprises a secondary air guide structure, the secondary air guide structure is disposed on the periphery of the secondary absorption unit, the secondary air guide structure connects the secondary absorption unit and the tertiary absorption unit, and the secondary air guide structure is provided with a secondary guide inclined plane in the secondary absorption unit, and the secondary guide inclined plane is inclined toward the vertical center direction of the secondary absorption unit.
9. The apparatus for enhanced absorption of exhaust gas from mixed metal paint spraying according to claim 8, wherein the angle of inclination of the secondary guide slope is 5 ° to 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240427.4U CN214764414U (en) | 2021-01-28 | 2021-01-28 | Mix metal spray paint waste gas and strengthen absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240427.4U CN214764414U (en) | 2021-01-28 | 2021-01-28 | Mix metal spray paint waste gas and strengthen absorbing device |
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| Publication Number | Publication Date |
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| CN214764414U true CN214764414U (en) | 2021-11-19 |
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| CN202120240427.4U Active CN214764414U (en) | 2021-01-28 | 2021-01-28 | Mix metal spray paint waste gas and strengthen absorbing device |
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- 2021-01-28 CN CN202120240427.4U patent/CN214764414U/en active Active
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