CN211612149U - VOCs waste gas treatment system for coating workshop - Google Patents
VOCs waste gas treatment system for coating workshop Download PDFInfo
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- CN211612149U CN211612149U CN201921829092.9U CN201921829092U CN211612149U CN 211612149 U CN211612149 U CN 211612149U CN 201921829092 U CN201921829092 U CN 201921829092U CN 211612149 U CN211612149 U CN 211612149U
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Abstract
The utility model provides a painting shop VOCs exhaust-gas treatment system, this system of VOCs exhaust-gas treatment system include concentration monitor, adsorption module, adsorption fan, desorption fan, catalysis bed, heat exchanger and intelligent control ware, the utility model discloses detect the judgement through the entry concentration under intelligent control ware's control, real-time intelligent regulation system's function has the advantage that reduces equipment operation energy consumption, improve equipment service life and the simplified operation degree of difficulty. The paint spraying device is particularly suitable for large-scale coating workshops such as ships, engineering machinery and the like with large air quantity and obvious VOCs concentration fluctuation.
Description
Technical Field
The utility model relates to a VOCs administers the technique, concretely relates to application workshop VOCs exhaust-gas treatment system.
Technical Field
With the development of industry, volatile organic compounds (abbreviated as VOCs) have become one of important atmospheric pollutants, and countries and places have developed corresponding standards to standardize the treatment of VOCs.
At present according to the concentration of VOCs and the amount of wind difference, have different processing technology, the VOCs waste gas treatment to the undulant application shop of the big concentration of amount of wind more adopts fixed bed adsorption concentration + catalytic combustion technique at present, utilizes adsorbing material such as active carbon, molecular sieve can reach standard after the VOCs waste gas adsorption concentration that produces in the spraying process discharges, and the high concentration VOCs waste gas of desorption gets into the catalytic bed and burns simultaneously. Because the painting workshop has the characteristics of short painting time, high concentration, long curing time, low concentration, large air quantity and the like, in order to meet the requirement of environmental protection, a VOCs waste gas treatment system needs to be kept in a full-power normally-open state when painting and curing, the system operation cost is high, great economic burden is brought to enterprises, and great energy waste and equipment loss are caused simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model aims to the not enough of above-mentioned prior art, the utility model aims to provide a painting workshop VOCs exhaust-gas treatment system and processing method, this system distinguishes through entry concentration detection under intelligent control ware's control, and real-time intelligent regulation system's function has the advantage that reduces equipment operation energy consumption, improve equipment service life and the simplified operation degree of difficulty. The paint spraying device is particularly suitable for large-scale coating workshops such as ships, engineering machinery and the like with large air quantity and obvious VOCs concentration fluctuation.
In order to achieve the above object, the utility model discloses a technical solution as follows:
the utility model provides a painting shop VOCs exhaust-gas treatment system which characterized in that: the system comprises a concentration monitor, an adsorption module, an adsorption fan, a desorption fan, a catalytic bed, a heat exchanger and an intelligent controller, wherein the adsorption module consists of a 1# adsorption bed, a 2# adsorption bed, … and an n # adsorption bed, n is a positive integer of more than 6, the inlet concentration monitor is positioned on an inlet pipeline of the VOCs waste gas, first inlets of the 1# adsorption bed, the 2# adsorption bed, … and the n # adsorption bed of the adsorption module are connected with an inlet pipeline of the VOCs waste gas, a second inlet is connected with a first outlet of the heat exchanger, first outlet pipelines of the 1# adsorption bed, the 2# adsorption bed, the … and the n # adsorption bed are connected with an exhaust cylinder through the adsorption fan, a second outlet pipeline is connected with the exhaust cylinder through the catalytic bed, the desorption fan and the heat exchanger, an output end of the inlet concentration monitor is connected with an input end of the intelligent controller through a signal line, the output end of the intelligent controller is respectively connected with the control ends of the adsorption module, the adsorption fan, the desorption fan, the catalytic bed and the heat exchanger, and the heat exchanger provides a heat source for desorption.
The adsorption fan and the desorption fan are both frequency conversion fans.
The method for treating the VOCs waste gas in the coating workshop by using the VOCs waste gas treatment system in the coating workshop is characterized by comprising the following steps of: the method comprises the following working steps:
1) starting the intelligent controller, under the control of the intelligent controller, the inlet VOCs concentration detector measures the VOCs waste gas concentration of the coating workshop and inputs the VOCs waste gas concentration measured value into the intelligent controller,
2) the intelligent controller judges the concentration of the VOCs waste gas and performs corresponding control:
firstly, when the concentration of VOCs waste gas is high and a large painting workshop is in a paint spraying state, the intelligent controller controls the adsorption fan, the desorption fan and the catalytic bed to run at 100% power, the running frequency of the fan is 50HZ, n-1 adsorption beds are used for adsorption and 1 adsorption bed is used for desorption in n adsorption beds of the adsorption module, the cycle switching time of a single adsorption bed of the adsorption module is T, and the treatment equipment achieves the equipment treatment air volume to meet the painting workshop spraying treatment requirement;
when the concentration of VOCs waste gas is in a middle-high state and a large-scale coating workshop is in a fluidized state, the intelligent controller controls the adsorption fan, the desorption fan and the catalytic bed to run at 75% power, the cycle switching time of a single adsorption bed in the adsorption module is 1.5T, namely the operation frequency of the adsorption fan and the desorption fan runs according to 40HZ, n-3 adsorption beds in n adsorption beds are in adsorption, 2 adsorption beds are idle, 1 adsorption bed is in desorption, and the air volume of the catalytic bed is 75%, so that the purposes of saving fan operation energy consumption, reducing electric heating power consumption, and leaving a part of adsorption beds vacant are achieved, the service life of equipment is prolonged, and meanwhile, the treatment requirement of the coating workshop can be met;
when the concentration of VOCs waste gas is low and a large painting workshop is in a curing state, the intelligent controller controls the adsorption fan, the desorption fan and the catalytic bed to run at 50% of power, the cycle switching time of a single adsorption bed of the adsorption module is 2T, namely, the operation frequency of the adsorption fan and the desorption fan runs at 30HZ, n-5 adsorption beds are used for adsorption, 4 adsorption beds are idle, 1 adsorption bed is used for desorption, and the air quantity of the catalytic bed is 50%, so that the purposes of saving the operation energy consumption of the fan, reducing the power consumption of electric heating and idling more adsorption beds are achieved, the service life of equipment is prolonged, and meanwhile, the processing requirement of the painting workshop can be met.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an entry VOCs concentration detection appearance monitoring entry VOCs concentration under intelligent control's control, the completion is right adsorption fan, desorption fan and switching cycle's automatic intelligent control, realize different treatment power and procedure under different stages, show the reduction to equipment operation energy consumption.
The utility model has the advantages of reduce equipment operation energy consumption, improve equipment service life and the intelligent control of the simplified operation degree of difficulty.
Drawings
Fig. 1 is the utility model discloses to undulant application workshop VOCs exhaust-gas treatment system of the big concentration of amount of wind and flow schematic diagram.
In the figure: 1-inlet VOCs concentration detector, 2-multiple adsorption beds, 3-adsorption fan, 4-desorption fan, 5-catalytic bed, 6-heat exchanger, and 7-intelligent controller.
Detailed Description
The technical solution of the present invention will be described in detail and fully with reference to the accompanying drawings, wherein the embodiments are only some embodiments of the present invention, and not all embodiments of the present invention. Based on the following embodiments of the present invention, all other technical solutions obtained by a person having ordinary skill in the art without creative work shall fall within the scope of the present invention.
Please refer to fig. 1, fig. 1 is the utility model discloses to undulant painting shop VOCs exhaust-gas treatment system of the big concentration of amount of wind and flow schematic diagram, it can be seen from the figure, the utility model discloses to undulant painting shop VOCs exhaust-gas treatment system of the big concentration of amount of wind, including concentration monitor 1, adsorption module 2, adsorption fan 3, desorption fan 4, catalytic bed 5, heat exchanger 6 and intelligent control 7, adsorption module 2 constitute by 1# adsorption bed, 2# adsorption bed, …, n # adsorption bed, n is more than 6 positive integers, import concentration monitor 1 be located the inlet tube way of VOCs waste gas, the first entry of 1# adsorption bed, 2# adsorption bed, …, n # adsorption bed of adsorption module 2 link to each other with the inlet tube way of VOCs waste gas, the second entry with the first export of heat exchanger 6 link to each other, 1# adsorption bed, The first outlet pipeline of the 2# adsorption bed, … and the n # adsorption bed is connected with the exhaust funnel through the adsorption fan 3, the second outlet pipeline is connected with the exhaust funnel through the catalytic bed 5, the desorption fan 4 and the heat exchanger 6, the output end of the inlet concentration monitor 1 is connected with the input end of the intelligent controller 7 through a signal line, and the output end of the intelligent controller 7 is respectively connected with the control ends of the adsorption module 2, the adsorption fan 3, the desorption fan 4, the catalytic bed 5 and the heat exchanger 6.
The adsorption fan 3 and the desorption fan 4 both adopt variable frequency fans.
The method for treating the VOCs waste gas in the coating workshop by using the VOCs waste gas treatment system in the coating workshop comprises the following working steps:
1) starting the intelligent controller 7, under the control of the intelligent controller 7, the inlet VOCs concentration detector 1 measures the VOCs waste gas concentration of the coating workshop and inputs the VOCs waste gas concentration measured value into the intelligent controller 7,
2) and the intelligent controller 7 judges the concentration of the VOCs waste gas and performs corresponding control:
firstly, when the concentration of VOCs waste gas is high, a large-scale painting workshop is in a painting stage, and the state of the VOCs at an inlet is in a painting state, the intelligent controller 7 controls the adsorption fan 3, the desorption fan 4 and the catalytic bed 5 to enter 100% power operation, the fan operation frequency is 50HZ, n-1 adsorption beds in n adsorption beds of the adsorption module 2 are adsorbing, 1 adsorption bed is desorbing, the cycle switching time of a single adsorption bed in the adsorption module 2 is T, and the treatment equipment achieves the equipment treatment air volume and meets the painting workshop spraying treatment requirement;
when the concentration of the VOCs waste gas is in a middle-high state and a large-scale coating workshop is in a fluidized state, the intelligent controller 7 controls the adsorption fan 3, the desorption fan 4 and the catalytic bed 5 to run at 75% of power, the cycle switching time of a single adsorption bed in the adsorption module 2 is 1.5T, namely the operation frequency of the adsorption fan 3 and the desorption fan 4 runs according to 40HZ, n-3 adsorption beds in n adsorption beds are in adsorption, 2 adsorption beds are idle, 1 adsorption bed is in desorption, and the air volume of the catalytic bed 5 is 75%, so that the purposes of saving the operation energy consumption of the fans, reducing the power consumption of electric heating, and idling partial adsorption beds, prolonging the service life of equipment are achieved, and meanwhile, the treatment requirement of the coating workshop can be met;
when the concentration of the VOCs waste gas is low and a large painting workshop is in a curing state, the intelligent controller 7 controls the adsorption fan 3, the desorption fan 4 and the catalytic bed 5 to run at 50% of power, the cycle switching time of a single adsorption bed of the adsorption module 2 is 2T, namely, the running frequency of the adsorption fan 3 and the desorption fan 4 runs according to 30HZ, n-5 adsorption beds in the n adsorption beds are used for adsorption, 4 adsorption beds are idle, 1 adsorption bed is used for desorption, and the air volume of the catalytic bed 5 is 50%, so that the purposes of saving the running energy consumption of the fans, reducing the power consumption of electric heating, idling more adsorption beds, prolonging the service life of equipment and meeting the processing requirement of the painting workshop are achieved.
VOCs organic waste gas is discharged through an adsorption fan 3 after being adsorbed by a plurality of adsorption beds 2 after being detected by an inlet VOCs concentration detector 1. Wherein entry VOCs concentration detector 1 distinguishes the state foundation between the application as concentration detection, a plurality of adsorbent beds 2, and wherein n-1 adsorbent bed is in adsorption state, and 1 adsorbent bed is in desorption state, and adsorption fan 3 provides the power supply for the adsorption process.
For the plurality of adsorption beds 2, 1 adsorption bed with saturated adsorption enters the catalytic bed 5 for catalytic combustion after desorption, and is discharged through the exhaust funnel after passing through the desorption fan 4 and the heat exchanger 6. The catalytic bed 5 catalyzes and burns the concentrated VOCs waste gas, the desorption fan 4 provides a power source for the desorption process, and the heat exchanger 6 provides a heat source for desorption.
The experiment shows that the utility model discloses under intelligent control ware's control, through entry VOCs concentration detection appearance monitoring entry VOCs concentration, it is right to accomplish adsorption fan, desorption fan and switching cycle's automatic intelligent control, realize different treatment power and procedure under different stages, show the reduction to equipment operation energy consumption.
The utility model discloses differentiate through entry concentration detection under intelligent control ware's control, real-time intelligent regulation system's function has the advantage that reduces equipment operation energy consumption, improve equipment service life and the simplified operation degree of difficulty. The paint spraying device is particularly suitable for large-scale coating workshops such as ships, engineering machinery and the like with large air quantity and obvious VOCs concentration fluctuation.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (2)
1. The utility model provides a painting shop VOCs exhaust-gas treatment system which characterized in that: the system comprises a concentration monitor (1), an adsorption module (2), an adsorption fan (3), a desorption fan (4), a catalytic bed (5), a heat exchanger (6) and an intelligent controller (7), wherein the adsorption module (2) consists of a 1# adsorption bed, a 2# adsorption bed, … and an n # adsorption bed, n is a positive integer more than 6, the concentration monitor (1) is positioned on an inlet pipeline of the VOCs waste gas, first inlets of the 1# adsorption bed, the 2# adsorption bed, … and the n # adsorption bed of the adsorption module (2) are connected with an inlet pipeline of the VOCs waste gas, a second inlet is connected with a first outlet of the heat exchanger (6), first outlet pipelines of the 1# adsorption bed, the 2# adsorption bed, … and the n # adsorption bed are connected with an exhaust cylinder through the adsorption fan (3), and a second outlet pipeline is connected with an exhaust cylinder through the catalytic bed (5), Desorption fan (4), heat exchanger (6) link to each other with the aiutage, the output of concentration monitor (1) through the signal line with the input of intelligent control ware (7) link to each other, the output of intelligent control ware (7) respectively with the control end of adsorption module (2), adsorption fan (3), desorption fan (4), catalytic bed (5), heat exchanger (6) link to each other, heat exchanger (6) do the desorption provide the heat source.
2. The paint shop VOCs exhaust treatment system of claim 1, wherein: the adsorption fan (3) and the desorption fan (4) both adopt variable frequency fans.
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| CN201921829092.9U CN211612149U (en) | 2019-10-29 | 2019-10-29 | VOCs waste gas treatment system for coating workshop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950130A (en) * | 2022-06-20 | 2022-08-30 | 济南嘉禾瑞丰科技开发有限公司 | Middle-low concentration VOCS high saturation adsorption purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950130A (en) * | 2022-06-20 | 2022-08-30 | 济南嘉禾瑞丰科技开发有限公司 | Middle-low concentration VOCS high saturation adsorption purification device |
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