CN212081260U - VOCs waste gas catalytic combustion processing system - Google Patents
VOCs waste gas catalytic combustion processing system Download PDFInfo
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- CN212081260U CN212081260U CN202020517725.9U CN202020517725U CN212081260U CN 212081260 U CN212081260 U CN 212081260U CN 202020517725 U CN202020517725 U CN 202020517725U CN 212081260 U CN212081260 U CN 212081260U
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- carbon adsorption
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Abstract
The utility model provides a VOCs waste gas catalytic combustion treatment system, which comprises a filter, at least 1 active carbon adsorption bed, a hot air fan and a catalytic combustion chamber, wherein the filter is used for filtering VOCs waste gas; the activated carbon adsorption bed is filled with activated carbon, the activated carbon adsorption bed is communicated with the filter, and the activated carbon adsorption bed is provided with an adsorption bed air inlet electric valve and an adsorption bed air outlet electric valve; the hot air fan is communicated with the activated carbon adsorption bed, and a stripping air inlet electric valve is arranged between the hot air fan and the activated carbon adsorption bed; the catalytic combustion chamber is used for carrying out catalytic combustion on the waste gas desorbed from the activated carbon, the catalytic combustion chamber is communicated with the activated carbon adsorption beds, and the catalytic combustion chamber is provided with a catalytic combustion air inlet electric valve between the activated carbon adsorption beds. The VOCs waste gas catalytic combustion treatment system has the advantages of thorough treatment and purification of VOCs waste gas, no secondary pollution and simple operation and maintenance.
Description
Technical Field
The utility model relates to a VOCs exhaust-gas treatment technical field, more specifically relate to a VOCs waste gas catalytic combustion processing system.
Background
VOCs (volatile organic compounds containing) waste gas pollutants in the electronic industry are various in types and complex in components, and comprise hydrocarbons, nitriles, phenols, aldehydes and the like, and waste gas generated by heating a central feeding system (the raw material is high-grade nylon) mainly comprises phenol, cyclohexane, acrylonitrile, butadiene and the like; the waste gas generated by high-temperature molten plastics in an injection molding workshop comprises vinyl chloride, styrene, aromatic hydrocarbon, formaldehyde, acrolein and the like; the high-temperature sealing glue in the baking and sealing glue workshop mainly generates waste gas such as benzene, toluene, xylene and the like. Aiming at waste gas generated in different production workshops, a spray tower and an activated carbon adsorption process are adopted for treatment, or a spray tower and a UV photolysis purifier process are adopted for treatment.
For a spray tower and an activated carbon adsorption process, the temperature of waste gas is reduced on one hand, dust and water-soluble organic matters in the waste gas are removed on the other hand through water spraying, an activated carbon adsorber directly utilizes activated carbon with strong adsorbability to adsorb the organic matters VOCs in the waste gas, and the activated carbon is replaced after saturation. However, the circulating water generated by the spray tower has the problems of water pollution, high operation cost, short service cycle and large using amount of the activated carbon adsorbent, and the replaced activated carbon is dangerous waste, can generate secondary pollution and needs to be treated again.
For the spray tower and UV photolysis purifier technology, through water spraying, on one hand, the waste gas temperature is reduced, on the other hand, dust and water-soluble organic matters in the waste gas are removed, the UV photolysis purifier irradiates the organic waste gas by using high-energy UV light beams, the molecular chain structure of the organic waste gas is changed, and the molecular chain of the organic high molecular compound is degraded and converted into a low molecular compound under the irradiation of the high-energy UV light beams. And simultaneously decomposes oxygen molecules in the air to generate ozone. Ozone has strong oxidizing effect on organic matters and has good removing effect on malodorous gas and other waste gases. However, the circulating water generated by the spray tower has the problem of water pollution, the UV lamp set has high requirement on waste gas cleanliness and low purification rate (about 50%), the UV lamp set can reach the emission standard only by being combined with other processes, and secondary pollution exists. In addition, the UV lamp tube needs to be replaced regularly, and the operation, maintenance and management are complex.
Therefore, there is a need to provide a catalytic combustion treatment system for treating VOCs exhaust gas in the electronics industry to solve the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a VOCs waste gas catalytic combustion processing system, this VOCs waste gas catalytic combustion processing system purify thoroughly, do not have secondary pollution, operation maintenance simple to VOCs exhaust-gas treatment.
In order to achieve the aim, the utility model discloses a VOCs waste gas catalytic combustion treatment system, which comprises a filter, at least 1 active carbon adsorption bed, a hot air blower and a catalytic combustion chamber, wherein the filter filters the VOCs waste gas; the activated carbon adsorption bed is filled with activated carbon, the activated carbon adsorption bed is communicated with the filter, and the activated carbon adsorption bed is provided with an adsorption bed air inlet electric valve and an adsorption bed air outlet electric valve; the hot air fan is communicated with the activated carbon adsorption bed, and a stripping air inlet electric valve is arranged between the hot air fan and the activated carbon adsorption bed; the catalytic combustion chamber is used for carrying out catalytic combustion on the waste gas desorbed from the activated carbon, the catalytic combustion chamber is communicated with the activated carbon adsorption beds, and the catalytic combustion chamber is provided with a catalytic combustion air inlet electric valve between the activated carbon adsorption beds.
Compared with the prior art, when the VOCs waste gas catalytic combustion processing system of this application handled VOCs waste gas, open adsorption bed air inlet motorised valve, close adsorption bed air-out motorised valve, catalytic combustion air inlet motorised valve and blow off the air inlet motorised valve. The VOCs waste gas is separated and captured by the filter, the VOCs waste gas flows into the activated carbon adsorption bed after being processed by the filter, and organic components in the VOCs waste gas are adsorbed by the activated carbon in the activated carbon adsorption bed. After the waste gas is purified, the electric valve for air outlet of the adsorption bed is opened to discharge the waste gas. When the activated carbon adsorption is saturated, closing the adsorption bed air inlet electric valve and the adsorption bed air outlet electric valve, opening the catalytic combustion air inlet electric valve and the air stripping air inlet electric valve, starting the hot air blower, desorbing the activated carbon with saturated adsorption through hot air by the hot air blower, and allowing the desorbed waste gas to enter the catalytic combustion chamber for catalytic combustion, so that organic pollutants in the waste gas are converted into water and carbon dioxide to be purified and then discharged. And putting the desorbed and regenerated active carbon into use again. The VOCs waste gas catalytic combustion treatment system has the advantages of thorough treatment and purification of VOCs waste gas, no secondary pollution and simple operation and maintenance.
Preferably, the number of the activated carbon adsorption beds is multiple, and the plurality of activated carbon adsorption beds are arranged in parallel.
Preferably, the activated carbon adsorption beds share 1 first air inlet pipe, and the filter is communicated with the activated carbon adsorption beds through the first air inlet pipe.
Preferably, the activated carbon adsorption beds share 1 second air inlet pipe, and the hot air fan is communicated with the activated carbon adsorption beds through the second air inlet pipe.
Preferably, the plurality of activated carbon adsorption beds share 1 third air inlet pipe, and the catalytic combustion chamber is communicated with the activated carbon adsorption beds through the third air inlet pipe.
Preferably, the VOCs waste gas catalytic combustion processing system further comprises an induced draft fan and a chimney, the induced draft fan is communicated with the activated carbon adsorption beds, and the induced draft fan drives the purified waste gas of the activated carbon adsorption beds to be discharged from the chimney.
Preferably, the VOCs waste gas catalytic combustion processing system further comprises an air cooler communicated with the activated carbon adsorption bed.
Preferably, the catalytic combustion treatment system for the VOCs waste gas further comprises a walking frame connected with the activated carbon adsorption bed.
Preferably, the filter is a dry filter.
Preferably, a fire-fighting spray device is arranged in the activated carbon adsorption bed.
Drawings
Figure 1 is the utility model discloses VOCs waste gas catalytic combustion processing system's schematic diagram.
Fig. 2 is a schematic structural diagram of the additional walking frame of the catalytic combustion treatment system for waste gas of VOCs shown in fig. 1.
Fig. 3 is a schematic view of another aspect of the catalytic combustion treatment system for VOCs in fig. 1.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1, the catalytic combustion treatment system 100 for VOCs exhaust gas of the present application includes a filter 10, at least 1 activated carbon adsorption bed 20, a hot air blower 30, and a catalytic combustor 40. The filter 10 filters the VOCs exhaust gas, and separates and captures solid and liquid particles in the gas through a porous filter medium in the filter 10. In the present embodiment, the filter 10 is a dry filter, but not limited thereto. The activated carbon adsorption bed 20 is filled with activated carbon, for example, an adsorption cavity is formed in the activated carbon adsorption bed 20, the activated carbon is filled into the adsorption cavity, and the activated carbon is used for adsorbing organic components in the waste gas of the VOCs. The activated carbon adsorption bed 20 is communicated with the filter 10, and the activated carbon adsorption bed 20 is provided with an adsorption bed air inlet electric valve 21 and an adsorption bed air outlet electric valve 23. The inlet and outlet of waste gas are realized by opening and closing the adsorption bed air inlet electric valve 21 and the adsorption bed air outlet electric valve 23. The hot air blower 30 is communicated with the activated carbon adsorption bed 20, a stripping air inlet electric valve 31 is arranged between the hot air blower 30 and the activated carbon adsorption bed 20, the hot air blower 30 provides hot air to desorb saturated activated carbon, and hot air of the hot air blower 30 enters the stripping air inlet electric valve 31. The catalytic combustion chamber 40 is used for carrying out catalytic combustion on the waste gas desorbed by the activated carbon, the catalytic combustion chamber 40 is communicated with the activated carbon adsorption bed 20, a catalytic combustion air inlet electric valve 41 is arranged between the catalytic combustion chamber 40 and the activated carbon adsorption bed 20, and the waste gas enters the catalytic combustion chamber 40 by virtue of the catalytic combustion air inlet electric valve 41.
Referring to fig. 1-3, the system 100 for catalytic combustion treatment of VOCs waste gas further includes an induced draft fan 50 and a chimney 60, the induced draft fan 50 is communicated with the activated carbon adsorption bed 20, and the induced draft fan 50 drives the purified waste gas of the activated carbon adsorption bed 20 to be discharged from the chimney 60. The VOCs waste gas entering the activated carbon adsorption bed 20 is adsorbed with organic components thereof by activated carbon, so that the waste gas is purified, and the purified clean gas is discharged from a chimney 60 by the driving of the induced draft fan 50 without secondary pollution. Further, the catalytic combustion processing system 100 for VOCs exhaust gas further comprises an air cooler 70 communicated with the activated carbon adsorption bed 20. The hot air blower 30 blows hot air into the activated carbon adsorption bed 20, and organic matters in the saturated activated carbon are desorbed by the hot air at a high temperature and are carried away with the hot air, so that the activated carbon is regenerated. In order to avoid that the activated carbon adsorption bed 20 always works at a high temperature or the temperature is suddenly too high to influence the system operation, cold air can be supplemented properly through the air cooler 70, so that the operation safety and stability of the VOCs waste gas catalytic combustion processing system 100 are ensured. In a specific operation, the air cooler 70 and the hot air blower 30 may share 1 pipe to enter the activated carbon adsorption bed 20, but not limited thereto. In order to manage the activated carbon adsorption bed 20, a walking frame 80 connected to the activated carbon adsorption bed 20 is further provided, so that an operator can manage the VOCs waste gas catalytic combustion processing system 100 by means of the walking frame 80. In addition, be equipped with fire sprinkler 97 in the active carbon adsorption bed 20, when the condition of a fire appears in active carbon adsorption bed 20, fire sprinkler 97 can automatic spray and put out a fire to improve the security performance of system.
Referring to fig. 1 to 3, since the treatment after saturation of the activated carbon adsorption takes time, in order to continuously treat the VOCs waste gas, a plurality of activated carbon adsorption beds 20 are provided, and a plurality of activated carbon adsorption beds 20 are arranged in parallel. After the activated carbon adsorption of one of the activated carbon adsorption beds 20 is saturated, the corresponding adsorption bed air inlet electric valve 21 and adsorption bed air outlet electric valve 23 are closed, and the adsorption bed air inlet electric valve 21 and adsorption bed air outlet electric valve 23 of the other activated carbon adsorption bed 20 are opened to continue the activated carbon adsorption. Further, a plurality of activated carbon adsorption beds 20 share 1 first air inlet pipe 91, the communication between the filter 10 and the activated carbon adsorption beds 20 is realized by means of the first air inlet pipe 91, air inlet and air outlet are controlled by the adsorption bed air inlet electric valve 21 and the adsorption bed air outlet electric valve 23, and redundant structure caused by excessive installation of pipelines is avoided. The plurality of activated carbon adsorption beds 20 share 1 second air inlet pipe 93, the communication between the hot air blower 30 and the activated carbon adsorption beds 20 is realized by the second air inlet pipe 93, and air inlet is controlled by the air stripping air inlet electric valve 31. The multiple activated carbon adsorption beds 20 share 1 third air inlet pipe 95, the catalytic combustion chamber 40 is communicated with the activated carbon adsorption beds 20 through the third air inlet pipe 95, and air inlet is controlled through the catalytic combustion air inlet electric valve 41.
The operation of the present invention of the catalytic combustion treatment system 100 for VOCs with exhaust gas is described with reference to fig. 1-3:
after the VOCs waste gas is separated and captured by the filter 10, solid and liquid particles in the waste gas flow into one of the activated carbon adsorption beds 20 through the first air inlet pipe 91, organic components in the VOCs waste gas are adsorbed by the activated carbon of the activated carbon adsorption bed 20, and the VOCs waste gas is purified after adsorption and then is discharged from the chimney 60 through the driving of the induced draft fan 50. When the activated carbon adsorption is saturated, close this adsorption bed air inlet motorised valve 21 and adsorption bed air outlet motorised valve 23, open catalytic combustion air inlet motorised valve 41 and blow off air inlet motorised valve 31, start hot air blower 30, with the help of second air-supply line 93, hot air blower 30 provides hot-blast to this activated carbon adsorption bed 20, the activated carbon that will adsorb saturation desorbs through hot-blast, with the help of third air inlet pipe 95, desorption waste gas gets into catalytic combustion chamber 40 and carries out catalytic combustion, make the organic pollutant in the waste gas convert water and carbon dioxide and discharge after purifying, the activated carbon after desorption regeneration comes into use again. When desorption catalysis is carried out, the adsorption bed air inlet electric valve 21 and the adsorption bed air outlet electric valve 23 of the other activated carbon adsorption bed 20 are opened to carry out activated carbon adsorption on the VOCs waste gas, so that uninterrupted operation is guaranteed.
Compared with the prior art, when the VOCs waste gas catalytic combustion processing system 100 of this application handled VOCs waste gas, opened adsorption bed air inlet motorised valve 21, closed adsorption bed air-out motorised valve 23, catalytic combustion air inlet motorised valve 41 and blow off air inlet motorised valve 31. The VOCs waste gas is separated and captured by the filter 10 for solid and liquid particles, the VOCs waste gas is treated by the filter 10 and flows into the activated carbon adsorption bed 20, and the organic components in the VOCs waste gas are adsorbed by the activated carbon in the activated carbon adsorption bed 20. After the waste gas is purified, the electric valve 23 for air outlet of the adsorption bed is opened to discharge the waste gas. When the activated carbon adsorption is saturated, closing the adsorption bed air inlet electric valve 21 and the adsorption bed air outlet electric valve 23, opening the catalytic combustion air inlet electric valve 41 and the air stripping air inlet electric valve 31, starting the hot air fan 30, desorbing the activated carbon with saturated adsorption through hot air by the hot air fan 30, and allowing the desorbed waste gas to enter the catalytic combustion chamber 40 for catalytic combustion, so that organic pollutants in the waste gas are converted into water and carbon dioxide to be purified and then discharged. And putting the desorbed and regenerated active carbon into use again. The VOCs waste gas catalytic combustion treatment system 100 thoroughly purifies VOCs waste gas, has no secondary pollution and is simple to operate and maintain.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (10)
1. A system for catalytic combustion treatment of VOCs exhaust, comprising:
the filter is used for filtering the VOCs waste gas;
at least 1 active carbon adsorption bed filled with active carbon, the active carbon adsorption bed is communicated with the filter, and the active carbon adsorption bed is provided with an adsorption bed air inlet electric valve and an adsorption bed air outlet electric valve;
the hot air fan is communicated with the activated carbon adsorption bed, and a stripping air inlet electric valve is arranged between the hot air fan and the activated carbon adsorption bed;
the catalytic combustion chamber is used for carrying out catalytic combustion on the waste gas desorbed by the activated carbon, the catalytic combustion chamber is communicated with the activated carbon adsorption beds, and the catalytic combustion chamber is provided with a catalytic combustion air inlet electric valve between the activated carbon adsorption beds.
2. The system of claim 1, wherein the plurality of activated carbon adsorption beds are arranged in parallel.
3. The system of claim 2, wherein a plurality of the activated carbon adsorption beds share 1 first air inlet duct, and the filter is communicated with the activated carbon adsorption beds through the first air inlet duct.
4. The system of claim 2, wherein the activated carbon adsorption beds share 1 second air inlet duct, and the hot air blower is connected to the activated carbon adsorption beds through the second air inlet duct.
5. The system of claim 2, wherein the plurality of activated carbon adsorption beds share 1 third air inlet pipe, and the catalytic combustor is communicated with the activated carbon adsorption beds through the third air inlet pipe.
6. The catalytic combustion treatment system for VOCs waste gas as claimed in claim 1, further comprising an induced draft fan and a chimney, wherein said induced draft fan is in communication with said activated carbon adsorption bed, and said induced draft fan drives said activated carbon adsorption bed purified waste gas to be discharged from said chimney.
7. The system of claim 1, further comprising a cooling air blower in communication with the activated carbon adsorbent bed.
8. The system of claim 2, further comprising a traveling frame coupled to the activated carbon adsorption bed.
9. The system of claim 1 wherein the filter is a dry filter.
10. The system of claim 1, wherein a fire sprinkler is disposed in the activated carbon adsorption bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517725.9U CN212081260U (en) | 2020-04-09 | 2020-04-09 | VOCs waste gas catalytic combustion processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517725.9U CN212081260U (en) | 2020-04-09 | 2020-04-09 | VOCs waste gas catalytic combustion processing system |
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| Publication Number | Publication Date |
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| CN212081260U true CN212081260U (en) | 2020-12-04 |
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| CN202020517725.9U Active CN212081260U (en) | 2020-04-09 | 2020-04-09 | VOCs waste gas catalytic combustion processing system |
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