CN216125423U - Organic waste gas treatment system and workshop - Google Patents
Organic waste gas treatment system and workshop Download PDFInfo
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- CN216125423U CN216125423U CN202121552756.9U CN202121552756U CN216125423U CN 216125423 U CN216125423 U CN 216125423U CN 202121552756 U CN202121552756 U CN 202121552756U CN 216125423 U CN216125423 U CN 216125423U
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Abstract
The utility model discloses an organic waste gas treatment system and a production workshop, wherein the system comprises a fresh air supplement device for supplementing fresh air; the pretreatment device is used for pretreating waste gas discharged from a production workshop; the adsorption concentration device is used for carrying out adsorption concentration treatment on the pretreated waste gas and comprises an air inlet, a desorption gas outlet and a clean gas outlet, and the air inlet is connected with the air outlet end of the pretreatment device; the waste gas treatment device is used for treating the waste gas after adsorption concentration, and a gas inlet of the waste gas treatment device is connected with a desorption gas outlet of the adsorption concentration device; the air inlet of the main fan is connected with the clean gas outlet of the adsorption concentration device, and the air outlet is connected with the exhaust chimney through the exhaust pipeline; the recycling pipeline is used for recycling the clean gas; and the temperature and humidity adjusting device is arranged on the recycling pipeline and used for adjusting the temperature and humidity of the clean gas sent out by the main fan and then sending the clean gas into the production workshop again. The utility model has low operation cost, energy saving, environmental protection and high recycling benefit.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to an organic waste gas treatment system and a production workshop.
Background
With the rapid development of economy and industry, the problem of air pollution is increasingly serious, and the social common attention is paid to the treatment of organic waste gas. The organic waste gas mainly comes from petrochemical industry, printing industry, pharmacy industry, coating industry, paint spraying industry, leather processing industry, chemical fiber production industry, plastic processing industry and the like, relates to the production process of industries using a large amount of organic solvents, has complex components, is inflammable and explosive, has certain toxicity, can damage the atmospheric environment, hinder the sustainable development of economy, can damage the human body, and causes poisoning, carcinogenesis and even death.
The existing waste gas treatment system collects and treats waste gas of a production workshop to reach the standard and then directly discharges the waste gas to the atmosphere through a main air blower, the production workshop needs to continuously supplement fresh air through a fresh air system in a large amount, a large amount of energy consumption is needed to be spent in the process (the fresh air system supplements air and the main air blower conveys discharged gas to consume a large amount of capacity), in addition, a large amount of consumable materials are needed to be spent, the waste gas pollution discharge cost and other costs are also needed to be spent, a large amount of resource waste is caused, and the operation burden of an enterprise is increased. Particularly, automatic operation is realized in a plurality of production workshops at present, the environmental requirement on the production space is not as high as that of manual work, and the operation is particularly resource waste. Based on the above background, there is a need to develop an organic waste gas treatment system which has high organic waste gas treatment efficiency, low treatment cost, and can stably operate for a long time and realize waste gas recycling.
Disclosure of Invention
In view of the technical problems in the background art, an object of the present invention is to provide an organic waste gas treatment system that has high organic waste gas treatment efficiency, low treatment cost, and can operate stably for a long period of time and ensure constant temperature and humidity of the circulating gas.
The second purpose of the utility model lies in that, a workshop is given birth to in the production that adopts above-mentioned organic waste gas treatment system is provided, can show reduction energy consumption, realize that waste gas is not outer row basically, and permanent up to standard does not worry to carry the mark transformation.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
an organic exhaust gas treatment system, comprising:
the fresh air replenishing device is arranged in the production workshop and is used for replenishing fresh air;
the air inlet end of the pretreatment device is connected with a production workshop waste gas discharge port and is used for pretreating waste gas discharged from the production workshop;
the adsorption concentration device is used for carrying out adsorption concentration treatment on the pretreated waste gas and comprises an air inlet, a desorption gas outlet and a clean gas outlet, wherein the air inlet is connected with the air outlet end of the pretreatment device;
the waste gas treatment device is used for treating the waste gas after adsorption concentration, and a gas inlet of the waste gas treatment device is connected with a desorption gas outlet of the adsorption concentration device;
the air inlet of the main fan is connected with the clean gas outlet of the adsorption concentration device, and the air outlet is connected with the exhaust chimney through the exhaust pipeline;
one end of the recycling pipeline is connected with the air outlet of the main fan, and the other end of the recycling pipeline is connected with the air inlet of the production workshop and used for recycling the clean gas;
and the temperature and humidity adjusting device is arranged on the recycling pipeline and used for adjusting the temperature and humidity of the clean gas sent out by the main fan and then sending the clean gas into the production workshop again.
Preferably, the system further comprises a heat energy recovery device, and the heat energy recovery device is used for recovering the heat energy of the purified hot gas generated by the waste gas treatment device and then recycling the purified hot gas to the production workshop.
Preferably, the system also comprises a gas return pipeline which is respectively connected with the heat energy recovery device and a waste gas discharge port of the production workshop; the device is used for mixing purified gas obtained after heat energy is recovered by the heat energy recovery device with exhaust gas discharged from a production workshop, so that moisture of the exhaust gas discharged from the production workshop is reduced, and the air inlet requirement of the adsorption concentration device is met.
Further, the pretreatment device is one or a combination of a plurality of washing towers, dry filters, activated carbon adsorption units, bag-type dust collectors, filter cartridge dust collectors and electrostatic dust collectors.
Furthermore, the adsorption concentration device comprises one to more stages of adsorption concentration units which are connected in series, and the adsorption concentration units are zeolite rotating wheel adsorption concentration equipment or zeolite rotating drum adsorption concentration equipment.
Further, the waste gas treatment device comprises one or more than one stage of waste gas combustion units, and the waste gas combustion units are one or more of RTO, RCO, CO and TO.
Further, the production workshop is one of a coating workshop, a rubber processing workshop, a petrochemical workshop, an electronic equipment production workshop, a semiconductor manufacturing workshop, a chemical engineering workshop, a pharmaceutical workshop, a coating production workshop, a food workshop, a composite material production workshop, a printing workshop and a plastic processing workshop.
The utility model also discloses a production workshop which comprises the organic waste gas treatment system.
The utility model has the following beneficial effects:
1. most of the treated waste gas returns to a production workshop, is basically not discharged outside and reaches the standard for a long time without worrying about upgrading and modification;
2. the backflow compressed air greatly saves fresh air power and does not have filter material consumption;
3. the backflow compressed air can ensure constant temperature and constant humidity of the backflow gas and improve the product quality;
4. the waste heat is reused in a production workshop, and energy is saved.
Drawings
Fig. 1 is a schematic system structure diagram according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a system according to a second embodiment of the present invention.
Description of the main component symbols: 1. a fresh air supplement device; 2. a pretreatment device; 3. an adsorption concentration device; 4. an exhaust gas treatment device; 5. a main fan; 6. a production workshop; 7. an exhaust stack; 8. a heat energy recovery device; 80. a gas return line; 81. a humidity control device; 9. a temperature and humidity adjusting device.
Detailed Description
The utility model is further described with reference to the following drawings and detailed description.
Example one
As shown in fig. 1, the present embodiment discloses an organic waste gas treatment system, which includes a fresh air supplement device 1, a pretreatment device 2, an adsorption concentration device 3, a waste gas treatment device 4, a main blower 5, and a temperature and humidity adjusting device 9. The fresh air supplementing device 1 is used for supplementing fresh air to the production workshop 6, and the supplementing amount of the fresh air is the same as the air volume exhausted by the whole processing system. The organic waste gas treatment system of the embodiment is suitable for production workshops with high waste gas humidity and high requirements on inlet air temperature and humidity (such as constant temperature and constant humidity requirements), such as high-grade and high-requirement printing workshops, paint spraying workshops and the like.
The pretreatment device 2 is used for pretreating the waste gas discharged from the production workshop 6, and the dust removal rate is more than or equal to 99%. The pretreatment device 2 is one or a combination of a washing tower, a dry filter, an active carbon adsorption unit, a bag-type dust remover, a filter cartridge dust remover and an electrostatic dust remover. In this embodiment, the pretreatment device is a multi-stage dry filter.
The adsorption concentration device 3 is connected with the air outlet end of the pretreatment device 2 and is used for carrying out adsorption concentration treatment on the pretreated waste gas, and the main fan 5 is connected with a clean gas outlet of the adsorption concentration device 3; the adsorption concentration device 3 comprises one or more stages of adsorption concentration units connected in series, so that the volatile organic compounds of the adsorbed clean gas meet the recycling requirement (if the adsorption concentration unit is applied to an automatic paint spray booth, the content of the volatile organic compounds is less than 20 mg/m)3The indexes applied to the manual paint spray booth are as follows: the content of volatile organic compounds is less than 7mg/m3) The adsorption concentration device 3 may be boilingStone molecular sieve rotating wheels, zeolite molecular sieve rotating drums and the like; in this example, the adsorption concentration unit is a zeolite molecular sieve rotating wheel. Under the condition of low temperature, the organic waste gas with large air quantity passes through the zeolite molecular sieve rotating wheel, VOCs molecules are adsorbed on micropores, part of clean gas treated by the zeolite rotating wheel is discharged into the atmosphere through the main fan 5 and the exhaust chimney 7, and the rest clean gas is sent into the production workshop 6 again through the main fan 5 and the recycling pipeline 50. The proportion of the total amount of gas discharged into the atmosphere through the exhaust chimney 7 to the total amount of exhaust gas discharged from the production workshop 6 is less than or equal to 30 percent, and even less than or equal to 10 percent.
The waste gas treatment device 4 is connected with the desorption gas outlet of the adsorption concentration device 3, the waste gas treatment device 4 comprises one TO more stages of waste gas combustion units, the waste gas combustion units are one or more of RTO, RCO, CO and TO, and in the embodiment, the waste gas combustion units are RTO. The part of the zeolite rotating wheel adsorbing a large amount of VOCs enters a high-temperature desorption area, VOCs molecules on the adsorption concentration device 3 are desorbed by using low-air-volume high-temperature waste gas, the formed high-concentration waste gas is subjected to RTO full combustion treatment to obtain purified gas, and part of the purified gas is discharged into the atmosphere through an exhaust chimney 7.
The temperature and humidity adjusting device 9 is used for cooling the clean gas sent by the main fan 5 and then sending the cooled clean gas into the production workshop 6 again.
The treatment process of the embodiment comprises the following steps: 1) the organic waste gas generated in the production workshop 6 enters a multi-stage dry filter for pretreatment, and the dust removal rate is more than or equal to 99 percent; the fresh air supplementing device 1 supplements fresh air into the production workshop 6, wherein the supplement quantity of the fresh air is less than or equal to the air quantity discharged through the exhaust chimney 7; 2) the pretreated organic waste gas enters a zeolite rotating wheel for adsorption concentration treatment, the VOC purification rate is more than or equal to 95 percent, and the clean gas (the content of volatile organic compounds is less than 20 mg/m) is adsorbed by the zeolite rotating wheel3Even lower, e.g. less than 7mg/m volatile organic content in a production space for manual operation3) A small amount of the waste gas is discharged into an exhaust chimney 7 after passing through a main fan 5, and the rest of the waste gas is subjected to temperature and humidity adjustment treatment by a temperature and humidity adjustment device 9 and then is sent into a production workshop 6 again; 3) VOCs molecules on part of zeolite rotating wheels are desorbed by using small-air-volume high-temperature waste gas generated by RTO (regenerative thermal oxidizer), so that formed high-concentration zeolite rotating wheelsThe waste gas is fully combusted by RTO to obtain purified gas, the VOC purification rate is more than 99%, and part of the purified gas is discharged into the atmosphere through an exhaust chimney 7.
After the waste gas in the scheme of the application reaches the standard after being treated, most of the waste gas is supplemented into a production workshop through a recycling pipeline, the recycling proportion can reach more than 70 percent, even more than 90 percent, so that the requirement of the production workshop can be met only by properly supplementing a small amount of fresh air by a fresh air system (the quantity of the supplemented fresh air and the waste gas emission is less than or equal to 30 percent, even less than or equal to 10 percent), compared with the existing waste gas treatment system, the waste gas after being treated to reach the standard is directly discharged, and then a large amount of fresh air is supplemented through the fresh air system, a fresh air system with lower power can be used, and the investment cost and the operation cost of the fresh air system are reduced (the energy consumption and the material consumption cost of the fresh air system are reduced); meanwhile, only a small amount of waste gas is discharged from a production workshop (the discharge amount of the waste gas is less than or equal to 30 percent and even less than or equal to 10 percent), so that the discharge amount of the waste gas can be obviously reduced, and the discharge cost of the waste gas is reduced.
Example two
As shown in fig. 2, the present embodiment discloses an organic waste gas treatment system, and the present embodiment is different from the first embodiment only in that: the treatment system further comprises a heat energy recovery device 8 and a gas return pipeline 80, wherein the heat energy recovery device 8 is used for recovering heat energy of part of purified hot gas generated by the waste gas treatment device 4 and then recycling the heat energy to an oven and the like of the production workshop 6, so that energy is saved. The gas return pipeline 80 is respectively connected with the heat energy recovery device 8 and a discharge pipeline of the production workshop 6, purified gas cooled by the heat energy recovery device 8 is mixed with waste gas discharged from the production workshop 6 through the gas return pipeline 80, and the mixture is used for reducing the humidity of the waste gas discharged from the production workshop 6, so that the humidity and the temperature of the mixed gas are more in line with the requirements of the waste gas adsorption concentration device 3, and the treatment effect of the waste gas is improved; preferably, the gas recirculation line 80 is further provided with a humidity control device 81 for further reducing the humidity of the gas in the gas recirculation line 80. The organic waste gas treatment system of the embodiment is suitable for production workshops with high waste gas humidity, such as coating workshops, paint production workshops and printing workshops. The rest of the structure of the present embodiment is the same as that of the first embodiment.
The treatment process of the embodiment comprises the following steps: 1) the organic waste gas generated in the production workshop 6 enters a multi-stage dry filter for pretreatment, and the dust removal rate is more than or equal to 99 percent; the fresh air supplementing device 1 supplements fresh air into the production workshop 6, wherein the supplement quantity of the fresh air is less than or equal to the air quantity discharged through the exhaust chimney 7; 2) the pretreated organic waste gas enters a zeolite runner for adsorption concentration treatment, the VOC purification rate is more than or equal to 95%, the clean gas adsorbed by the zeolite runner is discharged into an exhaust chimney 7 in a small amount after passing through a main fan 5, and the rest of the clean gas is subjected to temperature and humidity adjustment treatment by a temperature and humidity adjustment device 9 and then is sent into a production workshop 6 again; 3) VOCs molecules on a part of zeolite rotating wheels are desorbed by using small-air-volume high-temperature waste gas generated by RTO, the formed high-concentration waste gas is fully combusted by RTO to obtain purified gas, the VOC purification rate is more than 99%, a part of the purified gas is discharged into the atmosphere through an exhaust chimney 7, a part of the purified gas is cooled by a heat energy recovery device 8 and then is mixed with the discharged waste gas of the production workshop 6 through a gas return pipeline 80, so that the humidity RH of the waste gas discharged from the production workshop 6 is less than or equal to 40%, and the mixed gas enters a pretreatment device 2.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. An organic exhaust gas treatment system, comprising:
the fresh air replenishing device is arranged in the production workshop and is used for replenishing fresh air;
the air inlet end of the pretreatment device is connected with a production workshop waste gas discharge port and is used for pretreating waste gas discharged from the production workshop;
the adsorption concentration device is used for carrying out adsorption concentration treatment on the pretreated waste gas and comprises an air inlet, a desorption gas outlet and a clean gas outlet, wherein the air inlet is connected with the air outlet end of the pretreatment device;
the waste gas treatment device is used for treating the waste gas after adsorption concentration, and a gas inlet of the waste gas treatment device is connected with a desorption gas outlet of the adsorption concentration device;
the air inlet of the main fan is connected with the clean gas outlet of the adsorption concentration device, and the air outlet is connected with the exhaust chimney through the exhaust pipeline;
one end of the recycling pipeline is connected with the air outlet of the main fan, and the other end of the recycling pipeline is connected with the air inlet of the production workshop and used for recycling the clean gas;
and the temperature and humidity adjusting device is arranged on the recycling pipeline and used for adjusting the temperature and humidity of the clean gas sent out by the main fan and then sending the clean gas into the production workshop again.
2. An organic exhaust gas treatment system according to claim 1, wherein: the system also comprises a heat energy recovery device which is used for recycling the purified hot gas generated by the waste gas treatment device to the production workshop after heat energy recovery.
3. An organic waste gas treatment system according to claim 2, wherein: the device also comprises a gas return pipeline which is respectively connected with the heat energy recovery device and the waste gas discharge port of the production workshop and used for mixing purified gas obtained after the heat energy is recovered by the heat energy recovery device with the waste gas discharged from the production workshop, so that the moisture of the waste gas discharged from the production workshop is reduced.
4. An organic exhaust gas treatment system according to claim 1, wherein: the pretreatment device is one or a combination of a washing tower, a dry filter, an activated carbon adsorption unit, a bag-type dust remover, a filter cartridge dust remover and an electrostatic dust remover.
5. An organic exhaust gas treatment system according to claim 1, wherein: the adsorption concentration device comprises one to more stages of adsorption concentration units which are connected in series, and the adsorption concentration units are zeolite rotating wheel adsorption concentration equipment or zeolite rotating drum adsorption concentration equipment.
6. An organic exhaust gas treatment system according to claim 1, wherein: the waste gas treatment device comprises one or more than one stage of waste gas combustion units, and the waste gas combustion units are one or more of RTO, RCO, CO and TO.
7. An organic exhaust gas treatment system according to claim 1, wherein: the production workshop be one of coating workshop, rubber processing workshop, petrochemical industry workshop, electronic equipment workshop, semiconductor manufacturing workshop, chemical industry workshop, pharmacy workshop, coating production workshop, food workshop, combined material workshop, printing workshop, plastics processing workshop.
8. An organic waste gas treatment workshop, its characterized in that: the organic waste gas treatment production plant comprises the organic waste gas treatment system of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121552756.9U CN216125423U (en) | 2021-07-08 | 2021-07-08 | Organic waste gas treatment system and workshop |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121552756.9U CN216125423U (en) | 2021-07-08 | 2021-07-08 | Organic waste gas treatment system and workshop |
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| Publication Number | Publication Date |
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| CN216125423U true CN216125423U (en) | 2022-03-25 |
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| CN202121552756.9U Active CN216125423U (en) | 2021-07-08 | 2021-07-08 | Organic waste gas treatment system and workshop |
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| CN (1) | CN216125423U (en) |
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- 2021-07-08 CN CN202121552756.9U patent/CN216125423U/en active Active
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