CN212855120U - Emission device for purifying volatile organic compounds - Google Patents
Emission device for purifying volatile organic compounds Download PDFInfo
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- CN212855120U CN212855120U CN202020806044.4U CN202020806044U CN212855120U CN 212855120 U CN212855120 U CN 212855120U CN 202020806044 U CN202020806044 U CN 202020806044U CN 212855120 U CN212855120 U CN 212855120U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model discloses a discharge device for purifying volatile organic compounds, wherein an exhaust fan is connected with a spray dust-removal cooling tower, a filter, an adsorption fan, an active carbon adsorption bed, an adsorption fan and a chimney in sequence through a pipeline, and pneumatic ball valves are arranged at the inlet and the outlet connected with the active carbon adsorption bed; the active carbon adsorption bed is also connected with a desorption fan and a catalytic combustion furnace through a pipeline in a circulating way; the catalytic combustion furnace is also connected with a chimney through a pipeline, and the inlet and the outlet connected with the activated carbon adsorption bed are respectively provided with a circulating pneumatic ball valve. Through the processes of adsorption, desorption, combustion and cooling, the organic waste gas with large air volume and low concentration is concentrated into organic waste gas with small flow and high concentration, and the concentrated high-concentration gas can be connected to combustion equipment for oxidation treatment and is discharged at high altitude after reaching the standard. Thus reducing environmental pollution, increasing the efficiency of treating VOCs, reducing the discharge of VOCs, and simultaneously greatly saving the investment of equipment and the operating cost of the system.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an environmental protection equipment field, concretely relates to purify volatile organic compound's discharging equipment.
[ background of the invention ]
VOCs, Volatile Organic Compounds (VOLATILE Organic Compounds), are a class of important gaseous pollutants widely present in the atmosphere, and are defined by the world health organization (WTO, 1989) as various Organic Compounds having a boiling point of 50 ℃ to 260 ℃ at ambient temperature. VOCs not only have direct influence on human health, ecological environment and the like, but also can generate secondary pollutants by participating in atmospheric photochemical reaction, such as ozone frequently mentioned by us, peroxyacetyl nitrate, organic aerosol and the like, and is one of important precursors causing air pollution. Volatile Organic Compounds (VOCs) are a general term for a class of organic pollutants which are ubiquitous and complex in composition in the air, and seriously threaten the health of people. VOCs play an important role in regional composite air pollution characterized by ozone (O3), fine particulate matters (PM2.5) and acid rain, and are one of bottlenecks restricting sustainable development of socioeconomic performance. In order to reduce environmental pollution, increase the efficiency of treating VOCs and reduce the discharge of VOCs; this research design one kind purifies volatile organic compound's discharging equipment, through absorption, desorption, burning and cooling process, and then concentrate the organic waste gas of big amount of wind, low concentration into little flow, high concentration organic waste gas, the high concentration gas after the concentration can be connected to combustion apparatus and carry out oxidation treatment, discharges at the high altitude after reaching standard. Therefore, the environmental pollution can be reduced, and the investment of equipment and the operating cost of the system are greatly saved.
[ Utility model ] content
In order to solve the problems, the discharge device for purifying the volatile organic compounds is provided, and the organic waste gas with large air volume and low concentration is concentrated into the organic waste gas with small flow and high concentration through the processes of adsorption, desorption, combustion and cooling, and the concentrated high-concentration gas can be connected to combustion equipment for oxidation treatment and is discharged at high altitude after reaching the standard. Thus reducing environmental pollution, increasing the efficiency of treating VOCs, reducing the discharge of VOCs, and simultaneously greatly saving the investment of equipment and the operating cost of the system.
The technical scheme of the utility model as follows:
a discharge device for purifying volatile organic compounds comprises an exhaust fan, a spray dedusting and cooling tower, a filter, an adsorption fan, an active carbon adsorption bed, a desorption fan, a catalytic combustion furnace and a chimney;
the exhaust fan is sequentially connected with the spraying dust-removing and cooling tower, the filter, the adsorption fan, the activated carbon adsorption bed, the adsorption fan and the chimney through pipelines, and pneumatic ball valves are arranged at an inlet and an outlet which are connected with the activated carbon adsorption bed;
the activated carbon adsorption bed is also circularly connected with a desorption fan and a catalytic combustion furnace through a pipeline, and inlet and outlet connected with the activated carbon adsorption bed are respectively provided with a circulating pneumatic ball valve;
the catalytic combustion furnace is also connected with a chimney through a pipeline.
Preferably, the number of the activated carbon adsorption beds installed is 3 or more.
Preferably, two circulating water tanks are arranged in the spraying dedusting cooling tower.
Preferably, the activated carbon adsorption bed is provided with a pipeline for introducing nitrogen, and the other end of the pipeline is connected with a nitrogen storage tank.
Preferably, the catalytic combustion furnace is provided with a explosion venting port.
Preferably, the pneumatic ball valve and the recirculating pneumatic ball valve are both mounted to the pipeline by flange connections.
[ description of the drawings ]
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a flow chart of the gas treatment process of the present invention;
FIG. 3 is a flow chart of desorption and catalytic combustion processes of the present invention;
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The technical scheme of the utility model as follows:
a discharge device for purifying volatile organic compounds comprises an exhaust fan, a spray dedusting and cooling tower, a filter, an adsorption fan, an active carbon adsorption bed, a desorption fan, a catalytic combustion furnace and a chimney;
the exhaust fan is sequentially connected with the spraying dust-removing and cooling tower, the filter, the adsorption fan, the activated carbon adsorption bed, the adsorption fan and the chimney through pipelines, and pneumatic ball valves are arranged at an inlet and an outlet which are connected with the activated carbon adsorption bed;
the activated carbon adsorption bed is also circularly connected with a desorption fan and a catalytic combustion furnace through a pipeline, and inlet and outlet connected with the activated carbon adsorption bed are respectively provided with a circulating pneumatic ball valve;
the catalytic combustion furnace is also connected with a chimney through a pipeline.
Preferably, the number of the activated carbon adsorption beds installed is 3 or more.
Preferably, two circulating water tanks are arranged in the spraying dedusting cooling tower.
Preferably, the activated carbon adsorption bed is provided with a pipeline for introducing nitrogen, and the other end of the pipeline is connected with a nitrogen storage tank.
Preferably, the catalytic combustion furnace is provided with a explosion venting port.
Preferably, the pneumatic ball valve and the recirculating pneumatic ball valve are both mounted to the pipeline by flange connections.
Gas treatment process:
high-temperature organic waste gas in working procedures such as workshop ovens, baking ovens and the like is led out by an exhaust fan and firstly enters a spray dedusting cooling tower, the temperature and the dust are reduced and removed and the voc is partially removed by circulating two circulating water tanks A, B in the spray dedusting cooling tower through a water pump, the water tanks are adjusted by a temperature control and water level meter, water is emptied and fed once in about 3 days, and the waste water is fed into a sewage station of a company for comprehensive treatment;
the waste gas after being treated by the spraying, dedusting and cooling tower for cooling and dedusting enters a bag filter, the waste gas enters the bag filter to filter dust and other impurities through G4 and F8 and then enters an activated carbon adsorption bed, at the moment, a pneumatic ball valve of the activated carbon adsorption bed is in an open state, a circulating pneumatic ball valve is in a closed state, the gas is purified after being adsorbed and purified by activated carbon adsorption tower equipment, and the purified gas is sent to a chimney by an adsorption fan to be discharged after reaching standards at high altitude. The bag filter removes fine particles from the gas, preventing contamination of the adsorbent behind.
Desorption and catalytic combustion processes:
the device is designed according to two basic principles of adsorption and catalytic combustion, adopts double gas paths to continuously work, one catalytic combustion chamber and 3 or more adsorption beds for alternative use.
The active adsorption bed is saturated after adsorbing for a certain time (about 6-10 days according to the working condition), and the active adsorption bed can be reused after being regenerated. If part of the active adsorption beds need to be regenerated, production does not need to be stopped, the unsaturated active adsorption beds continue to purify waste gas transmitted from the filter, the pneumatic ball valve is in an open state, the circulating pneumatic ball valve is in a closed state, only the pneumatic ball valve at the inlet and the outlet of the active adsorption beds needing to be regenerated needs to be closed, the desorption fan and the electric heater in the catalytic combustion furnace are started, part of fresh air is led into catalytic combustion furnace equipment from the environment, the preheating catalytic combustion furnace is started, after the temperature in the catalytic combustion furnace reaches 190 ℃ (the temperature can be adjusted and cannot be adjusted to 250 ℃) for catalysis, the hot air valve is started to send hot air into the active adsorption beds needing to be regenerated, the active adsorption beds are heated, organic matters adsorbed on the active adsorption beds are blown off, and the desorbed matters are sent into the catalytic combustion furnace along with airflow by the desorption fan to be burnt into carbon dioxide and water vapor to be discharged, closing the circulating pneumatic ball valve, opening the pneumatic ball valve, and allowing the regenerated activated carbon to be adsorbed next time; during desorption, the purification operation can be carried out using another active adsorption bed, which is suitable for both continuous and discontinuous operation.
The catalytic combustion furnace adopts heat accumulating type catalytic equipment, utilizes the high specific surface area and the high-efficiency heat conduction efficiency of heat accumulating ceramics, can effectively recover combustion heat energy, and reduces the operating cost of the catalytic equipment. The catalytic combustion furnace adopts electric heating to heat gas to about 300 ℃ and then enters the catalytic chamber, under the action of a catalyst, organic matters in the gas are decomposed into substances such as CO 2, H2O and the like, heat is released simultaneously, the temperature of the gas is further raised, the high-temperature gas is discharged after partial heat is recovered by heat storage ceramic, the temperature of the discharged gas is about 60-90 ℃, the gas is divided into two parts, one part of the gas is discharged into a chimney after being cooled and discharged, the majority of the gas returns to a built-in heat exchanger of the catalytic combustion furnace, and the gas is sent into an adsorber after the temperature of the gas is further raised and is used as desorption heat. When the concentration of the organic waste gas sent into the catalytic combustion furnace by the desorption fan along with the desorption airflow reaches above 2000ppm, the organic waste gas can maintain spontaneous combustion in the catalytic combustion furnace without external heating. And a part of the tail gas after combustion is discharged into the atmosphere, and most of the tail gas is sent to an adsorption bed for regeneration of the active carbon. Thus, the heat energy required by combustion and adsorption can be met, and the purpose of energy conservation is achieved. The desorption temperature of the gas is controlled, the concentration of organic matters in the desorbed gas can be controlled, and the heat balance required by catalytic combustion and desorption is achieved by utilizing the heat released by combustion, so that the operation of the system is maintained, and the operation cost can be well saved.
The installed nitrogen machine, the pipeline of the nitrogen machine and the explosion venting port of the catalytic combustion furnace play a role in fire protection, and if the catalytic combustion furnace is on fire, the nitrogen machine and the nitrogen tank are opened, so that the nitrogen plays a role in fire extinguishing.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. An exhaust device for purifying volatile organic compounds, comprising: the device comprises an exhaust fan, a spray dedusting and cooling tower, a filter, an adsorption fan, an activated carbon adsorption bed, a desorption fan, a catalytic combustion furnace and a chimney;
the exhaust fan is sequentially connected with the spraying dust-removing and cooling tower, the filter, the adsorption fan, the activated carbon adsorption bed, the adsorption fan and the chimney through pipelines, and pneumatic ball valves are arranged at an inlet and an outlet which are connected with the activated carbon adsorption bed;
the activated carbon adsorption bed is also circularly connected with a desorption fan and a catalytic combustion furnace through a pipeline, and inlet and outlet connected with the activated carbon adsorption bed are provided with circular pneumatic ball valves;
the catalytic combustion furnace is also connected with a chimney through a pipeline.
2. A dispensing device for the decontamination of volatile organic compounds as claimed in claim 1, wherein: the number of the active carbon adsorption beds installed is 3 or more.
3. A dispensing device for the decontamination of volatile organic compounds as claimed in claim 1, wherein: two circulating water tanks are arranged in the spraying dedusting cooling tower.
4. A dispensing device for the decontamination of volatile organic compounds as claimed in claim 1, wherein: the active carbon adsorption bed is provided with a pipeline for introducing nitrogen, and the other end of the pipeline is connected with a nitrogen storage tank.
5. A dispensing device for the decontamination of volatile organic compounds as claimed in claim 1, wherein: the catalytic combustion furnace is provided with an explosion venting port.
6. A dispensing device for the decontamination of volatile organic compounds as claimed in claim 1, wherein: the pneumatic ball valve and the circulating pneumatic ball valve are both arranged on the pipeline through flange connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020806044.4U CN212855120U (en) | 2020-05-14 | 2020-05-14 | Emission device for purifying volatile organic compounds |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020806044.4U CN212855120U (en) | 2020-05-14 | 2020-05-14 | Emission device for purifying volatile organic compounds |
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| CN212855120U true CN212855120U (en) | 2021-04-02 |
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| CN202020806044.4U Expired - Fee Related CN212855120U (en) | 2020-05-14 | 2020-05-14 | Emission device for purifying volatile organic compounds |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849397A (en) * | 2022-06-20 | 2022-08-05 | 淄博通普真空设备有限公司 | Resin sand casting waste gas environmental protection treatment device |
| CN114870566A (en) * | 2022-05-24 | 2022-08-09 | 广州金鹏环保工程有限公司 | Two-phase flow circulating adsorption system |
| CN114904359A (en) * | 2022-05-05 | 2022-08-16 | 大连大学 | Device for selectively removing CO and using method thereof |
| CN116951998A (en) * | 2023-09-20 | 2023-10-27 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
-
2020
- 2020-05-14 CN CN202020806044.4U patent/CN212855120U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904359A (en) * | 2022-05-05 | 2022-08-16 | 大连大学 | Device for selectively removing CO and using method thereof |
| CN114904359B (en) * | 2022-05-05 | 2023-06-27 | 大连大学 | Device for selectively removing CO and application method thereof |
| CN114870566A (en) * | 2022-05-24 | 2022-08-09 | 广州金鹏环保工程有限公司 | Two-phase flow circulating adsorption system |
| CN114870566B (en) * | 2022-05-24 | 2023-02-28 | 广州金鹏环保工程有限公司 | Two-phase flow circulating adsorption system |
| CN114849397A (en) * | 2022-06-20 | 2022-08-05 | 淄博通普真空设备有限公司 | Resin sand casting waste gas environmental protection treatment device |
| CN116951998A (en) * | 2023-09-20 | 2023-10-27 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
| CN116951998B (en) * | 2023-09-20 | 2023-11-28 | 佛山市天禄智能装备科技有限公司 | Kiln with VOCs waste gas catalytic combustion processing system |
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