CN219933999U - VOCs industrial tail gas treatment system - Google Patents
VOCs industrial tail gas treatment system Download PDFInfo
- Publication number
- CN219933999U CN219933999U CN202321466629.6U CN202321466629U CN219933999U CN 219933999 U CN219933999 U CN 219933999U CN 202321466629 U CN202321466629 U CN 202321466629U CN 219933999 U CN219933999 U CN 219933999U
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- CN
- China
- Prior art keywords
- tail gas
- combustion air
- flameless
- combustion
- industrial tail
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 64
- 238000002485 combustion reaction Methods 0.000 claims abstract description 104
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 68
- 239000002737 fuel gas Substances 0.000 claims description 33
- 239000002918 waste heat Substances 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
Abstract
The utility model provides a VOCs industrial tail gas treatment system, which comprises a combustion device, a heat exchange device, a heat recovery device and a combustion air conveying device, wherein the heat exchange device comprises a VOCs industrial tail gas preheater and a combustion air preheater, the combustion device is a flameless constant-temperature direct-combustion device, and the combustion air conveying device comprises a draught fan and a blower; the treatment system can treat the VOCs industrial tail gas, can completely oxidize the VOCs industrial gas without generating NOx, furthest recovers heat, ensures that the exhaust of the VOCs industrial tail gas reaches the standard, protects the environment, saves resources and has certain economic benefit.
Description
Technical Field
The utility model relates to a VOCs industrial tail gas treatment system, in particular to a VOCs industrial tail gas treatment system, which ensures that the industrial tail gas emission meets the national current standard.
Background
Chemical, petrochemical and coal chemical industryAnd the like, and a large amount of industrial tail gas containing VOCs is produced every year. The direct discharge is wasteful of resources and pollutes the environment, requiring its disposal. The traditional methods are adsorption, desorption, heat storage combustion and the like, but the tail gases have larger heat value range, the traditional treatment method or a large amount of greenhouse gases are discharged or potential safety hazards exist, energy is wasted, and the tail gases are difficult to effectively recycle and utilize by adopting the conventional technology, so that the environment does not reach the standard. The flameless constant-temperature direct combustion technology is a latest treatment technology which is used for replacing the traditional tail gas treatment mode, realizing energy conservation and emission reduction, does not generate secondary pollutants and meets the national increasingly strict emission requirements of VOC gas in the tail gas of industrial devices. The technology is very suitable for being applied to the treatment of low-heating-value gas of domestic chemical equipment (such as CO of coal chemical equipment) 2 Stripping gas, low-temperature methanol washing exhaust gas, etc.), the construction investment of the device can be greatly reduced, the occupied area of the device can be saved, and the operation and maintenance cost can be reduced. The method is safe and efficient, can realize carbon emission reduction and has wide application range, and becomes a mainstream technology for VOCs treatment.
Disclosure of Invention
The utility model aims to provide a VOCs industrial tail gas treatment system. Realizes the standard emission of industrial tail gas containing VOCs, fully recovers energy and realizes carbon emission reduction.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a VOCs industrial tail gas processing system, includes burner, heat transfer device, heat recovery device and combustion air conveyor, heat transfer device includes combustion air pre-heater, VOCs and industrial tail gas pre-heater, burner is flameless constant temperature direct combustion burner, heat recovery device is exhaust-heat boiler, combustion air conveyor includes draught fan and air-blower, wherein: the hot end inlet of the VOCs industrial tail gas preheater is connected with a smoke outlet at one end of the flameless constant-temperature direct-fired combustion device, the hot end smoke outlet of the VOCs industrial tail gas preheater is connected with a hot end inlet of the combustion air preheater, the hot end smoke outlet of the combustion air preheater is connected with a hot end inlet of the waste heat boiler, the hot end outlet of the waste heat boiler is connected with an inlet of the induced draft fan, and the outlet of the induced draft fan is connected with a chimney; the cold end outlet of the VOCs industrial tail gas preheater is connected with the inlet of the flameless constant-temperature direct-combustion device, and the cold end outlet of the combustion air preheater is connected with the combustion air inlet of the flameless constant-temperature direct-combustion device; the blower is connected with a cold end inlet of the combustion air preheater; the fuel gas inlet section of the flameless constant-temperature direct-combustion device is connected with a fuel gas main pipeline; and the inlet of the cold section of the VOCs industrial tail gas preheater is connected with a main pipeline of the VOCs industrial tail gas.
Preferably, the flameless constant-temperature direct-fired combustion device is provided with a VOCs industrial tail gas nozzle, and the VOCs industrial tail gas nozzle is connected with a cold end outlet of the VOCs industrial tail gas preheater.
Preferably, the flameless constant temperature direct combustion device is provided with a combustion air nozzle, and the combustion air nozzle is connected with a cold end outlet of the combustion air preheater.
Preferably, the flameless constant temperature direct combustion device is provided with a fuel gas nozzle, and the fuel gas nozzle is connected with a fuel gas supply device through a fuel gas pipeline.
Preferably, the fuel gas nozzle inlet line is switchable from a fuel gas line into a combustion air line.
The flameless constant temperature direct combustion device has variable internal shape, and can be provided with a plurality of fuel gas nozzles, VOCs industrial tail gas nozzles and combustion air nozzles which are tightly surrounded and uniformly distributed. All the nozzles are inserted nozzles, the inner wall of the combustion chamber is lined with heat insulating material, and a plurality of temperature sensors are arranged in the nozzle opening and the combustion chamber of the flameless constant-temperature direct-combustion device. Therefore, even distribution of the internal temperature of the flameless constant temperature direct-fired combustion device can be guaranteed under the flameless condition, the lowest temperature under the operating condition can be guaranteed to be more than 600 ℃, two sets of pressure gauges, electric valves and fuel gas nozzle inlet pipelines which are arranged on the fuel gas nozzle inlet pipeline can be switched into the combustion air pipeline through the electric valves on the combustion air nozzle inlet pipeline, the oxygen content in tail gas of the flameless constant temperature direct-fired combustion device is controlled to be about 3% -10%, the internal temperature of the flameless constant temperature direct-fired combustion device is controlled to be 750-1350 ℃, the stable and even distribution of the internal temperature of the flameless constant temperature direct-fired combustion device is guaranteed, NOx is prevented from being generated, and full recovery and utilization of heat can be guaranteed.
The beneficial effects of the utility model are as follows:
above-mentioned VOCs industrial tail gas processing system can enough handle VOCs industrial tail gas, can not generate NOx again, furthest's recovery heat, both environmental recovery energy has economic benefits again.
Drawings
FIG. 1 is a schematic diagram of a tail gas treatment system for a process with a heat value according to the present utility model.
In the figure, a 1-flameless constant temperature direct combustion device 2-VOCs industrial tail gas nozzle 3-combustion air nozzle 4-fuel gas nozzle 5-VOCs industrial tail gas preheater 6-combustion air preheater 7-waste heat boiler 8-blower 9-induced draft fan 10-chimney
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the technical scheme of the present utility model will be further described in detail with reference to the accompanying drawings and the detailed description.
Examples
As shown in fig. 1, the VOCs industrial tail gas treatment system comprises a combustion device, a heat exchange device, a heat recovery device and a combustion air conveying device, wherein the heat exchange device comprises a combustion air preheater 6 and a VOCs industrial tail gas preheater 5, the combustion device is a flameless constant temperature direct combustion device 1, the heat recovery device is a waste heat boiler 7, and the combustion air conveying device comprises a draught fan 9 and a blower 8, wherein:
the hot end inlet of the VOCs industrial tail gas preheater 5 is connected with a smoke outlet at one end of the flameless constant temperature direct combustion device 1, the hot end smoke outlet of the VOCs industrial tail gas preheater 5 is connected with a hot end inlet of the combustion air preheater 6, the heat recovery device comprises a waste heat boiler 7, the hot end smoke outlet of the combustion air preheater 6 is connected with a hot end inlet of the waste heat boiler 7, the hot end outlet of the waste heat boiler 7 is connected with an inlet of a draught fan 9, and the outlet of the draught fan 9 is connected with a chimney 10. The cold end outlet of the VOCs industrial tail gas preheater 5 is connected with the inlet of the VOCs industrial tail gas nozzle 2 of the flameless constant temperature direct combustion device 1, the combustion air nozzle 3 is arranged on the flameless constant temperature direct combustion device 1, the fuel gas nozzle 4 is arranged on the flameless constant temperature direct combustion device 1, and the cold end outlet of the combustion air preheater 6 is connected with the inlet of the combustion air nozzle 3 arranged on the flameless constant temperature direct combustion device 1; a blower 8 is connected to the cold end inlet of the combustion air preheater 6. The inlet of a fuel gas nozzle 4 arranged on the flameless constant temperature direct combustion device 1 is connected with a fuel gas main pipeline; the inlet of the cold section of the VOCs industrial tail gas preheater 5 is connected with a VOCs industrial tail gas main pipeline.
The inner wall of the flameless constant temperature direct combustion device 1 is lined by adopting a heat insulating material, a plurality of combustion air nozzles 3, VOCs industrial tail gas nozzles 2 and fuel gas nozzles 4 are arranged in the flameless constant temperature direct combustion device 1, the combustion air nozzles 3 are connected with a cold end outlet of a combustion air preheater 6 through combustion air pipes, the VOCs industrial tail gas nozzles 2 are connected with a cold end outlet of the VOCs industrial tail gas preheater 5 through VOCs industrial tail gas pipes, and the fuel gas nozzles 4 are connected with a fuel gas supply device through fuel gas pipelines; in the use process, the flue gas is connected with a cold end input pipe of the VOCs industrial tail gas preheater 5. The air distribution shape of the flameless constant temperature direct combustion device 1 is variable, the fuel gas nozzle 4, the VOCs industrial tail gas nozzle 2 and the combustion air nozzle 3 are tightly surrounded and uniformly distributed, an expansion joint is arranged on an inlet pipeline of the VOCs industrial tail gas nozzle 2, an electric valve is arranged on an inlet pipeline of the combustion air nozzle 3, and all the nozzles are inserted nozzles; two sets of pressure gauges and electric valves are arranged on the inlet pipeline of the fuel gas nozzle 4, and meanwhile, the inlet pipeline of the fuel gas nozzle 4 can be switched into the combustion air pipeline. A plurality of temperature sensors are arranged in the nozzle opening and the combustion chamber of the flameless constant temperature direct combustion device 1.
Through above-mentioned VOCs industrial tail gas processing system, in the course of the work, VOCs industrial tail gas gets into VOCs industrial tail gas preheater 5 and flameless constant temperature direct-fired burner 1, and the flue gas passes through heat transfer, will rise the temperature around 500 ℃, gets into flameless constant temperature direct-fired burner 1 through VOCs industrial tail gas nozzle 2. After the pressure of the combustion air is increased by the blower 8, the temperature of the combustion air is increased to about 500 ℃ by heat exchange of the combustion air preheater 6, and the combustion air enters the flameless constant temperature direct combustion device 1 through the combustion air nozzle 3. The temperature of the flameless constant-temperature direct-fired combustion device 1 can be ensured to be about 750-1350 ℃, and under the flameless condition, the full combustion of substances in the smoke can be ensured, and the generation of NOx can be stopped. The burnt flue gas sequentially enters the VOCs industrial tail gas preheater 5 and the combustion air preheater 6 from a flue gas outlet at the top of the flameless constant-temperature direct-combustion device 1, enters a hot end flue gas inlet of the waste heat boiler 7, and is used for recycling heat, so that the heat recycling is realized, and the tail gas reaching the standard is sent to a chimney 10 through a draught fan 9 to be discharged. In the case of starting, the main fuel gas line supplies fuel gas to the flameless constant temperature direct combustion device 1 via the fuel gas nozzle 4.
The foregoing detailed description of the treatment system for VOCs industrial tail gas, with reference to specific embodiments, is illustrative and not restrictive, and several examples may be presented in the context of the present utility model, and therefore, variations and modifications may be resorted to without departing from the general inventive concept.
Claims (5)
1. The utility model provides a VOCs industrial exhaust gas treatment system, includes burner, heat transfer device, heat recovery device and combustion air conveyor, its characterized in that: the heat exchange device comprises a combustion air preheater (6), VOCs and an industrial tail gas preheater (5), the combustion device is a flameless constant-temperature direct-fired combustion device (1), the heat recovery device is a waste heat boiler (7), and the combustion air conveying device comprises an induced draft fan (9) and a blower (8), wherein: the hot end inlet of the VOCs industrial tail gas preheater (5) is connected with a smoke outlet at one end of the flameless constant-temperature direct-fired combustion device (1), a hot end smoke outlet of the VOCs industrial tail gas preheater (5) is connected with a hot end inlet of the combustion air preheater (6), a hot end smoke outlet of the combustion air preheater (6) is connected with a hot end inlet of the waste heat boiler (7), a hot end outlet of the waste heat boiler (7) is connected with an inlet of the induced draft fan (9), and an outlet of the induced draft fan (9) is connected with a chimney (10); the cold end outlet of the VOCs industrial tail gas preheater (5) is connected with the inlet of the flameless constant temperature direct combustion device (1), and the cold end outlet of the combustion air preheater (6) is connected with the combustion air inlet of the flameless constant temperature direct combustion device (1); the blower (8) is connected with a cold end inlet of the combustion air preheater (6); the fuel gas inlet section of the flameless constant-temperature direct-combustion device (1) is connected with a fuel gas main pipeline; and the inlet of the cold section of the VOCs industrial tail gas preheater (5) is connected with a main pipeline of the VOCs industrial tail gas.
2. The VOCs industrial exhaust gas treatment system according to claim 1, wherein: the flameless constant-temperature direct-fired combustion device (1) is provided with a VOCs industrial tail gas nozzle (2), and the VOCs industrial tail gas nozzle (2) is connected with a cold end outlet of the VOCs industrial tail gas preheater (5).
3. The VOCs industrial exhaust gas treatment system according to claim 1, wherein: the flameless constant-temperature direct-combustion device (1) is provided with a combustion air nozzle (3), and the combustion air nozzle (3) is connected with a cold end outlet of the combustion air preheater (6).
4. The VOCs industrial exhaust gas treatment system according to claim 1, wherein: the flameless constant temperature direct combustion device (1) is provided with a fuel gas nozzle (4), and the fuel gas nozzle (4) is connected with a fuel gas supply device through a fuel gas pipeline.
5. The VOCs industrial exhaust gas treatment system according to claim 4, wherein: the inlet line of the fuel gas nozzle (4) can be switched from the fuel gas pipeline to the combustion air pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466629.6U CN219933999U (en) | 2023-06-09 | 2023-06-09 | VOCs industrial tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466629.6U CN219933999U (en) | 2023-06-09 | 2023-06-09 | VOCs industrial tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933999U true CN219933999U (en) | 2023-10-31 |
Family
ID=88488155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321466629.6U Active CN219933999U (en) | 2023-06-09 | 2023-06-09 | VOCs industrial tail gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933999U (en) |
-
2023
- 2023-06-09 CN CN202321466629.6U patent/CN219933999U/en active Active
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