CN214133233U - Petrochemical enterprise contains hydrocarbon waste gas preprocessing device - Google Patents
Petrochemical enterprise contains hydrocarbon waste gas preprocessing device Download PDFInfo
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- CN214133233U CN214133233U CN202022518545.5U CN202022518545U CN214133233U CN 214133233 U CN214133233 U CN 214133233U CN 202022518545 U CN202022518545 U CN 202022518545U CN 214133233 U CN214133233 U CN 214133233U
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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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The utility model provides a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, throw feeder apparatus, adsorbent blender and biochemical pond, its characterized in that including containing hydrocarbon waste gas collector, draught fan, mechanical deoiling device, activated sludge adsorption washing device, adsorbent: the hydrocarbon-containing waste gas collector is connected with an inlet of the induced draft fan, an outlet of the induced draft fan is connected with the mechanical oil removal device, a hydrocarbon-containing waste gas outlet of the mechanical oil removal device is connected with the activated sludge adsorption washing device, a hydrocarbon-containing waste gas outlet of the activated sludge adsorption washing device and an adsorbent outlet of the adsorbent adding device are connected to the adsorbent mixer, an outlet of the adsorbent mixer is connected with the biochemical pool, and the adsorbent washing device is arranged in the biochemical pool. The utility model discloses effectively solved among the prior art petrochemical enterprise high concentration hydrocarbon-containing exhaust-gas treatment discharge to reach standard and required height, processing apparatus moves technical problem such as complicacy, security performance is poor, running cost height.
Description
Technical Field
The utility model relates to a preprocessing device of hydrocarbon-containing waste gas, in particular to a preprocessing device of hydrocarbon-containing waste gas of petrochemical enterprises.
Background
The sewage treatment plant is an important supporting facility for petrochemical enterprises and is also a main atmospheric pollutant emission source. Wherein, in the systems of a sewage treatment field regulation homogenizing tank, an oil separation tank, a flotation tank, a biological aeration tank, a sump oil tank, a sludge concentration tank, an oil-containing sludge oil removal facility and the like, the emitted pollutants mainly comprise volatile hydrocarbon substances, and the hydrocarbon concentration reaches thousands or even tens of thousands of mg/m3And also small amounts of sulfides, ammonia, and the like; the waste gas has the characteristics of complex composition, high pollutant concentration, large smell and toxicity and the like. Along with the stricter environmental protection requirements in recent years, the standards of GB 31570-2015, GB 31571-2015 and the like issued by the ministry of ecological environment stipulate special emission limits (not more than 120 mg/m) for the organic waste gas collecting and treating device for wastewater treatment3) Thereby treating sewage of petrochemical enterprisesThe treatment of hydrocarbon-containing waste gas in the treatment field has raised higher requirements.
At present, the hydrocarbon-containing waste gas treatment method of petrochemical enterprises mainly comprises a catalytic combustion method, a biological method and an adsorption method. The catalytic combustion process requires high concentration and stable content of hydrocarbon substances in the intake air, and the catalyst for catalytic combustion is easy to be poisoned by sulfur in the hydrocarbon-containing exhaust gas. The biological method is suitable for treating the hydrocarbon-containing waste gas with no recycling value, low concentration and good biodegradability, the biological method cannot realize standard emission of the high-concentration hydrocarbon-containing waste gas, and the biological method is impacted due to overhigh concentration of the gas hydrocarbon. When the adsorbent such as activated carbon is used for directly adsorbing the high-concentration hydrocarbon-containing waste gas, large-particle dirty oil in the hydrocarbon-containing waste gas is blocked on the surface of the adsorbent, the adsorption effect of the microporous surface inside the adsorbent particles cannot be exerted, and the adsorbent is quickly adsorbed and saturated by the high-concentration hydrocarbon-containing waste gas, so that the operation cost is increased.
Chinese patent CN201721335165.X discloses a pretreatment device for hydrocarbon-containing waste gas in a sewage treatment plant, wherein the hydrocarbon-containing waste gas is deoiled, then is mixed with an added adsorbent, enters an adsorption washing device in a biochemical pool, is mixed with the biochemical waste gas after being washed, and is sent to a deodorization device. This patent has got rid of the great granule sump oil in the hydrocarbon waste gas through deoiling processing, has prevented that large granule sump oil from blockking up on the adsorbent surface, but the hydrocarbon concentration of waste gas is still higher when mixing with the adsorbent, and hydrocarbon material has the probability to block up on adsorbent particle surface, can't give full play to the adsorption on the inside micropore surface of adsorbent, and the input volume of adsorbent is big moreover, and the working costs is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a petrochemical enterprise contains hydrocarbon waste gas preprocessing device for it is high to solve among the prior art petrochemical enterprise high concentration containing hydrocarbon waste gas treatment discharge to reach standard and requires, and processing apparatus moves technical problem such as complicacy, security performance is poor, running cost height.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, includes that hydrocarbon waste gas collector, draught fan, machinery deoiling device, activated sludge adsorb washing device, adsorbent throw with device, adsorbent blender and biochemical pond, its characterized in that: the hydrocarbon-containing waste gas collector is connected with an inlet of the induced draft fan, an outlet of the induced draft fan is connected with the mechanical oil removal device, a hydrocarbon-containing waste gas outlet of the mechanical oil removal device is connected with the activated sludge adsorption washing device, a hydrocarbon-containing waste gas outlet of the activated sludge adsorption washing device and an adsorbent outlet of the adsorbent adding device are connected to the adsorbent mixer, an outlet of the adsorbent mixer is connected with the biochemical pool, and the adsorbent washing device is arranged in the biochemical pool;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the mechanical oil removing device is a rotary mechanical oil removing device, and the lower end of the rotary mechanical oil removing device is connected with a sump oil collector;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the adsorption washing agent of the activated sludge adsorption washing device is activated sludge returned from a secondary sedimentation tank of a sewage treatment plant;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the bottom end of the activated sludge adsorption washing device is connected with a sludge pump, and activated sludge after adsorption washing of hydrocarbon-containing waste gas is lifted by the sludge pump and flows back to the biochemical tank;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the activated sludge adsorption washing device adopts a top-down spraying mode;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the activated sludge adsorption washing device adopts a spraying mode from bottom to top;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the adsorbent of the adsorbent feeding device is one of activated carbon, molecular sieve, silica gel, alumina and natural clay;
the utility model relates to a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, its further characterized in that: the bottom of the biochemical tank is communicated with a blast pipeline, and the upper part of the biochemical tank is communicated with a biological deodorization device;
compared with the prior art, the utility model discloses following beneficial effect has:
1. the large-particle dirty oil in the high-concentration hydrocarbon-containing waste gas can be separated and recovered through mechanical oil removal, so that the load of a subsequent treatment device is reduced while the resource utilization of waste is realized;
2. the activated sludge adsorption washing step fully utilizes the adsorption performance of the return sludge of the secondary sedimentation tank to carry out adsorption washing, and hydrocarbon substances obtained by adsorption washing are thoroughly treated after the activated sludge and microorganisms in the biochemical tank are biodegraded;
3. the adsorbent adding process is positioned after the mechanical oil removal and activated sludge adsorption washing process, large-particle dirty oil and partial hydrocarbon substances in the hydrocarbon-containing waste gas are removed, the probability of blocking the surfaces of the hydrocarbon substances on the surfaces of adsorbent particles is reduced, the adsorption effect on the surfaces of micropores in the adsorbent can be fully exerted, the residual hydrocarbon substances in the hydrocarbon-containing waste gas are further adsorbed and separated, and the adsorption capacity of the adsorbent is fully exerted;
4. the adsorbent is washed by the adsorbent washing device and then enters the biochemical pool, hydrocarbon substances on the surface of the adsorbent are biodegraded, meanwhile, the adsorbent can further adsorb refractory substances in the sewage and can be used as a flocculating nucleus to improve the separation and precipitation effect of sludge in subsequent effluent and improve the effluent quality and treatment effect of the sewage;
in conclusion, compared with the existing catalytic combustion method, biological method and adsorption method for treating the hydrocarbon-containing waste gas, the technical scheme utilizes the activated sludge resource of the secondary sedimentation tank of the sewage treatment plant, effectively pretreats the high-concentration hydrocarbon-containing waste gas in the petrochemical industry, so that the high-concentration hydrocarbon-containing waste gas meets the requirement of entering a biochemical waste gas treatment system, simultaneously can recover dirty oil in the hydrocarbon-containing waste gas, realizes the recycling of resources, and has the characteristics of safe and reliable operation, simple management, investment saving and the like.
Drawings
Fig. 1 is a schematic flow chart of a hydrocarbon-containing waste gas pretreatment device of a petrochemical enterprise.
Fig. 2 is another schematic flow diagram of the hydrocarbon-containing waste gas pretreatment device of the petrochemical enterprise.
In the figure: 1. the system comprises hydrocarbon-containing waste gas, a hydrocarbon-containing waste gas collector, a draught fan, a mechanical oil removal device, a dirty oil collection pipeline, a dirty oil collector, a backflow activated sludge, an activated sludge adsorption and washing device, a sludge pump, a biochemical tank, an adsorbent feeding device, an adsorbent mixer, an adsorbent washing device, a biological deodorization device and a blowing pipeline, wherein the hydrocarbon-containing waste gas comprises 2 hydrocarbon-containing waste gas, 3 an induced draught fan, 4 mechanical oil removal devices, 5 dirty oil collection pipelines, 6 dirty oil collectors, 7 backflow activated sludge, 8 activated sludge adsorption and washing devices, 9 sludge pumps, 10 biochemical tanks, 11 adsorbent feeding devices, 12 adsorbent mixers, 13 adsorbent washing devices, 14 biological deodorization devices and 15 blowing pipelines.
Detailed Description
The technical content and effect of the present invention will be further explained with reference to the drawings and the embodiments.
Example 1
A hydrocarbon-containing waste gas pretreatment device for petrochemical enterprises is used for treating waste gas with the hydrocarbon concentration of 2% or more generated in the production processes of a petrochemical sewage treatment plant adjusting tank, an oil separation tank, an air floatation tank, a dirty oil tank, an oil sludge tank, an oil-containing sludge treatment facility and the like. The device comprises a hydrocarbon-containing waste gas collector 2, an induced draft fan 3, a mechanical oil removal device 4, an activated sludge adsorption washing device 8, an adsorbent adding device 11, an adsorbent mixer 12 and a biochemical pool 10. The hydrocarbon-containing waste gas 1 is collected and then sent into a rotary mechanical oil removal device 4 through a draught fan 3, and the removed sump oil enters a sump oil collector 6 through a sump oil collecting pipeline 5 for resource utilization; the hydrocarbon-containing waste gas after mechanical oil removal enters from the bottom of the activated sludge adsorption washing device 8 and contacts with activated sludge sprayed from top to bottom, the activated sludge fully adsorbs hydrocarbon substances in the hydrocarbon-containing waste gas, and the sprayed sludge flows back to the biochemical tank 10 through the pump 9; the hydrocarbon-containing waste gas after adsorption and washing by activated sludge and the adsorbent in the adsorbent feeding device 11 are mixed and adsorbed in the adsorbent mixer 12 and then enter the adsorbent washing device 13 in the biochemical tank 10, the washed adsorbent enters the biochemical tank 10, and the adsorbent is activated carbon; the activated sludge and the hydrocarbon substances adsorbed by the activated carbon are decomposed in the biochemical pool 10 by the biodegradation of microorganisms; the hydrocarbon-containing waste gas washed by the adsorbent washing device 13 is mixed with biochemical waste gas in a biochemical pool and then enters the biological deodorization device 14 of the sewage treatment plant for standard treatment.
Example 2
A hydrocarbon-containing waste gas pretreatment device for petrochemical enterprises is used for treating waste gas with the hydrocarbon concentration of 2% or more generated in the production processes of a petrochemical sewage treatment plant adjusting tank, an oil separation tank, an air floatation tank, a dirty oil tank, an oil sludge tank, an oil-containing sludge treatment facility and the like. The device comprises a hydrocarbon-containing waste gas collector 2, an induced draft fan 3, a mechanical oil removal device 4, an activated sludge adsorption washing device 8, an adsorbent adding device 11, an adsorbent mixer 12 and a biochemical pool 10. The hydrocarbon-containing waste gas 1 is collected and then sent into a rotary mechanical oil removal device 4 through a draught fan 3, and the removed sump oil enters a sump oil collector 6 through a sump oil collecting pipeline 5 for resource utilization; the hydrocarbon-containing waste gas after mechanical oil removal enters from the top of the activated sludge adsorption washing device 8 and contacts with activated sludge sprayed from bottom to top, the activated sludge fully adsorbs hydrocarbon substances in the hydrocarbon-containing waste gas, and the sprayed sludge flows back to the biochemical tank 10 through the pump 9; the hydrocarbon-containing waste gas after adsorption and washing by the activated sludge and the adsorbent in the adsorbent feeding device 11 are mixed and adsorbed in the adsorbent mixer 12 and then enter the adsorbent washing device 13 in the biochemical tank 10, the washed adsorbent enters the biochemical tank 10, and the adsorbent is a molecular sieve; the activated sludge and the hydrocarbon substances adsorbed by the molecular sieve are decomposed in the biochemical pool 10 by the biodegradation of microorganisms; the hydrocarbon-containing waste gas washed by the adsorbent washing device 13 is mixed with biochemical waste gas in a biochemical pool and then enters the biological deodorization device 14 of the sewage treatment plant for standard treatment.
The above are only exemplary embodiments of the present invention, and those skilled in the art can make appropriate modifications and improvements on the basis of the above embodiments, but the embodiments are substantially the same as the present invention and also fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a petrochemical enterprise contains hydrocarbon waste gas preprocessing device, includes that hydrocarbon waste gas collector, draught fan, machinery deoiling device, activated sludge adsorb washing device, adsorbent throw with device, adsorbent blender and biochemical pond, its characterized in that: the hydrocarbon-containing waste gas collector is connected with an inlet of the induced draft fan, an outlet of the induced draft fan is connected with the mechanical oil removal device, a hydrocarbon-containing waste gas outlet of the mechanical oil removal device is connected with the activated sludge adsorption washing device, a hydrocarbon-containing waste gas outlet of the activated sludge adsorption washing device and an adsorbent outlet of the adsorbent adding device are connected to the adsorbent mixer, an outlet of the adsorbent mixer is connected with the biochemical pool, and the adsorbent washing device is arranged in the biochemical pool.
2. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 1, characterized in that: the mechanical oil removing device is a rotary mechanical oil removing device, and the lower end of the mechanical oil removing device is connected with a sump oil collector.
3. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 1, characterized in that: the adsorption washing agent of the activated sludge adsorption washing device is activated sludge returned from a secondary sedimentation tank of a sewage treatment plant.
4. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 1, characterized in that: the bottom end of the activated sludge adsorption washing device is connected with a sludge pump, and activated sludge after adsorption washing of hydrocarbon-containing waste gas is lifted by the sludge pump and flows back to the biochemical tank.
5. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 4, wherein: the activated sludge adsorption washing device adopts a spraying mode from top to bottom.
6. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 4, wherein: the activated sludge adsorption washing device adopts a spraying mode from bottom to top.
7. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 1, characterized in that: the adsorbent is one of activated carbon, molecular sieve, silica gel, alumina and natural clay.
8. The hydrocarbon-containing waste gas pretreatment device of petrochemical enterprises according to claim 1, characterized in that: the bottom of the biochemical pool is communicated with a blast pipeline, and the upper part of the biochemical pool is communicated with a biological deodorization device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022518545.5U CN214133233U (en) | 2020-11-04 | 2020-11-04 | Petrochemical enterprise contains hydrocarbon waste gas preprocessing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022518545.5U CN214133233U (en) | 2020-11-04 | 2020-11-04 | Petrochemical enterprise contains hydrocarbon waste gas preprocessing device |
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| CN214133233U true CN214133233U (en) | 2021-09-07 |
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| CN202022518545.5U Active CN214133233U (en) | 2020-11-04 | 2020-11-04 | Petrochemical enterprise contains hydrocarbon waste gas preprocessing device |
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