CN202336287U - Integrated treatment system of organic waste gases of refining company - Google Patents
Integrated treatment system of organic waste gases of refining company Download PDFInfo
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- CN202336287U CN202336287U CN2011204421815U CN201120442181U CN202336287U CN 202336287 U CN202336287 U CN 202336287U CN 2011204421815 U CN2011204421815 U CN 2011204421815U CN 201120442181 U CN201120442181 U CN 201120442181U CN 202336287 U CN202336287 U CN 202336287U
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Abstract
The utility model relates to an integrated treatment system of organic waste gases of a refining company. The integrated treatment system comprises a storage tank and a pipe network system, wherein the storage tank comprises at least two of an acid water tank, a slop tank, an oil product intermediate tank, a chemical product tank, a chemical intermediate product tank, a crude oil tank and a finished oil tank; and the pipe network system, namely, a third pipe network, comprises branch pipelines connected with the storage tank and an integrated pipeline connected with the branch pipelines, and valves are arranged on the branch pipelines. Compared with the prior art, the integrated treatment system is used for integrating the organic waste gases from different sources, and is beneficial to centralized treatment, so that treatment load is reduced, and equipment investment and waste gas treatment operation cost are lowered.
Description
Technical field
The utility model relates to a kind of Petrochemical Enterprises process units and the integrated governing system of storage tank tail gas, particularly manages concentratedly and treatment system from the organic exhaust gas of multiple device and different tank fields.
Background technology
In oil refining, chemical enterprise, the organic exhaust gas that many device emission components are comparatively complicated is produced tail gas like oxidation sweetening of light-end products alcohol device, polymer (like polyester) production process discharging waste gas, and oxidizing process is produced para-phthalic acid (pta) tail gas etc.Various storage tanks also can give off the waste gas that contains the machine component when normal the use, like acid water pot, slop tank, product pans, petroleum tank, product tank, chemical products jar etc.Above-mentioned these waste gas components are complicated, generally adopt the waste gas in a certain source to carry out independent recovery or purified treatment.
Existing organic exhaust gas improvement method has several types of firing method, condensation method, bioanalysis, absorption method, chemical absorption method and combination methods etc.Concrete which kind of treatment technology of selecting can be taken all factors into consideration according to gas source, pollutant composition, concentration, tolerance, processing requirements, operation, security and technological adaptability.
Firing method can be handled various odorant pollutants, and oxidation deodorizing is thorough.This method can be divided into three types of direct burning, flame combustion method and catalytic combustions.Directly burning is applicable to high-concentration organic waste gas.The flame combustion method usually need be with foul smell and fuel mix, and ignition temperature is generally at 600～800 ℃, and stench and total hydrocarbon clearance are near 100%.Shortcoming is to need to consider the blast bound, and fuel consumption is big, has by the substituted trend of catalytic combustion.Some refinery also utilizes the torch foul gas that directly burns usually.Catalytic combustion is under catalyst action, and organic pollution can be burnt under 200～300 ℃ of temperature, and stench and total hydrocarbon clearance can reach 99%.This method is simple to operate, efficient is high, has become a kind of important deodorization means, generally is suitable for handling low-concentration organic exhaust gas.High for hydrocarbon content, sulfide concentration big and be in the tank deck foul gas in inflammable and explosive zone, the measure of considered prevention catalyst poisoning, explosion precaution and economy.
Condensation method and freezing generally are used to reclaim higher lighter hydrocarbons of boiling point or odorant pollutant.This method is usually united use with other method, as the condensation+adsorption technology of employing is arranged in the oil gas recovery; Condensation+oxidation+adsorption technology that the chemical enterprise treatment of high concentration adopts when containing methyl disulfide (103 ℃ of boiling points), methyl mercaptan (6 ℃), methyl sulfide waste gas such as (37 ℃); To methyl disulfide, methyl sulfide condensing and recycling, the pollutant in the tail gas is further removed through oxidation and absorption.
Biological deodorization method utilizes attached to the microorganism metabolic processes on the filler, and pollutant is decomposed into CO
2, water, NO
3 -And SO
4 2-Etc. innoxious compound, have characteristics such as technology is simple, with low cost, be the technology of people's common concern.The prior biological technology is suitable for handling that source of the gas is stable, water miscible, biodegradable low concentration gas, is difficult to that processing hydrocarbons content is high, pollutant levels are high, the foul gas of complicated component.
Absorption method is utilized the intrapore surface area of adsorbent absorption odorant, be a kind of traditional, still be in the deodorization technology of developing stage.Deodorization adsorbent commonly used has active carbon, amphoteric ion-exchange resin, activated alumina, silica gel, atlapulgite etc.Wherein, active carbon has higher voidage and specific area, can effectively adsorb boiling point and be higher than 40 ℃ malodor components.Because the adsorption capacity of absorption method is lower; And no matter saturated adsorbent is that landfill or regeneration all produce secondary pollution; The replacing of adsorbent is trouble comparatively also, so absorption method generally is used to handle the foul gas of low concentration, or as the vent gas treatment of other method.
The adsorption and oxidation method is one of developing direction of absorption method.This method is a carrier with granular active carbon or fiber-reactive charcoal etc., through flooding alkali, having the noble metal of catalytic or the additives such as composite metal oxide of iron content, processes adsorption oxidation sweetening agent, is used to remove odorants such as hydrogen sulfide and organic sulfur.Deodorizing mechanism is that water vapour exists down H
2Odorant such as S, mercaptan and alkali reaction also are adsorbed on the desulfurizing agent, and oxygen reaction generates elemental sulfur, disulphide etc. under the metal catalytic effect and in the waste gas then.This method is used in a plurality of fields such as tank deck foul gas processing.The problem that exists is that the adsorption reaction thermal discharge is big, when vulcanizing object height especially heat release violent, the influence safety in production; When steam and hydrocarbon content are high, be prone to the parcel desulfurizing agent, cause the desulfurizing agent effect to descend and lost efficacy; To form ferrous sulfide after the low or desulfurizing agent of air capacity is saturated, and because of the ferrous sulfide spontaneous combustion, have hidden peril of explosion, similarly explosion accident had taken place in some enterprise.
Absorption process can be divided into Physical Absorption method and chemical absorption method.The Physical Absorption method mainly is to be absorbent with water or diesel oil, removes water-soluble foul gas (as removing NH
3Or sulfide), but it is not up to standard to handle back gas, and employing can be used as preprocessing means seldom separately.Chemical absorption method can be divided into alkali absorb method, sour absorption process, chemical oxidization method, air catalytic oxidation method, metal ion catalysis oxidizing process etc., is widely used, and particularly the oxidizing process development is rapid, and selectable technological kind is many.
Though the said method majority can be handled organic exhaust gas to a certain extent, the waste gas in a plurality of sources is handled respectively, has problems such as equipment investment height and running cost height.
Summary of the invention
To the deficiency of prior art, the utility model provides a kind of Petrochemical Enterprises organic exhaust gas integrated system, and the 3rd pipe network is set; Carry out the organic exhaust gas of separate sources integrated; Help focusing on, reduce and handle load, reduce equipment investment and exhaust-gas treatment operating cost.
The integrated governing system of the utility model Petrochemical Enterprises organic exhaust gas comprises storage tank and pipe network system; Storage tank comprises at least two kinds in acid water pot, slop tank, oil product pans, chemical products jar, chemical industry intermediate products jar, petroleum tank, the product tank; Pipe network system i.e. the 3rd pipe network comprises and branch line that connects storage tank and the concentrated pipeline that links to each other with each branch line valve is set on branch line.
In the utility model; The pipe network system that is provided with is called the 3rd pipe network, in Petrochemical Enterprises, is provided with " high pressure gas pipe network " and " low pressure gas pipe network " at present; The pipe network system of the utility model setting is different from the above-mentioned combustible gas pipe network that existed, and therefore is called the 3rd pipe network.
In the utility model, produce the process units of organic exhaust gas, exhaust extractor is incorporated the 3rd pipe network into through branch line, like gas and oil air sweetening device etc.
In the utility model, oil product shipment, entrucking exhaust outlet are incorporated the 3rd pipe network into through branch line.
In the utility model, commercial plant shut-down (breakdown) mainteance emission gases is incorporated the 3rd pipe network into through branch line is set.
In the utility model, the valve that is provided with on the branch line of acid water pot and slop tank setting is straight-through stop valve.
In the utility model, the valve that is provided with on the branch line of oil product pans, chemical products jar, chemical industry intermediate products jar, petroleum tank and product tank setting is the check valve of unidirectional outflow.
In the utility model, the gauge pressure of the 3rd pipe network should be generally 500～2000Pa more than 500Pa, can the oxytropism water pot and reflux during the slop tank negative pressure storage tank is carried out the gas transmission protection.
In the utility model, the 3rd pipe network can be provided with a cover, if scope of the enterprise is bigger, two covers also can be set or overlaps the 3rd pipe network system more.
In the utility model, the oxygen content of controlling gas in the 3rd pipe network system is less than 6% (volume).Nitrogen is set makes up line, when the oxygen content of gas in the 3rd pipe network system surpasses 6%, replenish nitrogen.
In the utility model, the buffering gas holder is set, the buffering gas holder is connected with the concentrated pipeline of the 3rd pipe network.The buffering gas holder is selected two film gas holders for use, and the skin of gas holder is a metal shell, and inner bag is a flexible material.Within the specific limits, when tolerance increased in the pipe network, it is big that the inner bag expanding volume becomes; Tolerance reduces in the pipe network, and inner bag shrinks.
In the utility model, the concentrated pipeline of the 3rd pipe network is connected with the organic gas treating apparatus, and the organic gas treating apparatus is preferably " low temperature diesel oil absorption-absorption desulfurization-air oxidation " device.
The utility model Petrochemical Enterprises organic exhaust gas integrated system adopts the 3rd pipe network that organic exhaust gas is carried out integrated collection and treatment; Equipment investment is high when having avoided different source of the gas individual processing; The high deficiency of operating cost; Simultaneously can reduce the exhaust-gas treatment amount, reduce the protective gas consumption, effectively reduce the regular job expense.
Description of drawings
Fig. 1 is that the utility model constitutes sketch map.
Wherein: 1-gasoline oxidation sweetening unit, 2-acid water storage tank, 3-gasoline product storage tank, 4-the 3rd pipe network branch line, 5-the 3rd pipe network is concentrated pipeline, and 6-cushions gas holder, 7-organic waste gas treatment device.
The specific embodiment
As shown in Figure 1; The utility model is with gasoline oxidation sweetening unit 1; Acid water storage tank 2; Gasoline product storage tank 3 grades produce the commercial plant and the storage tank of organic exhaust gas and concentrate pipeline 5 to be communicated with through the 3rd pipe network branch line 4 and the 3rd pipe network, behind the waste gas process buffering gas holder of concentrating 6, further carry out purified treatment through organic waste gas treatment device 7.
The utility model system in use, concrete key point is following:
1, source exhaust gas comprises the acid water pot of refinery factory, slop tank, oil product pans, crude oil and product tank, oxidation sweetening tail gas, oil product shipment and entrucking discharging oil gas, shut-down (breakdown) mainteance emission gases etc., contains oxygen, nitrogen, volatile organic matter (VOCs), organic sulfur compound, H in the gas
2Pollutant such as S, ammonia.
2, in discharging gas such as acid water tank field, sump oil tank field, oil product intermediate tank farm, contain high concentration H
2Nitrogen or CO are adopted in the tank field of S, organic sulfur compound, oil gas
2, or inert gas such as flue as protective gas, prevent that the spontaneous combustion of storage tank generation ferrous sulfide from causing the oil gas explosion accident, by oxygen content in the tank field discharging gas less than 6% (V) control indifferent gas consumption.
3, to preferentially adopt the control of supplied materials temperature in tank fields such as acid water tank field, oil product intermediate tank farms; Acid water pH control; Supplied materials degassing tank (tank deck is communicated with the low pressure gas pipe network), control tank field input and output material flow equilibrium, the charging peak is arranged in measure minimizing tank field gas dischargings such as night.Charging condenser and vent condenser will be installed to reduce the vapour content in the discharging gas significantly in the sump oil tank field.
4, contain air, water vapour, hydrogen sulfide, ammonia, organic sulfur compound and oil gas in the gas of the 3rd pipe network.
5, the 3rd pipe network comprises that gas pipeline, pipeline are connected valve member, pressure and voltage-controlled element, blower fan, (elasticity) gas holder etc. with emission source.
6, no matter be floating roof tank or arch-roof tank, all will make closed processes, prevent the free loss pollutant atmosphere of head space gas tank deck.At tank deck, the setting pressure sensor is installed indifferent gas pipeline, Self controlling valve, installs and the exhaust line Self controlling valve.When the jar internal pressure of tank fields such as finished product gasoline, naphtha, diesel oil was lower than setting value, indifferent gas pipeline valves such as nitrogen were opened automatically, in jar, import inert gas, and the inert gas of input can contaminated product.When the jar internal pressure of similar tank fields such as acid water tank field, sump oil tank field, oil product intermediate tank farm was lower than setting value, tank deck discharge duct valve was opened automatically, and the gas in the 3rd pipe network relies on ductwork pressure to get in the jar; If a jar internal pressure further descends, the indifferent gas pipeline valve is opened automatically, topping up in jar.When jar internal pressures such as finished product oil tank or acid water pot were higher than setting value, the discharge duct valve was opened automatically.
7, the 3rd pipe network is connected with systems such as low pressure gas pipe networks through the gas purification purifying plant.Purify purifying plant and be meant adsorbent equipment or absorption plant, stripping gas advances to be lower than the gas pipe network through compressor; From security consideration, preferred dedicated solvent oil absorption plant, this device can be from the 3rd pipe network gas high efficiency extraction hydrocarbon compounds (including machine sulfide), and a certain proportion of hydrogen sulfide and ammonia.
8, the supporting installation of the 3rd pipe network " low temperature diesel oil absorption-absorption desulfurization-air oxidation " device.Lean absorption oil can be from normal two wires, catalytic cracking fractionating tower, and rich absorbent oil can remove hydrogenation plant, fractionating column etc.Absorbing desulfurizing agent can be sodium hydroxide solution, alkanolamine solution or FeOOH suspension.Use hydramine absorption liquid or the recyclable sulphur of amorphous FeOOH suspension.Gas after the desulfurization adopts catalytic combustion or heat-accumulation combustion to handle, and the Purge gas total hydrocarbon concentration is less than 100mg/m
3
9, the 3rd pipe network gas can be in the monitoring gas use that act as a fuel down.Through online detection; Combustible concentration is greater than UEL (generally at UEL more than 1.5 times) in the 3rd pipe network gas; And the combustible recovery value in the pipe network is not when high; Can be with the use that acts as a fuel of gas in the pipe network, the pipe flow speed that this gas gets into burner will to avoid tempering phenomenon much larger than its burning velocity.
10, set up the 3rd pipe network in Petrochemical Enterprises; The volume of pipe network pipeline will increase little respiration; Gas is carried to be brought together through long-distance pipe also needs bigger investment and gas transmitting power; Therefore, at a big on-site, can set up 2～4 cover " the 3rd pipe network " and supporting treating apparatus.
11, the 3rd pipe network gas ratio high and low pressure gas pipe network gas has more risk of explosion, and safety monitoring and prevention disposal system should be set.Main test item comprises oxygen concentration and VOC concentration in the gas, when oxygen concentration is higher than 6% (V), need import inert gases such as nitrogen to pipe network, or from the methane gas of gas pipe network.
12, to select for use absorption with diesel oil or distillate based on the optimization of full factory.For improving the absorbent properties that absorb oil, can on oil plant atmospheric distillation tower or catalytic cracking fractionating tower, increase side line and distillate mouth, guarantee that lower carbon number hydrocarbons is less in this cut, improve its absorbability to the 3rd pipe network gas.
Claims (14)
1. integrated governing system of Petrochemical Enterprises organic exhaust gas; It is characterized in that: the integrated governing system of Petrochemical Enterprises organic exhaust gas comprises storage tank and pipe network system; Storage tank comprises at least two kinds in acid water pot, slop tank, oil product pans, chemical products jar, chemical industry intermediate products jar, petroleum tank, the product tank; Pipe network system i.e. the 3rd pipe network comprises and branch line that connects storage tank and the concentrated pipeline that links to each other with each branch line valve is set on branch line.
2. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: produce the process units of organic exhaust gas, exhaust extractor is incorporated the 3rd pipe network into through branch line.
3. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 2, it is characterized in that: the process units that produces organic exhaust gas is a gas and oil air sweetening device.
4. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: oil product shipment and oil article vehicle exhaust outlet are incorporated the 3rd pipe network into through branch line.
5. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: commercial plant shut-down (breakdown) mainteance emission gases is incorporated the 3rd pipe network into through branch line is set.
6. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the valve that is provided with on the branch line of acid water pot and slop tank setting is straight-through stop valve.
7. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the valve that is provided with on the branch line of oil product pans, chemical products jar, chemical industry intermediate products jar, petroleum tank and product tank setting is the check valve of unidirectional outflow.
8. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the gauge pressure of the 3rd pipe network should be more than 500Pa.
9. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the 3rd pipe network is provided with two covers or many covers.
10. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the 3rd pipe network is provided with nitrogen and makes up line, and when the oxygen content of gas in the 3rd pipe network system surpasses 6%, replenishes nitrogen.
11. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the buffering gas holder is set, and the buffering gas holder is connected with the concentrated pipeline of the 3rd pipe network.
12. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 11, it is characterized in that: the buffering gas holder is selected two film gas holders for use, and the skin of gas holder is a metal shell, and inner bag is a flexible material.
13. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 1, it is characterized in that: the concentrated pipeline of the 3rd pipe network is connected with the organic gas treating apparatus.
14. according to the integrated governing system of the described Petrochemical Enterprises organic exhaust gas of claim 13, it is characterized in that: the organic gas treating apparatus is " low temperature diesel oil absorption-absorption desulfurization-air oxidation " device.
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| CN2011204421815U CN202336287U (en) | 2011-11-10 | 2011-11-10 | Integrated treatment system of organic waste gases of refining company |
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| CN103768914A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Treatment method of dissipative exhaust gas from acidic water storage tank |
| CN105546555A (en) * | 2016-02-17 | 2016-05-04 | 浙江赛铬能源有限公司 | System for recycling uncondensed gases of alkylation compressor |
| CN106362547A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | Sulfur-containing organic waste gas treatment method and sulfur-containing organic waste gas treatment apparatus |
| CN106362552A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | High concentration organic waste gas treatment method and high concentration organic waste gas treatment apparatus |
| CN106474878A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
| CN106474879A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
| CN108069155A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of storage tank discharging gas emission reduction and recovery system |
| CN108097000A (en) * | 2017-12-29 | 2018-06-01 | 河南龙成煤高效技术应用有限公司 | A kind of technique of coal chemical industry coal gas oil gas centralized recovery |
| CN106369615B (en) * | 2015-07-23 | 2018-07-06 | 中国石油化工股份有限公司 | The incineration treatment method and device of a kind of organic exhaust gas |
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| CN108800171A (en) * | 2018-06-27 | 2018-11-13 | 山东东尊华泰环保科技有限公司 | A kind of coke-oven plant VOCs burnings processing system |
| CN114939337A (en) * | 2022-04-11 | 2022-08-26 | 北京安星达环保技术发展有限公司 | Comprehensive treatment method for organic volatile matters of refining enterprises |
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2011
- 2011-11-10 CN CN2011204421815U patent/CN202336287U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103768914A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Treatment method of dissipative exhaust gas from acidic water storage tank |
| CN106362552B (en) * | 2015-07-23 | 2019-04-12 | 中国石油化工股份有限公司 | A kind of processing method and processing device of high-concentration organic waste gas |
| CN106362547B (en) * | 2015-07-23 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of processing method and processing device of sulfur-containing organic waste gas |
| CN106362547A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | Sulfur-containing organic waste gas treatment method and sulfur-containing organic waste gas treatment apparatus |
| CN106369615B (en) * | 2015-07-23 | 2018-07-06 | 中国石油化工股份有限公司 | The incineration treatment method and device of a kind of organic exhaust gas |
| CN106362552A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | High concentration organic waste gas treatment method and high concentration organic waste gas treatment apparatus |
| CN106474878A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
| CN106474879B (en) * | 2015-08-26 | 2023-09-29 | 中国石油化工股份有限公司 | Acrylonitrile tail gas centralized discharge system and acrylonitrile tail gas centralized discharge method |
| CN106474879A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
| CN106474878B (en) * | 2015-08-26 | 2024-03-26 | 中国石油化工股份有限公司 | Acrylonitrile tail gas centralized discharge system and acrylonitrile tail gas centralized discharge method |
| CN105546555A (en) * | 2016-02-17 | 2016-05-04 | 浙江赛铬能源有限公司 | System for recycling uncondensed gases of alkylation compressor |
| CN108069155A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of storage tank discharging gas emission reduction and recovery system |
| CN108097000A (en) * | 2017-12-29 | 2018-06-01 | 河南龙成煤高效技术应用有限公司 | A kind of technique of coal chemical industry coal gas oil gas centralized recovery |
| CN108097000B (en) * | 2017-12-29 | 2021-09-17 | 河南龙成煤高效技术应用有限公司 | Process for centralized recovery of coal gas and oil gas in coal chemical industry |
| CN108592054B (en) * | 2018-06-27 | 2020-11-27 | 山东东尊华泰环保科技有限公司 | VOCs processing system of coke-oven plant |
| CN108800171B (en) * | 2018-06-27 | 2020-11-27 | 山东东尊华泰环保科技有限公司 | VOCs combustion processing system of coke-oven plant |
| CN108800171A (en) * | 2018-06-27 | 2018-11-13 | 山东东尊华泰环保科技有限公司 | A kind of coke-oven plant VOCs burnings processing system |
| CN108592054A (en) * | 2018-06-27 | 2018-09-28 | 山东东尊华泰环保科技有限公司 | A kind of coke-oven plant VOCs processing systems |
| CN114939337A (en) * | 2022-04-11 | 2022-08-26 | 北京安星达环保技术发展有限公司 | Comprehensive treatment method for organic volatile matters of refining enterprises |
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Granted publication date: 20120718 |