CN108870420A - A kind of processing method of coal chemical industry enterprises volatile organic matter - Google Patents
A kind of processing method of coal chemical industry enterprises volatile organic matter Download PDFInfo
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- CN108870420A CN108870420A CN201810782219.XA CN201810782219A CN108870420A CN 108870420 A CN108870420 A CN 108870420A CN 201810782219 A CN201810782219 A CN 201810782219A CN 108870420 A CN108870420 A CN 108870420A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of processing methods of coal chemical industry enterprises volatile organic matter, belong to volatile organic matter and administer field.Processing method includes the following steps：The volatile organic matter of each emission point discharge during collection coal chemical industry, it pre-processes to reduce the concentration and hydrogen sulfide content of volatile organic matter, it is then sent to MTO/MTP regenerator or coking heater or sulphur incinerator burning processing, the regenerated flue gas after burning is passed through flue gas purification system to be dusted, desulfurization and denitration process.It is this method economy, efficient, safe, advanced, it can be effectively reduced the treatment cost of the volatile organic matter of enterprise.
Description
Technical field
The present invention relates to volatile organic matters to administer field, and in particular to a kind of coal chemical industry enterprises volatile is organic
The processing method of object.
Background technique
Recently as increasing, production-scale to be growing, the novel coalification of the newly-built coal chemical industry enterprises in the country
The volatile organic matter (VOCs) largely discharged during work has become one of enterprise's major pollutants discharged, current to this
Substantially administered using technologies such as absorption process, absorption method, incineration method and catalytic oxidations.
It is well known that VOCs higher for concentration of emission, absorption process is difficult to direct qualified discharge, generally as one kind
Preconditioning technique is applied；Absorption method generates dangerous waste, causes secondary pollution, while treated that VOCs is dense as absorption process
Degree be difficult to it is up to standard, usually can not direct emission.
Catalytic oxidation requires height to the sulfur content in VOCs, and catalyst activity component is noble metal, at high cost, and to place
The VOCs concentration of reason is restricted, general to require to be not more than 12000mg/Nm3。
It is a feasible technology that incineration method, which handles VOCs, but invests big, operating cost height.
The VOCs that coal chemical industry enterprises are discharged and the VOCs component that Petrochemical Enterprises are discharged are similar but not quite identical, VOCs
Emission source be also not quite similar.The VOCs that coal chemical industry process is discharged because production technology and due to the difference of purpose product its component and
Concentration difference is larger.In the composition of VOCs other than containing a large amount of methanol and dimethyl ether, other there are also a large amount of alkene, including
Ethylene, propylene, butylene, amylene etc., in addition there are also aromatic hydrocarbons (containing benzene,toluene,xylene, naphthalene, anthracene, quinone and the monocycles such as other or
Polycyclic or condensed-nuclei aromatics), C5 and alkane below etc..
It is used for the processing method higher cost of coal chemical industry enterprises VOCs in the prior art, ineffective, therefore, it is necessary to bases
The position of the characteristics of coal chemical industry difference machining process and each technique process units or main VOCs emission point and concentration, group
Point etc., determine that a general layout is reasonable, Technological Economy is feasible and has certain advanced scheme.
Summary of the invention
The purpose of the present invention is to provide a kind of processing method of coal chemical industry enterprises volatile organic matter, this method warps
Ji, efficient, safety, it is advanced, it can be effectively reduced the treatment cost of the volatile organic matter of enterprise.
The present invention solves its technical problem and adopts the following technical solutions to realize：
The present invention proposes a kind of processing method of coal chemical industry enterprises volatile organic matter, includes the following steps：Collect coal
The volatile organic matter of each emission point discharge, pre-processes to reduce the concentration and vulcanization of volatile organic matter in chemical process
Hydrogen content is then sent to MTO/MTP regenerator or coking heater or sulphur incinerator burning processing, the regeneration cigarette after burning
Gas is passed through flue gas purification system to be dusted, desulfurization and denitration process.
Optionally, in preferable embodiment, gathering line and storage device are in tiny structure shape during collection
State, vacuum degree control is in 0.01~20KPa during collection.
Optionally, in more preferably embodiment, vacuum degree control is in 0.2~2KPa during collection.
Optionally, in preferable embodiment, during collection, oxygen content is no more than in volatile organic matter
2v%.
Optionally, in more preferably embodiment, oxygen content is no more than 1v% in volatile organic matter.
Optionally, in preferable embodiment, oxygen content is adjusted by being passed through inert gas.
Optionally, in more preferably embodiment, oxygen content is adjusted by being passed through nitrogen.
Optionally, in preferable embodiment, preprocess method is diesel oil absorption+alkali cleaning processing or diesel oil absorption+alkali
Wash+molecular sieve adsorption treatment.
Optionally, in preferable embodiment, after pretreatment, the concentration of volatile organic matter is no more than 25000mg/
Nm3。
Optionally, in more preferably embodiment, the concentration of volatile organic matter is no more than 12000mg/Nm3。
The beneficial effect packet of the processing method for the coal chemical industry enterprises volatile organic matter that present pre-ferred embodiments provide
It includes：
(1) VOCS is collected and transportation system fully ensures that safe collection and the conveying of VOCs.In view of coal chemical industry enterprises are each
The explosion limit and oxygen content of contained hydrocarbon component in the VOCs of process units discharge, are contained by the concentration or oxygen that control VOCs
Amount is to ensure the safety in VOCs conveying and mixed process.
(2) it is operated under conditions of MTO/MTP regenerator or sulphur incinerator or coking heater etc. normally produce, it can be real
The efficient removal (> 98wt%) of existing VOCs and the high standard discharge (discharge standard that can reach incinerator) for realizing VOCs.
(3) VOCs of coal chemical industry enterprises difference emission source is utilized into network security centralized collection, then according to it with respect to position
It sets, the specific ingredient of VOCs and respective concentration etc., after suitable preconditioning technique, is introduced into therewith apart from relative close
MTO/MTP regenerator or the Existiing plants such as coking heater or sulphur incinerator carry out direct burning processing, realizing
While VOCs safety economy efficient process, qualified discharge, the VOCs treatment cost of enterprise is effectively reduced.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
The processing method of the coal chemical industry enterprises volatile organic matter of the embodiment of the present invention is specifically described below.
The processing method of coal chemical industry enterprises volatile organic matter provided by the present application includes the following steps：Collect coal chemical industry
The volatile organic matter (VOCs) of each emission point discharge in the process, pre-processes to reduce the concentration and sulphur of volatile organic matter
Change hydrogen content, is then sent to MTO/MTP regenerator or coking heater or sulphur incinerator etc. and carries out burning processing, after burning
Regenerated flue gas be passed through flue gas purification system to be dusted, desulfurization and denitration process.
Wherein, volatile organic matter not only includes a large amount of methanol and dimethyl ether, further includes a large amount of alkene, such as second
Alkene, propylene, butylene and amylene etc., in addition, further including aromatic hydrocarbons (such as benzene,toluene,xylene, naphthalene, anthracene, quinone and the monocycles such as other
Or polycyclic or condensed-nuclei aromatics) and C5 and alkane below etc..
In the application, collection is that the volatile organic matter of coal chemical industry enterprises difference emission source or emission point is passed through pipe network
Centralized collection.Emission source or emission point include coal liquefaction unit during coal chemical industry, coal gas unit, gas purification units,
Synthesising gas systeming carbinol unit, methanol oxidation react alkene (MTO/MTP) unit and separation of olefins unit processed etc..
The volatile organic matter of the mutual closer each emission point of distance delivers into blending tank through pipeline, carries out abundant
Subsequent processing unit is entered back into after mixing, such as MTO/MTP regenerator or coking heater or sulphur incinerator.
Gathering line and storage device are in micro-vacuum state during collection, so that gathering line and storage device
External pressure (atmospheric pressure) is slightly above gathering line and storage device internal pressure, so that volatile organic matter be avoided to volatilize
Or leakage.Micro-vacuum state is by setting vacuum pump to realize.
In some embodiments, collect and transmission process in vacuum degree can be controlled within the scope of 0.01~20KPa, can also
Directly control for any one of 0.01KPa, 3KPa, 5KPa, 10KPa, 15KPa and 20KPa or it is any between the two
Value range.
In some preferred embodiments, collect and transmission process in vacuum degree can be controlled within the scope of 0.2~2KPa,
It can also directly control as any one of 0.1KPa, 0.4KPa, 0.5KPa, 1KPa, 1.5KPa and 2KPa or any the two
Between value range.
In some embodiments, collect and transmission process in, in volatile organic matter oxygen content be no more than 2v%,
It is less than or equal to 2v%.
In some preferred embodiments, collect and transmission process in, oxygen content is no more than in volatile organic matter
1v%, namely it is less than or equal to 1v%.
By the content of oxygen in strict control collection and transmission process, so that the safety of entire processing method can be improved
Property.Oxygen content can also can be controlled by on-line monitoring by the way of being measured by sampling.
It can refer to ground, in some embodiments, oxygen content can be adjusted by being passed through inert gas, to be passed through indifferent gas
Body occupies the volumetric spaces of former oxygen, so that extra oxygen be discharged, meets oxygen content requirement.
In some preferred embodiments, oxygen content is adjusted by being passed through nitrogen, which is easier to acquisition and cost
More other inert gases are lower, and practicability is stronger.Further, since containing oxygen in air in itself, therefore, nitrogen can be compared with air
It is more applicable for the case where reducing oxygen content.
Volatile organic matter after uniformly collecting is adopted according to its relative position and specific ingredient and respective concentration etc.
With suitable preconditioning technique, the higher volatile organic matter of concentration is pre-processed, it is on the one hand recyclable to have exploitation value
On the other hand the part volatile organic matter of value can control the volatile organic matter of high concentration in safety limit.
Can refer to ground, in the application, preprocess method can for diesel oil absorption+alkali cleaning processing or diesel oil absorption+alkali cleaning+point
Son sieve adsorption treatment.
The purpose of preconditioning technique is to reduce the concentration and hydrogen sulfide content of volatile organic matter.Diesel oil absorption+alkali cleaning
Processing or diesel oil absorption+alkali cleaning+molecular sieve adsorption treatment specific steps can refer to the related prior art.
It is nonpolar solvent that diesel oil, which absorbs processing based on diesel oil, and the molecule in oil gas is nonpolarity or low pole, the two energy
It is enough mutually dissolved, by the organic solvent (diesel oil) and exhaust gas contact with easy absorption oil gas, oil gas therein is dissolved to reach
To the purpose of initial absorption and removing.It is handled through diesel oil absorption, most oil gas in exhaust gas and most of organic sulfur compound
It is absorbed by diesel oil, the diesel oil after absorption carries out hydrotreating.
Molecular sieve absorption refers to the pollutant absorbed in exhaust gas using solid molecular sieves.It will be dirty after molecular sieve reaches saturation
Dye object is desorbed out, and recycling catalytic combustion technology to make in exhaust gas, organic matter deep oxidation is at carbon dioxide and water, to reach
The purpose of purification.
In the application, after pretreatment, the concentration of volatile organic matter is no more than 25000mg/Nm3。
In some preferred embodiments, after pretreatment, the concentration of volatile organic matter is no more than 12000mg/
Nm3。
It is worth noting that concentration is high if the VOCs flow of certain emission point is big in treatment process, then the point can be arranged
The VOCs put individually is pre-processed, and making that treated, VOCs concentration is reduced to 25000mg/Nm3Hereinafter, optimal≤12000mg/
Nm3。
After pretreatment, volatile organic matter tail gas is delivered to MTO/MTP regenerator or coking heater or sulphur is burnt
It burns the directly burning of the Existiing plants such as furnace to handle, while realizing VOCs safety economy efficient process, qualified discharge, be effectively reduced
The VOCs treatment cost of enterprise.
Further, the regenerated flue gas after burning is passed through flue gas purification system, to be dusted, desulfurization and denitration process,
Then direct emission.
From the above, the processing method of coal chemical industry enterprises volatile organic matter provided herein has the advantage that
Or beneficial effect：
(1) VOCs is collected and transportation system fully ensures that safe collection and the conveying of VOCs.In view of coal chemical industry enterprises are each
The explosion limit and oxygen content of contained hydrocarbon component in the VOCs of process units discharge, are contained by the concentration or oxygen that control VOCs
Amount is to ensure the safety in VOCs conveying and mixed process.
(2) it is operated under conditions of MTO/MTP regenerator or sulphur incinerator or coking heater etc. normally produce, it can be real
The efficient removal (> 98wt%) of existing VOCs and the high standard discharge (discharge standard that can reach incinerator) for realizing VOCs.
(3) VOCs of coal chemical industry enterprises difference emission source is utilized into network security centralized collection, then according to it with respect to position
It sets, the specific ingredient of VOCs and respective concentration etc., after suitable preconditioning technique, is introduced into therewith apart from relative close
MTO/MTP regenerator or the Existiing plants such as coking heater or sulphur incinerator carry out direct burning processing, realizing
While VOCs safety economy efficient process, qualified discharge, the VOCs treatment cost of enterprise is effectively reduced.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The VOCs that the devices such as gas unit processed, synthesis unit and separation of olefins unit by coal chemical industry enterprises are discharged is received respectively
It is sent into gas mixing filling by gas distributor after collection to be sufficiently mixed, the oxygen content after mixing in VOCs is 0.55% (v), so
The absorption of low temperature diesel oil and alkali cleaning processing are carried out afterwards, and absorbing temperature is 12 DEG C, and the diesel oil after absorption VOCs carries out hydrotreating, through bavin
VOCs concentration after oil absorption is by 125000mg/Nm3Drop to 10500mg/Nm3, hydrogen sulfide content 65mg/Nm3, due to sulphur
Change hydrogen content height, absorbed using the sodium hydroxide solution of 10wt%, then the hydrogen sulfide content after alkali cleaning is 0.60mg/Nm3, through bavin
After VOCs after oil absorption and alkali cleaning is mixed with the main wind of FCC apparatus, enters the burning of FCC regenerator together and handle, just
Under normal production status, the VOCs concentration after regenerator burns is 15mg/Nm3, reach harsh discharged in burning standard.
Embodiment 2
The tail gas containing VOCs that the gas purification units of coal chemical industry enterprises is discharged, coal coking device discharge containing VOCs's
Tail gas etc. carries out diesel oil absorption after collecting and mixing respectively, and the VOCs concentration after absorption is by 76200mg/Nm3Drop to 986mg/
Nm3, it is sent into sulphur incinerator nearby or coking heater carries out burning disposal, VOCs generates carbon dioxide after burning and water is straight
Run in and put, the VOCs concentration after burning is 12mg/Nm3, the harsh discharged in burning standard that reaches.
In conclusion the processing method economy of coal chemical industry enterprises volatile organic matter provided in an embodiment of the present invention, height
Effect, safety, it is advanced, it can be effectively reduced the treatment cost of the volatile organic matter of enterprise.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of processing method of coal chemical industry enterprises volatile organic matter, which is characterized in that include the following steps：Collect coalification
The volatile organic matter of each emission point discharge, pre-processes to reduce the concentration and sulphur of the volatile organic matter during work
Change hydrogen content, is then sent to MTO/MTP regenerator or coking heater or sulphur incinerator burning processing, the regeneration after burning
Flue gas is passed through flue gas purification system to be dusted, desulfurization and denitration process.
2. processing method according to claim 1, which is characterized in that gathering line and storage device are equal during collection
In micro-vacuum state, vacuum degree control is in 0.01~20KPa during collection.
3. processing method according to claim 2, which is characterized in that vacuum degree control is in 0.2~2KPa during collection.
4. processing method according to claim 1, which is characterized in that during collection, in the volatile organic matter
Oxygen content is no more than 2v%.
5. processing method according to claim 4, which is characterized in that oxygen content is no more than in the volatile organic matter
1v%.
6. processing method according to claim 4 or 5, which is characterized in that the oxygen content by be passed through inert gas come
It adjusts.
7. processing method according to claim 6, which is characterized in that the oxygen content is adjusted by being passed through nitrogen.
8. processing method according to claim 1, which is characterized in that preprocess method be diesel oil absorption+alkali cleaning processing or
Diesel oil absorption+alkali cleaning+molecular sieve adsorption treatment.
9. processing method according to claim 1, which is characterized in that after pretreatment, the volatile organic matter it is dense
Degree is no more than 25000mg/Nm3。
10. processing method according to claim 9, which is characterized in that the concentration of the volatile organic matter is no more than
12000mg/Nm3。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647149A (en) * | 2018-12-14 | 2019-04-19 | 河北利源环保科技有限公司 | The dispersing gas VOCs processing system of the cokingization production all kinds of uncontrollable discharges in workshop |
| CN111701399A (en) * | 2020-07-31 | 2020-09-25 | 中国石油化工股份有限公司 | Method for treating volatile organic compounds of petrochemical enterprises |
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| CN205145915U (en) * | 2015-08-14 | 2016-04-13 | 北京万向新元工程技术有限公司 | Composite technology waste gas pollution control and treatment is equipped |
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| CN101055084A (en) * | 2006-02-22 | 2007-10-17 | 石川岛播磨重工业株式会社 | Method of processing volatile organic compound and system for processing volatile organic compound |
| CN205145915U (en) * | 2015-08-14 | 2016-04-13 | 北京万向新元工程技术有限公司 | Composite technology waste gas pollution control and treatment is equipped |
| CN106642165A (en) * | 2017-01-23 | 2017-05-10 | 中石化炼化工程（集团）股份有限公司 | Processing method for volatile organic compounds of refinery plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647149A (en) * | 2018-12-14 | 2019-04-19 | 河北利源环保科技有限公司 | The dispersing gas VOCs processing system of the cokingization production all kinds of uncontrollable discharges in workshop |
| CN111701399A (en) * | 2020-07-31 | 2020-09-25 | 中国石油化工股份有限公司 | Method for treating volatile organic compounds of petrochemical enterprises |
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