CN105709569A - System for removing volatile organic compounds emitted in coal tar processing process - Google Patents
System for removing volatile organic compounds emitted in coal tar processing process Download PDFInfo
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- CN105709569A CN105709569A CN201610129852.XA CN201610129852A CN105709569A CN 105709569 A CN105709569 A CN 105709569A CN 201610129852 A CN201610129852 A CN 201610129852A CN 105709569 A CN105709569 A CN 105709569A
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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
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
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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
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
- B01D2267/30—Same type of filters
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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
- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a system for removing volatile organic compounds emitted in the coal tar processing process. The system comprises an organic waste gas pretreatment system, an organic waste gas buffer and inner circulation system and an organic waste gas burning system. The organic waste gas pretreatment system comprises a waste gas absorption device and a filtering device for filtering particulate matter in waste gas, wherein the waste gas absorption device and the filtering device are sequentially connected. The waste gas absorption device comprises a Venturi tube, a circulation groove, an absorption tower, a cooler and a circulation pump. The organic waste gas buffer and inner circulation system comprises a draught fan and a gas cabinet which are sequentially connected. The draught fan is used for pressurizing and feeding pretreated gas into the gas cabinet to be stored. The gas cabinet is used for storing the gas and condensing water vapor in the waste gas. The draught fan is communicated with an exhaust port of the filtering device through a pipeline. A gas inlet of the organic waste gas burning system is communicated with an exhaust port of the gas cabinet through a pipeline. According to the removal system, treatment cost is low, removal efficiency is high, and meanwhile secondary pollution can be avoided.
Description
Technical field
The present invention relates to coal tar processing industry technical field of waste gas treatment, particularly relate to the elimination system of a kind of volatile organic matter for coal tar processing process discharge.
Background technology
China's coal tar processing industry has over one hundred enterprise, and aggregated capacity is more than 20,000,000 tons, and as the downstream industry of coking industry, the production capacity of coal tar processing process is gradually increased.The main purpose of coal tar processing process is to be obtained the intermediate products such as such as light oil, carbolic oil, naphtalene oil, washing oil, a carbolineum, anthracene oil and Colophonium by reduced pressure distillation process, obtains the chemical products with high added-value such as benzene, refined naphthalene, essence phenol and transformation of the way Colophonium then through further deep processing.But, coal tar processing process produces substantial amounts of VOCs(VolatileOrganicCompounds with being but difficult to avoid that, volatile organic matter), it is mainly produced by regions such as storage, processing, productions, such as raw material tank field, tar distillation groove district, commercial naphthalene groove district, Jing Fen device district, and liquid asphalt storage area etc..For storage tank region, the material turnover breathing of raw oil, intermediate products and product oil produces substantial amounts of organic exhaust gas, VOCs in these organic exhaust gas is mainly made up of benzene class, phenols, naphthalene class and bitumen flue gas etc., and health can be caused great injury by the existence of these VOCs.Such as, benzene is exactly powerful carcinogen, and human body is had great harm by Long Term Contact；Phenol may result in human body headache, dizziness；Naphthalene can cause makes people poisoning, damages nerve system of human body；Glance coal can cause nausea, vomit, the symptom such as cause that leukocyte increases.If it addition, the VOCs that coal tar processing process produces discharges for a long time, it is also possible to combine formation aerosol with the sulfate in air, nitrate, eventually becoming the presoma that haze produces.
For organic exhaust gas produced by storage tank region, owing to the oil product temperature of each storage tank is high so that the temperature of produced organic exhaust gas is also higher (80 ~ 150 DEG C).Secondly as heavy constituent (naphthalene class, anthracene class, the Colophonium) content in tar is higher so that heavy constituent content significantly high (> 30wt% in the VOCs of generation), heavy constituent material is volatile for these, easily condense, and elimination difficulty is bigger.Furthermore, it is interval owing to the input and output material in storage tank region operates so that the generation of waste gas is also interval, causes the very big (100 ~ 2500m of fluctuation of exhaust gas flow3/ h), the more difficult control of Processing tecchnics.Further, since water content is higher in raw tar, sucks substantial amounts of air during the discharging in storage tank region in addition, cause that in organic exhaust gas, VOCs concentration and inert component are (such as H2O、N2) compare on the low side, VOCs elimination administer selectivity poor.Therefore, the organic exhaust gas of coal tar processing process is compared with waste gas produced by other industry, there are the unfavorable factors such as complicated component, physico-chemical property are changeable, intractability is high, only according to the VOCs emission problem of a kind of Treatment process (absorption and sorption, condensation or burning) hardly possible thorough solution coal tar processing process.
At present, the VOCs Treatment process of domestic coal tar processing industry still adopts traditional negative pressure-spraying technique, absorbs the VOCs in organic exhaust gas using washing oil as absorbent.But, negative pressure-spraying technique has shown many defects, it is impossible to meet more and more harsh environmental protection standard.First, owing to the organic exhaust gas temperature in storage tank region is higher, and washing oil has certain volatility, while washing oil scrubbing exhaust gas, himself temperature also can gradually rise, once the temperature of washing oil is more than 80 DEG C, is not only difficult to clean waste gas, himself is one of source becoming VOCs on the contrary, causes discharge to exceed standard.Secondly, washing oil is the fraction that boiling point is higher than 230 DEG C, belongs to heavier component, therefore that light components (such as the benzene class) assimilation effect in VOCs is poor.Furthermore, the washing oil after saturated can be mixed in raw tar once again, enters decompression distillation process, and the VOCs that washing oil absorbs is likely to again discharge once again, takes stopgap measures and does not effect a permanent cure.Tradition, poor efficiency, backward negative pressure-spraying technique need to be improved.In recent years, many enterprises introduce the method for directly burning, although VOCs can thoroughly be removed by this method, but owing to the coal-tar middle oil heavy constituent of VOCs is more, in organic exhaust gas, VOCs concentration is low, exhaust gas flow fluctuation is big, causes the defects such as initiation temperature height in combustion process, poor selectivity, energy consumption are big, control is difficult, and technical and economic feasibility is poor.Therefore, coal tar processing process VOCs administer urgently with low cost, removal efficiency is high, the Technology of non-secondary pollution occur.
Summary of the invention
Present invention is primarily targeted at the elimination system that a kind of volatile organic matter for coal tar processing process discharge is provided, it is intended to reduce processing cost, improve removal efficiency, avoid secondary pollution simultaneously.
For achieving the above object, the present invention provides the elimination system of a kind of volatile organic matter for coal tar processing process discharge, including for absorbing the organic exhaust gas pretreatment system of volatile organic matter, organic exhaust gas buffering and internal circulation system and the organic exhaust gas combustion system for the waste gas that burns, wherein
Described organic exhaust gas pretreatment system includes the exhaust gas absorption device that is sequentially connected with and for filtering the defecator of particulate matter in waste gas, described exhaust gas absorption device includes Venturi tube, circulating slot, absorption tower, cooler and circulating pump, described Venturi tube is installed on the air inlet of circulating slot, Venturi tube is connected with head tank by pipeline, described circulating slot accommodates the absorbent for absorbing volatile organic matter, described absorption tower connects with the air vent of circulating slot, the spray equipment for spray-absorption agent it is provided with in described absorption tower, the absorbent outlet of described circulating slot is connected through the spray liquid entrance of entrance with Venturi tube of circulating pump and cooler and absorption tower successively by pipeline, the air vent on described absorption tower is connected with defecator by pipeline；
Described organic exhaust gas buffering and internal circulation system include the blower fan and the gas holder that are sequentially connected with, described blower fan stores for pretreated gas pressurized being sent in gas holder, described blower and pipeline connects with the air vent of defecator, and described gas holder is used for storing steam in gas and condensation waste gas；
The air inlet of described organic exhaust gas combustion system is connected with the air vent of gas holder by pipeline.
Preferably, the elimination system of the described volatile organic matter for coal tar processing process discharge also includes for storing gas and reducing the surge tank of gas pressure fluctuation, one end of this surge tank is connected with the air vent of gas holder by pipeline, and the other end connects with head tank.
Preferably, the elimination system of the described volatile organic matter for coal tar processing process discharge also includes the air relief valve for reducing the discharged gas pressure of gas holder, and this air relief valve is installed on the pipeline between gas holder and surge tank.
Preferably, the elimination system of the described volatile organic matter for coal tar processing process discharge also includes the breather valve being installed on the gas outlet place pipeline of head tank, described breather valve is when head tank discharging, suck the storage gas in surge tank, when head tank charging, breather valve outwards breathes out waste gas.
Preferably, described absorption tower can be packed tower or sieve-plate tower, and the tower top place close to absorption tower is provided with liquid distribution trough.
Preferably, described absorbent is one or more mixture in naphtalene oil, washing oil, a carbolineum, anthracene oil.
Preferably, described cooler is water cooling equipment.
Preferably, described gas holder is double; two film gas holder or steel gas holder.
Preferably, described breather valve is mechanical breather valve.
The elimination system that the present invention proposes, adopt the means absorbing, filter and condense triplicity, eliminate the tar heavy constituent in waste gas, particulate matter and steam, organic exhaust gas is performed twice at absorbent in Venturi tube with absorption tower simultaneously and contact, absorbent recycles, and makes that this elimination system processing cost is low and removal efficiency is high.By arranging cooler, absorbent is cooled down, it is to avoid the absorbent that temperature raises also becomes source exhaust gas, it is to avoid secondary pollution.Buffering before gas holder achieves waste gas burning is set, makes exhaust gas flow be in more stable scope, it is to avoid the exhaust gas flow fluctuation impact to combustion process.By arranging air relief valve and surge tank, portion gas in gas holder can enter in surge tank through air relief valve, realize the second time buffering of waste gas, last gas is entered in head tank by surge tank, achieve the internal recycle of waste gas, decrease air and enter head tank, make the concentration of VOCs in system be maintained at zone of reasonableness.
Accompanying drawing explanation
Fig. 1 is the present invention structural representation for the elimination System Preferred embodiments of the volatile organic matter of coal tar processing process discharge.
In figure, 1-head tank, 2-breather valve, 3-circulating slot, 4-Venturi tube, 5-absorption tower, 6-cooler, 7-circulating pump, 8-filter, 9-blower fan, 10-gas holder, 11-air relief valve, 12-surge tank, 13-combustion furnace.
Purpose of the present invention realization, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
It is the present invention structural representation for the elimination System Preferred embodiments of the volatile organic matter of coal tar processing process discharge with reference to Fig. 1, Fig. 1.
In this preferred embodiment, a kind of elimination system of the volatile organic matter for coal tar processing process discharge, including for absorb the organic exhaust gas pretreatment system of volatile organic matter, organic exhaust gas buffering with internal circulation system and the organic exhaust gas combustion system for the waste gas that burns, wherein
The exhaust gas absorption device that organic exhaust gas pretreatment system includes being sequentially connected with (can arrange many sets or a set of, overlap between exhaust gas absorption device connected in series or in parallel more) and for filtering the defecator (defecator can arrange many sets or a set of) of particulate matter in waste gas, exhaust gas absorption device includes Venturi tube 4, circulating slot 3, absorption tower 5, cooler 6 and circulating pump 7, Venturi tube 4 is installed on the air inlet of circulating slot 3, Venturi tube 4 is connected with head tank 1 by pipeline, circulating slot 3 accommodates the absorbent for absorbing volatile organic matter, absorption tower 5 connects with the air vent of circulating slot 3, the spray equipment for spray-absorption agent it is provided with in absorption tower 5, the absorbent outlet of circulating slot 3 is connected through the spray liquid entrance of entrance with Venturi tube 4 of circulating pump 7 and cooler 6 and absorption tower 5 successively by pipeline, the air vent on absorption tower 5 is connected with defecator by pipeline；
Organic exhaust gas buffering and internal circulation system include the blower fan 9 and the gas holder 10 that are sequentially connected with, store for pretreated gas pressurized is sent in gas holder 10, blower fan 9 is connected with the air vent of defecator by pipeline, and gas holder 10 is used for storing steam in gas and condensation waste gas；
The air inlet of organic exhaust gas combustion system is connected with the air vent of gas holder 10 by pipeline.
Organic exhaust gas combustion system includes at least one combustion furnace 13, and organic exhaust gas combustion system makes the VOCs in organic exhaust gas be converted into CO under high temperature (800 ~ 1500 DEG C)2And H2O。
Combustion furnace 13 can be the existing tube furnace of coal tar processing process, it is also possible to be newly-built incinerator.In combustion furnace 13, combustion process can be mix other fuel one companion to burn, it is also possible to is direct burning.Defecator is filled with gravel particle, zeolite, porous activated carbon or micropore ceramics.Defecator at least includes a coarse filter or fine filter and the serial or parallel connection of coarse filter and fine filter.
Further, this elimination system also includes for storing gas and reducing the surge tank 12 of gas pressure fluctuation, and one end of this surge tank 12 is connected with the air vent of gas holder 10 by pipeline, and the other end connects with head tank 1.
Further, this elimination system also includes the air relief valve 11 for reducing the discharged gas pressure of gas holder 10, and this air relief valve 11 is installed on the pipeline between gas holder 10 and surge tank 12.
Further, this elimination system also includes the breather valve 2 being installed on the gas outlet place pipeline of head tank 1, and breather valve 2 sucks the storage gas in surge tank 12 when head tank 1 discharging, and when head tank 1 charging, breather valve 2 outwards breathes out waste gas.
Specifically, in the present embodiment, absorption tower 5 is packed tower or sieve-plate tower, and the tower top place close to absorption tower 5 is provided with liquid distribution trough.Absorbent can be one or more mixture (referring to two-phase or multiphase mixture any in naphtalene oil, washing oil, a carbolineum, anthracene oil) in naphtalene oil, washing oil, a carbolineum, anthracene oil.Cooler 6 is water cooling equipment.Gas holder 10 is double; two film gas holder or steel gas holder.Breather valve 2 is mechanical breather valve.Breather valve 2 can be disk-type mechanical breather valve, it is also possible to be spring type mechanical breather valve.
The work process of this elimination system is as follows: the organic exhaust gas in head tank 1 enters into Venturi tube 4 from breather valve 2 and is drawn in exhaust gas absorption device, organic exhaust gas carries out in Venturi tube 4 with absorbent contacting for the first time, subsequently, organic exhaust gas through circulating slot 3 from bottom to top through absorption tower 5, and absorbent
Then carry out counter current contacting with organic exhaust gas from top to bottom, complete the absorption process of VOCs heavy constituent in organic exhaust gas.Subsequently, the organic exhaust gas that absorption tower 5 is discharged enters in defecator, and gravel particle in defecator, zeolite, porous activated carbon or micropore ceramics remove the particulate material (such as naphthalene dust) of residual in organic exhaust gas, and adsorb the steam in waste gas.Through defecator flow out organic exhaust gas by blower fan 9 pressurize feeding gas holder 10 in storage.Gas holder 10 also condenses steam in waste gas simultaneously, and the waste gas that the air vent of gas holder 10 flows out enters in surge tank 12 through the adjustment effect of air relief valve 11 on the one hand, enters in organic exhaust gas combustion system on the other hand and burns.Waste gas in surge tank 12 enters back in head tank 1, to realize the internal recycle of waste gas, reduces air and enters head tank 1.
The temperature of absorbent is controlled by cooler 6 so that it is temperature is maintained at zone of reasonableness (40 ~ 60 DEG C), thus reaching the nonvolatile purpose of absorbent self, it is to avoid secondary pollution.Wherein, in the present embodiment, the treating capacity of single organic exhaust gas overlapping exhaust gas absorption device is at 100 ~ 1500m3In the scope of/h, in waste gas, the concentration of VOCs can at 500 ~ 30000mg/m3Scope, the flow of absorbent is at 10 ~ 150m3/ h, absorbent replacement frequency at 7 ~ 60 days/time, exhaust gas absorption device to the removal efficiency of tar heavy constituent up to 70 ~ 95%.
Filter 8 is 100 ~ 1500m processing tolerance3The scope inner filtration efficiency of/h is 95 ~ 99.5%, and can remove the steam in waste gas, and removal efficiency is 50 ~ 60%.
It is 1000 ~ 5000m that organic exhaust gas pressurization (0.5 ~ 3kPa) is sent into volume by blower fan 9 afterwards3Gas holder 10 in store, gas holder 10 condenses the condensation efficiency of steam in waste gas can reach 60 ~ 95%；The pressure (0.3 ~ 1kPa) of the provided gas of air relief valve 11 scalable gas holder 10；The volume of surge tank 12 is at 50 ~ 500m3In scope, a certain amount of organic exhaust gas can be stored；During head tank 1 discharging, breather valve 2(inlet and outlet pressure is set as 0.1 ~ 0.3kPa) suction gas provided by surge tank 12.
In the present embodiment, combustion furnace 13(50 ~ 500m3) can by organic exhaust gas (100 ~ 3000m3/ h) burn completely under the high temperature of 800 ~ 1500 DEG C, the removal efficiency of VOCs is up to 95 ~ 99.9%, and VOCs exit concentration is less than 10mg/m3, rate of discharge is lower than 0.1kg/h.
The elimination system that the present embodiment proposes, adopt the means absorbing, filter and condense triplicity, eliminate the tar heavy constituent in waste gas, particulate matter and steam, organic exhaust gas is performed twice at absorbent in Venturi tube 4 with absorption tower 5 simultaneously and contact, absorbent recycles, and its processing cost is low and removal efficiency is high.By arranging cooler 6, absorbent is cooled down, it is to avoid the absorbent that temperature raises also becomes source exhaust gas, it is to avoid secondary pollution.Buffering before gas holder 10 achieves waste gas burning is set, makes exhaust gas flow be in more stable scope, it is to avoid the exhaust gas flow fluctuation impact to combustion process.By arranging air relief valve 11 and surge tank 12, portion gas in gas holder 10 can enter in surge tank 12 through air relief valve 11, realize the second time buffering of waste gas, last gas is entered in head tank 1 by surge tank 12, achieve the internal recycle of waste gas, decrease air and enter head tank 1, make the concentration of VOCs in system be maintained at zone of reasonableness.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing description of the present invention and accompanying drawing content to make, or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (9)
1. the elimination system for the volatile organic matter of coal tar processing process discharge, it is characterized in that, including for absorb the organic exhaust gas pretreatment system of volatile organic matter, organic exhaust gas buffering with internal circulation system and the organic exhaust gas combustion system for the waste gas that burns, wherein
Described organic exhaust gas pretreatment system includes the exhaust gas absorption device that is sequentially connected with and for filtering the defecator of particulate matter in waste gas, described exhaust gas absorption device includes Venturi tube, circulating slot, absorption tower, cooler and circulating pump, described Venturi tube is installed on the air inlet of circulating slot, Venturi tube is connected with head tank by pipeline, described circulating slot accommodates the absorbent for absorbing volatile organic matter, described absorption tower connects with the air vent of circulating slot, the spray equipment for spray-absorption agent it is provided with in described absorption tower, the absorbent outlet of described circulating slot is connected through the spray liquid entrance of entrance with Venturi tube of circulating pump and cooler and absorption tower successively by pipeline, the air vent on described absorption tower is connected with defecator by pipeline；
Described organic exhaust gas buffering and internal circulation system include the blower fan and the gas holder that are sequentially connected with, described blower fan stores for pretreated gas pressurized being sent in gas holder, described blower and pipeline connects with the air vent of defecator, and described gas holder is used for storing steam in gas and condensation waste gas；
The air inlet of described organic exhaust gas combustion system is connected with the air vent of gas holder by pipeline.
2. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 1, it is characterized in that, also include for storing gas and reducing the surge tank of gas pressure fluctuation, one end of this surge tank is connected with the air vent of gas holder by pipeline, and the other end connects with head tank.
3. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 2, it is characterised in that also including the air relief valve for reducing the discharged gas pressure of gas holder, this air relief valve is installed on the pipeline between gas holder and surge tank.
4. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 2, it is characterized in that, also include the breather valve being installed on the gas outlet place pipeline of head tank, described breather valve is when head tank discharging, suck the storage gas in surge tank, when head tank charging, breather valve outwards breathes out waste gas.
5. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 1, it is characterised in that described absorption tower can be packed tower or sieve-plate tower, and the tower top place close to absorption tower is provided with liquid distribution trough.
6. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 1, it is characterised in that described absorbent is one or more mixture in naphtalene oil, washing oil, a carbolineum, anthracene oil.
7. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 1, it is characterised in that described cooler is water cooling equipment.
8. the elimination system of the volatile organic matter for coal tar processing process discharge as claimed in claim 1, it is characterised in that described gas holder is double; two film gas holder or steel gas holder.
9. as claimed in any of claims 1 to 8 in one of claims for the elimination system of the volatile organic matter of coal tar processing process discharge, it is characterised in that described breather valve is mechanical breather valve.
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| CN106237820A (en) * | 2016-10-19 | 2016-12-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of process technique containing VOCs industrial waste gas and system |
| CN107261822A (en) * | 2017-06-30 | 2017-10-20 | 迪天环境技术南京股份有限公司 | It is a kind of can double purification and self-loopa handle VOCs equipment and process |
| CN109102997A (en) * | 2018-11-02 | 2018-12-28 | 保定泓翔电力设备有限公司 | The non-maintaining intelligent moisture absorber of transformer |
| CN109316893A (en) * | 2018-12-03 | 2019-02-12 | 河北格源环保科技有限公司 | A kind of cold bulging volatilization gas zero-emission negative pressure recovery system |
| CN109529529A (en) * | 2018-12-29 | 2019-03-29 | 江苏苏净集团有限公司 | A kind of analog processing system of volatile organic compounds |
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| CN111720841A (en) * | 2020-06-24 | 2020-09-29 | 北京市环境保护科学研究院 | High-efficiency purification of VOC (volatile organic compounds) generated in roast duck manufacturing processSSystem and method |
| CN113069874A (en) * | 2021-03-31 | 2021-07-06 | 中钢集团鞍山热能研究院有限公司 | Treatment system and process suitable for VOCs in chemical production area of coking plant |
| CN113069893A (en) * | 2021-03-31 | 2021-07-06 | 中钢集团鞍山热能研究院有限公司 | VOC (volatile organic Compounds) suitable for tar storage tanksProcessing system and process |
| CN113694697A (en) * | 2021-08-31 | 2021-11-26 | 中国平煤神马能源化工集团有限责任公司 | Waste gas treatment device in coal tar course of working |
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