CN105709569B - The removing system of volatile organic matter for coal tar processing process discharge - Google Patents
The removing system of volatile organic matter for coal tar processing process discharge Download PDFInfo
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- CN105709569B CN105709569B CN201610129852.XA CN201610129852A CN105709569B CN 105709569 B CN105709569 B CN 105709569B CN 201610129852 A CN201610129852 A CN 201610129852A CN 105709569 B CN105709569 B CN 105709569B
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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
-
- 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
-
- 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 kind of removing systems of the volatile organic matter for coal tar processing process discharge, including organic exhaust gas pretreatment system, organic exhaust gas buffers and internal circulation system and organic exhaust gas combustion system, wherein, organic exhaust gas pretreatment system includes sequentially connected exhaust gas absorption device and the filter device for filtering particulate matter in exhaust gas, exhaust gas absorption device includes Venturi tube, circulating slot, absorption tower, cooler and circulating pump, it includes sequentially connected wind turbine and gas holder that organic exhaust gas, which is buffered with internal circulation system, wind turbine is used to pretreated gas pressurized being sent into gas holder and store, gas holder is for storing vapor in gas and condensation exhaust gas, blower and pipeline is connected to the exhaust outlet of filter device；The air inlet of organic exhaust gas combustion system is connected to by pipeline with the exhaust outlet of gas holder.Removing system proposed by the present invention, processing cost is low, removal efficiency is high, while also can avoid secondary pollution.
Description
Technical field
The present invention relates to coal tar processing industry technical field of waste gas treatment, more particularly to one kind being used for coal tar processing mistake
The removing system of the volatile organic matter of journey discharge.
Background technology
It is more than 20,000,000 tons that China's coal tar processing industry, which has over one hundred enterprise, aggregated capacity, the downstream as coking industry
The production capacity of industry, coal tar processing process is gradually increasing.The main purpose of coal tar processing process is by vacuum distillation work
Skill and obtain the intermediate products such as light oil, carbolic oil, naphtalene oil, washing oil, a carbolineum, anthracene oil and pitch, using further depth
It processes and obtains the chemical products with high added-value such as benzene, refined naphthalene, smart phenol and restructuring pitch.However, coal tar processing process is but difficult to
Generate a large amount of VOCs with avoiding（Volatile Organic Compounds, volatile organic matter）, mainly by storing, plus
Produced by the regions such as work, production, such as raw material tank field, tar distillation slot area, commercial naphthalene slot area, Jing Fen devices area and liquid
Body bituminous pitch storing area etc..For storage tank region, the material disengaging breathing of feedstock oil, intermediate products and product oil produces greatly
The organic exhaust gas of amount, the VOCs in these organic exhaust gas are mainly made of benzene class, phenols, naphthalenes and bitumen flue gas etc., these
The presence of VOCs can cause health greatly to injure.For example, benzene is exactly strength carcinogenic substance, Long Term Contact has pole to human body
Big harm；Phenol can lead to human body headache, dizziness；Naphthalene can cause to make one to be poisoned, and damage nerve system of human body；Glance coal can cause
Nausea and vomiting causes white blood cell the symptoms such as to increase.In addition, if the VOCs that coal tar processing process generates is discharged for a long time, may be used also
It can be combined to form aerosol with sulfate, the nitrate in air, eventually become the presoma of haze generation.
For organic exhaust gas caused by storage tank region, since the oil product temperature of each storage tank is high so that produced to have
The temperature of machine exhaust gas is also higher（80~150℃）.Secondly as the heavy constituent in tar（Naphthalenes, anthracene class, pitch）Content is higher,
So that heavy constituent content is very high in the VOCs generated（>30wt%）, these heavy constituent substances are volatile, easy condensation, removing difficulty compared with
Greatly.Furthermore since the operation of the input and output material in storage tank region is interval so that the generation of exhaust gas is also interval, leads to waste gas stream
The fluctuation of amount is very big（100~2500m3/h）, Processing tecchnics are more difficult to control.In addition, due in raw tar water content it is higher, add
Storage tank region discharging when suck a large amount of air, lead to VOCs concentration and inert component in organic exhaust gas（Such as H2O、N2）Phase
Than relatively low, the selectivity that VOCs removings are administered is poor.Therefore, produced by the organic exhaust gas of coal tar processing process and other industry
Exhaust gas compare, have the unfavorable factors such as complicated component, physico-chemical property are changeable, intractability is high, only according to a kind of Treatment process（It inhales
It receives, absorption, condense or burn）The hardly possible thorough VOCs emission problems for solving coal tar processing process.
Currently, the VOCs Treatment process of domestic coal tar processing industry still uses traditional negative pressure-spraying technique, with washing oil
The VOCs in organic exhaust gas is absorbed as absorbent.But negative pressure-spraying technique has shown many defects, cannot meet
More and more harsh environmental protection standard.Firstly, since the organic exhaust gas temperature in storage tank region is higher, and washing oil has certain volatilization
Property, while washing oil scrubbing exhaust gas, its own temperature can also gradually rise, once the temperature of washing oil is more than 80 DEG C, not only be difficult to
Exhaust gas is cleaned, its own becomes one of the source of VOCs instead, causes to discharge exceeded.Secondly, washing oil is that boiling point is higher than 230 DEG C
Fraction belongs to heavier component, therefore to the light components in VOCs（Such as benzene class）Assimilation effect is poor.Furthermore after saturation
Washing oil can be mixed into raw tar once again, and into vacuum distillation process, the VOCs that washing oil is absorbed may be discharged, be taken stopgap measures once again again
Without effecting a permanent cure.Negative pressure-spraying technique that is traditional, inefficient, falling behind needs to be improved.In recent years, many enterprises introduce direct combustion
The method of burning, the method is although can thoroughly remove VOCs, and since tar heavy constituent is more in VOCs, VOCs is dense in organic exhaust gas
Spend low, exhaust gas flow fluctuation is big, the defects of causing in combustion process big initiation temperature height, poor selectivity, energy consumption, control hardly possible, skill
Art economic feasibility is poor.Therefore, the VOCs improvement of coal tar processing process is urgently of low cost, removal efficiency is high, without secondary
The technology of pollution occurs.
Invention content
The main purpose of the present invention is to provide a kind of the de- of volatile organic matter for coal tar processing process discharge
Except system, it is intended to reduce processing cost, improve removal efficiency, while avoid secondary pollution.
To achieve the above object, the present invention provides a kind of taking off for volatile organic matter for coal tar processing process discharge
Include for absorbing the organic exhaust gas pretreatment system of volatile organic matter, organic exhaust gas buffering and internal circulation system except system
And the organic exhaust gas combustion system for burning waste gas, wherein
The organic exhaust gas pretreatment system includes sequentially connected exhaust gas absorption device and for filtering particle in exhaust gas
The filter device of object, the exhaust gas absorption device include Venturi tube, circulating slot, absorption tower, cooler and circulating pump, the text
Family name's pipe is installed on the air inlet of circulating slot, and Venturi tube is connected to by pipeline with head tank, is accommodated and is used in the circulating slot
The absorbent of volatile organic matter is absorbed, the absorption tower is connected to the exhaust outlet of circulating slot, is equipped with and is used in the absorption tower
The spray equipment of spray-absorption agent, the absorbent outlet of the circulating slot is by pipeline successively through circulating pump and cooler and Wen
The entrance of pipe and the spray liquid entrance connection on absorption tower, the exhaust outlet on the absorption tower are connected to by pipeline with filter device；
The organic exhaust gas buffering and internal circulation system include sequentially connected wind turbine and gas holder, and the wind turbine is used for will be pre-
Gas pressurized that treated is sent into gas holder and is stored, and the blower and pipeline is connected to the exhaust outlet of filter device, the gas
Cabinet is for storing vapor in gas and condensation exhaust gas；
The air inlet of the organic exhaust gas combustion system is connected to by pipeline with the exhaust outlet of gas holder.
Preferably, the removing system of the volatile organic matter for coal tar processing process discharge further includes for storing up
It deposits gas and reduces the surge tank of gas pressure fluctuation, one end of the surge tank is connected to by pipeline with the exhaust outlet of gas holder,
The other end is connected to head tank.
Preferably, the removing system of the volatile organic matter for coal tar processing process discharge further includes for dropping
The pressure reducing valve of low gas holder gas pressure be discharged, the pressure reducing valve are installed on the pipeline between gas holder and surge tank.
Preferably, the removing system of the volatile organic matter for coal tar processing process discharge further includes being installed on
Breather valve at the gas outlet of head tank on pipeline, the breather valve suck the storage gas in surge tank when head tank discharges
Body, when head tank is fed, breather valve breathes out exhaust gas outward.
Preferably, the absorption tower can be packed tower or sieve-plate tower, and liquid distribution trough is equipped with close at the tower top on absorption tower.
Preferably, the absorbent is one or more mixtures in naphtalene oil, washing oil, a carbolineum, anthracene oil.
Preferably, the cooler is water cooling equipment.
Preferably, the gas holder is double film gas holders or steel gas holder.
Preferably, the breather valve is mechanical breather valve.
Removing system proposed by the present invention is eliminated using absorption, filtering and the means for condensing triplicity in exhaust gas
Tar heavy constituent, particulate matter and vapor, while organic exhaust gas being carried out twice in Venturi tube and absorption tower with absorbent
Contact, absorbent recycle, and make that this removing system processing cost is low and removal efficiency is high.By the way that cooler is arranged to absorbent
It is cooled down, avoids the raised absorbent of temperature from also becoming source exhaust gas, avoid secondary pollution.Setting gas holder realizes exhaust gas
Buffering before burning makes exhaust gas flow be in more stable range, and exhaust gas flow is avoided to fluctuate the impact to combustion process.It is logical
Setting pressure reducing valve and surge tank are crossed, the portion gas in gas holder can be entered the buffer tank by pressure reducing valve, realize the second of exhaust gas
Secondary buffering, last gas are entered by surge tank in head tank, are realized the interior cycle of exhaust gas, are reduced air and enter head tank,
The concentration of VOCs in system is set to be maintained at zone of reasonableness.
Description of the drawings
Fig. 1 is removing System Preferred embodiments of the present invention for the volatile organic matter of coal tar processing process discharge
Structural schematic diagram.
In figure, 1- head tanks, 2- breather valves, 3- circulating slots, 4- Venturi tubes, the absorption towers 5-, 6- coolers, 7- circulating pumps,
8- filters, 9- wind turbines, 10- gas holders, 11- pressure reducing valves, 12- surge tanks, 13- combustion furnaces.
The purpose of the present invention is realized, the embodiments will be further described with reference to the accompanying drawings for functional characteristics and advantage.
Specific implementation mode
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig.1, Fig. 1 is that removing system of the present invention for the volatile organic matter of coal tar processing process discharge is preferred
The structural schematic diagram of embodiment.
In this preferred embodiment, a kind of removing system of volatile organic matter for coal tar processing process discharge, packet
Include the organic exhaust gas pretreatment system for absorbing volatile organic matter, organic exhaust gas is buffered with internal circulation system and for firing
Burn the organic exhaust gas combustion system of exhaust gas, wherein
Organic exhaust gas pretreatment system includes sequentially connected exhaust gas absorption device（More sets or a set of can be set, and more sets are useless
It is connected in series or in parallel between aspiration receiving apparatus）With the filter device for filtering particulate matter in exhaust gas（Filter device can be arranged
More sets or a set of）, exhaust gas absorption device includes Venturi tube 4, circulating slot 3, absorption tower 5, cooler 6 and circulating pump 7, Venturi tube
4 are installed on the air inlet of circulating slot 3, and Venturi tube 4 is connected to by pipeline with head tank 1, is accommodated in circulating slot 3 for absorbing
The absorbent of volatile organic matter, absorption tower 5 are connected to the exhaust outlet of circulating slot 3, are equipped in absorption tower 5 and are used for spray-absorption agent
Spray equipment, the absorbent outlet of circulating slot 3 by the pipeline successively entrance through circulating pump 7 and cooler 6 and Venturi tube 4 with
And the spray liquid entrance connection on absorption tower 5, the exhaust outlet on absorption tower 5 are connected to by pipeline with filter device；
It includes sequentially connected wind turbine 9 and gas holder 10 that organic exhaust gas, which is buffered with internal circulation system, and being used for will be pretreated
Gas pressurized is sent into gas holder 10 and is stored, and wind turbine 9 is connected to by pipeline with the exhaust outlet of filter device, and gas holder 10 is for storing gas
Vapor in body and condensation exhaust gas；
The air inlet of organic exhaust gas combustion system is connected to by pipeline with the exhaust outlet of gas holder 10.
Organic exhaust gas combustion system includes at least one combustion furnace 13, and organic exhaust gas combustion system makes in organic exhaust gas
VOCs is in high temperature（800~1500℃）Under be converted into CO2And H2O。
Combustion furnace 13 can be the existing tube furnace of coal tar processing process, can also be newly-built incinerator.Combustion furnace
Combustion process can be that incorporation one companion of other fuel burns in 13, can also be direct burning.Gravel is filled in filter device
Particle, zeolite, porous activated carbon or micropore ceramics.Filter device includes at least a coarse filter or fine filter, and thick
The serial or parallel connection of filter and fine filter.
Further, this removing system further includes the surge tank 12 for storing gas and reduction gas pressure fluctuation,
One end of the surge tank 12 is connected to by pipeline with the exhaust outlet of gas holder 10, and the other end is connected to head tank 1.
Further, this removing system further includes for reducing the pressure reducing valve 11 of 10 gas pressure be discharged of gas holder, this subtracts
Pressure valve 11 is installed on the pipeline between gas holder 10 and surge tank 12.
Further, this removing system further includes the breather valve 2 being installed at the gas outlet of head tank 1 on pipeline, breathing
Valve 2 sucks the storage gas in surge tank 12 when head tank 1 discharges, and when head tank 1 is fed, exhalation is useless outward for breather valve 2
Gas.
Specifically, in the present embodiment, absorption tower 5 is packed tower or sieve-plate tower, and liquid is equipped with close at the tower top on absorption tower 5
Distributor.Absorbent can be one or more mixtures in naphtalene oil, washing oil, a carbolineum, anthracene oil（Refer to naphtalene oil, washing oil, an anthracene
Two-phase or multiphase arbitrary mixture in oil, anthracene oil）.Cooler 6 is water cooling equipment.Gas holder 10 is double film gas holders or steel gas
Cabinet.Breather valve 2 is mechanical breather valve.Breather valve 2 can be disk-type mechanical breather valve, can also be spring type mechanical breather valve.
The course of work of this removing system is as follows：Organic exhaust gas in head tank 1 enters Venturi tube 4 from breather valve 2 and inhales
Entering into exhaust gas absorption device, organic exhaust gas in Venturi tube 4 contact for the first time with absorbent, then, organic exhaust gas
By circulating slot 3 from bottom to top by absorption tower 5, and absorbent
Counter current contacting then is carried out with organic exhaust gas from top to bottom, completes the absorption to VOCs heavy constituents in organic exhaust gas
Journey.Then, the organic exhaust gas that absorption tower 5 is discharged enters in filter device, gravel particle, zeolite in filter device, porous
Remaining particulate material in activated carbon or micropore ceramics removal organic exhaust gas（Such as naphthalene dust）, and adsorb the steaming of the water in exhaust gas
Gas.Organic exhaust gas through filter device outflow is pressurizeed to be sent into gas holder 10 by wind turbine 9 and be stored.Gas holder 10 also condenses simultaneously
Vapor in exhaust gas, on the one hand the adjustment effect through pressure reducing valve 11 enters surge tank 12 to the exhaust gas of the exhaust outlet outflow of gas holder 10
In, on the other hand enter in organic exhaust gas combustion system and burns.Exhaust gas in surge tank 12 enters back into head tank 1, with
It realizes the interior cycle of exhaust gas, reduces air and enter head tank 1.
The temperature of absorbent is controlled by cooler 6, its temperature is made to be maintained at zone of reasonableness（40~60℃）, to reach
The nonvolatile purpose of absorbent itself, avoids secondary pollution.Wherein, single to cover the organic of exhaust gas absorption device in the present embodiment
The treating capacity of exhaust gas is in 100 ~ 1500m3In the range of/h, the concentration of VOCs can be in 500 ~ 30000mg/m in exhaust gas3Range, inhale
The flow of agent is received in 10 ~ 150m3/ h, for absorbent replacement frequency at 7 ~ 60 days/time, exhaust gas absorption device takes off tar heavy constituent
Except efficiency is up to 70 ~ 95%.
Filter 8 is 100 ~ 1500m in processing tolerance3Filter efficiency is 95 ~ 99.5% in the range of/h, and can be removed useless
Vapor in gas, removal efficiency are 50 ~ 60%.
Wind turbine 9 pressurizes organic exhaust gas（0.5~3kPa）It is 1000 ~ 5000m to be sent into volume afterwards3Gas holder 10 in store, gas
The condensation efficiency that cabinet 10 condenses vapor in exhaust gas can reach 60 ~ 95%；The pressure of 10 provided gas of gas holder is adjusted in pressure reducing valve 11
Power（0.3~1kPa）；The volume of surge tank 12 is in 50 ~ 500m3In range, a certain amount of organic exhaust gas can be stored；Head tank 1 goes out
When material, breather valve 2（Inlet and outlet pressure is set as 0.1 ~ 0.3kPa）Sucking gas provided by surge tank 12.
In the present embodiment, combustion furnace 13（50~500m3）It can be by organic exhaust gas（100~3000m3/h）At 800 ~ 1500 DEG C
The removal efficiency of completely burned under high temperature, VOCs is less than 10mg/m up to 95 ~ 99.9%, VOCs exit concentrations3, rate of discharge is low
In 0.1kg/h.
The removing system that the present embodiment proposes is eliminated using absorption, filtering and the means for condensing triplicity in exhaust gas
Tar heavy constituent, particulate matter and vapor, while by organic exhaust gas in Venturi tube 4 and absorption tower 5 with absorbent carry out
It contacts twice, absorbent recycles, and processing cost is low and removal efficiency is high.Absorbent is carried out by the way that cooler 6 is arranged
It is cooling, it avoids the raised absorbent of temperature from also becoming source exhaust gas, avoids secondary pollution.Setting gas holder 10 realizes exhaust gas combustion
Buffering before burning makes exhaust gas flow be in more stable range, and exhaust gas flow is avoided to fluctuate the impact to combustion process.Pass through
Pressure reducing valve 11 and surge tank 12 are set, and the portion gas in gas holder 10 can pass through pressure reducing valve 11 and enter in surge tank 12, realize useless
Second of buffering of gas, last gas are entered in head tank 1 by surge tank 12, realize the interior cycle of exhaust gas, reduce air
Into head tank 1, the concentration of VOCs in system is made to be maintained at zone of reasonableness.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (6)
1. a kind of removing system of volatile organic matter for coal tar processing process discharge, which is characterized in that including being used for
It absorbs organic exhaust gas pretreatment system, organic exhaust gas buffering and the internal circulation system of volatile organic matter and is used for burning waste gas
Organic exhaust gas combustion system, wherein
The organic exhaust gas pretreatment system includes sequentially connected exhaust gas absorption device and for filtering particulate matter in exhaust gas
Filter device, the exhaust gas absorption device include Venturi tube, circulating slot, absorption tower, cooler and circulating pump, the Venturi tube
It is installed on the air inlet of circulating slot, Venturi tube is connected to by pipeline with head tank, is accommodated in the circulating slot for absorbing
The absorbent of volatile organic matter, the absorption tower are connected to the exhaust outlet of circulating slot, are equipped in the absorption tower for spraying
The spray equipment of absorbent, the absorbent outlet of the circulating slot is by pipeline successively through circulating pump and cooler and Venturi tube
Entrance and the connection of the spray liquid entrance on absorption tower, the exhaust outlet on the absorption tower are connected to by pipeline with filter device；
The organic exhaust gas buffering and internal circulation system include sequentially connected wind turbine and gas holder, and the wind turbine will be for that will pre-process
Gas pressurized afterwards is sent into gas holder and is stored, and the blower and pipeline is connected to the exhaust outlet of filter device, and the gas holder is used
The vapor in storage gas and condensation exhaust gas；
The air inlet of the organic exhaust gas combustion system is connected to by pipeline with the exhaust outlet of gas holder；
The removing system of the volatile organic matter for coal tar processing process discharge further include for store gas and
The surge tank of gas pressure fluctuation is reduced, one end of the surge tank is connected to by pipeline with the exhaust outlet of gas holder, the other end and original
Batch can is connected to；
The removing system of the volatile organic matter for coal tar processing process discharge further includes being arranged for reducing gas holder
Go out the pressure reducing valve of gas pressure, which is installed on the pipeline between gas holder and surge tank；
The removing system of the volatile organic matter for coal tar processing process discharge further includes being installed on going out for head tank
Breather valve at gas port on pipeline, the breather valve suck the storage gas in surge tank, in head tank when head tank discharges
When charging, breather valve breathes out exhaust gas outward.
2. the removing system for the volatile organic matter of coal tar processing process discharge as described in claim 1, feature
It is, the absorption tower can be packed tower or sieve-plate tower, and liquid distribution trough is equipped with close at the tower top on absorption tower.
3. the removing system for the volatile organic matter of coal tar processing process discharge as described in claim 1, feature
It is, the absorbent is one or more mixtures in naphtalene oil, washing oil, a carbolineum, anthracene oil.
4. the removing system for the volatile organic matter of coal tar processing process discharge as described in claim 1, feature
It is, the cooler is water cooling equipment.
5. the removing system for the volatile organic matter of coal tar processing process discharge as described in claim 1, feature
It is, the gas holder is double film gas holders or steel gas holder.
6. the volatile organic matter for coal tar processing process discharge as described in any one of claim 1 to 5 is de-
Except system, which is characterized in that the breather valve is mechanical breather valve.
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| CN201610129852.XA CN105709569B (en) | 2016-03-08 | 2016-03-08 | The removing system of volatile organic matter for coal tar processing process discharge |
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| CN201610129852.XA CN105709569B (en) | 2016-03-08 | 2016-03-08 | The removing system of volatile organic matter for coal tar processing process discharge |
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| CN113069893B (en) * | 2021-03-31 | 2022-12-09 | 中钢集团鞍山热能研究院有限公司 | Treatment system and process suitable for Volatile Organic Compounds (VOCS) of tar storage tank |
| CN113694697B (en) * | 2021-08-31 | 2022-05-24 | 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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