CN105854503A - Treatment method of VOCs waste gases by internal circulation without external discharge - Google Patents
Treatment method of VOCs waste gases by internal circulation without external discharge Download PDFInfo
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- CN105854503A CN105854503A CN201610329740.9A CN201610329740A CN105854503A CN 105854503 A CN105854503 A CN 105854503A CN 201610329740 A CN201610329740 A CN 201610329740A CN 105854503 A CN105854503 A CN 105854503A
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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
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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
- B01D53/002—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 condensation
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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
- B01D53/04—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 with stationary adsorbents
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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
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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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
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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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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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
- B01D53/84—Biological processes
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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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- 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
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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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- Treating Waste Gases (AREA)
Abstract
The invention relates to a treatment method of VOCs waste gases by internal circulation without external discharge. The method comprises the following steps: treating organic matters, namely carrying out organic matter treatment on waste gases generated by VOCs waste gas sources, wherein the organic matter treatment adopts one or a combination of more of an assimilation recycling method, an adsorption recycling method, a condensation recycling method, an incineration method, a catalytic incineration method, a plasma method and a biological method to remove VOCs in the waste gases; recycling exhaust gases, namely returning the waste gases subjected to the organic matter treatment to the VOCs waste gas sources. With the adoption of the treatment method of VOCs waste gases by the internal circulation without the external discharge, zero discharge of the VOCs waste gases is realized, the technical problem of the zero discharge of the VOCs waste gases which is desired to be solved but cannot be solved by environmental protection equipment manufacturing enterprises over the years is overcome, and emission pollution of the VOCs waste gases to the environment is completely eliminated; the whole treatment process is simple and easy to operate and high in treatment efficiency, requires less equipment, has low energy consumption of the equipment, well meets requirements of modern enterprises on energy saving and emission reduction, improves requirements of production benefits and has great significance on saving resources and reducing costs.
Description
This case is with filing date 2014-07-02, Application No. 201410311818.5, entitled " one
VOCs waste gas processing method " patent of invention be the divisional application that female case is carried out.
Technical field
The present invention relates to environment protection treating technical field, the not outer row of circulation in a kind of VOCs waste gas
Processing method.
Background technology
It is known that PM2.5 (fine particle), haze weather are on the impact of the life of the people and health day by day
Seriously, and VOCs (VOC) be make PM2.5 concentration abnormality main composition factor it
One, the total release of current industrial VOCs has reached the level of more than 2,000 ten thousand tons/year.Respectively
Kind use the occasion of organic solvent, as sprayed paint, printing, metal degreasing and defat, binding agent, pharmacy, mould
The processing places such as material, rubber, oil, VOC (being called for short VOCs) is all polluting sky
Gas.People by various removal volatile solvents (as condensation method, absorption method, absorption process, combustion method,
Bioanalysis, membrane separation process, plasma method, photocatalytic oxidation) in pollution control technology, although processing
System and method is constantly updated, and clearance or the response rate improve constantly (method having is up to more than 98%), but
Be constantly present the discharge of remaining VOCs, be more can not qualified discharge, the dirty gas disposal method having is even
Also can produce secondary pollution.Along with the further of air contaminant treatment supervision is strengthened by government, various places,
The discharge standard of every profession and trade improves further, makes the processing limit of existing processing system and method be difficult in adapt to
The discharge standard requirement improved constantly.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the technical problem to be solved is to provide one can
Realize the outer processing method arranged of circulation in the VOCs waste gas of VOCs zero waste gas emission.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
The processing method of the not outer row of circulation in a kind of VOCs waste gas, including:
Organic substance processes step: the waste gas that VOCs exhaust gas source produces is carried out Organic substance process, described organic
Thing be processed as use absorb absorption method, absorption absorption method, condensation absorption method, burning method, catalytic burning method,
The combined method of one or more in plasma method and bioanalysis removes the VOCs in removing exhaust gas；
Tail gas recycle step: the waste gas after being processed by Organic substance returns VOCs exhaust gas source.
The beneficial effects of the present invention is:
Achieve the zero-emission of VOCs waste gas, overcome equipment manufacture of environmental protection enterprise for many years want solve and
The technical barrier of unsolved VOCs zero waste gas emission, completely eliminates the VOCs waste gas row to environment
Put pollution；Whole processing procedure is simple to operation, treatment effeciency is high, equipment needed thereby is few, and equipment energy consumption is low,
Well meet modern enterprise to energy-saving and emission-reduction, improve productivity effect requirement, reduce into economizing on resources
Originally it is significant.
Accompanying drawing explanation
Fig. 1 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 1.
Fig. 2 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 2.
Fig. 3 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 4.
Fig. 4 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 5.
Fig. 5 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 6.
Fig. 6 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 7.
Fig. 7 show the structure flow chart of the VOCs exhaust treatment system of the embodiment of the present invention 8.
Label declaration:
1-paint mist treatment device；2-organic matter treating apparatus；3-blower fan；4-tail gas recycle pipeline；
5-VOCs exhaust gas source；6-waste residue collection device；7-organic solvent collecting device；8-compensated with air fills
Put；9-air quality adjusting means；10-the second blower fan；11-defecator；12-chiller.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with
Embodiment also coordinates accompanying drawing to be explained in detail.
The design of most critical of the present invention is: by the waste gas that VOCs exhaust gas source produced at Organic substance
Reason, removes or reclaims most of VOCs in VOCs waste gas, then VOCs content will be greatly reduced
After process, (compared with the waste gas that VOCs exhaust gas source produces, VOCs content contained in this tail gas can for tail gas
Ignoring, this tail gas can be considered fresh air) return to VOCs exhaust gas source and be replaced in exhaust gas source
High-concentration waste gas, the high-concentration waste gas after replacement proceed remove VOCs processs so that it is holding waste gas
The exhaust gas concentration of source region raises the most further, makes VOCs waste gas the most outwardly environmental emission, thus real
The zero-emission of existing VOCs waste gas, after thorough Processing for removing still the discharge of the VOCs waste gas of residual minim to ring
The pollution that border is brought, whole processing procedure is simple to operation, treatment effeciency is high, equipment needed thereby is few, equipment energy
Consume low, well meet modern enterprise to energy-saving and emission-reduction, improve productivity effect requirement, to economizing on resources
Reduce cost to be significant.
Embodiment 1
Refer to shown in Fig. 1, the VOCs exhaust treatment system of the present embodiment 1, including for removing VOCs
Organic matter treating apparatus 2, blower fan 3 and tail gas recycle pipeline 4, described organic matter treating apparatus 2 is
Existing absorption absorption method, absorption absorption method, condensation absorption method, burning method, catalytic burning method, plasma
The combination of the one or more of which device that method or bioanalysis are used.
Described organic matter treating apparatus 2 and tail gas recycle pipeline 4 are sequentially connected with, described organic matter treating apparatus 2
Inlet end and the outlet side of tail gas recycle pipeline 4 be connected with VOCs exhaust gas source 5 respectively, described VOCs
Exhaust gas source 5, organic matter treating apparatus 2 and tail gas recycle pipeline 4 form a closed loop (waste gas circulation
System), described blower fan 3 is arranged on described closed loop.
Described VOCs exhaust gas source 5, can be equipment or the place arbitrarily producing VOCs waste gas, such as spray paint
The equipment such as room, drying room, canned workshop, cloth coating, artificial leather coating, adhesive article gluing, coating,
Print, reel off raw silk from cocoons, the place such as the workshop at the equipment production line such as calendering and place thereof.It is to say, this
Bright provided VOCs exhaust treatment system and processing method, can apply to any generation VOCs waste gas
Equipment or place.In processing procedure, produced by VOCs exhaust gas source 5, waste gas is in closed loop
It is circulated flowing, and reduces and be discharged in external environment.In VOCs exhaust gas source 5, pollutant can also be set
Pretreatment unit, such as particulate matter expansion chamber, outlet port defecator, water screen apparatus, water shower device etc.
For removing the facility of exhaust emission, and the regulation waste gas such as chiller, heater is more convenient for follow-up
The facility processed.
Described blower fan 3 can arrange one or more, as long as the position of setting is on closed loop.
Continue referring to shown in Fig. 1, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 1
As follows:
1, waste gas VOCs exhaust gas source 5 produced introduces in organic matter treating apparatus 2 by blower fan 3, warp
(include absorbing absorption method, absorption is reclaimed to cross the method such as absorption and sorption or burning of organic matter treating apparatus 2
Method, condensation absorption method, burning method, catalytic burning method, plasma method and bioanalysis) process after, in waste gas
Contained a large amount of VOCs are removed, can be by organic by the organic solvent absorbed or suction type is collected
Solvent collection device 7 carries out reclaiming and subsequent treatment, and described organic solvent collecting device 7 can be that solvent divides
From groove or solvent tank, it is possible to be solvent equipment for purifying；
2, the tail gas after Organic substance processes comprises only the VOCs of trace, useless with what VOCs exhaust gas source produced
Gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, at blower fan 3
Effect under return to VOCs exhaust gas source 5 be circulated replace out in exhaust gas source high concentration VOCS give up
Gas.
Knowable to foregoing description, the beneficial effects of the present invention is: achieve the zero-emission of VOCs waste gas,
Solve the discharge standard requirement that existing waste gas pollution control and treatment technology is difficult to reach to improve constantly, completely eliminate VOCs
The waste gas exhaust emission to environment；Whole processing procedure is simple to operation, treatment effeciency is high, equipment needed thereby is few,
Equipment energy consumption is low, well meet modern enterprise to energy-saving and emission-reduction, improve productivity effect requirement, to joint
About resource minimizing cost is significant.
Further, according to each position requirement to the air-inlet condition such as wind speed, wind direction in VOCs exhaust gas source 5,
Such as paint spray booth requires that the air inlet of distribution plenum can not affect jet velocity and the jet direction of spray gun, in order to avoid impact
Lacquered surface film thickness uniform, the present embodiment 1 also can be arranged on the outlet side of tail gas recycle pipeline 4
There are air-distribution device, the purpose of described air-distribution device, are to make tail gas pass through cloth when accessing VOCs exhaust gas source 5
The wind speed of wind apparatus distribution each position and airflow direction, in meeting VOCs exhaust gas source 5, each position is to air intake bar
The requirement that part and waste gas are replaced.
Further, owing to gas exists certain negative pressuren zone or zone of positive pressure in whole exhaust treatment system,
Gas volume change in order to cause the condition such as pressure, temperature compensates, and the present embodiment 1 is at Organic substance
It is additionally provided with air compensating device 8, described air between outlet side and the VOCs exhaust gas source 5 of processing means 2
Compensation device 8 is by being passed through or discharging a certain amount of air in closed loop, to alleviate or to eliminate whole
The problem causing changes in air volume because of negative pressure or malleation present in individual exhaust treatment system, it is ensured that system is just
Often stably run.
Further, the different (ratio of prescription to air due to different production technologies or the equipment of production
As paint spray booth and drying room have certain requirement to the temperature and humidity of air), the process side of organic matter treating apparatus
The boiling point of method different (such as processing method is absorption and sorption or burning) and organic solvent is not equal, for
Acquisition more preferable exhaust-gas treatment effect, improves the operation stability of whole system and meets various processes
Or the requirement of the equipment of production, VOCs exhaust treatment system and processing method have also been made further by the present invention
Improve, below on the basis of embodiment 1, continue to enumerate embodiment and be described as follows:
Embodiment 2
When organic matter treating apparatus 2 is the absorbing recovery device including adsorption tanks, method for treating organic material is
During absorption VOCs:
Refer to shown in Fig. 2, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 2
System, also includes adsorbing the adsorption system of absorption method, desorption system, condenser system and piece-rate system, and second
The adsorption tanks dehumidifying of blower fan 10, cooling system.
Described second blower fan 10 is connected with the adsorption tanks of organic matter treating apparatus 2, and adsorption tanks offer cooling
Dehumidifying passage, one end of described cooling and dehumidifying passage is connected with the second blower fan 10, described cooling and dehumidifying passage
The other end is connected with the external world.
Continue referring to shown in Fig. 2, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 2
As follows:
1, waste gas VOCs exhaust gas source 5 produced introduces in organic matter treating apparatus 2 by blower fan 3, warp
After crossing the adsorption treatment of organic matter treating apparatus 2, VOCs contained in waste gas is removed in a large number, by inhaling
The organic solvent that subsidiary formula formula is collected can be reclaimed by organic solvent collecting device 7, described organic solvent
Collection device 7 can be solvent separating tank, solvent tank or solvent purifying device；
In Organic substance processing procedure, owing to adsorption tanks temperature after being desorbed is higher, and there is water steaming
Vapour, if the equipment of production (VOCs exhaust gas source 5) is adversely affected by temperature and humidity, then needs to lead to
Crossing the second blower fan 10 and adsorption tanks are carried out cooling and dehumidifying, the gas after cooling and dehumidifying is directly arranged in the air, does not returns
Flow in VOCs exhaust gas source 5.
2, the tail gas after Organic substance processes comprises only the VOCs of trace, with VOCs exhaust gas source 5 generation
Waste gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, at blower fan 3
Effect under return to the high-concentration waste gas that VOCs exhaust gas source 5 is replaced in exhaust gas source, after replacement
Discharge into row outside high-concentration waste gas and go VOCs process so that it is the exhaust gas concentration keeping exhaust gas source region is further
Raise.
Embodiment 3
When organic matter treating apparatus 2 is the organic matter treating apparatus 2 for absorbing or burn VOCs, Organic substance
When processing method is for absorbing or burning VOCs:
Can use VOCs exhaust treatment system as shown in Figure 1, processing method can refer to described in embodiment 1.
This embodiment 3 is with the difference of embodiment 2, does not include the second blower fan 10.
Embodiment 4
When VOCs exhaust gas source 5 has particular/special requirement or organic matter treating apparatus 2 sky out to the quality of air
When makings amount does not adapt to exhaust gas source 5 to api request:
Refer to shown in Fig. 3, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 4
System, also includes air quality adjusting means 9.
Described air quality adjusting means 9 is arranged on outlet side and the VOCs waste gas of organic matter treating apparatus 2
Between the inlet end in source 5, described air quality adjusting means 9 can be according to VOCs exhaust gas source 5 to air matter
The specific requirement of amount is selected, and the temperature and humidity of air is required, then by such as VOCs exhaust gas source 5
Air quality adjusting means 9 can include air temperature modification unit and/or air humidity regulation unit, Jing Guokong
The regulation of makings quantity regulating device 9, makes the gas of entrance VOCs exhaust gas source 5 meet VOCs exhaust gas source 5
Prescription to air.
Continue referring to shown in Fig. 3, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 4
As follows:
1, waste gas VOCs exhaust gas source 5 produced introduces in organic matter treating apparatus 2 by blower fan 3, warp
After crossing absorption and sorption or the burning disposal of organic matter treating apparatus 2, a large amount of VOCs quilts contained in waste gas
Remove, can be carried out by organic solvent collecting device 7 by the organic solvent absorbed or suction type is collected
Reclaiming, described organic solvent collecting device 7 can be solvent separating tank, solvent tank or solvent equipment for purifying；
2, the tail gas after Organic substance processes comprises only the VOCs of trace, with VOCs exhaust gas source 5 generation
Waste gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, Jing Guokong
After the regulation of makings quantity regulating device 9, under the effect of blower fan 3, return to VOCs exhaust gas source 5 carry out
Recycling.
Embodiment 5
When in the waste gas that VOCs exhaust gas source 5 produces containing coating cloud, dust, mist of oil or aerosol, than
When being paint spray booth such as VOCs exhaust gas source 5:
Refer to shown in Fig. 4, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 5
System, also includes that paint mist treatment device 1, described paint mist treatment device 1 are arranged on described VOCs exhaust gas source 5
Between the inlet end of outlet side and organic matter treating apparatus 2.
Refer to shown in Fig. 4, in the VOCs waste gas of the present embodiment 5, the processing method of the not outer row of circulation is as follows:
1, waste gas VOCs exhaust gas source 5 produced paints in introducing paint mist treatment device 1 by blower fan 3
Mist, dust, mist of oil, the removal of aerosol process, and the waste residue obtained after process can collect dress by waste residue
Put 6 to reclaim；
2, the waste gas after processing enters in organic matter treating apparatus 2, through Organic substance under the effect of blower fan 3
After the absorption and sorption of processing means 2 or burning disposal, VOCs contained in waste gas is removed in a large number, logical
Cross absorption or the organic solvent collected of suction type can be reclaimed by organic solvent collecting device 7, institute
Stating organic solvent collecting device 7 can be solvent separating tank, solvent tank or solvent equipment for purifying；
3, the tail gas after Organic substance processes comprises only the VOCs of trace, useless with what VOCs exhaust gas source produced
Gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, at blower fan 3
Effect under return to the high-concentration waste gas that VOCs exhaust gas source 5 is replaced in exhaust gas source, after replacement
Discharge into row outside high-concentration waste gas and go VOCs process so that it is the exhaust gas concentration keeping exhaust gas source region is further
Raise.
Described paint mist treatment device 1 can be separately provided, it is also possible to is incorporated in organic matter treating apparatus 2,
As long as allowing waste gas process i.e. through Organic substance again after first passing through the process of coating cloud, dust, mist of oil or aerosol
Can.
Embodiment 6
The EGT produced when VOCs exhaust gas source 5 is higher, if VOCs exhaust gas source 5 is drying room, baking oven
Time:
Refer to shown in Fig. 5, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 6
System, also includes that defecator 11 and chiller 12, described defecator 11 and chiller 12 are arranged on
Between outlet side and the inlet end of organic matter treating apparatus 2 of described VOCs exhaust gas source 5.
Continue referring to shown in Fig. 5, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 6
As follows:
1, waste gas VOCs exhaust gas source 5 produced filters in introducing defecator 11 by blower fan 3,
Carry out cooling down (this road refrigerating work procedure need not be passed through for low temperature waste gas) subsequently into chiller 11；
2, the waste gas after supercooling introduces in organic matter treating apparatus 2, through Organic substance by blower fan 3 again
After the absorption of processing means 2 or absorption, VOCs contained in waste gas is removed in a large number, by absorbing or inhaling
The organic solvent that subsidiary formula formula is collected can be reclaimed by organic solvent collecting device 7, described organic solvent
Collection device 7 can be solvent separating tank, solvent tank or solvent equipment for purifying；
3, the tail gas after Organic substance processes comprises only the VOCs of trace, useless with what VOCs exhaust gas source produced
Gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, at blower fan 3
Effect under return to VOCs exhaust gas source 5 and reuse.
Above-described embodiment 2 or 3 and embodiment 4～6 can combination in any, to adapt to the VOCs under different situations
Exhaust-gas treatment.It is such as adsorption tanks when organic matter treating apparatus 2, and the matter that VOCs exhaust gas source 5 is to air
Amount is when having particular/special requirement, and described VOCs exhaust treatment system, on the basis of embodiment 1, includes the simultaneously
Two blower fans 10 and air quality adjusting means 9, in described VOCs waste gas, the processing method of the outer row of circulation is same
Time include the cooling and dehumidifying step to adsorption tanks and air quality regulating step.In order to be illustrated more clearly that this group
Conjunction situation, is described in detail for embodiment 7 and embodiment 8 the most again, and other more combined situation can
With reference in like manner.
Embodiment 7
When organic matter treating apparatus 2 is the absorbing recovery device including adsorption tanks, and VOCs exhaust gas source 5
When the quality of air is had particular/special requirement:
Refer to shown in Fig. 6, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 7
System, also includes the second blower fan 10 and air quality adjusting means 9.
Described second blower fan 10 is connected with the adsorption tanks of organic matter treating apparatus 2, and adsorption tanks offer cooling
Dehumidifying passage, one end of described cooling and dehumidifying passage is connected with the second blower fan 10, described cooling and dehumidifying passage
The other end is connected with the external world.
Described air quality adjusting means 9 is arranged on outlet side and the VOCs waste gas of organic matter treating apparatus 2
Between source 5, described air quality adjusting means 9 can be according to concrete to air quality of VOCs exhaust gas source 5
Requirement is selected, and the temperature and humidity of air is required by such as VOCs exhaust gas source 5, then air quality
Adjusting means 9 can include air temperature modification unit and/or air humidity regulation unit, adjusts through air quality
The regulation of regulating device 9, makes the gas of entrance VOCs exhaust gas source 5 meet VOCs exhaust gas source 5 to air
Prescription.
Continue referring to shown in Fig. 6, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 7
As follows:
1, waste gas VOCs exhaust gas source 5 produced introduces in organic matter treating apparatus 2 by blower fan 3, warp
After crossing the adsorption treatment of organic matter treating apparatus 2, a large amount of VOCs contained in waste gas are removed, by inhaling
The organic solvent that subsidiary formula formula is collected can be reclaimed by organic solvent collecting device 7, described organic solvent
Collection device 7 can be solvent separating tank, solvent tank or solvent equipment for purifying；
In Organic substance processing procedure, owing to adsorption tanks temperature in tank after being desorbed is higher, need and
Time cooling, and there is water vapour, water vapour enters VOCs exhaust gas source 5 will affect its working environment, cause
Unfavorable, it is therefore desirable in the cooling and dehumidifying passage of adsorption tanks, to be passed through fresh air by the second blower fan 10, right
Adsorption tanks carry out cooling down and take away the water vapour in adsorption tanks, and the gas after cooling and dehumidifying is directly arranged in the air,
It is not back in VOCs exhaust gas source 5.
2, the tail gas after Organic substance processes comprises only the VOCs of trace, with VOCs exhaust gas source 5 generation
Waste gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, Jing Guokong
After the regulation of makings quantity regulating device 9, under the effect of blower fan 3, return to VOCs exhaust gas source 5 carry out
Recycling.
Embodiment 8
When containing coating cloud in the waste gas that VOCs exhaust gas source 5 produces, organic matter treating apparatus 2 is for including suction
The absorbing recovery device of attached tank, and when VOCs exhaust gas source 5 has particular/special requirement to the quality of air:
Refer to shown in Fig. 7, on the basis of embodiment 1, the VOCs exhaust-gas treatment system of the present embodiment 5
System, also includes paint mist treatment device the 1, second blower fan 10 and air quality adjusting means 9.
Described paint mist treatment device 1 is arranged on the outlet side of described VOCs exhaust gas source 5 and processes dress with Organic substance
Put between the inlet end of 2.
Described second blower fan 10 is connected with the adsorption tanks of organic matter treating apparatus 2, and adsorption tanks offer cooling
Dehumidifying passage, one end of described cooling and dehumidifying passage is connected with the second blower fan 10, described cooling and dehumidifying passage
The other end is connected with the external world.
Described air quality adjusting means 9 is arranged on outlet side and the VOCs waste gas of organic matter treating apparatus 2
Between source 5, described air quality adjusting means 9 can be according to concrete to air quality of VOCs exhaust gas source 5
Requirement is selected, and the temperature and humidity of air is required by such as VOCs exhaust gas source 5, then air quality
Adjusting means 9 can include air temperature modification unit and/or air humidity regulation unit, adjusts through air quality
The regulation of regulating device 9, makes the gas of entrance VOCs exhaust gas source 5 meet VOCs exhaust gas source 5 to air
Prescription.
Continue referring to shown in Fig. 7, the processing method of the not outer row of circulation in the VOCs waste gas of the present embodiment 8
As follows:
1, waste gas VOCs exhaust gas source 5 produced paints in introducing paint mist treatment device 1 by blower fan 3
Mist processes, and the waste residue obtained after paint mist treatment can be reclaimed by waste residue collection device 6；
2, the waste gas after paint mist treatment enters in organic matter treating apparatus 2 under the effect of blower fan 3, Jing Guoyou
After the adsorption treatment of machine thing processing means 2, a large amount of VOCs contained in waste gas are removed, by absorption side
The organic solvent that formula is collected can be reclaimed by organic solvent collecting device 7, and described organic solvent is collected
Device 7 can be solvent separating tank, solvent tank or solvent equipment for purifying；
In Organic substance processing procedure, owing to adsorption tanks temperature in tank after being desorbed is higher, need and
Time cooling, and there is water vapour, water vapour enters VOCs exhaust gas source 5 will affect its working environment, cause
Unfavorable, it is therefore desirable in the cooling and dehumidifying passage of adsorption tanks, to be passed through fresh air by the second blower fan 10, right
Adsorption tanks carry out cooling down and take away the water vapour in adsorption tanks, and the gas after cooling and dehumidifying is directly arranged in the air,
It is not back in VOCs exhaust gas source 5.
3, the tail gas after Organic substance processes comprises only the VOCs of trace, useless with what VOCs exhaust gas source produced
Gas is compared, and VOCs content contained in this tail gas is negligible, can be considered fresh air, through air
After the regulation of quality regulator 9, under the effect of blower fan 3, return to VOCs exhaust gas source 5 carry out weight
Multiple utilization.
In sum, the VOCs exhaust treatment system of present invention offer and processing method, not only achieve VOCs
The zero-emission of waste gas, completely eliminates the VOCs waste gas exhaust emission to environment, meets modern enterprise pair
Energy-saving and emission-reduction, the requirement of raising productivity effect, and the VOCs exhaust-gas treatment under being applicable to different situations,
Can obtain more preferable exhaust-gas treatment effect, the operation stability and the satisfied different VOCs that improve whole system give up
The job requirement of source of the gas, possesses market application foreground widely.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every profit
The equivalent structure made by description of the invention and accompanying drawing content or equivalence flow process conversion, or directly or indirectly transport
It is used in other relevant technical fields, is the most in like manner included in the scope of patent protection of the present invention.
Claims (5)
1. the processing method of the not outer row of circulation in a VOCs waste gas, it is characterised in that including:
Paint mist treatment step, described paint mist treatment step be by VOCs exhaust gas source produce waste gas carry out coating cloud,
The removal of dust, mist of oil or aerosol processes；
Organic substance processes step: the waste gas that VOCs exhaust gas source produces is carried out Organic substance process, described organic
Thing is processed as using absorption absorption method to remove the VOCs in removing exhaust gas；
Compensated with air step, described compensated with air step is for being passed through or pass-out is a certain amount of in scheme for exhaust gas circulation system
Air；
Air quality regulating step, described air quality regulating step is the temperature to gas and/or humidity is carried out
Regulation；
Tail gas recycle step: the waste gas after being processed by Organic substance returns VOCs exhaust gas source.
The processing method of the not outer row of circulation in VOCs waste gas the most according to claim 1, its feature exists
In: the waste residue obtained in described paint mist treatment step carries out reclaiming or deliver to treating stations and processes.
The processing method of the not outer row of circulation in VOCs waste gas the most according to claim 1, its feature exists
In: before described Organic substance processes step, also including filtration step, described filtration step is for give up VOCs
The waste gas that source of the gas produces carries out filtration treatment.
The processing method of the not outer row of circulation in VOCs waste gas the most according to claim 1, its feature exists
In: before described Organic substance processes step, also including cooling step, described cooling step is for carry out waste gas
Cooling.
The processing method of the not outer row of circulation in VOCs waste gas the most according to claim 1, its feature exists
In: described Organic substance processes the organic solvent obtained in step and recycles.
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| CN201610329740.9A CN105854503A (en) | 2014-07-02 | 2014-07-02 | Treatment method of VOCs waste gases by internal circulation without external discharge |
| CN201410311818.5A CN104083988B (en) | 2014-07-02 | 2014-07-02 | VOCs waste gas treatment method |
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| CN111569610A (en) * | 2020-04-26 | 2020-08-25 | 浙江中科玖源新材料有限公司 | Polyimide film production waste gas treatment process without discharging waste water and waste liquid |
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| CN104436979B (en) * | 2014-10-11 | 2016-08-24 | 福建省天朗环保设备有限公司 | A kind of VOCs emission-control equipment |
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| CN104083988A (en) | 2014-10-08 |
| CN105854504A (en) | 2016-08-17 |
| CN104083988B (en) | 2016-04-27 |
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