CN109745830A - A kind of method and device of cooperation-removal VOCs - Google Patents
A kind of method and device of cooperation-removal VOCs Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 42
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- 230000008569 process Effects 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000002912 waste gas Substances 0.000 claims abstract description 5
- -1 compound small molecule Chemical class 0.000 claims abstract description 4
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Classifications
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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 present invention provides the method and apparatus of cooperation-removal VOCs a kind of, for handling organic exhaust gas, it is characterised in that: organic exhaust gas is successively cleaned discharge after washed technique, plasma process and absorbing process；Wherein, washing process, component and non-gaseous material for going in removing exhaust gas that agent absorption can be absorbed；Plasma process, for by the compound small molecule in exhaust gas；Absorbing process, for adsorb/micro-molecular gas is concentrated.The technique and device of cooperation-removal VOCs, the waste gas pollution control and treatment suitable for low concentration Wind Volume containing VOCs, process flow is simple, and easy to operate, occupied area is small, and energy demand is low, and scale of investment is small, and waste gas pollution control and treatment is high-efficient, and multiple pollutant is suitble to administer.
Description
Technical field
The invention belongs to resource and environments to protect field, and in particular, to a kind of volatile organic contaminant VOCs's goes
Except purification system, particularly, it is related to the technique and device of a kind of cooperation-removal VOCs.
Background technique
Volatile organic compounds (volatile organic compounds, VOCs) refers to boiling point at 50 DEG C and 260
Between DEG C, (20 DEG C and 1 atmospheric pressure) saturated vapour pressure is more than the organic compound of 133.32Pa at standard temperature and pressure
Object, generally existing in air and complicated component, seriously threatens human health.In recent years, the problem that the contaminated zone VOCs is come
The problem of having become puzzlement China's Environmental Health, is increasingly subject to research and concern.
Currently, the purification techniques of VOCs have adsorption technology, washing technology, condensation technology, membrane separation technique, combustion technology,
Photo chemistry technology, plasma technology and biotechnology etc..Various Treatment process are adapted to different VOCs pollution conditions, condense,
UF membrane and combustion technology are polluted suitable for high concentration VOCs, very faint to the regulation effect of low concentration Wind Volume pollution, and
Investment is big, the period is long and operating cost is high, is easy to produce secondary pollution.Pollution for low concentration VOCs is more suitable for using washing
It washs, the Treatment process such as plasma and absorption.But washing or plasma technique improvement VOCs, which is used alone, to be produced
Raw secondary pollution generates VOCs or byproduct of reaction again, and adsorption technology is not suitable for aqueous or giving up containing particulate matter then
Gas.
Summary of the invention
The present invention aims to overcome the above drawbacks, asks involved in the VOCs pollution control process for solving low concentration Wind Volume
Topic, provides the technique and device of a kind of cooperation-removal VOCs, by washing, plasma and adsorption technology series operation, collaboration
Running, which reaches, reduces VOCs pollution, innocuous gas is translated into, while obtaining pure air, moreover it is possible to be suitable for all kinds of dirts
Contaminate the processing of exhaust gas.
The present invention provides the methods of cooperation-removal VOCs a kind of, for handling organic exhaust gas, it is characterised in that: organic
Exhaust gas is successively cleaned discharge after washed technique, plasma process and absorbing process；
Wherein, above-mentioned washing process, component and non-gaseous material for going in removing exhaust gas that agent absorption can be absorbed；
Above-mentioned plasma process, for by the compound small molecule in exhaust gas；
Above-mentioned absorbing process, for adsorb/micro-molecular gas is concentrated.
In addition, the present invention also provides the corollary apparatus of the application above method, the device of cooperation-removal VOCs is used for
Handle organic exhaust gas, it is characterised in that: including washing unit, plasma unit and absorbing unit；
Above-mentioned washing unit includes wash mill, and absorbent is equipped in above-mentioned wash mill；The absorbent can be water phase
Adsorbent, or oily phase adsorbent.According to exhaust gas main component, generally uses water to be VOCs soluble easily in water and inhale
Agent is received, generally selects diesel oil, kerosene etc. as absorbent organic exhaust gas not soluble in water；
Above-mentioned plasma unit includes plasma device, and above-mentioned plasma device uses low temperature plasma skill
Art mainly generates a large amount of high energy electron and active particle, oxidation and destruction VOCs macromolecular by corona discharge method, makes
It becomes small molecule；
Above-mentioned absorbing unit includes adsorbent equipment, and adsorbent is equipped in above-mentioned adsorbent equipment；The adsorbent can be particle
The various forms of adsorbents such as shape, powdered or honeycomb coat or are arranged in adsorbent equipment in the form piled up；The suction
Attached dose of main function is to be adsorbed with machine small molecule, can be the various organic or inorganic adsorbent materials such as active carbon.
Wherein, organic exhaust gas is successively purified after washed device, plasma device and adsorbent equipment are handled.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
At least one filler portion, at least one set of sorbent injection portion are equipped in wash mill；
Above-mentioned filler portion is set to the top, lower section or surrounding in sorbent injection portion；
According to the volume of equipment and the needs for handling gas or more comprehensively handling, the filler portion and sorbent injection portion can
Think single layer designs (one sorbent injection portion filler portion top), Multi-layer design (i.e., sorbent injection portion be multilayer
The combination of spray, part or all of is arranged in above or below filler portion, can also wrap filler portion enclosed or half
Enclose the covering of formula) or Spaced design (the i.e., arrangement that sorbent injection portion and filler portion meet each other).
Several spray heads are evenly equipped in above-mentioned sorbent injection portion；The quantity of the spray head can be adjusted according to the needs of use
It is whole；
At least one feed pathway is equipped in above-mentioned sorbent injection portion；According to the needs of processing gas type, to being soluble in
The VOCs of water generally uses water to make absorbent, generally selects the oil-based liquids such as diesel oil, kerosene for organic exhaust gas not soluble in water
As absorbent, it is contemplated that oil is mutually or the absorbent of water tank may be used simultaneously in the exhaust-gas treatment of same stage,
The problem of polluting in order to avoid the switching of liquid source, treatment fluid premix obstacle and its pipeline, can preferably use multi-pass in the present invention program
Road carries out the inputs of different liquids.
Above-mentioned absorbent is entered in sorbent injection portion by feed pathway, and then can be washed by spray head penetrating thereon
It washs in device.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Demister and/or filter device are additionally provided in sorbent injection portion.For eliminating water mist, smog, and the solid/glue that shuts off
The substances such as body cigarette ash, solid/colloidal impurity.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Wash mill further includes waste gas inlet, drainage mechanism, deflector and I sections of processing gas gas outlets；
Above-mentioned air inlet is set to the downside of wash mill；
Above-mentioned drainage mechanism is set to the downside or bottom of wash mill；Be dissolved in the organic mixture of absorbent from this
It is excluded outside wash mill in drainage mechanism；
Above-mentioned deflector is set to the lower section in filler portion and sorbent injection portion, the gas that will be entered by air inlet
Upward water conservancy diversion；The deflector is generally positioned at the outlet port of air inlet；
Above-mentioned I sections of processing gas gas outlet is set to the upside or top of wash mill.Treated, and gas passes through the outlet
Mouth outflow.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Deflector and the angle of wash mill bottom surface are 15-60 °；I.e., the deflector is inclined-plane or the inclined-plane knot with curvature
Structure, so as to preferably guide moving upwards for air-flow；
Above-mentioned deflector is equipped with current equalizing structure.The Jun Liu mechanism generally has multiple disposed in parallel or non-rule
The reflecting slant of setting is restrained, or is the surface of out-of-flatness, the effect for the air-flow impacted on deflector to spread out
Fruit.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Adsorbent equipment includes II processing gas air inlet, absorption cavity and purified gas gas outlet；
Wherein, above-mentioned II processing gas air inlet and purified gas gas outlet are set to the two sides of absorption cavity；It can be upper and lower
Two sides, or the left and right sides；
Air flow guiding mechanism and adsorbing mechanism are equipped in above-mentioned adsorbent chamber body；
Said flow deflector is arranged oppositely with II processing gas air inlet；The effect that the gas of entrance is oriented to；
Above-mentioned adsorbing mechanism is arranged oppositely with purified gas gas outlet；
Above-mentioned adsorbing mechanism includes at least one set of adsorbent support construction；
Above-mentioned adsorbent support construction is equipped with adsorbent.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Adsorb the length of cavity: wide: high ratio is 5:1-3:1-3；
The both ends of above-mentioned absorption cavity are chamfering structure.It is generally radially enlarged lead angle in gas feed position
Structure, the position of gas vent are the lead angle structure radially reduced.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Air flow guiding mechanism is equipped with current equalizing structure.
The current equalizing structure is generally through-hole, and for distributing air-flow, which being arranged in parallel in for matrix
On deflector, or staggered inclined hole.
Further, the device of a kind of cooperation-removal VOCs provided by the invention, also have a characteristic that i.e., it is above-mentioned
Drying device is additionally provided between wash mill and plasma device.For the gas flowed out in wash mill to be dried
Effect.
The function and effect of the present invention:
The technique and device of a kind of cooperation-removal VOCs provided by the invention, organic exhaust gas first pass through scrubbing tower elution in advance
After absorption, the organic matter of absorbent can be dissolved in by liquid absorption, scrubbing tower is discharged with liquid, is not readily dissolved in the organic of absorbent
Object and steam go to plasma device from exhaust pipe at the top of scrubbing tower with air-flow, and drier is arranged in the duct and removes steam,
Reduce the influence of humidity plasma processing.Organic exhaust gas enters plasma device, and plasma device corona discharge makes
The plasma that medium generates bombards organic exhaust gas molecule repeatedly at a terrific speed, and activation ionizes, is in cracking exhaust gas each
Kind ingredient opens the chemical bond inside contaminant molecule by the chemical reaction of a series of complex such as oxidation, makes the big of complexity
Molecular contaminants become the safe material of small molecule, reduce the toxic of pollutant.From the gas that plasma device is discharged
Also contain some organic pollutants or small molecule pernicious gas, and type is more, cannot be directly discharged into atmosphere, is filled by absorption
Further adsorbing and removing pernicious gas is set, clean gas is finally obtained, achievees the purpose that purify exhaust gas.
It can be seen that the present invention is a kind of volatile organic matter for unifying washing, plasma and adsorption technology three
The Processing tecchnics and device of VOCs.The technique and device of cooperation-removal VOCs, suitable for low concentration Wind Volume containing the useless of VOCs
Gas is administered, and process flow is simple, and easy to operate, occupied area is small, and energy demand is low, and scale of investment is small, waste gas pollution control and treatment efficiency
Height is suitble to multiple pollutant to administer.
Detailed description of the invention
The structural schematic diagram of Fig. 1, cooperation-removal VOCs device provided in this embodiment；
The left view of the adsorption tower fixed bed of Fig. 2, cooperation-removal VOCs device provided in this embodiment；
The structural schematic diagram of the adsorption tower fixed bed of Fig. 3, cooperation-removal VOCs device provided in this embodiment.
Specific embodiment
As shown in Figure 1, present embodiments provide the technique and device of a kind of system removing VOCs, by scrubbing tower 1, etc. from
Daughter device 2, adsorption tower fixed bed 3 and drier 4.
Wherein, scrubbing tower 1, drier 4, plasma device 2 and adsorption tower fixed bed 3, for along the direction that exhaust gas flows through
Successively joint connection forms, and the unobstructed of gas circuit is realized by piping connection between each device.
Specifically, the scrubbing tower 1 be stand to cylindrical structure, set gradually from bottom to top airflow guiding device 1-2,
Device 1-3, packing layer 1-4, liquid uniform distribution device 1-5 and demister 1-6 are flowed, air-flow air inlet pipe 1-1 and waste liquid are set in bottom
Drain pipe 1-9, top open up net gas exhaust pipe 1-7, and absorbent inlet tube 1-8 is installed on side top；
Wherein, airflow guiding device 1-2 is with cambered inclined plate moulding, and one end is in succession in air-flow air inlet pipe
The gas outlet position of 1-1, the other end is in succession on the tube wall of the scrubbing tower 1 with air-flow air inlet pipe 1-1 opposite direction, thus by gas
While body is drawn, and it is guided by cambered surface to the direction of packing layer 1-4；
The packing layer 1 is the laminated structure of reticular structure or multiple-layer stacked, can also be packed into auxiliary in the packing layer 1
Absorbing material, such as: calcium carbonate, active carbon, molecular sieve.The packing layer can to for absorbent absorb after organic liquid mixture into
Row filtering and purification absorption.
It can be by liquid, on surface of the even distribution device 1-5 towards packing layer 1-4 in liquid uniform distribution device 1-5
Be furnished with several injector heads, by absorbent inlet tube 1-8 inject even distribution device 1-5 in liquid, sprayed out of this injector head and
Out, after being mixed with the organic matter in exhaust gas, after absorbing the organic liquid mixture that organic matter obtains liquid, by its gravity, sink
Extremely it is discharged by drain pipe 1-9.
According to the difference of constituent in exhaust gas, which can dissolve the material of aqueous organic for water etc.,
The material of oily matter can be dissolved for kerosene etc..In order to realize the convenience of operation, absorbent inlet tube 1-8 can
Multiple or multi-channel structure is thought, for loading different absorbents.
It is also equipped with demister above liquid uniform distribution device 1-5, mist caused by liquid spray process can be eliminated
Change effect.
Drier 4 is also installed between scrubbing tower 1 and plasma device 2, by treated the remainder of exhaust gas of scrubbing tower 1,
Enter in drier 4 by the road, to eliminate the liquid or steam carried in gas, plays the effect of dehumidifying.
Exhaust gas after dehumidification treatments, enters plasma device 2 by the road, which makes for cuboid
Type, using lower temperature plasma technology, mainly corona discharge method generates a large amount of high energy electrons and active particle, aoxidizes and broken
Bad VOCs macromolecular, the exhaust gas after drying enters from the top of plasma device 2, after the effect of small molecule, small molecule
Organic compound is flowed out from below, is flowed into adsorption tower fixed bed 3 by the road；
The adsorption tower fixed bed 3 is horizontal positioned fixed-bed structure, sets gradually air inlet pipe 3-1, gas in the horizontal direction
Flow guiding device 3-2, current equalizer 3-3, adsorbent supporting layer 3-4, adsorbent 3-5 and exhaust pipe 3-6；
Such as Fig. 2 and Fig. 3, the length of adsorption tower fixed bed 3: wide: a height of a:b:c=5:2:2, each apex angle use chamfered；
Air flow guiding device 3-2 is the baffle arrangement for being set to the gas outlet air inlet pipe 3-1, which is provided with and several flows
Device 3-3, is generally cavernous structure, being capable of shunt gas；
Adsorbent 3-5 is granular adsorbent or honeycomb sorbent agent in the adsorption tower fixed bed 3, passes through supporting layer 3-4
It is deposited in fixed bed；Adsorbent supporting layer 3-4 is 6 disposed in parallel in the present embodiment, according to exhaust gas air quantity and pollution
Degree changes supporting layer number, can also be other quantity.
The carrying out practically method of the present embodiment device is as follows:
The method of cooperation-removal VOCs provided in this embodiment a kind of, including carrying out washing treatment technique, corona treatment work
Skill and adsorption treatment process, the exhaust gas containing VOCs is handled by scrubbing tower 1, wherein being soluble in the component and particulate matter of absorbent
By liquid absorption, Their Insoluble Components generate energy by the electric discharge of plasma device 2 and open organic-matter chemical key, obtain small molecule
Gaseous compound finally passes through 3 adsorption treatment process of adsorption tower, so that remaining organic gas component is adsorbed or concentrated in
The surface of solids completes the purification treatment to the exhaust gas containing VOCs.
Claims (10)
1. a kind of method of cooperation-removal VOCs, for handling organic exhaust gas, it is characterised in that:
Organic exhaust gas is successively cleaned discharge after washed technique, plasma process and absorbing process；
Wherein, the washing process, component and non-gaseous material for going in removing exhaust gas that agent absorption can be absorbed；
The plasma process, for by the compound small molecule in exhaust gas；
The absorbing process, for adsorb/micro-molecular gas is concentrated.
2. a kind of device of cooperation-removal VOCs, for handling organic exhaust gas, it is characterised in that: including washing unit, plasma
Body unit and absorbing unit；
The washing unit includes wash mill, and absorbent is equipped in the wash mill；
The plasma unit includes plasma device, and the plasma device uses lower temperature plasma technology；
The absorbing unit includes adsorbent equipment, and adsorbent is equipped in the adsorbent equipment；
Wherein, organic exhaust gas is successively purified after washed device, plasma device and adsorbent equipment are handled.
3. a kind of device of cooperation-removal VOCs as claimed in claim 2, it is characterised in that:
At least one filler portion, at least one set of sorbent injection portion are equipped in the wash mill；
The filler portion is set to the top, lower section or surrounding in sorbent injection portion；
Several spray heads are evenly equipped in the sorbent injection portion；
At least one feed pathway is equipped in the sorbent injection portion；
The absorbent is entered in sorbent injection portion by feed pathway.
4. a kind of device of cooperation-removal VOCs as claimed in claim 3, it is characterised in that:
Demister and/or filter device are additionally provided in the sorbent injection portion.
5. a kind of device of cooperation-removal VOCs as claimed in claim 3, it is characterised in that:
The wash mill further includes waste gas inlet, drainage mechanism, deflector and I sections of processing gas gas outlets；
The air inlet is set to the downside of wash mill；
The drainage mechanism is set to the downside or bottom of wash mill；
The deflector is set to the lower section in filler portion and sorbent injection portion, and the gas entered by air inlet is led upwards
Stream；
I sections of processing gas gas outlet is set to the upside or top of wash mill.
6. a kind of device of cooperation-removal VOCs as claimed in claim 5, it is characterised in that:
The deflector and the angle of wash mill bottom surface are 15-60 °；
The deflector is equipped with current equalizing structure.
7. a kind of device of cooperation-removal VOCs as claimed in claim 2, it is characterised in that:
The adsorbent equipment includes II processing gas air inlet, absorption cavity and purified gas gas outlet；
Wherein, the II processing gas air inlet and purified gas gas outlet are set to the two sides of absorption cavity；
Air flow guiding mechanism and adsorbing mechanism are equipped in the adsorbent chamber body；
The air flow guiding mechanism is arranged oppositely with II processing gas air inlet；
The adsorbing mechanism is arranged oppositely with purified gas gas outlet；
The adsorbing mechanism includes at least one set of adsorbent support construction；
The adsorbent support construction is equipped with adsorbent.
8. a kind of device of cooperation-removal VOCs as claimed in claim 7, it is characterised in that:
The length of the absorption cavity: wide: high ratio is 5:1-3:1-3；
The both ends of the absorption cavity are chamfering structure.
9. a kind of device of cooperation-removal VOCs as claimed in claim 7, it is characterised in that:
The air flow guiding mechanism is equipped with current equalizing structure.
10. the device of cooperation-removal VOCs as described in claim 2-9 is any a kind of, it is characterised in that:
Drying device is additionally provided between the wash mill and plasma device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021203708A1 (en) * | 2020-04-08 | 2021-10-14 | 浙江大维高新技术股份有限公司 | Landfill leachate stench purification device and process thereof |
| CN114832573A (en) * | 2022-05-23 | 2022-08-02 | 江苏益元泰生物技术有限公司 | Intelligent control VOCs waste gas integrated treatment method for white spirit production workshop |
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| CN103463966A (en) * | 2013-08-15 | 2013-12-25 | 北京圣海林生态园林环境工程有限公司 | ISB integrated efficient biological deodorization apparatus |
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