CN109364593A - A kind of paint-spraying baking booth waste gas processing method and device - Google Patents
A kind of paint-spraying baking booth waste gas processing method and device Download PDFInfo
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- CN109364593A CN109364593A CN201811395643.5A CN201811395643A CN109364593A CN 109364593 A CN109364593 A CN 109364593A CN 201811395643 A CN201811395643 A CN 201811395643A CN 109364593 A CN109364593 A CN 109364593A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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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
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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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
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/007—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 irradiation
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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
- B01D53/34—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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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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
- B01D53/75—Multi-step processes
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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
- B01D53/86—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- B01D53/8687—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
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Abstract
The invention belongs to technical field of waste gas treatment, disclose a kind of paint-spraying baking booth waste gas processing method and device, the following steps are included: step 1, primarily efficient filter, three dust removals by filtration need to be passed through, respectively first use glass fibre cotton absorbs and filter, and second uses thousand dimensional filter bag of carbon, and third road uses intimate fiber filter vat；Step 2, after sufficiently removing exhaust gas and dust, into low-temperature plasma cooperative photocatalysis clarifier, step 3, the macromolecule organic not being degraded is sufficiently cleaned up through delay reaction warehouse, and by this area's activated carbon adsorption, activated carbon is honeycomb；Step 4, finally, the gas after up to standard is through exhaust tube qualified discharge.The present invention makes full use of the combination of the technology mechanism of low-temperature plasma high energy scission of link and the catalytic mechanism of photocatalysis fast decoupled, increases the rate and efficiency of waste gas purification.
Description
Technical field
The invention belongs to technical field of waste gas treatment more particularly to a kind of paint-spraying baking booth waste gas processing methods and device.
Background technique
Caused by exhaust gas generating source is mainly painted, dried etc. in the courses of work, main component is benzene, toluene, diformazan
The pernicious gases such as benzene, non-methane total hydrocarbons, VOC (volatile organic compounds), formaldehyde.Such exhaust gas has penetrating odor, such as
Human body is acted on, harm is generated to skin, blood, cardiopulmonary, liver, nerve, eyes；As direct or below standard be discharged to meeting in atmosphere
Serious pollution human environment, it is therefore necessary to carry out high efficient and reliable constantly exhaust-gas treatment, can be only achieved environmentally protective and state
Waste gas emission standard as defined in family, place.
Common several organic waste gas treatment methods:
1. condensation method
Exhaust gas is cooled to the dew-point temperature (dew point) of volatile organic compounds hereinafter, being allowed to be condensed into liquid
And the method recycled.Condensation method is widely used in the separation and purifying of raw material or product, and can also be used as control volatility has
Machine object is used.
2. biological treatment
During biological treatment passes through biological treatment system for pollutant (such as volatile organic compounds), by
Pollutant is decomposed completely and is oxidized to carbon dioxide, water, NO3- and SO42- etc. by the mechanism such as decomposition, oxidation, the conversion of microorganism
The inorganic matter of innocuousness.Although biological treatment has characteristic without secondary pollution, compared with other pollution prevention techniques
Under, must consider the overall cost that regional parameter influences especially when selecting, such as land price, water rate, the electricity charge height and
Decree standard etc.；In addition to this, whether which has sufficiently implemented localization and has had comparable maturity at home, also directly
Influence subsequent treatment effeciency and Operation and Maintenance expense.
It is incinerated 3. directly incinerating with catalyst
Incineration method be will the oxygenolysis at high temperature of the gas containing volatile organic compounds composition, and up to peace and quiet useless
Gas is to discharge, this method major advantage is suitable for all flammable sexual elements, and its disadvantage is that fuel consumption is big, operating cost
It is high.Incinerator, which designs, four burning conditions such as can supply oxygen, meet ignition temperature, residence time and exhaust gas flow-disturbing, wherein often
A condition all can optionally situation be corrected, and accurately control, so that exhaust gas completely burned, reaches the treatment effect of expection.
In addition, volatile organic compounds gas, when mixing under certain temperature with air, the concentration point rate of volume need to burn
Ability incendivity in compass.If volatile organic compounds pollutant concentration contained by exhaust gas is not high, from pollutant at
The burning generation heat of part is fairly limited to exhaust gas temperature promotion, is intended to so handle it is still necessary to add appropriate auxiliary fuel, can be only achieved
Required ignition temperature.
4. absorption process
It is gaseous pollutant when exhaust gas and cleaning solution contact, it is anti-by the transmission of the quality such as molecule diffusion, turbulent flow and chemistry
Phenomena such as answering is passed to cleaning solution, so that polluter is separated and is removed, to achieve the effect that net gas.
It absorbs and also referred to as washs, Physical Absorption and two kinds of chemical absorbing can be divided into.Chemical absorbing mainly utilizes
Absorbent reacts with gas pollutant generation and gives removal；And Physical Absorption is mainly the solubility by gas in a liquid,
And achieve the purpose that remove air pollutants.Usual chemical absorbing can increase reaction rate by lifting operation temperature, pressure, no
The rate for crossing while but reducing Physical Absorption, as Physical Absorption compared with can reach preferable removal effect under low-temperature operation.
In general, chemical absorbing can make pollutant concentration level off to zero-emission, and Physical Absorption can only be reduced to pollutant concentration
Certain degree, therefore chemical absorbing is upper quite important in the control and application of certain gas pollutants.
5. absorption method
Suction-operated is that the effect of solid surface force itself attracts gas molecule, and the solid with adsorption ability claims
For adsorbent, the substance for being adsorbed on the surface of solids is then known as adsorbent.Common activated carbon adsorption.
Absorption method is suitable for handling air quantity and contains the exhaust gas of light-concentration volatile organic compound greatly, and greatest feature is can be
Meet in the opereating specification of economic condition, the ingredient of certain volatile organic compounds almost in removing exhaust gas.
6. photocatalysis oxidation technique
So-called light-catalyzed reaction, the chemical reaction exactly carried out under the action of light.Photochemical reaction needs molecule absorption
The electromagnetic radiation of specific wavelength is excited to generate molecular-excited state, and chemical reaction then can occur and generate new substance, or become
Cause the intermediate chemical product of thermal response.It can carry out at normal temperature, save the cost can only handle the organic exhaust gas of low concentration,
Catalyst is also easy inactivation, poor to the polluter effect that cannot absorb photon, the exhaust gas of complicated component is unable to reach pre-
Phase treatment effect.Be tested verify the medical fermented organic of bright available photocatalytic oxidation removal include: methanol, it is ethyl alcohol, different
Propyl alcohol, n-butanol, 2-Ethylhexyl Alcohol, propane, isopentane, hexane, butyraldehyde, methyl ethyl ketone, butyl acetate, diethylamine, three second
Amine, dimethyl disulphide, methyl mercaptan, dimethyl sulfide, benzene,toluene,xylene, styrene etc..
7. ozone decomposition technique
Ozone generates hydroxyl radical free radical under UV photon irradiation, by organic volatile VOCs resolve into low molecular compound,
Carbon dioxide and water, achieve the purpose that non-pollution discharge.The technical operation is simple and easy.Processed exhaust gas: ammonia, trimethylamine,
Hydrogen sulfide, first sulphur hydrogen, methyl mercaptan, methyl sulfide, methyl disulfide, carbon disulfide and styrene, sulfide H2S, VOCs class, benzene, first
The molecular chain structure of benzene, dimethylbenzene makes organic or inorganic macromolecule malodorous compound strand, irradiates in high energy ultraviolet Line beam
Under, degradation is transformed into low molecular compound, such as CO2, H2O etc..
8. plasma method
When applied voltage reaches the discharge voltage of gas, gas is breakdown, and generating includes electronics, various ions, atom
With the mixture including free radical.It is acted on, is made using the pollutant in these high energy electrons, free radical isoreactivity particle and exhaust gas
Contaminant molecule is decomposed in a very short period of time, to achieve the purpose that degradation of contaminant.Organic compound final product is
CO2, CO and H2O。
In conclusion problem of the existing technology is:
(1) biological treatment must consider the overall cost that regional parameter influences, such as soil valence when selecting especially
Lattice, water rate, the height of the electricity charge and decree standard etc.；
(2) it directly incinerates and is incinerated with catalyst, fuel consumption is big, and operating cost is high；
(3) usually chemical absorbing can increase reaction rate by lifting operation temperature, pressure, but but reduce object simultaneously
The rate absorbed is managed, Physical Absorption can only be reduced to pollutant concentration certain degree；,
(4) absorption method contains greatly the exhaust gas of light-concentration volatile organic compound suitable for handling air quantity, has two subsidiary risks useless
The generation of gurry；
(5) photocatalysis oxidation technique can only handle the organic exhaust gas of low concentration, and catalyst is also easy inactivation, for ingredient
The actual treatment efficiency of complicated exhaust gas is relatively low.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of paint-spraying baking booth waste gas processing method and devices.
The invention is realized in this way a kind of paint-spraying baking booth waste gas processing method, the paint-spraying baking booth waste gas processing method
The following steps are included:
Step 1, primarily efficient filter need to be adsorbed by three dust removals by filtration, respectively first using glass fibre cotton
Filter, second use thousand dimensional filter bag of carbon, and third road is using accurate thousand dimensional filter bucket；
Step 2, after sufficiently removing exhaust gas and dust, into low-temperature plasma cooperative photocatalysis clarifier, in organic exhaust gas
The organic molecules such as toluene, dimethylbenzene, non-methane total hydrocarbons and malodor molecule are in the high electric field of low-temperature plasma by rapid scission of link
Open loop, is decomposed into small molecules fragments, and small molecules fragments are again carbon dioxide, water and harmless by rapid catalysis oxidation by photocatalysis section
Substance；
Step 3, the macromolecule organic not being degraded is sufficiently cleaned up through delay reaction warehouse, living by this area's activated carbon adsorption
Property carbon be honeycomb；
Step 4, finally, the gas after up to standard is through exhaust tube qualified discharge.
Further, the paint-spraying baking booth emission-control equipment of the paint-spraying baking booth waste gas processing method includes: paint spray booth, low temperature
Plasma device, VOCs photooxidation catalytic degradation device, dry type rule filter, reaction delay storehouse, main air hose；
Dry type rule filter is connect by exhaust pipe with low-temperature plasma device；Low-temperature plasma device by exhaust pipe with
The connection of VOCs photooxidation catalytic degradation device；VOCs photooxidation catalytic degradation device is connect by exhaust pipe with reaction delay storehouse；Instead
The storehouse that should be delayed is connect by exhaust pipe with main air hose；Safety device is bolted in equipment on pressure-relief explosion-proof mouth.
Further, the minimum resistance value 18pa, maximum value 185Pa of first of filtering；Second filters minimum resistance value
20pa, maximum value 200Pa；Filter minimum resistance value 25pa, maximum value 350Pa in third road.
Advantages of the present invention and good effect are as follows:
(1) high efficient and reliable quickly removes stench, to the dirts such as VOC class, benzene,toluene,xylene and ammonia, hydrogen sulfide, styrene
Dye object quickly and efficiently can be removed and be deodorized, and deodorizing rate is up to 90% or more.
(2) operating cost is low, every processing 1000m3/h exhausted air quantity, only 0.6 degree of electricity of power consumption, and low energy consumption, and windage is low, saves big
Measure exhaust blower power energy consumption.
(3) conditions for equipment use is of less demanding, and operating ambient temperature is at -30 DEG C -65 DEG C, and humidity is in 40%-95%
Reliablely and stablely work normally.
(4) without adding any substance, chemical reaction is participated in without adding any substance, it is only necessary to exhaust duct and air draft
Machine.
(5) adaptable, it is sustainable steadily to work.
(6) it safeguards that light and fast, UV pipe are replaced by drawer type light and fast, is not necessarily to personal management.
(7) UV lamp pipe long service life, up to 12000 hours.
(8) control system, using centralized control.
Paint-spraying baking booth Batch Process of the invention can generate a large amount of secondary pollution only with active carbon, and individually use
Its purification efficiency of the technologies such as photocatalysis, low-temperature plasma is low, it is difficult to which stabilization meets environmental protection requirement.And low-temperature plasma and light
Catalyzing cooperation processing can greatly improve purification efficiency, and the ultraviolet light that cold plasma discharge generates just can be by photochemical catalyst institute
It utilizes, while the ability of electric field can destroy the molecular structures such as long-chain, annular, be allowed to short chain, small molecule, more favorably use up and urge
Change effect.The present invention improves purification efficiency, reduces secondary pollution, plug and play.
Detailed description of the invention
Fig. 1 is paint-spraying baking booth waste gas processing method flow chart provided in an embodiment of the present invention.
Fig. 2 is paint-spraying baking booth emission-control equipment structural schematic diagram provided in an embodiment of the present invention.
In figure: 1, paint spray booth；2, low-temperature plasma device；3, VOCs photooxidation catalytic degradation device；4, dry type advises filter；5,
Reaction delay storehouse；6, main air hose.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, paint-spraying baking booth waste gas processing method provided in an embodiment of the present invention the following steps are included:
S101: primarily efficient filter need to be absorbed and filter by three dust removals by filtration, respectively first using glass fibre cotton,
Second uses thousand dimensional filter bag of carbon, and third road is using accurate thousand dimensional filter bucket；
S102: sufficiently after removing exhaust gas and dust, the first into low-temperature plasma cooperative photocatalysis clarifier, in organic exhaust gas
The organic molecules such as benzene, dimethylbenzene, non-methane total hydrocarbons and malodor molecule are opened in the high electric field of low-temperature plasma by rapid scission of link
Ring, is decomposed into small molecules fragments, and small molecules fragments are again carbon dioxide, water and harmless object by rapid catalysis oxidation by photocatalysis section
Matter；
S103: the macromolecule organic not being degraded is sufficiently cleaned up through delay reaction warehouse, by this area's activated carbon adsorption, activity
Carbon is honeycomb；
S104: finally, the gas after up to standard is through exhaust tube qualified discharge.
As shown in Fig. 2, paint-spraying baking booth emission-control equipment provided in an embodiment of the present invention include: paint spray booth 1, low temperature etc. from
Sub- device 2, VOCs photooxidation catalytic degradation device 3, dry type rule filter 4, reaction delay storehouse 5, main air hose 6.
Dry type rule filter 4 is connect by exhaust pipe with low-temperature plasma device 2；Low-temperature plasma device 2 passes through exhaust pipe
Road is connect with VOCs photooxidation catalytic degradation device 3；VOCs photooxidation catalytic degradation device 3 by exhaust pipe with react be delayed storehouse 5
Connection；Reaction delay storehouse 5 is connect by exhaust pipe with main air hose 6；Safety device is bolted in equipment with pressure release
On venting.
It is further described below with reference to the embodiment application principle of the invention to this.
Embodiment 1
Pre-treatment work is former: first using glass fibre cotton adsorption filtration, the minimum resistance value 18pa of road filtering, maximum resistance
Value 185Pa, adsorption rate are greater than percent 8O.(being arranged in below spray room floor grating) second uses thousand dimensional filter bag of carbon, should
Road filters minimum resistance value 20pa, and maximum value 200Pa, filtration of particulate matters 5um or more, adsorption rate is greater than 75.Third road is using essence
Close thousand dimensional filter bucket, the road filter minimum resistance value 25pa, maximum value 350Pa, filtration of particulate matters 5um or less.A whole set of coating cloud mistake
Filter rate is up to 98%
UV photooxidation catalysis drop reason device working principle: it is benzene, benzene homologues, non-methane that composition need to be mainly handled in VOCs exhaust gas
Total hydrocarbon.VOCs touches rare by 27 kinds of TiO2 etc. using infusion process during flowing through the ultraviolet radiation zone uV with 08m/s
Noble metal granule is supported on the photooxidation catalysis net ACH/Ti02 that bee Bing activated carbon surface is prepared, in homemade photooxidation reactor
The tight outside line excitation of 185nm wavelength is lower to carry out dynamic catalysis degradation.Because ACH and TiO2 has good concertedness, in VOCs concentration,
Humidity is degraded under illumination stability state stable, and degradation rate is up to percent 80.
The macromolecule organic not being degraded is honeycomb by this area's activated carbon adsorption, activated carbon.Feature body surface area is big,
Adsorption rate is high, long service life.
Warning device, which mainly detects catalytic reaction zone combustable gas concentration, prevents excessive concentration from causing detonation and generating fire
Calamity causes any property loss and casualties.
Safe explosion-proof device is mainly that the pressure for preventing detonation from generating with pressure-relief explosion-proof mouth in equipment crosses havoc equipment
Fire is caused to cause the generation of property loss and personnel casualty accidents.
Blower in fan cabinet has exhaust gas with air hose realization using the explosion-proof belt driving motor of high pressure blower aditus laryngis is explosion-proof
Organize high-altitude qualified discharge.
Air hose is made at the top of flange encryption mounting bolt-connection using galvanized sheet and does rainproof treatment and (have user according to field conditions
Self-control).
Control system realizes that spray/baking vanish and exhaust-gas treatment link using intelligent control.And show the operation shape of each functional section
State and fault alarm
Warning device, which mainly detects catalytic reaction zone combustable gas concentration, prevents excessive concentration from causing detonation and generating fire
Calamity causes any property loss and casualties.
Safe explosion-proof device is mainly that the pressure for preventing detonation from generating with pressure-relief explosion-proof mouth in equipment crosses havoc equipment
Fire is caused to cause the generation of property loss and personnel casualty accidents.
Blower in fan cabinet has exhaust gas with air hose realization using the explosion-proof belt driving motor of high pressure blower aditus laryngis is explosion-proof
Organize high-altitude qualified discharge.
Air hose is made at the top of flange encryption mounting bolt-connection using galvanized sheet and does rainproof treatment and (have user according to field conditions
Self-control).
Control system realizes that spray/baking vanish and exhaust-gas treatment link using intelligent control.And show the operation shape of each functional section
State and fault alarm.
Embodiment 2
Fire-proof and explosion-proof measure
(1), all in photooxidation catalytic waste gas processing unit to need coupling part with resistant to high temperatures, anti-corrosion electric wire and rubber pad into
Row encapsulation process is impermissible for any live part and directly contacts with exhaust gas.
(2), all mask sealings of photooxidation catalytic waste gas processing unit are all made of the sealing of heatproof flame-retardant sealing strip.
(3), UV lamp pipe is all made of independent special electronic ballast power supply, which has over-voltage, overcurrent, sky
The defencive functions such as load, short circuit, overtemperature, UV lamp Guan Ruo have exception, and electric ballast is the operation for stopping the light pipe and indicator light is put out
It goes out.
(4), exhaust fan is arranged in photooxidation catalytic waste gas processing unit end, and the air that makes that treated in this way is by exhausting
Machine, while making non-blind area in emission-control equipment, any exhaust gas will not be stopped.
(5), exhaust fan and photooxidation catalytic unit interlock.
Embodiment 3
Dry paint-fog filter
Prevent the residual dust in gas processed from entering adsorptive purifier system, through dry dust removal filtering technique,
To ensure the gas source cleanliness of absorption processing system, dry filter uses synthetic fibers cotton, to improve the service life of fluorescent tube,
Reduce equipment operating cost.Filter is also known as filter collector, is to separate to capture gas by porous filter medium (filtrate)
In solid, liquid particle purification device.After dusty gas enters deduster, by filter material layer, dust filtering is adhered to filtrate
Windward side enters lower one for the treatment of process or discharge by filtrate leeward escaping gas.As dust filtering process constantly carries out, filter
The dust that material surface traps is more and more thicker, and dust layer resistance increases, and when resistance reaches certain value, need to make at replacement to filtrate
Reason.
Blower
Air-introduced machine provides the power that purification system operates normally, and is one of essential equipment.After usual blower uses
Formula arrangement is set, the rear-mounted arrangement of blower can reduce polluter, and the cloth wind under negative-pressure operation is equal to blower burn into cleaning equipment
The advantages that even, exhaust gas No leakage.It enters the wind valve and uses flanged joint, there is enough distances between each other, convenient between valve
Pipe installing and equipment maintenance and assembly and disassembly.Blower is used with blast pipe and is flexibly connected by compensator, just to avoid blower
Normal vibration influence air hose and relevant device.
This project selects blower
Model: YDW 5.0A 2 (low noise van-type blower)
Power: 5.5Kw
Total pressure: 787-776Pa
Dry filter+UV photodissociation equipment+plasma+delay reaction warehouse resistance 680Pa
Drag overall: 700*1.1=748Pa
Therefore the total pressure and air quantity of selected blower fully meet system requirements and have more than needed.
Note: blower is the Unique Device (noise figure 75dB or so) for generating noise in a whole set of VOCs treatment；Installation
When basis plus-minus shake, blower inlet and outlet use soft strength, reduce air hose vibration etc.；Ambient noise on daytime is greater than 80dB, evening 4S
It does not work, therefore blower does not generate noise pollution at night.
Photocatalysis facility
Can the purification style of UV photooxidation catalysis be that cabinet occurs normally to purify the key technology of exhaust gas, working principle
Be: photooxidation catalytic unit waste gas decomposition molecule: with 253.7 nano waveband light cuttings, chain rupture, burning, cracking emission molecule chain,
Change molecular structure, is handled again for first；It takes 185 nano waveband light to carry out catalysis oxidation to emission molecule, makes point after destroying
Daughter neutron or atom are with O3It is combined, makes organic or inorganic macromolecule malodorous compound strand, in catalytic oxidation process,
It is transformed into low molecular compound CO2, H2O etc., is handled again for second；Catalyst uses polymer honeycomb as carrier, comprehensive
With light source contacts, under the irradiation of inert catalyst light source, accelerates the rate of cleavage of exhaust gas, shortens exhaust gas and light source contacts time,
React it sufficiently with exhaust gas.
Important technological parameters are transformed in photocatalysis:
General power: 13.2Kw (2)
Catalyst: anatase titanium dioxide TiO2
Catalyst carrier: honeycomb polymer
Handle wind speed: 2-2.6m/s
Residence time: 1.8s
Equipment resistance :≤200Pa
Removal efficiency: 45%
Plasma facility
The neutral conductive fluid that low temperature plasma is made of electronics, ion, free radical and neutral particle, in air
It is usually generated by gas discharge in purification process.Discharge electrode surface, wall surface and coating are put in plasma reactor
Catalyst is likely to plasma and has chemically reacted catalytic action, plasma exciatiaon and activation of catalyst synergy.
In low-temperature plasma photocatalysis system, the removal existing plasma chemical reaction process of pollutant process has light-catalyzed reaction again
Process is also likely to be present synergistic effect between the two.In plasma production, pollutant to be processed is banged by high energy electron
Simple substance can be directly broken down into or be converted into innocuous substance by hitting.In addition, the bombardment of high energy electron make pollutant ionization, dissociation,
Excitation, produces a large amount of plasmas.Ion, electronics, excited atom, molecule and free radical in plasma are all extremely living
Bold and vigorous reactive species become the reaction for being difficult to carry out or speed is very slow under usual conditions very quickly, they are further
It is particularly advantageous to the processing of Recalcitrant chemicals so that pollutant be made to be degraded with contaminant molecule, ionic reaction.In addition,
Some downward transition energies of high energy excited particles generate ultraviolet lights when being discharged due to active ion and hydroxyl radical gas, when photon or
When the energy of electronics is greater than semiconductor forbidden bandwidth, will the electronics in vitalizing semiconductor transit to conduction band from valence band, form tool
There is very strongly active electron hole pair, a series of progress for redox reactions of an one-step inducing of going forward side by side.Photohole has very strong
Acquisition electronic capability, can with catalyst surface adsorb OH- and H2O react and generate hydroxyl radical free radical, thus further
Oxidation stain object.Since plasma discharge photocatalytic process has a large amount of plasmas, strongly active electron bombardment, ultraviolet radiation
Etc. composite factors synergistic effect, thus more rapidly can effectively decompose harmful substance and sterilization and deodorization in air.
Cylinder honeycomb high efficiency electrostatic field unit: cylinder honeycomb electric field, the honeycomb sun made in the way of cold working
Pole, the center of each honeycomb are one with echinulate cathode needle.The uniform distance of cathode needle and anode canister, makes its electric-field strength
Degree reaches most strong and most uniform.The characteristics of honey comb like electric field also has rigidity good, easy to disassemble, is convenient for cleaning.
Advanced safe high voltage occurs and control route, and high-tension transformer is the epoxy solid transformation using priming by vacuum
Device, power is powerful, and temperature rise is few, impact resistance, Maintenance free, without electromagnetic radiation.For equipment efficient stable operation provide in
Guaranteeing.Perfect Electrostatic Control route: electronic apparatus component all uses internationally renowned brand.Control route can ensure electricity
Field has perfect operation and defencive function
Plasma facility important technological parameters:
The big cylinder electric field of honeycomb: 88 hole stainless steel electric fields
Quantity: 2 (modularization)
Voltage class: 220V
General power: 2000W/
Output voltage: 0-20KV
Frequency of oscillation: 0-50Hz
Output power: 0-500W
Handle wind speed: 2-2.6m/s
Residence time: 1-2/s
Removal efficiency: 45%
Be delayed reaction warehouse
Reaction warehouse effect be delayed to extend the reaction time, stacks active carbon as the safeguard mean after leading portion equipment failure,
Use the cellular activated carbon of through-hole structure for adsorbent material, adsorption rate is fast, and saturated extent of adsorption is big.
Main material: cellular activated carbon
Windage :≤100Pa
Use -20-70 DEG C of temperature
Size: 100*100*100
Use humidity: 0~95%RH
Structure type: drawer type
Efficiency are as follows: 80%
The active carbon replacement cycle: the active carbon of three japanning room cleaning equipments is replaced once at quarterly intervals, every time replacement activity
Charcoal quantity is 0.275 ton.
Fire insulation valve
It is high-rise andIt is otherAll kinds of modern architectures are designed with greatly ventilation, air-conditioning and smoke control system, once fire occurs, these
Pipeline in system will become the channel of flame, fire and smoke spread.Expand to prevent the intensity of a fire from spreading by air hose, in " buildingIf MeterFire safety rules " clear stipulaties fire prevention in GBJ16-87 and " Code for fire protection design of high rise buildings " GB50045-95
The setting requirements of valve, exhaust smoke valve.
Exhaust smoke valve is on smoke evacuation system pipeline or discharging fumeBlowerSuction inlet at, it is usually in closed state, when fire send out
When raw, manually or automatically opened by fire alarm signalValve, cooperated according to system function and discharged fume, when flue-gas temperature in pipeline
It is automatically closed when reaching 100 DEG C, and fire stability and fire integrity demands can be met within a certain period of time, risen every cigarette back-fire relief
Effect.
Air hose
Original exhaust pipe, the processing of two japanning rooms are utilized with 2, the victory shop 4S paint-spraying baking booth waste gas pollution control and treatment exhaust pipe
Equipment directly connects roasting, paint spray booth discharge outlet, and treated, and exhaust gas passes through fan outlet, the former air hose of access.The pipeline of paint room
Access that No.1 is roasting, inlet pipeline of lacquer spraying waste gas abatement equipment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of paint-spraying baking booth waste gas processing method, which is characterized in that the paint-spraying baking booth waste gas processing method includes following step
It is rapid:
Step 1, primarily efficient filter need to be absorbed and filter by three dust removals by filtration, respectively first using glass fibre cotton, the
Two use carbon fiber filter bag, and third road uses intimate fiber filter vat；
Step 2, the first after sufficiently removing exhaust gas and dust, into low-temperature plasma cooperative photocatalysis clarifier, in organic exhaust gas
The organic molecules such as benzene, dimethylbenzene, non-methane total hydrocarbons and malodor molecule are opened in the high electric field of low-temperature plasma by rapid scission of link
Ring, is decomposed into small molecules fragments, and small molecules fragments are again carbon dioxide, water and harmless object by rapid catalysis oxidation by photocatalysis section
Matter；
Step 3, the macromolecule organic not being degraded is sufficiently cleaned up through delay reaction warehouse, by this area's active carbon, the contour ratio of zeolite
Surface area porous structural material absorption, activated carbon is honeycomb；It is complete that unreacted in purification process can effectively be cut down simultaneously
Ozone discharge.
Step 4, finally, the gas after up to standard is through exhaust tube qualified discharge.
2. a kind of paint-spraying baking booth emission-control equipment of paint-spraying baking booth waste gas processing method as described in claim 1, feature exist
In the paint-spraying baking booth emission-control equipment includes: the paint-spraying baking booth emission-control equipment packet of paint-spraying baking booth waste gas processing method
It includes: paint spray booth, low-temperature plasma device, VOCs photooxidation catalytic degradation device, dry type rule filter, reaction delay storehouse, main air hose；
Dry type rule filter is connect by exhaust pipe with low-temperature plasma device；Low-temperature plasma device passes through exhaust pipe and VOCs
The connection of photooxidation catalytic degradation device；VOCs photooxidation catalytic degradation device is connect by exhaust pipe with reaction delay storehouse；Reaction is prolonged
When storehouse connect with main air hose by exhaust pipe；Safety device is bolted in equipment on pressure-relief explosion-proof mouth.
3. paint-spraying baking booth emission-control equipment as described in claim 1, which is characterized in that the minimum resistance value of first of filtering
18pa, maximum value 185Pa；Second filters minimum resistance value 20pa, maximum value 200Pa；Filter minimum resistance value in third road
25pa, maximum value 350Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811395643.5A CN109364593A (en) | 2018-11-22 | 2018-11-22 | A kind of paint-spraying baking booth waste gas processing method and device |
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|---|---|---|---|
| CN201811395643.5A CN109364593A (en) | 2018-11-22 | 2018-11-22 | A kind of paint-spraying baking booth waste gas processing method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111389161A (en) * | 2020-04-20 | 2020-07-10 | 上海红重机械装备有限公司 | Steel structure coating waste gas treatment process |
| CN111701386A (en) * | 2020-07-03 | 2020-09-25 | 常州市爱伦机械有限公司 | VOCs waste gas treatment system and treatment method thereof |
| CN114917738A (en) * | 2022-06-10 | 2022-08-19 | 浙江深澜环境工程有限公司 | High-efficiency treatment method and system for VOCs waste gas with large air volume |
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| CN206285622U (en) * | 2016-11-24 | 2017-06-30 | 广州冉升环保工程有限公司 | A kind of paint spray booth purifier |
| CN207591614U (en) * | 2017-10-10 | 2018-07-10 | 江苏扬瑞新型材料股份有限公司 | Lacquer spraying waste gas processing equipment |
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| US20070053805A1 (en) * | 2005-09-06 | 2007-03-08 | Canon Kabushiki Kaisha | Gas decomposition apparatus |
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Application publication date: 20190222 |