CN107569987A - A kind of processing method and processing device of middle low concentration VOCs gases - Google Patents
A kind of processing method and processing device of middle low concentration VOCs gases Download PDFInfo
- Publication number
- CN107569987A CN107569987A CN201710895296.1A CN201710895296A CN107569987A CN 107569987 A CN107569987 A CN 107569987A CN 201710895296 A CN201710895296 A CN 201710895296A CN 107569987 A CN107569987 A CN 107569987A
- Authority
- CN
- China
- Prior art keywords
- vocs
- low concentration
- middle low
- molecular sieve
- uvc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 138
- 239000007789 gas Substances 0.000 title claims abstract description 116
- 238000012545 processing Methods 0.000 title claims abstract description 50
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 239000002808 molecular sieve Substances 0.000 claims abstract description 64
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 61
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 48
- 230000003647 oxidation Effects 0.000 claims abstract description 48
- 238000011282 treatment Methods 0.000 claims abstract description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000001179 sorption measurement Methods 0.000 claims abstract description 25
- 238000003795 desorption Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 230000003197 catalytic effect Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 56
- 239000011941 photocatalyst Substances 0.000 claims description 25
- 238000010521 absorption reaction Methods 0.000 claims description 23
- 230000001699 photocatalysis Effects 0.000 claims description 13
- 238000007146 photocatalysis Methods 0.000 claims description 13
- 229910021536 Zeolite Inorganic materials 0.000 claims description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 10
- 239000010457 zeolite Substances 0.000 claims description 10
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000006303 photolysis reaction Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 10
- 239000013618 particulate matter Substances 0.000 abstract description 4
- 229910000510 noble metal Inorganic materials 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 230000008569 process Effects 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000006555 catalytic reaction Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 5
- -1 hydroxyl radical free radical Chemical class 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000002156 adsorbate Substances 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 229910000497 Amalgam Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical class N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000005588 protonation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A kind of processing method and processing device of middle low concentration VOCs gases, the VOCs gases of middle low concentration are filtered dispel particulate matter after, by UVC light decompose, UVC light excite oxidation, ozone oxidation and nano-TiO2Photochemical catalytic oxidation, molecular sieve adsorption and desorption, VOCs gases are subjected to decomposition oxidation, are converted into CO2And water, after being filtered by ozone filter, discharge after testing.The present invention is acted synergistically by molecular sieve module and the irradiation of UVC light, realize online VOCs adsorption and desorptions, in processing procedure, without chemical addition agent and noble metal catalyst, secondary pollution is not produced, greatly improve efficiency, so as to reach good treatment efficiency, after processing, most VOCs gases are decomposed oxidation, without additional energy, and reduce the O＆M cost of device.
Description
Technical field
The invention belongs to VOCs treatment field, and in particular to a kind of processing method and dress of middle low concentration VOCs gases
Put.
Background technology
VOCs refers at normal temperatures, the various VOCs that 50 DEG C~260 DEG C of boiling point, and the VOCs of broad sense is reachable
Millions of kinds, be one of major pollutants of air.By its chemical constitution, following major class can be divided into：Hydro carbons (alkanes, alkene and
Aromatic hydrocarbons), esters, aldehydes, ketone, alcohols, phenols, amine, nitrile (cyanogen) class and organic halogen system derivative etc..
Most VOCs have toxicity, have wide, poisonous pollution, foul smelling, discharge capacity is big, concentration is low
The characteristics of, its good processing is the problem of environmental protection industry (epi).Because all kinds of VOCs molecular structures are different, bond energy height differs, category is many
More, very big variable is presented in its processing procedure；And generally gas flow is larger, humiture differs, these cause middle low concentration
VOCs processing it is difficult.
At present, to VOCs processing, exist or equipment manufacturing cost is higher or O＆M cost is expensive or treatment effect is not good enough or
The situations such as potential safety hazard is more, the processing mode of main flow have following several：
1st, non-thermal plasma trap.Treatment effect：About 50%；Operating cost：It is higher；It is applicable：The VOCs gas of low concentration
Body；Overall merit：Disposal ability is limited, high voltage arcing, once there is the precedent for producing detonation.
2nd, flame combustion method (RCO/RTO).Treatment effect：>=90%；Operating cost：It is high；It is applicable：Higher concentration, stream
Measure less VOCs gases；Overall merit：The power consumption of big flow gas compression is higher, and equipment disposably puts into costliness, need to constantly added
Add catalyst or fuel, O＆M cost height.
3rd, absorption method：Mainly adsorption module is made using activated carbon, nano zeolite etc. in market.Treatment effect：>=70%；
Operating cost：It is higher；It is applicable：The VOCs gases of middle low concentration；Overall merit：Easy adsorption saturation, cost is desorbed with catalyst
It is higher, constantly change adsorption module and produce solid waste again.The hidden danger that the most common activated carbon in market smolders when also having temperature higher.
4th, UVC photocatalysis.Treatment effect：About 50%；Operating cost：Typically；It is applicable：The VOCs gases of middle low concentration；It is comprehensive
Close evaluation：The UVC photocatalysis equipment of market operation, does not pay attention to regulation, the raising of light efficiency of UVC light intensity generally, may in processing
The problems such as caused ozone concentration is insufficient or too high, and VOCs gas temperatures are too high.
At present, UVC photocatalysis+active carbon adsorption or UVC photocatalysis+low-temperature plasma+active carbon adsorption are utilized though having
Etc. association schemes, still, the online desorption problem of its unresolved adsorbent.In the prior art, have by setting two groups of absorption
The scheme of bed alternation, after one group of adsorbent bed adsorption saturation, switch VOCs gas passages, start another group of adsorbent bed work
Make；The adsorbent bed of adsorption saturation is desorbed, catalyst need to be added during desorption and is needed after being compressed to desorption gas,
The device burned again.Moreover, the program fails to realize that real-time online is desorbed, and the program takes up an area bigger, construction costs and fortune
It is also high to tie up cost.
The content of the invention
It is an object of the invention to provide a kind of processing method and processing device of middle low concentration VOCs gases, existing skill is overcome
The problem of centering low concentration VOCs gas treatment effects are undesirable in art, cost is high, the present invention can make absorption real-time with desorption
It is online to carry out, without chemical addition agent and noble metal catalyst in processing procedure, any secondary pollution is not produced, centering is low dense
The treatment effect of VOCs gases is spent up to more than 90%, without extra energy consumption, reduces O＆M cost.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of processing method of middle low concentration VOCs gases, comprises the following steps：
1) filter
Middle low concentration VOCs gas of the volumetric concentration in below 800ppm is filtered by filter screen or filter membrane, dispelled
Grain thing；
2) first processing
Decompose oxidation：VOCs gases after filtering enter the first processing region, carry out UVC light irradiation, UVC photons with
VOCs gases occur photolysis reactionses, ozone oxidation and UVC light and excite oxidation reaction, and treatment temperature is 20~100 DEG C；
Adsorption and desorption：VOCs gases pass through molecular sieve module, VOCs gases made of sorbing material and photocatalyst material
Adsorbed material absorption, excite oxidation and light decomposition anti-with dual waves ultraviolet light generation photochemical catalytic oxidation, ozone oxidation, UVC light
Should, it is desorbed from molecular sieve module；
3) handle again
Decompose, oxidation：The VOCs gases handled by step 2) enter second processing region, are irradiated by UVC light, UVC
Photon and VOCs gas molecules occur photolysis reactionses, ozone oxidation and UVC light and excite oxidation reaction, and treatment temperature is 20~
100℃；
Adsorption and desorption：VOCs gases after processing pass through the molecular sieve module made of sorbing material and photocatalyst material,
VOCs gases are adsorbed material absorption, and photocatalysis oxidation reaction, ozone oxidation and photolysis reactionses occur with dual waves ultraviolet light,
It is desorbed from molecular sieve module；
4) filtering ozone, discharge are decomposed
Residual ozone in the gas handled by step 3) decomposes through unicast peak UVC light, ozone filter filters, warp
Discharged after detection, temperature of exhaust gas<60 DEG C, the volumetric concentration of VOCs gases is less than 10ppm in discharge gas.
Further, if the VOCs gas temperatures that need to be handled be more than 100 DEG C, in step 2), adjust VOCs gases temperature to
20~60 DEG C.
Also, in step 2) and step 3), VOCs processing time is 1~3s altogether.
Further, step 2) and step 3) the UVC photons be dual waves ultraviolet light, main crest be respectively 253.7nm and
185nm；The main crest of the unicast peak UVC light is 253.7nm.
Also, in the UVC light irradiation process, in the UVC light irradiation process, Output optical power is adjustable.
Further, the photocatalyst material in the molecular sieve module is coated in sorbing material surface.
Preferably, in the molecular sieve module, photocatalyst material is coated in sorbing material surface, and thickness is 30~50nm,
Or the photocatalyst material mixed with the particle of sorbing material after be pressed into bulk.
Preferably, described photocatalyst material is nano-TiO2, the sorbing material in the molecular sieve module is nanometer boiling
Stone or flyash.
Preferably, the molecular sieve module is prepared by suspended nitride method：With ultrasonic wave by nano-TiO2Powder is scattered in
In water or organic solvent, nano-TiO is made2Suspension, then by the way of dip-coating or spraying, by nano-TiO2Coated in pressure
It is made on the sorbing material of block, molecular sieve module is obtained after solidification.
Also, the molecular sieve module is prepared by mixing coating process：By nano zeolite or the particle and nanometer of flyash
TiO2Powder mixes, and makes nano-TiO2Nano zeolite or fine coal gray surface are attached to, is then compressed to molecular sieve module.
Further, before step 4) is carried out, repeat step 3) process.
In the inventive method in step 2) and step 3), UVC photons are dual waves ultraviolet light, and main peak value is respectively
253.7nm and 185nm, photon energy are respectively 472KJ/mol and 647KJ/mol, and two kinds of principal spectrums can be to part VOCs points
Son carries out photolysis reactionses, wherein, the photon and photocatalyst material (such as nano-TiO that wavelength is 253.7nm2) produce very strong light
Catalytic action, light-catalyzed reaction is carried out to VOCs gases；Wavelength is after 185nm photon is sent, instantaneously by the O in air2Point
Son absorbs, and is instantaneously ionized, O2It is ionized and is decomposed into O atom, O atom and the O in air2Ozone O is combined at once3, ozone
With strong oxidizing property, oxidation reaction directly or indirectly occurs with a large amount of VOCs molecules, generates CO2And H2O, meanwhile, ozone has good
Good spatial dispersion, can make up the limitation that UVC photons only linearly irradiate just, before the absorption of molecular sieve module is entered, lead to
The irradiation of UVC light and ozonidation are crossed, has reduced the VOCs gas concentrations for being available for absorption by a relatively large margin.
In absorption and desorption, the absorption of molecular sieve module is decomposed with UVC light, UVC light excites oxidation, O3Ozone oxygen
Change, photocatalyst material (such as nano-TiO2) photochemical catalytic oxidation acts synergistically together, specifically：
Sorbing material in molecular sieve module adsorbs to VOCs gases, by VOCs, H2O Molecular Adsorptions are to surface, shape
Into ADSORPTION STATE VOCs (ads) and H2O (ads) molecule, then by with nano-TiO2Mass transfer diffusion between particle surface, is formed micro-
High local concentrations in thin scope, prepare for light-catalyzed reaction.TiO2Particle has band structure, by the low energy full of electronics
Valence band (VB), empty higher energy conduction band (CB) and between forbidden band composition, when the UVC for being exceeded energy gap by energy is irradiated, valency
Electronics (the e taken–) being excited transits to conduction band, and corresponding photohole (h is left in valence band+), it is scattered in molecular sieve mould
The nano-TiO on block top layer2Light induced electron and photohole can now be made quickly from vivo migration to surface, and then participated in next step
Reaction：TiO2+hν→TiO2(h++e–)。
Photohole (h+) it is a kind of strong oxidizer, it will can adsorb in TiO2The H of particle surface2O and OH–It is oxidized to hydroxyl
Base free radical (OH), and photoinduced electron (e–) it is a kind of strong reductant, TiO can be captured2Surface absorption oxygen generation super oxygen the moon from
Sub- free radical (O2 –), and further by protonation, turn into another source of hydroxyl radical free radical (OH), meanwhile,
The probability of recombination in light induced electron and hole is also reduced, improves reaction rate.h+It is two kinds of active materials with OH, no selection
Property, almost can be CO by all VOCs molecules complete oxidations2And H2The nontoxic material such as O, its action principle are shown in Fig. 1, molecule
Sieve module adsorption/desorption schematic diagram.
UVC light in UVC lighting modules is irradiated to photocatalyst material (such as nano-TiO in molecular sieve module2) after, produce
Great amount of hydroxy group free radical (OH) and free electron, OH can react with most VOCs molecules, almost can will be all
VOCs molecules complete oxidation is CO2And H2The nontoxic material such as O, reaction rate is 106~1010mol-1·L·s-1, close to expansion
Dissipate the limiting value 10 of speed10mol-1·L·s-1, OH also can be with intermediate product sustained response, until generation H2O and CO2, make
Macromolecular in VOCs is decomposed into small molecule, and at the same time, ozone enters molecular sieve inside modules, and it is anti-that oxidation occurs with adsorbate
Should.It is to make full use of the high-energy of photon that UVC light, which excites oxidation, with O3、O2、H2O2Or air is as oxidant, effect of irradiation
Lower generation hydroxyl radical free radical (OH).
In the desorption process of the present invention, h during photocatalysis+Depth light is carried out with OH isoreactivities group to VOCs molecules to urge
Change oxidation, the CO of generation2And H2The nontoxic material such as O, constantly escape, and spread from molecular sieve module, so as to complete pair
VOCs adsorption-photocatalytic degradation.At the same time, UVC light excites oxidation, O3Caused OH, also can be to molecular sieve module
Oxidation occurs for the intermediate product that the VOCs of upper absorption and photocatalysis are formed.
Therefore, UVC light decomposes, UVC photocatalysis oxidation reactions and ozonidation coordinate progress, to molecular sieve module institute
The VOCs macromoleculars of absorption carry out online real-time effect, and, due to before VOCs gases enter the absorption of molecular sieve module, being catalyzed
The irradiation of UVC light and ozone oxidation in oxidation unit, have considerably reduced the VOCs gas concentrations for being available for absorption, therefore, have taken off
Attached speed is more than the rate of adsorption, it is ensured that molecular sieve module long-term stable operation is without adsorption saturation, complete sustainable work, no
Produce solid waste, also without being separately desorbed.
The present invention provides a kind of middle low concentration VOCs gas treatment equipments, including：Casing, its both ends are respectively equipped with air inlet
And exhaust outlet, in casing, it is disposed with along air inlet to exhaust outlet direction：Filter, it is filter screen or filter membrane, located at case
At internal air inlet；At least two processing units, each processing unit are made up of molecular sieve module and UVC lighting modules；The UVC
Lighting module is made up of some low pressure UVC lamps, is respectively arranged at the both sides of molecular sieve module；Heat abstractor, at described two
Between reason unit；Ozone filter, the exhaust ports in casing；VOCs concentration monitoring devices, located at casing exhaust ports.
Further, the molecular sieve module is made up of sorbing material and photocatalyst material.
Also, described photocatalyst material is nano-TiO2, sorbing material in the molecular sieve module for nano zeolite or
Flyash.
Further, in the processing unit adjacent with ozone filter, molecular sieve module is close to ozone equipment side
Low pressure UVC lamps are unicast peak low pressure UVC lamps.
Preferably, between processing unit and filter, it is additionally provided with heat abstractor.
Preferably, if the heat abstractor is dry heat pipe.
Also, the casing or cabinet wall are made of minute surface SUS304 materials.
Using the VOCs gas treatment equipments of the present invention, after particulate matter is removed by filtration in VOCs gases, into processing unit,
VOCs gases is excited oxidation reaction, molecular sieve adsorption and desorption by light decomposition, ozone oxidation, UVC light, carried out
Oxidation is sufficiently decomposed, after decomposing remaining ozone by unicast peak UVC light and being filtered by ozone filter, detection row
Put.
In actual use, the VOCs gas temperatures that can be handled as needed are adjusted, if VOCs gas temperatures
Higher than 60 DEG C, then temperature control device radiating can be set, before treatment reduce VOCs gas temperatures, to ensure that UVC luminous environments are stable,
Treatment effect is good.
The present invention sets temperature regulating devices in two groups of processing units, UVC illumination can be avoided excessive with caused waste heat and
Impact effect, if derived heat is more, it also may be recovered utilization, more save；The present invention passes through minute surface material and UVC light
The regulation exported by force, optimize the light-catalysed treatment effeciencies of traditional UVC, improve the capacity usage ratio of UVC lamps, extend UVC fluorescent tubes
Service life.
The present invention utilizes UVC light ozone decomposition and ozone filter, avoids the occurrence of because ozone concentration is too high and causes
Discharge the problem of exceeded, meanwhile, in the VOCs density real-time monitoring devices that exhaust section is set, it is ensured that emission compliance.
Compared with prior art, the present invention has the advantages that：
1) present invention is acted synergistically by molecular sieve module and the irradiation of UVC light, and VOCs gases pass through before being adsorbed
The decomposition of UVC light, UVC light excite the effect of oxidation reaction and ozone oxidation, reduce concentration, then be adsorbed to molecular sieve module；With
Absorption is almost synchronous, UVC photons and nano-TiO2Photocatalysis oxidation reaction occurs for photocatalyst, by the macromolecular in VOCs gases point
Solve as small molecule.Meanwhile high-concentrated ozone has strong oxidation and good spatial dispersion, ozone oxidation is urged with UVC light
To change, light decomposition synergy, online desorption is realized to the adsorbate in molecular sieve module, this greatly improves efficiency, so as to
Reach good treatment efficiency, to the treatment effects of VOCs gases up to more than 90%.
2) in the present invention, molecular sieve Modular surface coats photocatalyst material, can greatly enhance degraded VOCs synergy,
Multiple degrading VOCs, the VOCs concentration into molecular sieve module is greatly reduced；UVC photocatalysis makes the VOCs by base material absorption degrade
Thing discharges new adsorption site position constantly to photocatalyst material surface migration, avoids and is deposited on molecular sieve inside modules
Or photocatalyst material surface, so as to solve the problems, such as photocatalyst material inactivation, molecular sieve module adsorption saturation.
3) present invention is utilized, the middle low concentration VOCs gases to be volatilized in production can be handled well, and runs, safeguard simply, no
Need noble metal catalyst and gas compression, burn process, non-secondary pollution, advantage of lower cost is low in environmental protection industry (epi)
Concentration VOCs gas treatments have great practical value.
4) apparatus of the present invention total system takes up an area small, can arrange to save the throwing of pipeline and wind turbine layout indoors or roof
Enter, and effectively reduce the power consumption of induced draft fans.When actual producing line is put into, can flexibly it select, upgrading optimization is also very convenient, input
Cost is controllable, has good cost performance.
5) O＆M cost of the present invention is low, and operating efficiency is high, without any catalyst, additive, be also not required to gas compression and
High temperature incineration.Molecular sieve adsorption, the desorption sustainable use of module, do not produce solid waste, energy consumption is relatively low；Securely and reliably, complete set
Risk of the system without burning, blast.
Brief description of the drawings
Fig. 1 is molecular sieve module adsorption/desorption schematic diagram of the present invention.
Fig. 2 is the VOCs gas treatment equipment schematic diagrames in the embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Referring to Fig. 2, a kind of middle low concentration VOCs gas treatment equipments of the invention, including：Casing 1, its both ends are set respectively
There are air inlet 101 and exhaust outlet 102；Casing interior edge air inlet 101 is sequentially provided with filter 2, it is filter to exhaust outlet 102
Net or filter membrane, at air inlet 101 in casing 1；First, second processing unit 3,3 ', first processing units 3 are by molecular sieve mould
Block 31 and UVC lighting modules 32 form；The UVC lighting modules 32 are made up of some low pressure UVC lamps, are respectively arranged at molecular sieve
The both sides of module 31；Second processing unit 3 ' is made up of molecular sieve module 31 ' and UVC lighting modules 32 ', 33 ', heat abstractor 4,
Between first, second processing unit 3,3 '；Ozone filter 5, at exhaust outlet in casing 102；Wherein,
In two processing units 3 ', molecular sieve module leans on the low pressure UVC lamps group 33 ' of the side of ozone filter 5, transmitting unicast peak
253.7nm ultraviolet lights, it is mainly used in carrying out molecular sieve module light-catalyzed reaction and decomposes residual ozone；VOCs concentration monitors fill
Put 6, at casing exhaust outlet 102, connect digital displaying meter, at the same can with environmental administration's networking transport data, it is real-time to realize
Monitoring.
Further, heat abstractor 4 ' is arranged between particulate matter filter device 2 and first processing units 3.
Further, molecular sieve module described in the present embodiment is prepared by suspended nitride method：With nano-TiO2Powder is (such as
DegussaP-25/30nm it is) raw material, with ultrasonic wave by nano-TiO2Powder is scattered in water or organic solvent, and TiO is made2It is outstanding
Supernatant liquid, then by TiO by the way of dip-coating or spraying2Sorbing material surface coated in briquet, 30~50nm of thickness,
Solidification, is made molecular sieve module.
Or the molecular sieve module is prepared by mixing coating process：By nano zeolite or flyash bulky grain and nanometer
TiO2Powder (Millennium PC105/15~25nm) mixes, and makes TiO2It is attached to the table of nano zeolite or fly ash grain
Face, then it is compressed to molecular sieve module.
A kind of processing method of middle low concentration VOCs gases of the present invention, comprises the following steps：
1) filter
It is 300ppm by concentration, flow velocity 1.2m/s, the middle low concentration VOCs gases based on aldehydes component pass through filter screen
Or filter membrane is filtered, particulate matter is removed；
2) first processing
Decompose, oxidation：Enter first processing units to the VOCs gases after filtering, carry out UVC light irradiation, UVC photons with
Light decomposition occurs for VOCs gases, light excites oxidation, ozone oxidation and light-catalyzed reaction, and treatment temperature is 20~60 DEG C.
Adsorption and desorption：VOCs gases pass through by sorbing material and nano-TiO2Molecular sieve module made of photocatalyst, carry out
Absorption and desorption, processing time about 200ms, VOCs gas concentrations are reduced to 180ppm, reach 40% treatment effeciency；
3) handle again
Decompose, oxidation：The VOCs gases handled by step 2) enter second processing unit, carry out UVC light irradiation, UVC
With VOCs gases light decomposition occurs for photon, light excites oxidation, light-catalyzed reaction and ozone oxidation reaction, and treatment temperature is 20~60
℃。
Adsorption and desorption：VOCs gases pass through by sorbing material and nano-TiO2Molecular sieve module made of photocatalyst, carry out
Absorption and desorption, processing time about 400ms；
4) filter and discharge
Treated VOCs gases decompose remaining ozone through unicast peak 253.7nm ultraviolet lights, filter dress by ozone
Put, then discharged after VOCs Concentration Testings, temperature of exhaust gas<60 DEG C, VOCs gas concentrations are reduced to 0ppm, reach
100% treatment effeciency.
It is limited that UVC light irradiation in the present embodiment is that UVC fluorescent tubes and electric-control system by coloured silk melt electric light source technology (Shanghai)
Company is provided, and the reaction equation in Photocatalytic Oxidation (process containing ozone oxidation) is listed in table 1.
Table 1
| Oxidation-reduction potential | Reaction equation | Oxidation-reduction potential | Reaction equation |
| 2.85E0V | OH·+H++ e=H2O | 1.229E0V | O2+4H++ 4e=2H2O |
| 2.442E0V | O(g)+2H++ 2e=H2O | 2.0E0V | OH·+ e=OH- |
| 2.07E0V | O3+2H++ 2e=O2+H2O | 1.59E0V | O(g)+2H2O+2e=2OH- |
| 1.776E0V | H2O2+2H++ 2e=H2O | 1.24E0V | O3+2H2O+2e=O2+2OH- |
| 1.7E0V | HO2+3H++ 3e=2H2O | 0.7E0V | O2+2H2O+4e=4OH- |
Low concentration VOCs gas processing capability sample calculations in the present embodiment：
UVC light decompose, light excite oxidation, ozone oxidation, light-catalyzed reaction, VOCs absorption and desorption, be a synthesis,
Dynamically, the process of interaction, and its concentration is also constantly changing in VOCs gas traveling process, so mostly showing in engineering as following
Example, carry out approximate calculation.
With reference to figure 2, stated for ease of calculating, if A, B, C area, if 24, UVC lamps, rated output power 70W/ is only, actual
Only, 50W/ × 24=1200W of subtotal, it exports 210~280nm energy integrals A, C area UVC luminous powers about to work output 50W/
For 6000uW/cm2, B areas UVC luminous powers are about 11000uW/cm2.Ozone concentration A, C areas are about 320ppm, and B areas are about 550ppm
(explanation：Above-mentioned data are according to the actual reference data measured of similar application, have ignored the factors such as distance, angle).
Set A, B, C area inner chamber as length be respectively 0.4m, 0.8m, 0.4m, overall length 1.6m；Lumenal cross-section be 1m ×
1m。
The specific surface area a of molecular sieve module 4 is set as 300m2/ g, thickness H=0.10m, cross section S=0.9m × 0.9m
=0.81m2, adsorb VOCs density p b=50kg/m3, because of online desorption in real time, its adsorption saturation, quiet activity a=1/ are not considered
Hour.
Then its adsorption capacity X is estimated as per hour：
X=a × [(H × S) × 2] × ρ b=1/ hours × [(0.10m × 0.81m2)×2]×50kg/m3=8.1kg/ is small
When
In absorption simultaneously, light decompositions that is synchronously carried out in process chambers, photocatalysis, ozone oxidation, light, which excite, aoxidizes etc.
Work, 4.05kg/ hours are estimated as by the 50% of adsorbance.
Therefore, the ability of the processing unit processing VOCs gases of the present embodiment is：
Light decomposition, photocatalysis, ozone oxidation, light excite oxidation 4.05kg/ hours+absorption 8.1kg/ hours=12.15kg/
Hour, drop volume about 50% is applied, and is roughly equal to 6kg/ hours.
Assuming that VOCs the gas flow rate 1.15m/s, air quantity 6600m that need to handle3/ hour, VOCs gas concentration 300ppm, slightly
Calculate reduced mass concentration 300mg/m3, VOCs gases passage time about 1.15s in process chambers, then need processing VOCs gases total
Measure and be：
1.15m/s×1.6m3(treatment region segment length 1.6m, internal diameter section 1m × 1m) × 300mg/m3× 3600s/ hours ÷
1000000mg/kg=1.99kg/ hour.
VOCs amounts can be handled：6kg/ hours>VOCs amounts should be handled：1.99kg/ hour
It can be seen that the disposal ability of the present embodiment is much larger than the gas gross that need to be handled, so, the VOCs gases of middle low concentration
Sufficiently absorption and photochemical treatment are can obtain, reaches good treatment effect.
Further, if entered VOCs gas temperatures are 100 DEG C, with 6600m3/ hour flow estimation, take pressurization by compressed air ratio
Thermal capacitance C=1.004kJ/ (kg DEG C).By formula △ E=C × m × △ T, wherein △ E are heat exchange amount, and m is the quality of gas, △
T is temperature drop-out value, 100 DEG C -50 DEG C=50 DEG C, by 1.295kg/m3Handled gaseous mass meter, need to export heat per hour
For
1.004kJ/(kg·℃)×1.295kg/m3×6600m3× 50 DEG C=429060kJ/ hours
Therefore, it is more considerable by used heat reuse derived from heat pipe.
If entered VOCs gas temperatures<50 DEG C, then it need not separately arrange heat pipe heat radiation.
If entered VOCs gas temperatures in 60~100 DEG C of sections, and in engineering in order to it is cost-effective, do not use heat pipe to dissipate
Heat, UVC light sources now can also use low pressure amalgam vapour lamp, and its power density is higher, tolerance more high environment temperature, can be 60~100
DEG C good steady operation in section.
Claims (20)
1. a kind of processing method of middle low concentration VOCs gases, comprises the following steps：
1) filter
Middle low concentration VOCs gas of the volumetric concentration in below 800ppm is filtered by filter screen or filter membrane, dispels particle
Thing；
2) first processing
Decompose oxidation：VOCs gases after filtering enter the first processing region, carry out UVC light irradiation, UVC photons and VOCs gas
Body occurs photolysis reactionses, ozone oxidation and UVC light and excites oxidation reaction, and treatment temperature is 20~100 DEG C；
Adsorption and desorption：VOCs gases pass through molecular sieve module, VOCs gases made of sorbing material and photocatalyst material and inhaled
Enclosure material is adsorbed, and oxidation and photolysis reactionses are excited with dual waves ultraviolet light generation photochemical catalytic oxidation, ozone oxidation, UVC light, from
It is desorbed in molecular sieve module；
3) handle again
Decompose, oxidation：The VOCs gases handled by step 2) enter second processing region, are irradiated by UVC light, UVC photons
Photolysis reactionses, ozone oxidation and UVC light occurs with VOCs gas molecules and excites oxidation reaction, treatment temperature is 20~100 DEG C；
Adsorption and desorption：VOCs gases after processing pass through molecular sieve module, VOCs made of sorbing material and photocatalyst material
Gas is adsorbed material absorption, and photocatalysis oxidation reaction, ozone oxidation and photolysis reactionses occur with dual waves ultraviolet light, from point
It is desorbed in son sieve module；
4) filtering ozone, discharge are decomposed
Residual ozone in the gas handled by step 3) decomposes through unicast peak UVC light, ozone filter filters, after testing
After discharged, temperature of exhaust gas<60 DEG C, the volumetric concentration of VOCs gases is less than 10ppm in discharge gas.
2. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that the VOCs gases that need to be handled
When temperature is more than 100 DEG C, in step 2), the temperature of VOCs gases is adjusted to 20~60 DEG C.
3. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that step 2) and step 3)
In, VOCs processing time is 1~3s altogether.
4. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that step 2) and step 3) institute
It is dual waves ultraviolet light to state UVC photons, and main crest is 253.7nm and 185nm respectively；The main crest of the unicast peak UVC light is
253.7nm。
5. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that the UVC light is irradiated
Cheng Zhong, Output optical power intensity can be adjusted arbitrarily.
6. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that in the molecular sieve module
Photocatalyst material be coated in sorbing material surface.
7. the processing method of middle low concentration VOCs gases according to claim 1, it is characterised in that the molecular sieve module
In, photocatalyst material is coated in sorbing material surface, thickness 30-50nm, or the photocatalyst material and sorbing material
Bulk is pressed into after particle mixing.
8. according to the processing method of any one of the claim 1-7 middle low concentration VOCs gases, it is characterised in that described light
Catalyst material is nano-TiO2。
9. according to the processing method of any one of the claim 1-8 middle low concentration VOCs gases, it is characterised in that the molecule
The sorbing material sieved in module is nano zeolite or flyash.
10. middle low concentration VOCs gas treatment equipments according to claim 9, it is characterised in that the molecular sieve module
Prepared by suspended nitride method：With ultrasonic wave by nano-TiO2Powder is scattered in water or organic solvent, and nano-TiO is made2Suspend
Liquid, then by the way of dip-coating or spraying, by nano-TiO2On sorbing material coated in briquet, divided after solidification
Son sieve module.
11. middle low concentration VOCs gas treatment equipments according to claim 9, it is characterised in that the molecular sieve module
Prepared by mixing coating process：By nano zeolite or the particle and nano-TiO of flyash2Powder mixes, and makes nano-TiO2It is attached to
Nano zeolite or fine coal gray surface, are then compressed to molecular sieve module.
12. according to the processing method of any one of the claim 1-9 middle low concentration VOCs gases, it is characterised in that carrying out
Before step 4), repeat step 3) processing procedure.
A kind of 13. middle low concentration VOCs gas treatment equipments, it is characterised in that including,
Casing, its both ends are respectively equipped with air inlet and exhaust outlet；
In casing, it is disposed with along air inlet to exhaust outlet direction：
Filter, it is filter screen or filter membrane, at air inlet in casing；
At least two processing units, each processing unit are made up of molecular sieve module and UVC lighting modules；The UVC lighting modules
It is made up of some low pressure UVC lamps, is respectively arranged at the both sides of molecular sieve module；
Heat abstractor, between two processing unit；
Ozone filter, the exhaust ports in casing；
VOCs concentration monitoring devices, located at casing exhaust ports.
14. middle low concentration VOCs gas treatment equipments according to claim 13, it is characterised in that the molecular sieve module
It is made up of sorbing material and photocatalyst material.
15. middle low concentration VOCs gas treatment equipments according to claim 14, it is characterised in that the photocatalyst material
For nano-TiO2。
16. middle low concentration VOCs gas treatment equipments according to claim 14, it is characterised in that the molecular sieve module
Sorbing material be nano zeolite or flyash.
17. middle low concentration VOCs gas treatment equipments according to claim 13, it is characterised in that filled being filtered with ozone
Put in adjacent processing unit, molecular sieve module close to the low pressure UVC lamps of ozone filter side be unicast peak low pressure UVC
Lamp.
18. middle low concentration VOCs gas treatment equipments according to claim 13, it is characterised in that in processing unit and mistake
Between filtering device, heat abstractor is additionally provided with.
19. middle low concentration VOCs gas treatment equipments according to claim 13, it is characterised in that the heat abstractor is
If dry heat pipe.
20. the middle low concentration VOCs gas treatment equipments according to claim any one of 13-18, it is characterised in that described
Casing or cabinet wall are made of minute surface SUS304 materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710895296.1A CN107569987A (en) | 2017-09-28 | 2017-09-28 | A kind of processing method and processing device of middle low concentration VOCs gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710895296.1A CN107569987A (en) | 2017-09-28 | 2017-09-28 | A kind of processing method and processing device of middle low concentration VOCs gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107569987A true CN107569987A (en) | 2018-01-12 |
Family
ID=61038855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710895296.1A Pending CN107569987A (en) | 2017-09-28 | 2017-09-28 | A kind of processing method and processing device of middle low concentration VOCs gases |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107569987A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392938A (en) * | 2018-05-11 | 2018-08-14 | 宁波飞虹文化用品有限公司 | A kind of intaglio printing VOCs Processing tecchnics and its equipment |
| CN111298598A (en) * | 2019-12-31 | 2020-06-19 | 苏州中科百奥科技发展有限公司 | VOCs adsorption and catalytic oxidation method and device |
| CN111437723A (en) * | 2020-05-15 | 2020-07-24 | 四川轻化工大学 | Blocking and adsorbing integrated device for VOC gas |
| CN111467885A (en) * | 2020-03-09 | 2020-07-31 | 浙江工业大学 | VOCs adsorption-plasma catalytic regeneration device, treatment system and process |
| CN112426878A (en) * | 2020-10-22 | 2021-03-02 | 浙江大学 | Method and system for catalytic degradation of nitrogen/sulfur-containing VOCs (volatile organic compounds) by absorption and liquid phase |
| CN113457367A (en) * | 2021-06-17 | 2021-10-01 | 南京大学 | Low-concentration VOCs adsorption-in-situ temperature-changing catalytic ozonation treatment method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201684212U (en) * | 2010-03-05 | 2010-12-29 | 上虞兴盛炭业科技有限公司 | Air sterilization purifier |
| CN103551032A (en) * | 2013-11-20 | 2014-02-05 | 河南城建学院 | Three-dimensional type photocatalysis air purifier |
| CN104083983A (en) * | 2014-07-21 | 2014-10-08 | 深圳市开天源自动化工程有限公司 | Device and method for decomposing air pollutants by dual-wave-length ultraviolet rays |
| CN203955034U (en) * | 2014-07-23 | 2014-11-26 | 重庆三峡环保（集团）有限公司 | A kind of photocatalysis off-gas cleaning equipment |
| CN205288046U (en) * | 2015-09-16 | 2016-06-08 | 王颖 | Photolysis deodorizing device |
| CN106823781A (en) * | 2017-01-10 | 2017-06-13 | 清华大学 | A kind of air purifier for removing indoor VOCs and preparation method thereof |
| CN206240325U (en) * | 2016-11-05 | 2017-06-13 | 江苏景中景工业涂装设备有限公司 | Photooxidation catalytic waste gas process environmental protecting device |
| CN107115790A (en) * | 2017-07-07 | 2017-09-01 | 中山市中开环保设备制造有限公司 | A kind of VOCs emission-control equipments |
| CN207413119U (en) * | 2017-09-28 | 2018-05-29 | 彩融电光源技术（上海）有限公司 | A kind of processing unit of middle low concentration VOCs gases |
-
2017
- 2017-09-28 CN CN201710895296.1A patent/CN107569987A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201684212U (en) * | 2010-03-05 | 2010-12-29 | 上虞兴盛炭业科技有限公司 | Air sterilization purifier |
| CN103551032A (en) * | 2013-11-20 | 2014-02-05 | 河南城建学院 | Three-dimensional type photocatalysis air purifier |
| CN104083983A (en) * | 2014-07-21 | 2014-10-08 | 深圳市开天源自动化工程有限公司 | Device and method for decomposing air pollutants by dual-wave-length ultraviolet rays |
| CN203955034U (en) * | 2014-07-23 | 2014-11-26 | 重庆三峡环保（集团）有限公司 | A kind of photocatalysis off-gas cleaning equipment |
| CN205288046U (en) * | 2015-09-16 | 2016-06-08 | 王颖 | Photolysis deodorizing device |
| CN206240325U (en) * | 2016-11-05 | 2017-06-13 | 江苏景中景工业涂装设备有限公司 | Photooxidation catalytic waste gas process environmental protecting device |
| CN106823781A (en) * | 2017-01-10 | 2017-06-13 | 清华大学 | A kind of air purifier for removing indoor VOCs and preparation method thereof |
| CN107115790A (en) * | 2017-07-07 | 2017-09-01 | 中山市中开环保设备制造有限公司 | A kind of VOCs emission-control equipments |
| CN207413119U (en) * | 2017-09-28 | 2018-05-29 | 彩融电光源技术（上海）有限公司 | A kind of processing unit of middle low concentration VOCs gases |
Non-Patent Citations (1)
| Title |
|---|
| 刘小平: "《制药工程专业导论》", 湖北科学技术出版社, pages: 182 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392938A (en) * | 2018-05-11 | 2018-08-14 | 宁波飞虹文化用品有限公司 | A kind of intaglio printing VOCs Processing tecchnics and its equipment |
| CN111298598A (en) * | 2019-12-31 | 2020-06-19 | 苏州中科百奥科技发展有限公司 | VOCs adsorption and catalytic oxidation method and device |
| CN111467885A (en) * | 2020-03-09 | 2020-07-31 | 浙江工业大学 | VOCs adsorption-plasma catalytic regeneration device, treatment system and process |
| CN111437723A (en) * | 2020-05-15 | 2020-07-24 | 四川轻化工大学 | Blocking and adsorbing integrated device for VOC gas |
| CN112426878A (en) * | 2020-10-22 | 2021-03-02 | 浙江大学 | Method and system for catalytic degradation of nitrogen/sulfur-containing VOCs (volatile organic compounds) by absorption and liquid phase |
| CN113457367A (en) * | 2021-06-17 | 2021-10-01 | 南京大学 | Low-concentration VOCs adsorption-in-situ temperature-changing catalytic ozonation treatment method |
| CN113457367B (en) * | 2021-06-17 | 2023-03-10 | 南京大学 | Low-concentration VOCs adsorption-in-situ temperature-changing catalytic ozonation treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107569987A (en) | A kind of processing method and processing device of middle low concentration VOCs gases | |
| CN203642363U (en) | Multifunctional photochemical air purifying equipment | |
| CN104587817B (en) | VOC decomposition composite-purifying processing apparatus and method | |
| CN105521705A (en) | Method for treating organic waste gas through low-temperature plasma concerted catalysis | |
| CN108273344A (en) | A kind of integrated-type organic waste gas treatment device | |
| CN107042039A (en) | The device and processing method of a kind of dielectric barrier discharge low-temperature plasma concerted catalysis processing organic exhaust gas | |
| CN102814099A (en) | Device and method for purifying total volatile organic compounds | |
| CN102698578A (en) | Process for synchronously removing nitrogen oxide, dioxin and offensive odor in flue gas from waste incineration | |
| CN203899429U (en) | Catalytic low-temperature plasma device for processing malodorous gas | |
| CN206343045U (en) | A kind of novel ozone joint ultraviolet photolysis processing high-concentration organic waste gas device | |
| CN206965478U (en) | A kind of photoelectricity ion deodorizing device | |
| CN207413119U (en) | A kind of processing unit of middle low concentration VOCs gases | |
| CN209917632U (en) | Low concentration VOCs organic waste gas purifying equipment | |
| CN103585881A (en) | Indoor air purifying device | |
| CN206950990U (en) | A kind of photo catalysis reactor and equipment for treating industrial waste gas | |
| CN108993141A (en) | A kind of emission-control equipment | |
| CN206082107U (en) | Industry organic waste gas purification device | |
| CN212142125U (en) | Device for degrading VOCs (volatile organic compounds) by ultraviolet illumination and monatomic catalyst | |
| CN110559827B (en) | Treatment process of papermaking waste gas | |
| CN209020111U (en) | A kind of VOCs treatment device using concave convex rod absorption and superparamagnetic field magnetic solution | |
| CN207622157U (en) | A kind of ultraviolet catalytic Degradator | |
| CN204619702U (en) | A kind of purifier containing low concentration VOC waste gas | |
| CN207307612U (en) | A kind of photodissociation photocatalysis equipment for treating industrial waste gas | |
| KR20060035721A (en) | Device for purifying used air containing harmful substances | |
| KR101918938B1 (en) | Volatile Organic Compounds decompose device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180112 |
|
| WD01 | Invention patent application deemed withdrawn after publication |