CN109985518A - One kind handling coating automatic assembly line waste gas system based on oxidative free radical - Google Patents
One kind handling coating automatic assembly line waste gas system based on oxidative free radical Download PDFInfo
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- CN109985518A CN109985518A CN201910260114.2A CN201910260114A CN109985518A CN 109985518 A CN109985518 A CN 109985518A CN 201910260114 A CN201910260114 A CN 201910260114A CN 109985518 A CN109985518 A CN 109985518A
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- free radical
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- assembly line
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- 150000003254 radicals Chemical class 0.000 title claims abstract description 124
- 239000011248 coating agent Substances 0.000 title claims abstract description 45
- 238000000576 coating method Methods 0.000 title claims abstract description 45
- 230000001590 oxidative effect Effects 0.000 title claims abstract description 35
- 239000002912 waste gas Substances 0.000 title claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 112
- 230000003647 oxidation Effects 0.000 claims abstract description 111
- 239000007789 gas Substances 0.000 claims abstract description 50
- 239000007864 aqueous solution Substances 0.000 claims abstract description 38
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 37
- 239000001301 oxygen Substances 0.000 claims abstract description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003054 catalyst Substances 0.000 claims abstract description 32
- 238000006303 photolysis reaction Methods 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 230000003197 catalytic effect Effects 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000007921 spray Substances 0.000 claims description 29
- 239000000945 filler Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 16
- 241000264877 Hippospongia communis Species 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000006555 catalytic reaction Methods 0.000 claims description 9
- -1 manganese-copper oxide-oxygen Chemical compound 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 6
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 6
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000005751 Copper oxide Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910000431 copper oxide Inorganic materials 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 239000002808 molecular sieve Substances 0.000 claims description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 2
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000012855 volatile organic compound Substances 0.000 abstract description 33
- 238000006243 chemical reaction Methods 0.000 abstract description 26
- 239000007788 liquid Substances 0.000 abstract description 16
- 239000003344 environmental pollutant Substances 0.000 abstract description 15
- 231100000719 pollutant Toxicity 0.000 abstract description 15
- 239000000443 aerosol Substances 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 4
- 239000012071 phase Substances 0.000 description 27
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 238000005192 partition Methods 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 150000003384 small molecules Chemical class 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- UARDEOHIVQISJS-UHFFFAOYSA-N manganese(2+) oxocobalt oxocopper oxygen(2-) Chemical compound [O-2].[Mn+2].[Co]=O.[Cu]=O UARDEOHIVQISJS-UHFFFAOYSA-N 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241001465805 Nymphalidae Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- FWZLXRFUDMNGDF-UHFFFAOYSA-N [Co].[Cu]=O Chemical compound [Co].[Cu]=O FWZLXRFUDMNGDF-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 229930194909 coatline Natural products 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- UBXWAYGQRZFPGU-UHFFFAOYSA-N manganese(2+) oxygen(2-) titanium(4+) Chemical compound [O--].[O--].[Ti+4].[Mn++] UBXWAYGQRZFPGU-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- 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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
- B01D2259/804—UV light
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses one kind to handle coating automatic assembly line waste gas system based on oxidative free radical, including the free radical multi-phase oxidation column and free radical gaseous oxidation case being sequentially arranged by airflow direction, the free radical multi-phase oxidation column is connected to the free radical gaseous oxidation case, the free radical multi-phase oxidation column generates oxidative free radical by injection active oxygen species, and the free radical gaseous oxidation case generates oxidative free radical by photodissociation.VOCs pollutant in occurring gas-gas, solution-air, liquid-liquid, the reaction of gas-solid and aerosol heterogeneous oxidation simultaneously in free radical multi-phase oxidation column, by strong fast degradation, and heterogeneous oxidation-aqueous solution injection active oxygen species regenerate-is formed in tower and excites the benign cycle of strong oxidizing property radical source-heterogeneous oxidation.The composite reactive component efficient capture of oxidative free radical and catalyst that undegraded or not degradable pollutant is then generated by ultraviolet lamp in free radical gaseous oxidation case, and exhaustive oxidation is degraded, without secondary pollution, environmental protection and energy saving.
Description
Technical field
The present invention relates to industrial waste gas processing technology fields, more particularly to a kind of oxidative free radical that is based on to handle coating certainly
Dynamic production line waste gas system.
Background technique
Coating refers to metal and nonmetallic surface protective mulch or decorative layer.With industrial automation technology
Fast development, coating are developed from craft to industrial automation direction, and coating automatic assembly line is more and more extensive to be deep into its people
Economic multiple industrial circles.Coating automatic assembly line mainly by pre-processing electrophoresis line, sealing primary coat line, middle paintings line, face painting line,
Refine line and drying system composition can generate lacquer spraying waste gas and drying exhaust gas in spray painting and drying course respectively, and usually mixing is received
Coating automatic assembly line organic exhaust gas is formed after collection, pollutant component is mainly volatile organic matter (VOCs), including benzene, toluene,
Dimethylbenzene, hexane, heptane, methyl ethyl ketone, ethyl acetate, carbon tetrachloride etc., concentration are about 500~l000mg/m3, much super
Cross environmental protection standard requirement, it is necessary to could qualified discharge by stringent processing.
Currently, the Treatment process of coating organic exhaust gas mainly has: absorption method, flame combustion method, Production by Catalytic Combustion Process, photodissociation method
Deng.Coating automatic assembly line generallys use what conventional activated carbon absorption was combined with catalysis burning according to active carbon adsorption
Treatment process is designed based on absorption and catalysis 2 basic principles of burning, i.e. Adsorption Concentration-catalysis burning is destroyed, using 2
A above active carbon adsorber continuous work, and be used interchangeably between each absorber.This method requires active carbon will periodically not
Disconnected regeneration, the absorption property that otherwise will lead to active carbon are gradually reduced.Therefore it needs to regularly replace active carbon, can also generate work
Property charcoal danger wastes.And flame combustion method handles coating automatic assembly line organic exhaust gas, can generate NOx, tar, dioxin etc.
Toxic by-products, while a large amount of natural gases need to be consumed.Coating automatic assembly line generallys use boiling according to zeolite runner absorption method
Stone runner adsorbs the treatment process combined with thermal accumulating incinerator, is based on 2 basic principle designs of absorption and flame combustion
, i.e., runner Adsorption Concentration-flame combustion is destroyed, and equipment used in this method is expensive, and when operation also needs to consume a large amount of natural gases,
NO can be generated simultaneouslyx, tar, the toxic by-products such as dioxin.
To sum up, existing coating automatic assembly line VOCs treatment technology is high etc. there are secondary pollution and operating cost
Problem increases the production cost of enterprise.It therefore, is a variety of volatile organic contaminants in solution coating automatic assembly line exhaust gas
Purification problem, it is still necessary to develop completely new VOCs treatment technology and system.
Summary of the invention
It is an object of the invention to solve above-mentioned shortcoming and defect existing in the prior art, provide based on oxidation free love
Base handles coating automatic assembly line waste gas system.Processing system of the invention can wave a variety of in coating automatic assembly line exhaust gas
The organic matter exhaustive oxidation degradation of hair property, without secondary pollution, operating cost is lower.
To realize its purpose, the technical solution adopted by the present invention are as follows:
One kind handling coating automatic assembly line waste gas system based on oxidative free radical comprising presses airflow direction successively cloth
The free radical multi-phase oxidation column and free radical gaseous oxidation case set, the free radical multi-phase oxidation column and the free radical gas phase oxygen
Change case connection, the free radical multi-phase oxidation column generates oxidative free radical, the free radical by injection active oxygen species
Gaseous oxidation case generates oxidative free radical by photodissociation.Preferably, the free radical multi-phase oxidation column and the free radical
It is connected between gaseous oxidation case by air hose.
Preferably, the free radical multi-phase oxidation column includes active oxygen species generator and tower body;It is equipped in the tower body
Interconnected first order free radical heterogeneous oxidation area, second level free radical heterogeneous oxidation area and aqueous solution collecting tank, described
Level-one free radical heterogeneous oxidation area is separated by side by side with the second level free radical heterogeneous oxidation area, and the aqueous solution collecting tank is set to
The lower section in the first order free radical heterogeneous oxidation area and the second level free radical heterogeneous oxidation area.Preferably, described first
Grade free radical heterogeneous oxidation area be separated by with the second level free radical heterogeneous oxidation area by partition, the partition with it is described water-soluble
It is spaced between the water surface of liquid collecting tank.
Preferably, the shape of the tower body is cuboid, is made of stainless steel or carbon steel material, the inside of the tower body
Make the rotten anti-coating treatment of epoxy resin.
Preferably, the active oxygen species generator is made of dielectric barrier discharge pipe, generates activity by ionized air
Oxygen molecule.
Preferably, the first order free radical heterogeneous oxidation area be equipped with the waste gas inlet being sequentially arranged along airflow direction,
First order spray thrower and first order catalytic filler layer;The first order spray thrower is connected to the aqueous solution collecting tank, and described
It is additionally provided with first order water pump and first order ejector on the pipeline that level-one spray thrower is connected to the aqueous solution collecting tank, described
Level-one water pump and the first order ejector are sequentially arranged along water (flow) direction, the first order ejector also with the active oxygen
Electronic generator connection.
Preferably, the first order catalytic filler layer is made of the first spherical catalyst, and first catalyst is by mistake
Cross metal oxide, active carbon and clay composition.Preferably, the transition metal oxide include iron, cobalt, manganese, copper, nickel, zinc,
At least one of the oxide of silver.
Preferably, the second level free radical heterogeneous oxidation area is equipped with the catalysis along the second level that airflow direction is sequentially arranged and fills out
The bed of material, second level spray thrower, second level demisting packing layer and gas outlet;The second level spray thrower and the aqueous solution collecting tank
It is connected to, is additionally provided with second level water pump on the pipeline that the second level spray thrower is connected to the aqueous solution collecting tank and the second level is penetrated
Flow device, the second level water pump and the second level ejector be sequentially arranged along water (flow) direction, the second level ejector also with
The active oxygen species generator connection, the gas outlet is connected to the inlet end of the free radical gaseous oxidation case.
Preferably, the second level catalytic filler layer is made of the second spherical catalyst, and second catalyst is by mistake
Cross metal oxide, rare-earth oxide, active carbon and clay composition.Preferably, the transition metal oxide include iron,
At least one of cobalt, manganese, copper, nickel, zinc, oxide of silver.Preferably, the rare-earth oxide include lanthanum, cerium, praseodymium,
At least one of neodymium, oxide of yttrium.
Preferably, the second level demisting packing layer is made of Taylor's filler for flower ring.
Preferably, the free radical gaseous oxidation case includes cabinet, and the cabinet is equipped with inlet end and outlet side, the case
In vivo be equipped with along the first order ultraviolet lamp area that airflow direction is sequentially arranged, first order photodissociation Catalytic Layer, second level ultraviolet lamp area and
Second level photodissociation Catalytic Layer.
Preferably, the purple that first order ultraviolet lamp area and the second level ultraviolet lamp Qu Youneng generation wavelength are 185nm
Outer lamp group at.
Preferably, the shape of the cabinet is cuboid, is made of stainless steel or carbon steel material, the inside of the cabinet
Make the rotten anti-coating treatment of epoxy resin.
Preferably, the first order photodissociation Catalytic Layer and the second level photodissociation Catalytic Layer are by absorbent-type titanium dioxide-two
Manganese oxide-copper oxide-cobalt oxide honeycomb catalyst is constituted.Honeycomb catalyst of the invention can enhance TiO2Adsorb the energy of VOCs
Power, and TiO can be reduced2Photo-generate electron-hole is to compound probability.
Preferably, the honeycomb catalyst the preparation method comprises the following steps: using ceramic honey comb as carrier, utilize H-ZSM-5 molecular sieve
Structure regulating is carried out to titanium dioxide, manganese dioxide, copper oxide and cobalt oxide active component, and titanium dioxide is made by infusion process
Titanium, manganese dioxide, copper oxide and supported by cobalt oxide are in obtained on the ceramic honey comb.Preferably, the specification of the ceramic honey comb
For 100mm × 100mm × 40mm.
The method based on oxidative free radical processing coating automatic assembly line waste gas system, includes the following steps:
(1) start the active oxygen species generator of free radical multi-phase oxidation column, first order water pump, second level water pump and from
By the first order ultraviolet lamp area of base gaseous oxidation case and the ultraviolet lamp in second level ultraviolet lamp area.Aqueous solution in aqueous solution collecting tank
Before respectively enteing first order spray thrower, second level spray thrower by first order water pump, second level water pump, the first order is first passed through
Active oxygen species (the two oxygroup cation O that ejector, second level ejector injection active oxygen species generator generate2 +, ozone
O3), it is formed and absorbs oxidation solution.Then first order catalysis is sprayed into diverging is misty by first order spray thrower, second level spray thrower
Packing layer and second level catalytic filler layer.In packing area, liquid, gas, solid catalyst three-phase are come into full contact with, more in free radical
Excitation generates strong oxidizing property radical source (hydroxyl radical free radical in phase oxidation tower·OH, hydroperoxyl free radical HOO·, super oxygen yin from
Sub- free radical·O2–)。
(2) coating automatic assembly line exhaust gas is by waste gas inlet freedom of entry base multi-phase oxidation column, and exhaust gas is from the first order
Enter the first order catalytic filler layer with adsorption capacity above catalytic filler layer, it is complete in first order free radical heterogeneous oxidation area
It is reacted at gas-gas reaction, gas-liquid reaction, liquid-liquid reactions, gas-solid reaction and aerosol, what strong fast degradation exhaust gas carried
VOCs, is resolved into small molecule by VOCs (benzene,toluene,xylene, hexane, heptane, methyl ethyl ketone, ethyl acetate etc.) pollutant
Organic by-products, CO2And H2O, fraction VOCs and undegraded product are absorbed by chemistry of aqueous solution.It is more by first order free radical
Multi-phase catalytic oxidation in phase oxidation area, most of VOCs are oxidized degradation and absorption.Then, it carries unreacted VOCs and has
Prepared separation channel of the exhaust gas of machine by-product below partition and above aqueous solution enters second level free radical heterogeneous oxidation area.
Exhaust gas enters the second level catalytic filler layer with adsorption capacity below the catalytic filler layer of the second level, and in the second level, free radical is more
Gas-gas reaction, gas-liquid reaction, liquid-liquid reactions, gas-solid reaction and aerosol reaction are continued to complete in phase oxidation area, it is strong to degrade
VOCs, is resolved into small molecule organic by-products, CO by the VOCs pollutant that exhaust gas carries2And H2O, a small amount of VOCs and undegraded production
Object is absorbed by chemistry of aqueous solution.The lasting injection of active oxygen species excites more liquid phase free radicals, and it is water-soluble to continue oxygenolysis
Pollutant in liquid realizes the regeneration of aqueous solution quality recovery, forms heterogeneous oxidation in tower-aqueous solution injection active oxygen species again
Life-excitation strong oxidizing property radical source-again in tower heterogeneous oxidation benign cycle.Carry the exhaust gas warp for the VOCs that is not degraded on a small quantity
After crossing second level demisting packing layer removing water mist, it is discharged from the gas outlet in second level free radical heterogeneous oxidation area, and then enter certainly
By base gaseous oxidation case.
(3) treated that exhaust gas enters under the guidance of air hose for the free radical multi-phase oxidation column by active oxygen species injection
Free radical gaseous oxidation case.In the oxidative free radical of ultraviolet lamp area (first order ultraviolet lamp area and second level ultraviolet lamp area) excitation
Oxidation and catalyst layer (first order photodissociation catalyst layer, second level photodissociation catalyst layer) composite reactive component titanium dioxide-two
Under manganese oxide-copper oxide-cobalt oxide catalysis oxidation synergistic effect, VOCs organic pollutant, which is degraded, is converted into harmless object, clearly
Clean tail gas is discharged from the outlet side of free radical gaseous oxidation case.
The beneficial effects of the present invention are:
(1) present invention handles VOCs pollutant using the free radical multi-phase oxidation column of active oxygen species injection, easy to accomplish
Scale amplification and integrated high-efficiency mineralising remove a variety of VOCs pollutants.The secondary oxidation area series connection of free radical multi-phase oxidation column is set
Meter ensures that residence time of the exhaust gas in tower is greater than 2s, while the lasting injection of active oxygen species excites more liquid phases free
Base, it is ensured that the lasting progress that gas-gas reaction, gas-liquid reaction, liquid-liquid reactions, gas-solid reaction, aerosol react, it is strong to degrade
VOCs pollutant, and realize the regeneration of aqueous solution quality recovery, form heterogeneous oxidation in tower-aqueous solution injection active oxygen species again
Life-excitation strong oxidizing property radical source-again in tower heterogeneous oxidation benign cycle, solve coating automatic assembly line organic exhaust gas
Intractable the difficult problem of environmental protection.
(2) alternating of the ultraviolet lamp layers of the second level of free radical gaseous oxidation case and secondary absorption type photodissociation Catalytic Layer series connection is set
It sets, scale amplification easy to accomplish and integrated high-efficiency mineralising VOCs pollutant, it is ensured that residence time of the exhaust gas in oxidation case
Greater than 2s, the oxidative free radical of ultraviolet lamp generation and the composite reactive component titanium dioxide-two of catalyst can make full use of
Manganese oxide-copper oxide-cobalt oxide, efficient capture, catalysis oxidation super low concentration VOCs pollutant.Meanwhile the oxygen that ultraviolet lamp generates
Changing free love base has modification regeneration effect to catalyst, effectively extends replacement cycle and the service life of catalyst.
Detailed description of the invention
Fig. 1 is the structural representation of the present invention that coating automatic assembly line waste gas system is handled based on oxidative free radical
Figure.
In figure, free radical multi-phase oxidation column 1, free radical gaseous oxidation case 2, air hose 3, active oxygen species generator 11, tower
Body 12, first order free radical heterogeneous oxidation area 13, second level free radical heterogeneous oxidation area 14, aqueous solution collecting tank 15, partition 16,
Aqueous solution 17, waste gas inlet 131, first order spray thrower 132, first order catalytic filler layer 133, first order water pump 134, first
Grade ejector 135, second level catalytic filler layer 141, second level spray thrower 142, second level demisting packing layer 143, gas outlet
144, second level water pump 145, second level ejector 146, cabinet 21, inlet end 22, outlet side 23, first order ultraviolet lamp area 24,
First order photodissociation Catalytic Layer 25, second level ultraviolet lamp area 26, second level photodissociation Catalytic Layer 27.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, the present invention passes through the following example furtherly
It is bright.It should be understood that the embodiment of the present invention is merely to illustrate technical effect of the invention, protection model and is not intended to limit the present invention
It encloses.In embodiment, method therefor is conventional method unless otherwise instructed.
Embodiment 1
Certain auto parts and components Co., Ltd mainly produces auto parts and components, is planned according to the market demand and self-growth, right
Reorganization and expansion is carried out in original Painting Shop, removes 3 manual spray cabinets of existing manual spray line, increases coating automatic assembly line newly
One, coating automatic assembly line organic exhaust gas 20000m is formed after mixed collection3/ h, pollutant component are mainly volatile organic matter
(VOCs), concentration is about 500mg/m3, it has been more than environmental protection standard requirement, it is necessary to could qualified discharge by stringent processing.Using
Of the invention is handled based on oxidative free radical processing coating automatic assembly line waste gas system, as shown in Figure 1.Coating is automatic
Production line 20000m3/ h exhaust treatment system includes the free radical multi-phase oxidation column 1 being sequentially arranged on air hose by airflow direction
With free radical gaseous oxidation case 2, free radical multi-phase oxidation column 1 is connected with free radical gaseous oxidation case 2 by air hose 3.
Free radical multi-phase oxidation column 1 includes active oxygen species generator 11 and tower body 12;Active oxygen species generator 11 by
20 dielectric barrier discharge pipe compositions, general power 10kW, ionized air generate active oxygen species (two oxygroup cation O2 +, ozone
O3);The shape of tower body 12 is cuboid, is made of carbon steel material, and the rotten anti-coating treatment of epoxy resin is made in inside, tower body 12
A length of 8000mm, width 4000mm, a height of 3000mm.First order free radical heterogeneous oxidation area 13, the second level are equipped in tower body 12
Free radical heterogeneous oxidation area 14 and aqueous solution collecting tank 15.First order free radical heterogeneous oxidation area 13 and second level free radical multiphase
Zoneofoxidation 14 is located at the top of aqueous solution collecting tank 15, and first order free radical heterogeneous oxidation area 13 and second level free radical multiphase
Be set side by side between zoneofoxidation 14 and be spaced by partition 16, aqueous solution collecting tank 15 is provided with aqueous solution 17, partition 16 with
There are the intervals of supplied gas circulation between the water surface of aqueous solution 17.
First order free radical heterogeneous oxidation area 13 is equipped with the waste gas inlet 131 being sequentially arranged along airflow direction, the first order
Spray thrower 132 and first order catalytic filler layer 133.First order spray thrower 132 is connected to by water pipe with aqueous solution collecting tank 15;It presses
Water (flow) direction has also been sequentially arranged first order water pump 134 and first order ejector 135 on the water pipe;First order ejector 135 is also
It is connected to by water pipe with active oxygen species generator 11.
First order catalytic filler layer 133 is made of the first catalyst, and the first catalyst is by 55% iron oxide, 5% titanium dioxide
Manganese, 33% active carbon and 7% clay composition (weight percent), the shape of the first catalyst are the sphere of diameter 50mm.
Second level free radical heterogeneous oxidation area 14 be equipped with the second level catalytic filler floor 141 being sequentially arranged along airflow direction,
Second level spray thrower 142, second level demisting packing layer 143 and gas outlet 144.Second level spray thrower 142 by water pipe with it is water-soluble
Liquid collecting tank 15 is connected to, and by water (flow) direction, has also been sequentially arranged second level water pump 145 and second level ejector 146 on the water pipe,
Second level ejector 146 is also connected to by water pipe with active oxygen species generator 11.
Second level catalytic filler layer 141 is made of the second catalyst, and the second catalyst is by 52.6% iron oxide, 7% dioxy
Change manganese, 0.1% lanthanum sesquioxide, 0.1% ceria, 33.2% activated carbon and 7% clay and forms (weight percent), second
The shape of catalyst is the sphere of diameter 50mm.Plastics Taylor's filler for flower ring group that second level demisting packing layer is 51mm by diameter
At.
Free radical gaseous oxidation case 2 includes cabinet 21, and the shape of cabinet 21 is cuboid, is made of stainless steel,
Make the rotten anti-coating treatment of epoxy resin, a length of 4000mm of cabinet 21, width 1150mm, a height of 2400mm in inside.Cabinet 21 is set
There are inlet end 22 and outlet side 23, is equipped in cabinet 21 along the first order ultraviolet lamp area 24 that airflow direction is sequentially arranged, the first order
Photodissociation Catalytic Layer 25, second level ultraviolet lamp area 26 and second level photodissociation Catalytic Layer 27.First order ultraviolet lamp area 24 and the second level are purple
The area Wai Deng 26 is made of the U-shaped vacuum UV lamp that 24 energy generation wavelengths are 185nm respectively, the long 810mm of vacuum UV lamp, power
150W/ branch.Specifically, first order ultraviolet lamp area 24 and second level ultraviolet lamp area 26 are successively arranged 4 purples along airflow direction respectively
Outer lamp layers, each ultraviolet lamp layers install 6 vacuum UV lamps respectively.The gas outlet 144 in second level free radical heterogeneous oxidation area 14
It is connected to by air hose 3 with the inlet end 22 of cabinet 21.
First order photodissociation Catalytic Layer 25 and second level photodissociation Catalytic Layer 27 are by absorbent-type titania-silica manganese-oxidation
Copper-cobalt oxide honeycomb catalyst is constituted, and honeycomb catalyst utilizes H- using 100mm × 100mm × 40mm ceramic honey comb as carrier
ZSM-5 molecular sieve carries out structure regulating to titanium dioxide, manganese dioxide, copper oxide and cobalt oxide active component, passes through infusion process
Preparation, titanium dioxide, manganese dioxide, copper oxide, cobalt oxide load capacity (quality) be respectively 0.1%, 0.05%, 0.01%,
0.01%.Honeycomb catalyst can enhance TiO2The ability of VOCs is adsorbed, and TiO can be reduced2Photo-generate electron-hole is to compound
Probability.
The method based on oxidative free radical processing coating automatic assembly line waste gas system, includes the following steps:
(1) start active oxygen species generator 11, first order water pump 134, the second level water pump of free radical multi-phase oxidation column 1
145 and free radical gaseous oxidation case 2 first order ultraviolet lamp area 24 and second level ultraviolet lamp area 26 ultraviolet lamp.Aqueous solution is received
Aqueous solution in collection slot 15 is respectively enteing first order spray thrower 132, second by first order water pump 134, second level water pump 145
Before grade spray thrower 142, first order ejector 135 is first passed through, second level ejector 146 injects the life of active oxygen species generator 11
At active oxygen species (two oxygroup cation O2 +, ozone O3), it is formed and absorbs oxidation solution.Then by first order spray thrower 132,
Second level spray thrower 142 sprays into first order catalytic filler layer 133 and second level catalytic filler layer 141 in diverging is misty.In filler
Area's liquid, gas, solid catalyst three-phase come into full contact with, and it is free to generate strong oxidizing property for excitation in free radical multi-phase oxidation column 1
Ji Yuan (hydroxyl radical free radical·OH, hydroperoxyl free radical HOO·, ultra-oxygen anion free radical·O2–)。
(2) coating automatic assembly line exhaust gas is by 131 freedom of entry base multi-phase oxidation column 1 of waste gas inlet, and exhaust gas is from the
Enter the first order catalytic filler layer 133 with adsorption capacity above one stage catalyzing packing layer 133, in first order free radical multiphase
Gas-gas reaction, gas-liquid reaction, liquid-liquid reactions, gas-solid reaction and aerosol reaction, strong fast degradation are completed in zoneofoxidation 13
VOCs (benzene,toluene,xylene, hexane, heptane, methyl ethyl ketone, ethyl acetate etc.) pollutant that exhaust gas carries, VOCs points
Solution is at small molecule organic by-products, CO2And H2O, fraction VOCs and undegraded product are absorbed by chemistry of aqueous solution.By first
Multi-phase catalytic oxidation in grade free radical heterogeneous oxidation area 13, most of VOCs are oxidized degradation and absorption.Then, it carries not
The prepared separation channel of reaction VOCs and the exhaust gas of organic by-products below partition 16 and above aqueous solution 17 enters the second level
Free radical heterogeneous oxidation area 14.Exhaust gas enters the second level with adsorption capacity below second level catalytic filler layer 141 and is catalyzed
Packing layer 141, continued to complete in second level free radical heterogeneous oxidation area 14 gas-gas reaction, gas-liquid reaction, liquid-liquid reactions,
VOCs, is resolved into the organic by-product of small molecule by gas-solid reaction and aerosol reaction, the VOCs pollutant that strong exhaust gas of degrading carries
Object, CO2And H2O, a small amount of VOCs and undegraded product are absorbed by chemistry of aqueous solution.The lasting injection excitation of active oxygen species is more
Liquid phase free radical, continue oxygenolysis aqueous solution in pollutant, realize aqueous solution quality recovery regeneration, formed tower in multiphase
Oxidation-aqueous solution injection active oxygen species regenerate-excite strong oxidizing property radical source-again in tower heterogeneous oxidation benign cycle.
The exhaust gas for the VOCs that is not degraded on a small quantity is carried after second level demisting packing layer 143 removes water mist, free radical is more from the second level
The gas outlet 144 in phase oxidation area 14 is discharged.
(3) treated the exhaust gas of free radical multi-phase oxidation column 1 by active oxygen species injection under the guidance of air hose 3 into
Enter free radical gaseous oxidation case 2.In the oxidation of ultraviolet lamp area (first order ultraviolet lamp area 24 and second level ultraviolet lamp area 26) excitation
The oxidation of free love base and catalyst layer (first order photodissociation catalyst layer 25, second level photodissociation catalyst layer 27) composite reactive component
Under the synergistic effect of titania-silica manganese-copper oxide-cobalt oxide catalysis oxidation, VOCs organic pollutant is degraded conversion
For harmless object, clean tail gas is discharged from the outlet side 23 of free radical gaseous oxidation case 2.
The coating automatic assembly line exhaust gas of the said firm is produced through of the invention based on oxidative free radical processing coating automatically
After line waste gas system purified treatment, the VOCs removal rate in mix waste gas stably reaches 95%, meets environmental requirement, solves
The intractable the difficult problem of environmental protection of coating automatic assembly line organic exhaust gas.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. one kind handles coating automatic assembly line waste gas system based on oxidative free radical, which is characterized in that including pressing air-flow side
To the free radical multi-phase oxidation column and free radical gaseous oxidation case being sequentially arranged, the free radical multi-phase oxidation column and the freedom
The connection of base gaseous oxidation case, the free radical multi-phase oxidation column generate oxidative free radical by injection active oxygen species, institute
Free radical gaseous oxidation case is stated by photodissociation to generate oxidative free radical.
2. handling coating automatic assembly line waste gas system based on oxidative free radical as described in claim 1, which is characterized in that
The free radical multi-phase oxidation column includes active oxygen species generator and tower body;The interconnected first order is equipped in the tower body
Free radical heterogeneous oxidation area, second level free radical heterogeneous oxidation area and aqueous solution collecting tank, the first order free radical multiphase oxygen
Change area to be separated by side by side with the second level free radical heterogeneous oxidation area, the aqueous solution collecting tank is set to the first order free radical
The lower section in heterogeneous oxidation area and the second level free radical heterogeneous oxidation area.
3. handling coating automatic assembly line waste gas system based on oxidative free radical as described in claim 1, which is characterized in that
The free radical gaseous oxidation case includes cabinet, and the cabinet is equipped with inlet end and outlet side, is equipped in the cabinet along air-flow
First order ultraviolet lamp area, first order photodissociation Catalytic Layer, second level ultraviolet lamp area and the second level photodissociation catalysis that direction is sequentially arranged
Layer.
4. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 2, which is characterized in that
The first order free radical heterogeneous oxidation area is equipped with the waste gas inlet being sequentially arranged along airflow direction, first order spray thrower and the
One stage catalyzing packing layer;The first order spray thrower is connected to the aqueous solution collecting tank, the first order spray thrower with it is described
First order water pump and first order ejector are additionally provided on the pipeline of aqueous solution collecting tank connection, the first order water pump and described the
Level-one ejector is sequentially arranged along water (flow) direction, and the first order ejector is also connected to the active oxygen species generator.
5. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 2, which is characterized in that
The second level free radical heterogeneous oxidation area is equipped with second level catalytic filler floor, the second level spray being sequentially arranged along airflow direction
Device, second level demisting packing layer and gas outlet;The second level spray thrower is connected to the aqueous solution collecting tank, the second level
Second level water pump and second level ejector, the second level are additionally provided on the pipeline that spray thrower is connected to the aqueous solution collecting tank
Water pump and the second level ejector are sequentially arranged along water (flow) direction, and the second level ejector is also sent out with the active oxygen species
Raw device connection, the gas outlet is connected to the inlet end of the free radical gaseous oxidation case.
6. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 3, which is characterized in that
The first order photodissociation Catalytic Layer and the second level photodissociation Catalytic Layer are by absorbent-type titania-silica manganese-copper oxide-oxygen
Change cobalt honeycomb catalyst to constitute.
7. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 6, which is characterized in that
The honeycomb catalyst the preparation method comprises the following steps: using ceramic honey comb as carrier, using H-ZSM-5 molecular sieve to titanium dioxide, dioxy
Change manganese, copper oxide and cobalt oxide active component and carry out structure regulating, and titanium dioxide, manganese dioxide, oxidation are made by infusion process
Copper and supported by cobalt oxide are in obtained on the ceramic honey comb.
8. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 4, which is characterized in that
The first order catalytic filler layer is made of the first spherical catalyst, and first catalyst is by transition metal oxide, work
Property charcoal and clay composition;Preferably, the transition metal oxide includes in the oxide of iron, cobalt, manganese, copper, nickel, zinc, silver
It is at least one.
9. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 5, which is characterized in that
The second level catalytic filler layer is made of the second spherical catalyst, and second catalyst is by transition metal oxide, dilute
Soil metal oxide, active carbon and clay composition;Preferably, the transition metal oxide include iron, cobalt, manganese, copper, nickel, zinc,
At least one of the oxide of silver;Preferably, the rare-earth oxide includes in the oxide of lanthanum, cerium, praseodymium, neodymium, yttrium
At least one.
10. handling coating automatic assembly line waste gas system based on oxidative free radical as claimed in claim 5, feature exists
In the second level demisting packing layer is made of Taylor's filler for flower ring.
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CN112915739A (en) * | 2021-01-25 | 2021-06-08 | 中山大学 | Heterogeneous catalytic oxidation processing system of organic waste gas and foul smell waste gas |
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