1. Ukwakhiwa kanye nezingxenye eziyinhloko ze-spray paint waste gas
Inqubo yokudweba isetshenziswa kakhulu emishinini, emotweni, emishinini kagesi, ezintweni zasendlini, emikhunjini, ifenisha nakwezinye izimboni.
Penda impahla eluhlaza —— upende wenziwe ngezinto ezingaguquguquki futhi eziguquguqukayo, ezingaguquguquki okuhlanganisa into yefilimu nenye into yefilimu eyisizayo, i-ejenti yokuhlanza eguquguqukayo isetshenziselwa ukuhlambulula upende, ukuze kufezwe injongo yendawo kapende eshelelayo nenhle.
Inqubo yokufafaza ngopende ikhiqiza ikakhulukazi inkungu yepende kanye nokungcoliswa kwegesi yemfucuza ephilayo, upende ngaphansi kwesenzo sokucindezela okukhulu sibe yizinhlayiya, lapho ufutha, ingxenye yopende ayizange ifinyelele endaweni yokufafaza, i-diffusion ne-airflow ukuze yakhe inkungu yepende; I-organic waste gas evela ekuvuvukeni kwe-diluent, i-solvent ye-organic ayinamathiselwe endaweni kapende, upende kanye nenqubo yokuphulukisa izokhipha i-organic waste gas (kubikwe ukuthi amakhulukhulu ama-organic compounds aguquguqukayo, ngokulandelanayo ayingxenye ye-alkane, i-alkanes, i-olefin, i-aromatic compounds, utshwala, aldehyde, ketones, ester, ether, nezinye izinhlanganisela).
2. Umthombo kanye nezici zegesi yokukhipha igesi enamathelayo
Ishabhu yokupenda yezimoto kufanele iqhube upende ngaphambi kokwelashwa, i-electrophoresis kanye nopende wokufutha endaweni yokusebenza. Inqubo kapende ihlanganisa ukupenda kokufuthwa, ukugeleza nokomisa, kulezi zinqubo kuzokhiqiza igesi yemfucuza yemvelo (VOCs) kanye nesifutho sokufutha, ngakho lezi zinqubo zidinga ukufafaza ukwelashwa kwegesi yemfucuza yegumbi likapende.
(1) Igesi emoshayo evela egunjini lokupenda lokufutha
Ukuze kugcinwe indawo yokusebenza yokufafaza, ngokwezinhlinzeko zoMthetho Wokuphepha Nezempilo Kwezabasebenzi, umoya kufanele ushintshwe ngokuqhubekayo egumbini lokufafaza, futhi isivinini sokushintsha umoya kufanele silawulwe ngaphakathi kwebanga (0.25 ~ 1). ) m/s. Ukwakhiwa okuyinhloko kwegesi yokukhipha umoya yi-solvent ye-organic kapende wesifutho, izingxenye zayo eziyinhloko ama-hydrocarbons anuka kamnandi (i-benzene emithathu kanye ne-non-methane isiyonke i-hydrocarbon), i-alcohol ether, i-ester organic solvent, ngoba umthamo wokuqeda wegumbi lokufafaza mkhulu kakhulu. inkulu, ngakho-ke ingqikithi yegesi yemfucuza ekhiqiziwe iphansi kakhulu, imvamisa iba ngu-100 mg/m3. Ngaphezu kwalokho, ukukhishwa kwegumbi lokupenda kuvame ukuqukethe inkungu encane kapende enganakiwe ngokuphelele, ikakhulukazi igumbi lokufafaza lokufafaza ngopende elomile, inkungu kapende ekuphumeni, ingaba yisithiyo sokuchitha ukwelashwa kwegesi, ukwelashwa kwegesi okulahlwayo kufanele kube. ukwelashwa ngaphambi kwesikhathi.
(2) Udoti wegesi ophuma endlini yokomisa
Upende wobuso ngemuva kokufufaza ngaphambi kokoma, ufuna ukugeleza umoya, ifilimu kapende emanzi ye-solvent ye-organic enqubweni yokomisa okuguquguqukayo, ukuze kuvinjelwe ingozi yokuqhuma kwe-solvent organic aggregation, igumbi lomoya kufanele libe umoya oqhubekayo, shintsha isivinini somoya ngokuvamile ukulawula nxazonke. 0.2 m/s, i-exhaust ukwakheka kanye nokwakheka kombhobho wegumbi lopende, kodwa ayinayo inkungu kapende, ingqikithi yegesi yemfucuza yezinto eziphilayo kunegumbi lokufafaza, ngokuya ngevolumu yokukhipha umoya, ngokuvamile egumbini lokufutha igesi yokukhipha igesi cishe izikhathi ezi-2, ingafinyelela ku-300 mg/m3, ngokuvamile exutshwe ne-spray room exhaust ngemva kokwelashwa endaweni eyodwa. Ngaphezu kwalokho, igumbi lokupenda, indawo yokugeza indle kapende ongaphezulu kufanele futhi kukhiphe igesi efanayo yemfucuza yezinto eziphilayo.
(3)Digesi ephumayo ekhalayo
Ukwakheka kwegesi yokumisa imfucuza kuyinkimbinkimbi kakhulu, ngaphezu kwe-solvent ephilayo, ingxenye ye-plasticizer noma i-resin monomer nezinye izingxenye eziguquguqukayo, kodwa futhi iqukethe imikhiqizo yokubola okushisayo, imikhiqizo yokusabela. I-Electrophoretic primer nohlobo lwe-solvent topcoat dryer inokukhishwa kwegesi ephumayo, kodwa umehluko wayo wokwakheka kanye nokugxila mkhulu.
※Izingozi zegesi yokukhipha upende kapende:
Kuyaziwa kusukela ekuhlaziyweni ukuthi igesi engcolile evela egumbini lokufafaza, igumbi lokomisa, igumbi lokuxuba upende kanye negumbi lokuhlanza indle elisezingeni eliphezulu liphansi futhi ligeleza kakhulu, futhi izingxenye eziyinhloko zezinto ezingcolisayo ama-hydrocarbons anephunga elimnandi, ama-alcohol ether kanye ne-ester organic. izincibilikisi. Ngokwe-“Comprehensive Emission Standard for Air Pollution”, ukugcwala kwale gesi engcolile ngokuvamile kungaphakathi komkhawulo wokukhipha. Ukuze ubhekane nezidingo zesilinganiso sokungcoliswa kwezinga elijwayelekile, izimboni eziningi zezimoto zisebenzisa indlela yokukhipha umoya ophakeme. Nakuba le ndlela ingahlangabezana nezindinganiso zamanje zokukhishwa, kodwa igesi yemfucumfucu empeleni ayilashwanga, futhi inani eliphelele lezinto ezingcolisa igesi ezikhishwa umugqa omkhulu wokumboza umzimba lingase libe phezulu kumakhulu amathani, okubangela ukulimala okubi kakhulu umkhathi.
Penda inkungu ku-organic solvent —— i-benzene, i-toluene, i-xylene iyi-solvent enobuthi enamandla, esebenza emoyeni endaweni yokusebenzela, izisebenzi ngemva kokuhogela ngomgudu wokuphefumula zingabangela ubuthi obunzima nobungapheli, ikakhulukazi kubangele ukulimala kwesimiso sezinzwa esimaphakathi ne-hematopoietic. , ukuhogela okuphezulu kwesikhathi esifushane (okungaphezu kuka-1500 mg/m3) womhwamuko we-benzene, kungabangela i-aplastic anemia, ngokuvamile ukuhogela umhwamuko ophansi we-benzene nakho kungabangela ukuhlanza, izimpawu zemizwa njengokudideka.
※Ukukhetha indlela yokwelapha igesi engcolile yopende wesifutho nokunamathela:
Ekukhetheni izindlela zokwelashwa kwe-organic, lezi zici ezilandelayo kufanele zicatshangelwe ngokujwayelekile: uhlobo nokugxilwa kokungcoliswa kwemvelo, izinga lokushisa le-organic exhaust kanye nezinga lokugeleza kokukhipha, okuqukethwe yizinhlayiya, kanye nezinga lokulawula ukungcola okudingeka lifinyelelwe.
1Sthandaza upende ekwelapheni lokushisa kwegumbi
Igesi yokukhipha ephuma egumbini lokupenda, igumbi lokomisa, igumbi lokuxubela upende kanye negumbi lokuhlanza indle elisezingeni eliphezulu liyigesi yokukhipha izinga lokushisa ekamelweni lokugxila okuphansi nokugeleza okukhulu, futhi ukwakheka okuyinhloko kokungcola ama-hydrocarbon anephunga elimnandi, utshwala ne-ether kanye ne-ester organic solvents. . Ngokwe-GB16297 “Comprehensive Emission Standard for Air Pollution”, ukugcwala kwale gesi engcolile ngokuvamile kungaphakathi komkhawulo wokukhipha. Ukuze ubhekane nezidingo zesilinganiso sokungcoliswa kwezinga elijwayelekile, izimboni eziningi zezimoto zisebenzisa indlela yokukhipha umoya ophakeme. Nakuba le ndlela ingahlangabezana nezindinganiso zamanje zokukhishwa, kodwa igesi yemfucuza ikhishwa ngokuyisisekelo ehlanjululwe ngaphandle kokwelashwa, futhi inani eliphelele lezinto ezingcolisa igesi ezikhishwa umugqa omkhulu wokumboza umzimba lingase libe phezulu kumakhulu amathani, okubangela ukulimala okubi kakhulu umkhathi.
Ukuze kuncishiswe ngokuyisisekelo ukukhishwa kokungcola kwegesi ephumayo, izindlela eziningana zokwelapha igesi yokukhipha igesi zingasetshenziswa ngokuhlanganyela ekwelapheni, kodwa izindleko zokwelashwa kwegesi yokukhipha igesi enomthamo omkhulu womoya ziphezulu kakhulu. Njengamanje, indlela yangaphandle evuthiwe iwukuba uqale ugxilise ingqondo (ngesondo le-adsorption-desorption ukuze ugxilise inani eliphelele izikhathi ezingaba ngu-15), ukuze kwehliswe inani eliphelele elizophathwa, bese usebenzisa indlela elimazayo ukwelapha igesi yemfucuza egxilile. Kunezindlela ezifanayo e-China, indlela yokuqala yokusetshenziswa kwe-adsorption (ikhabhoni ecushiwe noma i-zeolite njenge-adsorbent) yokugxila okuphansi, izinga lokushisa legumbi lokufafaza upende i-gas adsorption, ngokuncishiswa kwegesi lokushisa okuphezulu, igesi eyimfucumfucu egxilile kusetshenziswa ukuvutha kwe-catalytic noma indlela yokuvuselela kabusha okushisayo ukwelashwa. Ukuhlushwa okuphansi, izinga lokushisa elivamile lokufafaza upende imfucuza yegesi indlela yokwelashwa kwezinto eziphilayo iyathuthukiswa, ubuchwepheshe basekhaya kulesi sigaba samanje abuvuthiwe, kodwa kufanelekile ukunaka. Ukuze sinciphise ngempela ukungcoliswa komphakathi kwegesi ewudoti enamathelayo, sidinga futhi ukuxazulula inkinga evela emthonjeni, njengokusetshenziswa kwezinkomishi ezijikelezayo ze-electrostatic nezinye izindlela zokuthuthukisa izinga lokusebenzisa izinto zokumboza, ukuthuthukiswa kwezigqoko ezisekelwe emanzini. kanye nezinye izigqoko zokuvikela imvelo.
2Dukwelashwa kwegesi engcolile
Ukomisa igesi yemfucuza ingeyezinga eliphakathi nendawo eliphezulu legesi yemfucuza yokushisa ephezulu, elungele ukwelashwa kwendlela yokuvutha. Ukusabela komlilo kunemingcele emithathu ebalulekile: isikhathi, izinga lokushisa, ukuphazamiseka, okungukuthi, ukushiswa kwezimo ze-3T. Ukusebenza kahle kokwelashwa kwegesi eyimfucuza kuyizinga elanele lokusabela kokusha futhi kuncike ekulawuleni isimo se-3T sokusabela komlilo. I-RTO ingakwazi ukulawula izinga lokushisa lomlilo (820~900℃) kanye nesikhathi sokuhlala (1.0~1.2s), futhi iqinisekise ukuthi ukuphazamiseka okudingekayo (umoya nezinto eziphilayo kuxutshwe ngokugcwele), ukusebenza kahle kokwelashwa kufika ku-99%, futhi izinga lokushisa lemfucuza liphezulu, futhi ukusetshenziswa kwamandla okusebenzayo kuphansi. Iningi lamafekthri ezimoto ase-Japan e-Japan nase-China ngokuvamile lisebenzisa i-RTO ukuze liphathe igesi ephumayo yokomisa (i-primer, i-medium coating, i-top coat drying). Isibonelo, i-Dongfeng Nissan yemoto yabagibeli i-Huadu coating line esebenzisa i-RTO centralized treatment of coating drying exhaust gas effect muhle kakhulu, ihlangabezana ngokugcwele nezidingo zemithetho yokukhipha umoya. Kodwa-ke, ngenxa yokutshalwa kwezimali okuphezulu kwesikhathi esisodwa kwemishini yokwelapha igesi yemfucuza ye-RTO, akukhona ukonga ekuphathweni kwegesi engcolile ngokugeleza kwegesi engcolile encane.
Ngomugqa wokukhiqiza oqediwe oqediwe, lapho imishini eyengeziwe yokwelapha igesi engcolile idingeka, isistimu yokuvutha kwe-catalytic kanye nesistimu yokuvuselela ukushisa okushisayo ingasetshenziswa. Isistimu yokushiswa kwe-catalytic inotshalomali oluncane kanye nokusebenzisa amandla avuthayo aphansi.
Ngokuvamile, ukusetshenziswa kwe-platinum njenge-catalyst kunganciphisa izinga lokushisa le-oxidizing i-organic waste gas libe cishe ku-315 ℃. I-Catalytic combustion system ingasetshenziselwa ukwelashwa kwegesi yemfucuza yokomisa, ikakhulukazi efanelekile ukunikezwa kwamandla okomisa kusetshenziswa izikhathi zokushisisa ngogesi, inkinga ekhona ukuthi ungagwema kanjani ukwehluleka kobuthi be-catalyst. Kusukela kokuhlangenwe nakho kwabanye abasebenzisi, ngopende ojwayelekile wokomisa igesi engcolile, ngokwandisa ukuhlungwa kwegesi engcolile nezinye izinyathelo, kungaqinisekisa ukuthi impilo ye-catalyst yiminyaka engu-3 ~ 5; I-electrophoretic paint drying waste gas kulula ukubangela ubuthi be-catalyst, ngakho-ke ukwelashwa kwegesi ye-electrophoretic yokomisa imfucuza kufanele kuqaphele usebenzisa ukuvutha kwe-catalytic. Enqubweni yokwelashwa kwegesi engcolile kanye nokuguqulwa komugqa wokugcoba umzimba wemoto ye-Dongfeng, igesi engcolile yokomisa kwe-electrophoretic primer iphathwa ngendlela ye-RTO, futhi igesi engcolile yokomiswa kopende phezulu iphathwa ngendlela yokuvutha kwe-catalytic, futhi umphumela wokusetshenziswa kuhle.
※Inqubo yokwelapha igesi yokufaka imfucuza ngopende:
Imboni yokufafaza uhlelo lokwelapha igesi yemfucuza isetshenziswa kakhulu ukuhlanza igumbi lokupeyinta imfucuza yegumbi, ukulashwa kwegesi yemfucuza yefekthri, ukulashwa kwegesi yemfucuza embonini yokukhiqiza imishini, ukulashwa kwegesi yemfucuza yasefekthri ye-Guardrail, ukukhiqizwa kwezimoto kanye nokwelashwa kwegesi ye-4S shop spray room waste. Njengamanje, kunezinqubo ezihlukahlukene zokwelapha, njengalezi: indlela yokufingqa, indlela yokumunca, indlela yokuvutha, indlela ye-catalytic, indlela yokukhanga, indlela yezinto eziphilayo kanye nendlela ye-ion.
1. Windlela yesifutho se-ater + i-activated carbon adsorption kanye ne-desorption + i-catalytic combustion
Ukusebenzisa umbhoshongo wokufutha ukuze ususe inkungu kapende kanye nokuncibilika emanzini, ngemva kwesihlungi esomile, kudivayisi ye-carbon adsorption ecushiwe, efana ne-activated carbon adsorption egcwele, bese uyahlubula (indlela yokuhlubula nge-steam stripping, ukufudumeza kukagesi, ukuhlubula i-nitrogen), ngemva igesi yokuhlubula (ukugxilwa kwekhanda kwenyuke izikhathi eziningi) ngokuhlubula ifeni entuthukweni yomlilo ye-catalytic, ukuvutha ku-carbon dioxide namanzi, ngemva kokuphuma.
2. WI-ater spray + i-activated carbon adsorption kanye ne-desorption + indlela yokutholwa kwe-condensation
Ukusebenzisa umbhoshongo wokufutha ukuze ususe inkungu kapende kanye nokuncibilika emanzini, ngemva kwesihlungi esomile, kudivayisi ye-carbon adsorption ecushiwe, efana ne-carbon adsorption ecushiwe egcwele, bese ekhumula (indlela yokuhlubula nge-steam stripping, ukufudumeza kukagesi, ukuhlubula i-nitrogen), ngemva kwalokho. icubungula i-gas waste adsorption condensation condensation, i-condensate ngokuhlukanisa ukubuyiswa kwento ephilayo ebalulekile. Le ndlela isetshenziselwa ukwelashwa kwegesi engcolile ngokugxila okuphezulu, izinga lokushisa eliphansi kanye nevolumu yomoya ephansi. Kodwa le ndlela yokutshala imali, ukusetshenziswa kwamandla okuphezulu, izindleko zokusebenza, igesi yokukhipha upende kapende "i-benzene emithathu" kanye nenye igesi ephumayo ngokuvamile ingaphansi kuka-300 mg/m3, ukugxila okuphansi, umthamo womoya omkhulu (umthamo womoya womoya wokukhiqiza upende wokukhiqiza izimoto uvame ukuba ngaphezulu. 100000), futhi ngenxa yokuthi umshini wokumboza wezimoto ukhipha ukwakheka kwe-organic solvent, i-solvent yokugaywa kabusha kunzima ukuyisebenzisa, futhi kulula ukukhiqiza ukungcoliswa kwesibili, ngakho-ke ukumboza ekwelashweni kwegesi engcolile ngokuvamile akusebenzisi le ndlela.
3. Windlela yokukhangisa igesi ye-aste
I-adsorption yokwelapha imfucuza kapende yopende ingahlukaniswa ibe i-chemical adsorption kanye ne-adsorption ebonakalayo, kodwa umsebenzi wamakhemikhali wegesi "benzene emithathu" uphansi, ngokuvamile awusebenzisi ukumuncwa kwamakhemikhali. Uketshezi olumuncayo olubonakalayo lumunca ukungaguquguquki kancane, futhi lumunca izingxenye ezinokuhambisana okuphezulu kokushisisa, ukupholisa nokusetshenziswa kabusha ukuze kuhlaziywe ukumuncwa kokugcwala kwendawo. Le ndlela isetshenziselwa ukususwa komoya, izinga lokushisa eliphansi, nokugxilisa ingqondo kancane. Ukufakwa kuyinkimbinkimbi, ukutshalwa kwezimali kukhulu, ukukhetha uketshezi lokumuncwa kunzima kakhulu, kukhona ukungcola okubili.
4. Ai-activated carbon adsorption + imishini ye-UV photocatalytic oxidation
(1): ngqo ngokusebenzisa ikhabhoni ocushiwe adsorption igesi organic, ukuze kuzuzwe izinga ukuhlanzwa 95%, imishini elula, utshalomali encane, operation elula, kodwa kudingeka ngokuvamile esikhundleni carbon ocushiwe, lokuhlushwa low ukungcola, akukho ukululama. (2) Indlela ye-Adsorption: i-organic gas ekukhangiseni kwekhabhoni ecushiwe, i-activated carbon saturated air desorption kanye nokuvuselelwa kabusha.
5.Ai-activated carbon adsorption + imishini ye-plasma enezinga lokushisa eliphansi
Ngemuva kokucushwa kwe-carbon adsorption kuqala, bese kuthi ngezinga eliphansi lokushisa kwe-plasma imishini yokucubungula igesi, izophatha izinga lokukhishwa kwegesi, indlela ye-ion ukusebenzisa i-plasma Plasma (ION plasma) ukucekelwa phansi kwegesi ephilayo, isuse iphunga, ibulale amagciwane, amagciwane, ihlanze. umoya uwukuqhathanisa nobuchwepheshe obuphezulu bamazwe ngamazwe, ochwepheshe basekhaya nakwamanye amazwe babizwa ngokuthi ngomunye wezobuchwepheshe ezine ezinkulu zesayensi yezemvelo ekhulwini lama-21. Ukhiye wobuchwepheshe ukukhishwa kwe-high voltage pulse medium block discharge ngendlela yenani elikhulu le-ion oxygen esebenzayo (i-plasma), ukusebenza kwegesi, ukukhiqiza zonke izinhlobo zama-radicals mahhala asebenzayo, njenge-OH, HO2, O, njll. ., i-benzene, i-toluene, i-xylene, i-ammonia, i-alkane nokunye ukucekelwa phansi kwegesi yemfucuza yemvelo, i-oxidation nokunye ukusabela komzimba namakhemikhali okuyinkimbinkimbi, kanye nomkhiqizo ongenabo ubuthi, gwema ukungcoliswa kwesibili. Ubuchwepheshe bunezici zokusetshenziswa kwamandla okuphansi kakhulu, indawo encane, ukusebenza okulula nokugcinwa, futhi kufanelekile ikakhulukazi ekwelapheni kwamagesi ezingxenye ezihlukahlukene.
Bisifinyezo esifushane:
Manje kunezinhlobo eziningi zezindlela zokwelapha emakethe, ukuze kuhlangatshezwane namazinga okwelapha kazwelonke nawendawo, ngokuvamile sizokhetha izindlela ezimbalwa zokwelashwa ezihlanganiswe ukwelapha igesi ewudoti, ukukhetha ngokuvumelana nenqubo yazo yokwelapha yangempela yokwelashwa.
Isikhathi sokuthumela: Dec-28-2022
