Cov Pa Roj Raug Tshuaj Thiab Cov Tshuaj Rau Cov Khoom Txau Automotive

Cov Pa Roj Raug Tshuaj Thiab Cov Tshuaj Rau Cov Khoom Txau Automotive

Automotive spraying lub rooj muag yog siv los pleev xim rau cov khoom siv deg thiab zas kom qhuav, dav siv hauv tsheb, machinery, kho vaj tse, rooj tog zaum, iav khoom, tshuaj siv tshuaj thiab lwm qhov chaw ntawm kev lag luam deg, xim siv ua haujlwm. Vim tias kev siv zuj zus ntxiv, qhov teeb meem ntawm cov pa qias neeg ua rau nws pib maj mam pib nyiam.

Cov lus sau ntawm cov pa roj hauv lub rooj muag xim muaj zog ntau dua thiab nws muaj qee cov teeb meem ntawm kev tuav pov hwm. Ua ntej tshaj plaws, cov xim pleev xim thiab cua sov yuav tsum tsim tawm thaum cov khoom ntws tawm. Thaum cov khoom siv ua kom qhuav dej ntawm tom qab txau, nws muaj cov organic solvents, qee cov khoom yas los yog cov kabmob rein thiab lwm yam khoom ntaws, thiab suav nrog cov thermal decomposition khoom thiab cov tshuaj tiv thaiv. Tej yam muaj ntau dua.

Rau kev kho mob ntawm chav tsev siv roj cua, vim muaj qhov teeb meem me me xws li lacquer pos huab uas yuav ua rau cov khoom puas yooj yim, cov VOCs sib xyaw ua pa roj yog thawj zaug ua haujlwm xws li cov xim muaj xim thiab tshem tawm cov av tawm ua ntej ua tiav. Feem ntau, cov VOCs feem ntau xyaw siv cov tshuaj tsuag ua ntej.

Txuj ci ua haujlwm ntau rau cov neeg siv: Cov pa roj sib xyaw ua pa yog nkag mus rau hauv kev sib ntau sib txuas ntawm cov pa ciav hlau. Tom qab cov txheej txheej tas lawm, cov pa roj thiab cov kua tso kua dej yog nyob rau hauv kev sib txig sib luag nrog sib nqus los yog sib thiav kom ua tiav lub hom phiaj ntawm kev huv. Tom qab cov pa roj carbon lim dej tas lawm, nws yog dewatered los ntawm cov phom defogging.

Tshem tawm cov xim muaj hlau, hmoov av VOCs tso pa ntxiv kom huv. Cov hau kev uas siv tau yog:

Photocatalytic Oxidation: Cov pa oxidation yog catalyzed los ntawm lwm lub teeb pom. Cov tshuaj oxidation kev phom sij yog cov pa hluav taws xob thiab cov cua ua tus catalyst. Nrog lub teeb ua lub zog, cov teeb meem organic yog degraded rau hauv CO2 thiab H2O.

Heterogeneous Catalytic Oxidation: Ib phau ntawm pa hauv tsev kho tshuab xws li photocatalytic oxidation, UV Diam duab-ntau photolysis, thiab cov oxidants siab. Nws tuaj yeem txhim kho zoo ntawm cov khoom siv organic, thiab cov cuab yeej siv no tuaj yeem tshwm sim rau ntawm qhov kub thiab txias, nrog kev siv nyiaj tsawg, cov khoom me me, thiab kev nyab xeeb.

Cov Pa roj carbon dioxide yog zoo siab: Cov pa roj carbon dioxide yog ua kom muaj pa roj carbon dioxide nyob rau hauv cov pa roj carbon dioxide thiab oxysting oxidation. hloov dua siab tshiab rau hauv carbon dioxide thiab dej.

RTO Regenerative Combustion: Siv cov khoom siv hluav taws xob kom sov, cov organic molecules yog oxidised rau carbon dioxide thiab dej hauv qhov chaw kub thiab txias kom ua tiav cov qauv, uas muaj kev ua kom muaj kev sib tov.

Raws li ib qho ntawm cov chaw muaj kabmob atmospheric, VOCs tsis yog tsuas yog ib qho tseem ceeb tshaj plaws uas tsim tau PM2.5, tiam sis tseem yog ib qho tseem ceeb ntawm cov cim ntawm cov cim ozone hauv cov txheej txheem ze. Ib txhia kws tshaj lij tau hais tias kom daws tau cov pa phem yav dhau los, peb yuav tsum ua ntej daws qhov teeb meem ntawm VOCs. Yog li, qhov teeb meem ntawm VOCs tau dhau los ua ib qho teeb meem ceev xwm txheej uas yuav tsum tau daws. Ntxiv rau cov tuam txhab lag luam uas tsim VOCs los txhim kho cov cuab yeej qhov kawg thiab cov khoom siv ntsuas, lawv yuav tsum siv cov khoom raw cov ntaub ntawv kom ntau li ntau tau kom txo VOC emissions ntawm qhov chaw.

Kev lag luam rooj tog yog ib qho tseem ceeb ua lag luam rau kev kho cov khoom siv roj av. Muaj ntau ntau cov pa roj carbon cua kub thiab lwm yam. Ntawm lawv, cov khoom siv ntoo, hlau rooj tog thiab cov rooj tog zaum hauv tsev yog qhov loj tshaj (txog 95% ntawm tag nrho cov rooj tog zaum). Hauv cov rooj tog tsim khoom lag luam, txheej txheem txheej txheem yog txheej txheem tseem ceeb rau kev tsim VOCs cov pa tua kab mob, nrog rau kev txau, txhuam, txheej txheej, da dej thiab npuav txheej.

Raws li qhov kev lag luam vaj tse tam sim no muaj kev txhawj xeeb, VOCs feem ntau yog los ntawm kev tsis haum xeeb ntawm cov organic solvents thiab thinners hauv coatings thaum lub sijhawm tha xim. Ntxiv mus, hom thiab cov ntsiab lus ntawm VOCs tawm thaum lub sijhawm siv ntau hom kev sib tsho kuj txawv dua. Thaum txheej xim tib qho, siv cov roj xim tsim cov VOCs ntau tshaj plaws, ua raws li dej ntws coatings thiab hmoov coatings. Tsis tas li ntawd, vim hais tias cov rooj tog txaj txeem yuav tsum muaj cua hlob ua pa, cov pa roj carbon tsheb generated muaj cua loj heev tiam sis tsis muaj concentration, feem ntau tsawg dua 200mg / m3; Yog hais tias nws yog ib qho loj-nplaum txau kab, lub emission concentration tau mus txog 200mg / m3 vim lub siab txau siv. cov saum toj no.

Li ntawd, dab tsi yuav tsum tau ua li cas nrog cov pa roj hauv lub sij hawm tsim khoom siv rooj tog?

Tam sim no, kev kho VOCs nyob rau hauv Suav teb cov rooj tog zaum rooj tog yeej txwv rau kev kho cov xim muaj hlau. Tsuas yog ob peb lub tuam txhab tau ua rau kev kho mob VOCs nyob rau hauv cov pa roj tom qab tshem cov xim muaj hlau.

Cov xim muaj hlau phom thiab cov hmoov ntoo uas tsim los ntawm cov txaj txaj txeem feem ntau yog kho nrog cov kab hlau dej. Kev tshem tawm tagnrho VOC tag nrho tsuas yog 10% mus rau 15%. Cov neeg haus dej ntau ntau tuaj yeem ua kom tiav tom qab txheej txee rau phab ntsa, ntxiv ib feem ntawm cov flocculant tau ntxiv cov xim huab cua purification, thiab tib lub sij hawm tuaj yeem tshem tau ib feem ntawm VOCs, tab sis cov VOCs purification efficiency tsis tshaj 30%. Wastewater los ntawm cov pej thuam nqus nkag mus rau hauv lub tuam txhab txoj kev pabcuam wastewater.

Rho tawm cov roj carbon dioxide rov qab yog siv rau VOCs, thiab chav siv rau kev pib ntawm kev ua kom cov roj kom rov ua tau cov organic solvents nyob rau hauv cov pa nkev;

Los yog cov activated carbon adsorption concentration - catalytic combustion tswj ntaus ntawv, kev siv cua kub los tsim ua kom muaj zog.

Nyob rau qee rooj plaub ntawm kev lag luam hauv kev lag luam tam sim no, kev lag luam ntawm cov tshuab ua kom cov adsorption ua haujlwm yog cov neeg txom nyem heev thiab kev lag luam tus nqi tsawg heev. Lub ntsiab yog vim li cas qhov uas ua ntej ntawm cov xim muaj hlau yog tsis txhij txhua, ua rau tsis ua hauj lwm ntawm cov adsorber activated.

Tsis tas li ntawd, cov tshuab qis qis los kuj yog qhov yooj yim heev rau kev tswj cov tshuaj tua kab mob ntawm cov khoom siv rooj tog. Nws yog cov cuab yeej yooj yim, kev tswj yooj yim, thiab cov peev hauv kev lag luam thiab cov nqi khiav lag luam. Txawm li cas los xij, vim yog qhov tsim ntawm cov cuab yeej siv no rau txoj kev tawm tsam, nws muaj qee yam kev nyab xeeb. Tam sim no, VOCs kev tiv thaiv cov chaw xws li "qis ntshav siab" thiab lwm yam tshuaj tua hluav taws tau raug tshem tawm hauv qee qhov chaw.

Ntawm qhov tod tes, thaum cov pa roj carbon dioxide yog siab heev, kev sib xyaw ua ke ntawm heterogeneous catalytic oxidation tuaj yeem xav txog kev kho VOCs. Txoj kev siv tshuab ua ke nrog UV UV photolysis, UV photocatalytic oxidation, thiab advanced oxidizer technologies los txhim kho cov haujlwm ntawm cov chaw tsim tshuaj. Thiab hom kev siv tshuab no tuaj yeem ua rau cov tshuaj tiv thaiv nyob rau hauv qhov kub thiab qhov qub, qhov ua haujlwm pheej yig yog pheej yig, qhov chaw cuab yeej me me, kev ruaj ntseg zoo dua.