Cov ntsiab lus ntawm VOC Waste Gas Treatment System Solution
Nrog rau kev loj hlob sai ntawm kev lag luam, ntau cov organic volatile compounds VOCs, nyob rau hauv xyoo tas los no, volatile organic tebchaw (VOCs) tau dhau los ua ib qho ntawm cov pa phem hauv huab cua, uas tau ua rau muaj kev hem thawj rau tib neeg kev noj qab haus huv thiab kev sib npaug ntawm cov ecosystem, qhov kawg ntawm kev tswj hwm ntawm VOCs tau txais kev pom zoo los ntawm cov zej zog.
Raws li lub hauv paus ntawm cov cuab yeej siv hluav taws xob uas twb muaj lawm, lub hauv paus ntsiab lus, cov txheej txheem ntws, kev tshawb fawb thiab kev loj hlob zeem muag ntawm kev sib xyaw adsorption concentration-catalytic combustion tshuab tsim rau cov huab cua pov tseg loj thiab tsis tshua muaj siab ntawm VOCs tau tham hauv kev nthuav dav.
VOCs Gas feem ntau ua rau muaj kev puas tsuaj rau huab cua:
(1) Qee cov tshuaj lom thiab carcinogenic thiab ua rau tib neeg noj qab haus huv;
(2) Hydrocarbons thiab nitrogen oxides nyob rau hauv VOCs teb los tsim ozone nyob rau hauv qhov kev txiav txim ntawm ultraviolet lub teeb, uas yuav ua rau atmospheric photochemical smog txheej xwm thiab ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv thiab kev loj hlob ntawm cov nroj tsuag;
(3) Koom nrog tsim cov aerosols theem nrab hauv cov huab cua. Feem ntau ntawm cov aerosols theem nrab yog cov khoom zoo, uas tsis yooj yim rau kev sib haum xeeb. Lawv tuaj yeem nyob hauv cov huab cua ntev dua thiab muaj zog tawg tawg rau lub teeb, uas tuaj yeem txo qhov pom ntawm atmospheric;
Tam sim no, ntau lub nroog atmospheric ib puag ncig tau pom cov pa phem hauv cheeb tsam, ozone thiab kua qaub nag thiab lwm yam peb yam ua rau muaj kuab paug huab cua, thiab VOCs yog ib qho tseem ceeb tshaj plaws cov tshuaj txhawb zog.
VOCs Gas Common Treatment Technology:
VOCs kev tswj hwm tau ceev, tam sim no VOCs roj kho tshuab feem ntau muab faib ua ob pawg:
(1) Kev tswj hwm ntawm qhov chaw, tshwj xeeb yog hais txog kev ntsuas los tiv thaiv lossis txo VOCs raws li emissions nyob rau hauv kev sib txuas ntau lawm, uas yog txoj hauv kev zoo tshaj plaws los tswj cov pa phem organic. Txawm li cas los xij, vim qhov kev txwv ntawm qib kev kawm, nws yuav ua rau muaj kev cuam tshuam thiab xau ntau qhov sib txawv ntawm cov pa roj carbon monoxide rau ib puag ncig, uas nyuaj rau kev ua tiav.
(2) Txoj kev tswj hwm ntawm kev tswj hwm thiab tshem tawm VOCs roj thaum kawg ntawm kev tsim khoom tuaj yeem muab faib ua ob pawg: kev siv thev naus laus zis thiab kev siv tshuab puas tsuaj.
Kev siv thev naus laus zis: yog kev siv lub cev txoj hauv kev kom rov qab tau VOCs cov pa roj uas tsis yog kev puas tsuaj, feem ntau yog siv cov pa roj carbon adsorption, txoj kev condensation, txoj kev kho membrane thiab lwm yam. Cov txheej txheem no tuaj yeem tsis tsuas yog tswj tau cov emissions ntawm VOCs, tab sis kuj tseem tuaj yeem siv rov ua dua tshiab tuaj yeem txuag tau cov peev txheej thiab nqa cov txiaj ntsig kev lag luam, yog li nws tau txais kev saib xyuas ntau dua.
Kev puas tsuaj thev naus laus zis: uas yog, los ntawm cov txheej txheem tshuaj lom neeg lossis cov tshuaj lom neeg ua rau VOCs pov tseg cov roj oxidation decomposition rau hauv cov khoom tsis muaj tshuaj lom lossis tsis muaj tshuaj lom ntawm kev puas tsuaj, cov thev naus laus zis tseem ceeb yog combustion, photocatalytic degradation, plasma technology, biodegradation thiab lwm yam.
VOCs pov tseg roj siv thev naus laus zis yog cov txheej txheem kho ib leeg, raws li cov xwm txheej tshwj xeeb thiab cov kev xav tau ntawm VOCs pov tseg roj emissions, xaiv cov txheej txheem tsim nyog; Vim muaj ntau yam ntawm VOCs, complex Cheebtsam, cov khoom sib txawv, nyob rau hauv ntau qhov xwm txheej, kev siv cov tshuab lim dej feem ntau nyuaj ua kom tau raws li txoj cai tswjfwm, thiab kev lag luam tsis zoo. Siv qhov zoo ntawm cov cuab yeej kho mob sib txawv, cov txheej txheem kev kho mob ua ke tuaj yeem ua tsis tau tsuas yog ua tau raws li cov kev cai emission, tab sis kuj txo cov nqi khiav hauj lwm ntawm cov khoom siv.
Cov txheej txheem thev naus laus zis ntawm Zeolite Rotor Concentration + Catalytic Combustion Systems:
Thawj thev naus laus zis siv los cuam tshuam nrog VOCs roj yog txoj kev adsorption, ntawm cov uas feem ntau siv thiab ntau dua yog cov pa roj carbon adsorption, qhib cov pa roj carbon adsorption txoj kev rau adsorption thiab kho cov pa taws halogen thiab benzene series ntawm cov cuab yeej siv tau ntau heev hauv kev lag luam. Lub hauv paus ntsiab lus tseem ceeb ntawm txoj kev adsorption yog siv cov khoom ntxeem tau nrog thaj chaw loj tshwj xeeb raws li adsorbent. Thaum VOCs roj ntws los ntawm cov adsorbent, vim qhov loj ntawm qhov chaw ntawm cov adsorbent, VOCs molecules raug daig rau ntawm sab hauv ntawm lub micropore los ntawm cov adsorbent, thiaj li ua tiav cov txiaj ntsig ntawm cov pa purification. Raws li kev sib xyaw ua ke tshiab thiab ua tau zoo VOCs adsorption kho tshuab, zeolite log Rotor Concentrator + catalytic combustion tshuab tau siv dav hauv txawv teb chaws.
(1) Hom adsorbent
Cov khoom siv adsorption yog lub hauv paus ntawm lub log tshuab, feem ntau siv cov pa roj carbon activated thiab zeolite molecular sieve ob. Cov pa roj carbon activated muaj cov nplua nuj micropores, thaj chaw loj tshwj xeeb, muaj peev xwm adsorption muaj zog, ceev ceev, yog siv dav hauv lub log tshuab. Activated carbon li adsorbent los kho cov roj khib nyiab, nws lub peev xwm adsorption yog loj, tsis tshua muaj nqi, tab sis nws cov pore yog ib qho yooj yim mus ntsaws, thiab activated carbon nws tus kheej muaj ib tug tej yam flammability, yooj yim mus ntes hluav taws thaum desorption, yuav ua tau ib tug tej yam kev nyab xeeb kev nyab xeeb, tsis ua raws li qhov yuav tsum tau ntawm kev ruaj ntseg ntau lawm, yuav muaj kev cuam tshuam nyob rau hauv lub tswv yim daim ntawv thov.
Zeolite molecular sieve yog ib yam khoom siv hydrate nrog cov pob txha tshwj xeeb ntawm crystalline aluminium silicate hlau ntsev. General chemical formula yog raws li nram no:
[ (A102) x - (SiO2)y] - zH20o
Qhov twg M sawv cev rau cation, m sawv cev rau tus naj npawb ntawm valence xeev, z sawv cev rau tus naj npawb ntawm hydration, x thiab kaum txhiab yog integers, tom qab lub tshuab ua haujlwm, A. Cov dej hauv lub taub hau yuav ploj mus, thiab cov khoom seem yuav txav mus rau hauv cov qauv tawb nrog aperture ntawm 3 ~ 10Å.
Qhov kev xaiv adsorption muaj peev xwm ntawm zeolite molecular sieve feem ntau yog vim cov qauv tsis tu ncua. Zeolite molecular sieve aperture txoj cai, kev faib tawm tsis sib xws, kev xaiv ntawm adsorption yog vim qhov sib txawv zeolite aperture loj sib txawv, nyob rau hauv ib txwm muaj, tsuas yog molecular dynamic txoj kab uas hla tsawg dua molecular sieve aperture molecules yuav adsorbed los ntawm molecular sieve.
Kuj tseem muaj qhov sib txawv loj ntawm cov pob txha pob txha thiab qhov pore loj ntawm ntau hom molecular sieves, thiab cov pob txha pob txha ntawm molecular sieves muaj qhov sib txawv hauv qhov ntau ntawm cov degrees, yog li qee cov molecules nrog molecular dynamic txoj kab uas hla me ntsis ntau dua li qhov pore loj kuj tuaj yeem adsorbed los ntawm nws, tab sis tus nqi adsorption thiab adsorption muaj peev xwm txo qis.
Vim tias muaj cov cations hauv cov qauv thiab cov pob txha pob txha raug them tsis zoo, nws yog molecular sieve nws tus kheej nrog polarity. Lub cation ntawm zeolite molecular sieve yuav tsim ib tug muaj zog zoo hluav taws xob teb, nyob rau hauv thiaj li yuav nyiam qhov chaw tsis zoo ntawm lub ncov qaumteb qabteb molecules, los yog polarizable molecules los ntawm zeolite molecular sieve electrostatic induction tom qab polarization.
Yog li ntawd, zeolite molecular sieves tau adsorb molecules nrog muaj zog polarity los yog polarization yooj yim tab sis kinetic txoj kab uas hla me ntsis loj dua lawv pore loj. Vim hais tias cov molecular sieve muaj ib tug tshwj xeeb pore qauv kom nws muaj kev ua tau zoo tshwj xeeb, nyob rau hauv cov kev mob ntawm kub thiab tsis tshua muaj siab kuj ua si nws lub peev xwm adsorption. Tam sim no, hom molecular sieve feem ntau siv rau adsorption yog 13X, NaY, mercerite thiab ZSM-5.
Taw qhia ntawm zeolite log txoj cai
Txoj kev tshawb no xaus lus tias: yog tias cov txheej txheem corrugated thiab tiaj tus ceramic fiber ntau siv txoj kev sib koom ua ke los ua lub log honeycomb, thiab tom qab ntawd cov zeolite nrog dej nqus ntawm lub log ntawm lub log, lub log yuav dhau los ua lub log nqus, tom qab kev sim ua pov thawj tias lub log adsorption rau VOCs purification kev kho mob zoo heev.
Cov cheeb tsam concentration ntawm zeolite khiav tuaj yeem muab faib ua peb ntu: thaj chaw kho mob, thaj chaw rov tsim dua tshiab thiab thaj chaw txias. Lub concentration runner khiav tsis tu ncua nyob rau hauv txhua cheeb tsam. VOCs organic pov tseg roj yog lim los ntawm lub lim ua ntej, thiab tom qab ntawd los ntawm qhov chaw kho mob ntawm cov khoom siv sib xyaw ua ke.
VOCs nyob rau hauv qhov chaw kho mob raug tshem tawm los ntawm adsorption ntawm adsorbent, thiab cov huab cua huv huv tau tawm ntawm qhov chaw kho mob ntawm cov neeg khiav dej num. Cov organic pov tseg roj VOCs adsorbed nyob rau hauv lub concentration khiav yog desorbed thiab concentrated rau 5 ~ 15 zaug los ntawm kev kho cua kub nyob rau hauv lub regeneration cheeb tsam.
Cov neeg khiav dej num muaj zog yog txias rau hauv qhov chaw txias, thiab cov huab cua los ntawm qhov chaw txias txias yog cua sov thiab siv los ua cov cua rov ua dua kom ua tiav cov nyhuv purification thiab txuag hluav taws xob.
Catalytic oxidation txheej txheem:
Cov txheej txheem catalytic combustion yog ua nyob rau hauv ib chav tsev catalytic combustion. Cov roj khib nyiab organic yog preheated rau 200-400 ° C los ntawm lub tshav kub exchanger, thiab ces nkag mus rau hauv lub combustion chamber. Thaum dhau los ntawm lub txaj catalyst, cov molecules ntawm hydrocarbons thiab cov pa oxygen molecules nyob rau hauv cov roj sib tov yog adsorbed rau ntawm qhov chaw ntawm catalyst thiab ua kom nquag plias. Vim hais tias deg adsorption txo qhov ua kom lub zog ntawm cov tshuaj tiv thaiv, hydrocarbons yog oxidized sai nrog oxygen molecules ntawm qis kub los tsim carbon dioxide thiab dej.
Zeolite Rotor adsorption concentration - catalytic combustion txheej txheem:
Lub tswv yim tseem ceeb ntawm zeolite log concentration catalytic combustion tshuab, VOCs nyob rau hauv cov khoom siv khib nyiab nrog tsawg concentration thiab huab cua loj yog sib cais thiab concentrated los ntawm adsorption sib cais txoj kev, thiab cov pa phem nrog siab concentration thiab me me cua ntim tom qab concentration yog decomposed thiab purified los ntawm combustion txoj kev, feem ntau hu ua adsorption cais concentration combustion txheej txheem + purification decomposition.
Lub adsorption khiav nrog honeycomb qauv yog ntsia rau hauv lub plhaub muab faib ua adsorption, regeneration thiab txias aav, thiab rotates maj mam ntawm ib tug ceev ntawm 3 ~ 8 revolutions ib teev nyob rau hauv lub tsav ntawm lub ceev regulating lub cev muaj zog.
Peb cheeb tsam ntawm adsorption, regeneration thiab txias yog feem ntau txuas nrog rau cov huab cua kev kho cua, cua txias thiab regeneration cua. Tsis tas li ntawd, txhawm rau tiv thaiv kom tsis txhob muaj cua nkag ntawm cov cua nkag thiab qhov ncig ntawm lub adsorption khiav thiab lub plhaub ntawm txhua cheeb tsam, cov phaj faib thiab cov adsorption khiav, lub voj voog ntawm cov adsorption khiav thiab lub plhaub yog nruab nrog kub resistant, hnyav fluoro roj hmab sealing khoom.
No. 1 ntxuam tsav VOCs uas muaj cov pa pa tawm mus rau thaj tsam ib qho ntawm cov neeg khiav dej num, uas yog thaj chaw adsorption. Cov ntaub ntawv sib txawv adsorption tuaj yeem sau rau hauv tus khiav raws li lub hom phiaj sib txawv. Ib cheeb tsam ntawm VOCs adsorbed tuaj rau thaj tsam b rau desorption nrog kev sib hloov ntawm tus khiav. Cov cua kub kub ntws los ntawm kev hloov hluav taws xob 1 yuav desorb VOCs adsorbed ntawm tus khiav, thiab ncav cuag qhov kub thiab txias los ntawm kev hloov hluav taws xob 2, thiab tom qab ntawd nkag mus rau hauv lub catalytic combustion chamber rau catalytic oxidation cov tshuaj tiv thaiv. Txij li thaum tus khiav yuav tsum tau adsorbed tom qab desorption, qhov chaw txias c yog teem rau ntawm qhov chaw desorption kom txias los ntawm huab cua, thiab cov cua txias txias ua cua kub rau desorption los ntawm tshav kub hloov 1.
Rau tam sim no chip manufacturing, LCD vaj huam sib luag kev lag luam, semiconductor kev lag luam, luam ntawv kev lag luam, txheej kev lag luam thiab lwm yam kev lag luam ntau lawm teb. Nws txoj kev tsim khoom ruaj khov yuav tsum siv ntau cov kuab tshuaj organic, siv los ua tus neeg saib xyuas, photoresist, stripping kua, diluent, thiab lwm yam, nyob rau hauv cov txheej txheem no yuav tsim ib tug loj tus naj npawb ntawm cov organic pov tseg gas, cov organic khib nyiab roj yog loj huab cua ntim, tsis tshua muaj concentration ntawm cov pa khib nyiab, yog li ntawd thiaj li yuav zoo kho hom khib nyiab roj uas muaj VOCs Cheebtsam, Zeolite rotor concentration yog tam sim no txoj kev kho zoo tshaj plaws.
Daim Ntawv Thov Ntau Yam ntawm Zeolite Rotary Concentration + Catalytic Combustion Systems:
Zeolite rotary concentration thiab catalytic combustion tshuab muaj ntau yam kev siv, npog ntau yam kev lag luam thiab kev kho cov pa roj. Cov thev naus laus zis tshiab no feem ntau yog siv rau hauv cov khoom siv khib nyiab pov tseg uas tsis tshua muaj siab thiab cov huab cua loj, thiab haum rau ntau yam kev lag luam.
Ib qho txiaj ntsig tseem ceeb ntawm zeolite rotor concentrator yog nws lub peev xwm los kho cov roj khib nyiab uas tsis muaj halogens xws li S, N, Cl, F, thiab lwm yam. Yog tias cov khoom no muaj nyob, lawv tuaj yeem kho tau hauv cov txheej txheem pretreatment ua ntej combustion los xyuas kom meej tias tsis muaj cov pa hluav taws xob tshiab tsim tom qab cov txheej txheem combustion.
Tsis tas li ntawd, qhov kub ntawm qhov tso pa tawm tsis tuaj yeem siab dhau thiaj li yuav kho tau zoo siv qhov system no. Yog hais tias qhov kub ntawm qhov kub siab tshaj 300 ° C thiab raug cua kub, cov organic khib nyiab adsorbed ntawm zeolite molecular sieve yuav tsis desorbed rau lub sij hawm ntev, cuam tshuam rau kev ua tau zoo ntawm cov txheej txheem kho.
Lub tshuab thev naus laus zis no tsim nyog rau ntau yam kev lag luam, suav nrog cov nroj tsuag tshuaj, cov chaw pleev xim, cov tuam txhab tshuaj, cov khoom siv hluav taws xob, cov tuam txhab rooj tog, cov tuam txhab ntim khoom thiab luam ntawv, thiab cov chaw pleev xim. Nws zoo kho cov kuab tshuaj organic thiab cov pa roj carbon monoxide emissions los ntawm cov kev lag luam sib txawv, ua rau nws muaj ntau yam thiab muaj txiaj ntsig zoo rau cov tuam txhab nrhiav kev txhim kho lawv cov txheej txheem kho cov roj pov tseg.
Qhov tseem ceeb, cov pa khib nyiab tuaj yeem adsorbed thiab tom qab ntawd desorbed los ntawm zeolites, ua rau lawv tsim nyog rau kev kho mob. Txawm li cas los xij, yog tias cov pa hluav taws xob muaj S, N, Cl, F thiab lwm yam khoom siv, cov pa phem thib ob yuav raug tsim tom qab kev sib tsoo, thiab nws tsis haum rau kev kho catalytic combustion.
Hauv cov ntsiab lus, zeolite rotary concentration thiab catalytic combustion systems muaj ntau yam kev siv thiab muab cov kev daws teeb meem txhim khu kev qha thiab muaj txiaj ntsig zoo rau VOCs khib nyiab roj kho hauv ntau yam lag luam. Nws lub peev xwm los tswj cov huab cua siab thiab cov concentrations tsawg ua rau nws muaj txiaj ntsig zoo thaum nrhiav kev txhim kho cov txheej txheem ua pa.