Kev tshawb fawb txog kev tsim cov khoom siv hluav taws xob khib nyiab khov kho
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Raws li kev tsim kho cov dej khib nyiab hauv kev siv cov khib nyiab khib nyiab, cov kev siv tshuaj khib nyiab feem ntau siv los kho, nrog rau kev kho cov khoom pov tseg ntawm cov khoom pov tseg, xws li kev sib txuas ncaj qha, roj, kev kho kab mob roj ntsha thiab kev siv tshuaj lom neeg lub cev Kev Kho Khaub Ncaws thiab Kev Tiv Thaiv Kev Tiv Thaiv rau Kev Kho Mob Phom Hloov Kev Tua Tsiaj, Kev Tshaj Tawm rau Kev Txhawb thiab Kev Tawm Ntawm Kev Tshawb Fawb Cov Tshuaj Tua Hluav Taws Xeeb, feem ntau tawm tswv yim txog kev siv lub tshuab ua kom muaj oxidation microwave, thiab qhia txog cov khib nyiab cov dej khov Siv dej siv hauv kev tswj, kev siv cov tshuab nanomaterial purification thiab kev siv cov membrane-based absorption purification technology hauv cov dej khov rau cov khib nyiab.
Cov dej khib nyiab cov pa roj carbon dioxide (ntxiv mus hu ua VOCs) yog cov pa roj carbon dioxide uas muaj qhov kub npau npau yog nyob ze dej kub. Ib co boiling ntsiab lus ntawm VOCs yog nyob rau hauv ntau dua kub. Nyob rau lub sijhawm no, cov pa roj carbon dioxide ntawm cov pa roj carbon dioxide no yuav siab tshaj 133.3 Pli. Nyob rau hauv xws li tej yam kev mob, lawv yuav ua rau cov neeg tsis muaj zog tuaj yeem, uas tuaj yeem ua rau huab cua tsis zoo thiab cuam tshuam rau tib neeg kev noj qab haus huv. Cov txheej txheem tseem ceeb ntawm cov kabmob no muaj xws li: polycyclic uas muaj ntxhiab hydrocarbons xws li roj carbon hydrocarbons, hydrocarbons oxygenated, nitrogen hydrocarbons, hydrocarbons halogenated, hydrocarbons, thiab lwm yam. Vim tias lawv cov khoom zoo sib xws, lawv yooj yim tov ua ke thiab muaj huab cua phem. Cov VOCs no tuaj yeem tso kev hem thawj rau tib neeg kev noj qab haus huv, nkag mus rau tib neeg lub cev ua rau neeg ua tsis taus pa, thiab tsim kev puas tsuaj rau tib neeg lub cev. Yog li ntawd, nyob rau lub sijhawm ntawm kev siv tshuab, cov dej khib nyiab loj yuav tsum raug kho kom tswj tau cov khoom pov tseg cov organic ntawm cov khoom siv qoob loo.
1 tsom ntawm kev siv cov khib nyiab khib nyiab cov khoom siv roj
Nyob rau hauv lub sijhawm high-tech, qhov ntau ntawm cov khoom siv high-tech siv cov xim muaj hlau, tshuaj, tshuaj, thiab lwm cov khoom siv tshuaj, thiab ntau cov organic siv rau kev ua. Thaum siv cov organic no, lawv yuav tsim ntau cov khoom siv tsis haum rau cov pa roj carbon dioxide. Lawv tsis tsuas yog ua rau lub cev raug mob rau cov neeg ua haujlwm xwb, tab sis kuj yog tias cov roj cua no tawm mus rau hauv cov huab cua tsis kho, lawv yuav ua rau lub cev tsis zoo thiab ua rau tib neeg raug mob loj. Rau hom VOCs cov khoom yees kho, cov nram qab no muaj. Ob peb.
1.1 Kev kho cov dej khib nyiab ntawm cov khoom pov tseg los ntawm kev siv combustion
Txoj kev combustion yog siv cov Vocs flammability. Txij li thaum lawv tuaj yeem kub hnyiab tau los ntawm lawv tus kheej, yog tias cov organic no raug xa mus rau ib qho kev kub hnyiab ntawm qhov kub, cov organic no tuaj yeem hlawv. Thaum cov organic khoom tsim CO thiab HO, Lawv tuaj yeem raug rho tawm hauv cov pa. Txoj kev kho mob ntawm txoj kev sib tua no yog muab faib ua peb hom: kev sib txuas ncaj qha, kev sib xyaw kom haum thiab kev sib txuas ntawm cov roj av, qhov nruab nrab ntawm cov combustion thiab combustion hom.
1.1.1 Kev kho mob ntawm cov khib nyiab cov organic khib nyiab los ntawm kev sib txuas ncaj qha
Qhov kev sib txuas ncaj nraim yog mus ncaj qha hlawv VOCs los ntawm kev ncaj qha mus noj cov VOCs mus rau hauv lub incinerator, yog li ntawd VOCs tuaj yeem raug kub hnyiab. Yog tias cov concentrated VOCs siab heev, lawv tuaj yeem raug kub hnyiab hauv qhov cub kom tsim tau CO2 thiab H2O. Thaum cov ntsiab lus ntawm VOCs tsawg tsawg, kev sib tua ntawm lub sij hawm no tsis txaus, yog li tej yam kev ntsuas yuav tsum tau ua, xws li ntxiv cov roj av pab cuam. Cov VOCs tau hlawv tag nrho, thiab thaum kawg cov VOCs tau muab ua rau CO2 thiab H2O, thiab cov CO2 thiab H2O tuaj yeem sab lim. Qhov zoo ntawm qhov txujci no yog vim tias lawv tsis tau them tus nqi tsawg, cov khoom yuav tsum tau npaj yog yooj yim, thiab nws yooj yim rau kev khiav hauj lwm. Txawm li cas los xij, txoj kev siv cov tshuaj tua no yuav tsum tswj kom muaj kev kub ntxhov (> 1100 ~ C), thiab tib lub sij hawm, nyob rau hauv xws li qhov kub kub, nws yooj yim rau cov khoom tsim rau NOx compounds uas ua rau lwm yam kab mob nyob rau hauv combustion.
1.1.2 Kev kho mob ntawm cov dej khov ntawm cov khoom pov tseg uas siv hluav taws xob los ntawm catalytic combustion
Catalytic combustion yog ib txoj hauv kev uas siv cov tshuaj tiv thaiv kab mob ntxiv rau cov tshuaj tiv thaiv kab mob kom ua rau VOCs tag nrho los ntawm qhov kev txiav txim siab ntawm cov catalyst rau CO2 thiab H2O, thiab tawm mus rau hauv cov huab cua. Lub tswv yim ntawm kev ua ntawm no catalyst yog qhov tseem ceeb los txo cov tswv yim tiv thaiv ntawm VOCs. Muaj ntau hom catalysts tam sim no siv, thiab cov catalysts no mas noble hlau catalysts (xws li Pt, Pd) thiab cov hlau tsis muaj nqi hlau zoo nkauj (Ti, Fe, Cu, thiab lwm yam.).
Beta thiab lwm yam catalysts, thaum lawv muaj kev sib cuag nrog VOCs, muaj zog selectivity rau chlorinated hydrocarbons, yog li Pt / H-Beta thiab PdO / H-Beta thiab lwm yam catalysts yog nws rau catalytic decomposition. Txawm li cas los xij, cov kev tshawb fawb los ntawm MACenteno_3 thiab lwm tus neeg tau pom tias txoj kev ua kom cov duab xis ua kom muaj peev xwm ua rau Au / TiOxNy catalyzed catalyzed los ntawm cov tshuaj xws li hexane, benzene thiab propanol. Hauv qab no catalysis, cov VOCs tau hlawv tag. . Yog tias txoj kev sib txuas ntawm cov khoom sib piv yog piv nrog cov thermal combustion, lawv txhua tus nyias muaj nyias qhov zoo, tiam sis cov cua sov yuav tsum tau siv rau txoj kev ua kom muaj ntsis zoo dua (200 ° C ~ 400 q C), uas yog qhov kom zoo dua. Txij li thaum lawv muaj peev xwm raug kub hnyiab hauv qis dua, lub sijhawm ntawm cov kab mob secondary secondary contaminants yuav zam tau thiab muaj peev xwm tiv thaiv tau ib puag ncig. Txawm li cas los, cov catalysts tam sim no siv, vim lawv cov tsis ruaj tsis khov, raug yooj yim pov tseg los ntawm cov khoom uas muaj s, P, Ua, thiab lwm yam. Thaum cov kev ua ntawm catalyst puas lawm, cov catalyst yog deactivated, Yog hais tias cov catalyst yog inactivated, Tsuav yog cov tshuaj tiv thaiv ua tiav, cov catalyst xav tau hloov, thiab cov txheej txheem no kuj yuav tsum tau kim kim.
1.1.3 Kev kho mob ntawm cov pa nkev ntawm cov khoom pov tseg los ntawm kev siv roj ntsha
Kev kho cov kab mob VOCs, lom cov pa roj carbon tsawg, yog qhov tseem ceeb ntawm cov khoom tsim, cov kav dej hauv municipal, kev kho av nkos. Yuav kom tswj tau cov roj ntsha roj ntsha, tau npaj txoj kev biofiltration. Nyob rau hauv xyoo tas los no, nrog txoj kev loj hlob ntawm kev tshawb fawb, nws tau raug pom tias qhov kev kho mob no muaj qhov zoo rau kev kho VOCs. Txoj kev lim dej no tuaj yeem ua qis dua VOCs, cov cuab yeej ua haujlwm yog lub luag haujlwm ntawm lub txaj lim dej (raws li qhia hauv daim duab 1), VOCs tuaj yeem ua tiav hauv lub txaj lim dej, kom VOCs tsim CO: thiab HO, uas yog vim muaj qhov tsim ntawm biofilm-fill fillers nyob hauv lub txaj lim, cov fillers no tuaj yeem ua VOCs yuav tsum tau adsorbed los ntawm biofilms hauv txaj lim, decompose VOCs rau CO2 thiab H2O, thiab tso tawm rau saum cua. Nws yog huv.
Qhov kev lim dej lom no pom tau tias qhov ua tau zoo ntawm kev kho mob, feem ntau yog kev tswj hwm ntawm kev ua haujlwm ntawm kev ua haujlwm. Yog li, thaum siv hom no, qhov zoo tau los ntawm kev tswj cov haujlwm khiav hauj lwm. Txoj kev no tuaj yeem ua tiav los ntawm kev tswj cov txiaj ntsig sib txawv ntawm cov organic, uas tuaj yeem ncav cuag li 40% mus rau 98%. Txoj kev lim dej lom neeg muaj kev ua hauj lwm tsawg tsawg, uas yog siv rau daim ntawv thov ntawm lub tuam txhab. Txawm li cas los xij, vim tias cov khoom siv loj ntawm txoj kev no, thiab nws cov selectivity rau kev ua VOCs, kev siv ntawm hom no tsis muaj zog.
1.1.4 Kev kho mob ntawm cov pa nkev ntawm cov pa ntawm adsorption
Cov adsorption txoj kev siv cov adsorbent muaj ib lub qauv sib txuas, thiab txoj kev siv cov adsorbent los nthuav tawm cov adsorbate hauv cov pa ntawm cov adsorbent, thiab cov organic teeb meem yog sib cais los ntawm lub ntsiab lub cev los ntawm adsorption ntawm cov adsorbent, xws li tias yog ua tau los kho cov dej khib nyiab. Thaum cov VOCs dhau los ntawm qhov kev txiav txim siab ntawm tus kiv cua, lawv raug xa mus rau lub pej thuam adsorption 1. Thaum lub sij hawm tawm mus tshaj tawm 1 ncav lub adsorption saturation, lub valve yuav raug kaw, thiab VOCs gas hloov mus rau qhov tshaj tawm siab tshaj tawm 2. Adsorption, vim VOCs yog nyob rau hauv kab 1 thiab kem 2, feem ntau, lawv tau ua haujlwm. Yog li, ntev li ntev tau tus qauv tsim nyog, kev soj ntsuam kev nruam tiav tuaj yeem ua tau tiav, thiab VOCs yuav purified. Tam sim no, feem ntau siv cov adsorbents: vim muaj kev kawm zoo dua ntawm cov activated carbon, qhov no yog vim cov activated carbon muaj thaj tsam loj heev, uas ua rau cov activated carbon muaj peev xwm tshaj tawm adsorption, kom VOCs loj; lwm txoj kev yog zeolite molecular sieve, Lub adsorbent muaj ib lub qauv tsim qauv, uas ua rau ntau qhov kev xaiv. Nws tuaj yeem ua rau lawv muaj kev ua tau zoo. Nyob hauv tus txheej txheem ntawm adsorbing VOCs, lawv txhua tus muaj kev tshem tawm zoo dua, kom lawv muaj peev xwm ua tiav qhov haujlwm ntawm adsorbing VOCs, thiab tib lub sij hawm, vim lawv tsis muaj zog noj thiab paub tab, qhov no yog txoj kev yooj yim txhawb thiab cov tswv yim hauv cov tuam txhab lag luam tsim VOCs rau purification.
Nws yuav tsum tau taw qhia tias tseem muaj kev sib txawv hauv kev ua VOCs hauv Suav teb. Cov kev kho mob saum toj no tsuas yog kho cov VOCs uas siab thiab nruab nrab xwb, tab sis cov hau kev no muaj qaug zog rau VOCs tsawg. Nyob rau hauv xws li ib puag ncig, nws yuav cuam tshuam rau tib neeg lub cev ua pa, ua rau lub qhov ntswg, qhov muag, lub plawv, lub siab, lub ntsws thiab lwm yam kabmob yuav raug mob los ntawm teeb meem roj cua. Nyob hauv cov organic no cov pa hauv tsev ntev ntev yuav ua rau tib neeg lub cev. Cov kev ua xua tshwm sim nyob rau hauv nruab nrog cev, thiab tib neeg siv sij hawm ntev kom nqus tau cov pa nkev; nws muaj peev xwm ua rau lub inhalation thiab carcinogenicity ntawm inhalers, thiab ua rau tsis raug teeb meem rau tib neeg. Yog li, kev tshawb fawb thiab kev hloov ntawm Suav VOCs kev tswj technology, tam sim no, science thiab technology cov neeg ua hauj lwm tau nquag qhia los yog tsim cov txheej txheem tshiab, kom paub meej tias China lub cheeb tsam zoo heev, kom tsis txhob raug mob rau tib neeg kev noj qab haus huv los ntawm VOCs .
2 Kev txhim kho thiab daim ntawv thov kev siv tshuaj tua hluavtaws siv hluav taws xob
2.1 Tshuab Microwave catalytic oxidation thiab nws daim ntawv thov nyob rau hauv kev kho mob ntawm cov khib nyiab cov dej khov kho
Microwave catalytic oxidation technology yog kev siv tshuab ua haujlwm siab ua technology. Nrog rau kev paub txog kev tshawb fawb, kev siv technology no tau tsim los ntawm kev kub ceev. Nws tuaj yeem ua ke nrog cov tsom iav uas siv los tsim kev lag luam los txhim kho kev muaj peev xwm los nrog VOCs. Cov kev hloov ntawm cov kabmob ua kom tsis txhob muaj kabmob ua rau lub tshuaj microwave desorption kho hom raug hloov, thiab cov kev kho mob tau ua kom zoo heev. Nyob hauv tus txheej txheem ntawm kev kho VOCs, siv microwave catalytic oxidation technology, nws ua tsis tau tsuas yog txo lub desorption thiab adsorption lub sij hawm ntawm exhaust roj, tab sis kuj
Cov cuab yeej siv no kuj siv tau los txo cov khoom noj thiab pov tseg ntawm ntau qhov chaw sib zog, txo nqi, thiab txhim kho cov kev tswj ntawm VOCs. Cov adsorbents uas tam sim no siv tau rau tsis tu ncua rau nees nkaum lub sij hawm, thiab cov adsorbents no muaj peev xwm ua tau zoo heev cov nyhuv adsorption thaum siv rov qab, yog li ntawd cov VOCs yog kho kom zoo.
2.2 Cov tshuab ua roj carbon fiber ntau thiab nws daim ntawv thov rau kev kho cov dej khib nyiab loj
Cov tshuab ua roj rau cov tshuab ua haujlwm yog ua ib qho tshiab hauv kev siv technology. Piv nrog rau cov tsoos carbon adsorption cov tsoos tsho, qhov kev siv tshuab no tau zoo dua adsorption kev ua haujlwm ntawm kev ua tau zoo. Lub hauv paus ntawm VOCs txoj kev kho tshuab yog: vim tias nws cov cuab yeej tawm kev tshaj tawm los ntawm kev ntxiv ntawm cov tshuab ua kom cov roj carbon fiber ntau, vim nws cov hauj lwm high-efficiency adsorption, nws yog vim cov tshuab ua kom muaj zog nrog cov khoom noj khoom haus zoo, ntiv taw thiab sab nraud Ntau tus ntawm cov pa carbon atoms raug faib rau saum npoo, thiab vim qhov kev txiav txim ntawm cov kab no cov pa carbon atom, cov carbon atoms zoo li tus qauv tsim muaj lub zog adsorption. Cov qauv ntawm cov pob zeb ua kom lub cev muaj zog no muaj zog zoo dua. Yuav kom piv tau qhov kev ua tau zoo ntawm ob, qhov ntawd yog, qhov kev ua tiav adsorption ntawm cov pa roj carbon ntau thiab cov pa roj carbon monoxide cov khoom siv yog sib piv, thiab nws paub tseeb los ntawm cov kev sim seb cov qauv adsorption ntawm cov activated carbon fiber muaj qhov kom zoo dua, thiaj li hais tias nws yuav ua rau Activated carbon fiber muaj kev ua tau zoo heev, thiab muaj ntau yam zoo xws li ceev ceev adsorption, loj adsorption peev, yooj yim regeneration, loj deg cheeb tsam, ntau micropores thiab cov ntsiab lus siab. Cov kev zoo heev ntawm no tuaj yeem ua rau lawv nyob hauv tus txheej txheem ntawm kev kho VOCs. Siab exerting cov nyhuv ntawm adsorbing VOCs yuav qhia tau hais tias activated carbon fiber ntau muaj cov nyhuv zoo. Vim li no, cov tshuab ua kom siv roj carbon fiber ntau tau zoo heev. Nws yog ib qho zoo heev rau kev sib tw txhawb thiab kev siv rau hauv kev tswj ntawm VOCs, ua ib puag ncig ntau dua tshiab.
2.3 Txhim Kho Kom Tshuaj Tivthaiv thiab Daim Ntawv Tso Npe ntawm Cov Khoom Siv Tshuaj Quav Tshuaj Tua Hluav Taws Xob
Kev siv tshuab Bioremediation yog ib txoj kev tshiab nyob rau hauv kev tswj cov VOCs. Lub ntsiab lus tseem ceeb yog hais tias los ntawm kev tsim cov tshuab thaij (bioremediation technology), cov kev siv degradation microbial yuav siv tau los kho cov VOCs organic matter thiab hloov mus rau hauv cov tshuaj Inorganic xws li dej thiab carbon dioxide, yog li cov organic nkev roj nkim rau qhov chaw pov tseg ntawm. Txawm li cas los xij, vim tias kev siv cuab yeej cuab tam siv tau yooj yim dua hauv VOCs txoj kev tswj hwm, nws tsis yooj yim los xyuas kom meej tias nws tsis muaj nyob hauv cov pa roj theem hauv tshuab raj tshuab.
Cov khoom muaj kev puas tsuaj, uas yuav cuam tshuam cov kev ntsuam xyuas ntawm kev siv tshuaj tua kab mob biological, thiaj li siv cov tswv yim, yuav tsum tau them nyiaj kom zoo rau kev ua kom muaj dej cawv ploj. Tom qab siv liquids ntawm cov VOCs roj, nws yog ib qho tsim nyog kom dhau txoj kev siv roj ntsha, metabolism thiab degradation ntawm ntau yam kab mob. txheej txheem. Txawm li cas los xij, hom kev ua no tau tsis tau tsim ib txoj kev xav zoo kawg nkaus, thiab tsis tsim nyog tau pom nyob hauv cov ntawv siv. Yog li, thiaj li yuav siv biotechnology mus ua VOCs, ntau cov neeg ua hauj lwm thiab cov neeg ua hauj lwm yuav tsum ua mus ntxiv rau lawv cov kev ua ub no ntxiv rau kev tshawb fawb ntxiv.
2.4 Nanomaterial purification technology thiab nws daim ntawv thov nyob rau hauv kev kho mob ntawm volatile organic pov tseg cov roj
Nanomaterial purification technology yog ib qho tshiab rau kev ua VOCs nyob rau hauv xyoo tas los no. Nanomaterials xa cov ntaub ntawv ultra-nplua. Lub nano-particles ntawm no cov ntaub ntawv ultra-nplua nuj muaj peev xwm heev adsorption vim lawv qhov chaw loj deg. Yog li, nano-cov ntaub ntawv yuav muaj zoo catalysis zoo heev thaum cov tshuaj tiv thaiv. Cov nanoparticles Nyob hauv tus txheej txheem ntawm cov VOCs, cov tshuaj tiv thaiv kab mob VOCs yuav ua kom zoo dua vim yog ntxiv cov nanoparticles, uas muaj txiaj ntsim zoo rau kev kho cov dej khov ntawm cov pa nkev, thiab txawm tsis tuaj yeem ua haujlwm. Cov tshuaj muaj peev xwm ua kom tiav. Obviously, nano-TiO muaj feem xyuam rau kev kho cov gaseous organic kuab paug. Cov kev zoo no yog vim lawv muaj peev xwm mus qhib nanomaterials nyob rau hauv cov teeb meem uas muaj teeb meem, uas tuaj yeem ua nano-TiO: hloov cov organic teeb meem rau hauv cov khoom me me xws li cov organic acids, dej, carbon dioxide, thiab lwm yam, li pov tseg cov kab mob muaj kab mob, Nano-TiO Lub tshuab luam ntawv muaj ib qho zoo heev hauv kev kho VOCs. Nws muaj qhov zoo hauv qhov degradation ntawm VOCs thiab muaj peev xwm los lim cov cua. Yog li no, nws tuaj yeem ua nano-TiO: Daim ntawv nthuav dav heev. Kev soj ntsuam zoo thiab kev sib piv, kev ntsuam xyuas thiab kev sib piv ntawm cov lus hais saum toj-hais ntau tus VOCs kev kho tus txheej txheem yog muab nyob rau hauv Table 1, thiab kev sib piv tuaj yeem hais meej.
3 Xaus
Tuam Tshoj tau tso nyiaj ntau zog ntawm txoj kev tshawb fawb ntawm cov khoom siv degradable organic nkev kev kho tshuab. Tam sim no, muaj ntau hom kev loj hlob thiab daim ntawv thov. Lawv yog microwave catalytic oxidation technology, tshuab ua kom lub cev muaj fiber ntau, kev kho cov khoom siv roj ntsha, cov khoom siv nano khoom siv, thiab lub cev raws li cov membrane. Purification technology, thiab lwm yam. Cov technologies tau siv los siv rau hauv kev xyaum, thiab ua tiav cov txiaj ntsig zoo, tshwj xeeb tshaj yog nyob rau hauv tus txheej txheem ntawm kev ua VOCs, tuaj yeem kov yeej cov teeb meem ntawm cov VOCs tswj kev siv technology. Yuav kom tswj tau VOCs zoo dua, hauv cov ntawv thov siv yav tom ntej, siv cov cai tswjfwm ntau yam siv los ua kom lawv siv ntau tus yam ntxwv kom lawv ua tau zoo dua VOCs. Yog li, qhov tseeb ua hauj lwm yav tom ntej, raws li qhov tseeb ntawm VOCs, Xaiv qhov kev tswj cov cuab yeej tsim nyog, thiaj li yuav daws tau cov VOCs, tuaj yeem ua kom cov VOCs zoo nyob rau hauv qhov chaw thiab kom muaj kev lag luam zoo qhov chaw nyob.