Cov kuab paug tawm yog feem ntau: xim pos huab thiab cov kuab tshuaj organic uas ua los ntawm cov tshuaj tsuag xim, thiab cov kuab tshuaj organic ua thaum ziab volatilization. Xim pos huab tsuas yog los ntawm ib feem ntawm cov kuab tshuaj nyob rau hauv cov huab cua txau, thiab nws muaj pes tsawg leeg yog raws li cov txheej txheem siv. Cov kuab tshuaj organic feem ntau yog los ntawm cov kuab tshuaj thiab cov tshuaj diluents hauv kev siv cov txheej txheem txheej txheej, feem ntau yog cov emissions volatile, thiab lawv cov pa phem tseem ceeb yog xylene, benzene, toluene thiab lwm yam. Yog li ntawd, lub hauv paus ntsiab lus ntawm cov pa phem pov tseg tawm hauv cov txheej yog cov tshuaj tsuag pleev xim chav, chav ziab khaub ncaws thiab chav ziab khaub ncaws.
1. Txoj kev kho cov roj khib nyiab ntawm tsheb ntau lawm kab
1.1 Kev kho cov txheej txheem ntawm cov organic pov tseg hauv cov txheej txheem ziab
Cov roj tso tawm los ntawm electrophoresis, txheej txheej nruab nrab thiab txheej txheej ziab khaub ncaws yog nyob rau hauv qhov kub thiab txias thiab siab concentration pov tseg roj, uas yog tsim rau incineration txoj kev. Tam sim no, feem ntau siv cov khib nyiab kho kev ntsuas hauv cov txheej txheem ziab muaj xws li: kev siv hluav taws xob thermal oxidation (RTO), kev siv hluav taws xob catalytic combustion (RCO), thiab TNV rov qab thermal incineration system.
1.1.1 Thermal storage type thermal oxidation technology (RTO)
Thermal oxidator (Regenerative Thermal Oxidizer, RTO) yog lub zog txuag hluav taws xob tiv thaiv ib puag ncig rau kev kho nruab nrab thiab tsis tshua muaj siab tsis muaj zog organic pov tseg roj. Haum rau cov ntim siab, tsis tshua muaj siab, haum rau cov organic pov tseg roj concentration ntawm 100 PPM-20000 PPM. Tus nqi khiav lag luam yog tsawg, thaum cov organic pov tseg cov roj concentration siab dua 450 PPM, RTO ntaus ntawv tsis tas yuav ntxiv cov khoom siv roj; purification tus nqi yog siab, tus nqi purification ntawm ob lub txaj RTO tuaj yeem ncav cuag ntau dua 98%, qhov kev ua kom huv ntawm peb lub txaj RTO tuaj yeem ncav cuag ntau dua 99%, thiab tsis muaj cov pa phem thib ob xws li NOX; tswj tsis siv neeg, kev ua haujlwm yooj yim; kev nyab xeeb yog siab.
Cov khoom siv hluav taws xob hluav taws xob rov ua dua tshiab tau txais cov txheej txheem thermal oxidation los kho qhov nruab nrab thiab qis qis ntawm cov pa roj carbon monoxide, thiab cov khoom siv hluav taws xob kub cia lub txaj hluav taws xob yog siv los kho cov cua sov. Nws yog tsim los ntawm ceramic tshav kub cia txaj, tsis siv neeg tswj valve, combustion chamber thiab tswj qhov system. Cov yam ntxwv tseem ceeb yog: qhov tsis siv neeg tswj valve nyob rau hauv qab ntawm lub txaj cia cua sov yog txuas nrog cov yeeb nkab loj thiab cov yeeb nkab loj, thiab lub txaj cia cua sov yog khaws cia los ntawm preheating cov organic khib nyiab los rau hauv lub txaj txaj. nrog cov khoom siv hluav taws xob ceramic kom nqus thiab tso tawm cua sov; cov organic khib nyiab preheated rau ib qho kub (760 ℃) yog oxidized nyob rau hauv lub combustion chamber los tsim carbon dioxide thiab dej, thiab yog purified. Qhov ob-txaj RTO lub ntsiab qauv muaj xws li ib chav combustion chamber, ob lub txaj ntim ceramic thiab plaub lub qhov hloov pauv. Lub regenerative ceramic packing txaj kub exchanger nyob rau hauv lub cuab yeej tuaj yeem ua kom cov cua sov rov qab ntau dua 95%; Tsis siv los yog roj me me thaum kho cov pa roj carbon monoxide.
Qhov zoo: Hauv kev cuam tshuam nrog cov dej ntws siab thiab tsis tshua muaj siab ntawm cov organic pov tseg, tus nqi khiav haujlwm tsawg heev.
Disadvantages: siab ib zaug peev, siab combustion kub, tsis haum rau kev kho mob ntawm siab concentration ntawm organic pov tseg gas, muaj ntau yam ntawm tsiv qhov chaw, xav tau kev pab ntau dua.
1.1.2 Thermal catalytic combustion technology (RCO)
Lub regenerative catalytic combustion ntaus ntawv (Regenerative Catalytic Oxidizer RCO) yog siv ncaj qha mus rau nruab nrab thiab siab concentration (1000 mg / m3-10000 mg / m3) organic pov tseg roj purification. RCO cov cuab yeej kho mob tshwj xeeb yog tsim nyog rau qhov kev thov siab rau cov cua sov rov qab, tab sis kuj tsim nyog rau tib txoj kab ntau lawm, vim tias cov khoom sib txawv, cov khoom siv khib nyiab feem ntau hloov pauv lossis cov pa khib nyiab ntau qhov sib txawv heev. Nws yog qhov tshwj xeeb tshaj yog tsim nyog rau kev xav tau kev siv hluav taws xob rov qab los ntawm kev lag luam lossis ziab cov kab hluav taws xob kho hluav taws xob, thiab lub zog rov qab tuaj yeem siv rau cov kab ziab khaub ncaws kom qhuav, thiaj li ua tiav lub hom phiaj ntawm kev txuag hluav taws xob.
Lub tshuab hluav taws xob regenerative catalytic combustion kho tshuab yog cov tshuaj tiv thaiv roj-khoom, uas yog qhov sib sib zog nqus oxidation ntawm reactive oxygen hom. Nyob rau hauv cov txheej txheem ntawm catalytic oxidation, lub adsorption ntawm qhov chaw ntawm lub catalyst ua rau cov reactant molecules enriched nyob rau saum npoo ntawm catalyst. Cov nyhuv ntawm cov catalyst hauv kev txo lub zog ua kom nrawm cov tshuaj tiv thaiv oxidation thiab txhim kho tus nqi ntawm cov tshuaj tiv thaiv oxidation. Nyob rau hauv qhov kev txiav txim ntawm cov catalyst tshwj xeeb, cov organic teeb meem tshwm sim yam tsis muaj oxidation combustion ntawm qis pib kub (250 ~ 300 ℃), uas yog decomposed rau hauv carbon dioxide thiab dej, thiab tso tawm ib tug loj npaum li cas ntawm tshav kub zog.
Lub RCO ntaus ntawv yog tsim los ntawm lub cub tawg lub cev, lub catalytic tshav kub cia lub cev, combustion system, tsis siv neeg tswj system, tsis siv neeg valve thiab ob peb lwm systems. Nyob rau hauv cov txheej txheem kev tsim khoom, cov pa tawm ntawm cov organic tso tawm nkag mus rau hauv lub rotating valve ntawm cov khoom siv los ntawm induced cua ntsawj ntshab, thiab cov roj inlet thiab lub qhov hluav taws xob roj yog tag nrho sib cais los ntawm lub rotating valve. Lub zog txuag hluav taws xob thiab kev sib pauv cua sov ntawm cov roj yuav luag ncav cuag qhov kub thiab txias los ntawm catalytic oxidation ntawm cov txheej txheem catalytic; cov pa tso pa txuas ntxiv ua kom sov los ntawm thaj chaw cua sov (txawm los ntawm hluav taws xob cua sov lossis cua sov cua sov) thiab tswj xyuas qhov kub thiab txias; Nws nkag mus rau hauv cov txheej txheem catalytic kom ua tiav cov tshuaj tiv thaiv oxidation catalytic, uas yog, cov tshuaj tiv thaiv tsim cov pa roj carbon dioxide thiab dej, thiab tso tawm ntau lub zog kub kom ua tiav cov txiaj ntsig kev kho mob. Cov roj catalyzed los ntawm oxidation nkag mus rau hauv cov khoom siv ceramic txheej 2, thiab lub zog hluav taws xob tau tawm mus rau hauv cov huab cua los ntawm kev sib hloov valve. Tom qab purification, lub tso cua kub tom qab purification tsuas yog me ntsis siab dua qhov kub thiab txias ua ntej cov khib nyiab kho. Lub kaw lus ua haujlwm tsis tu ncua thiab hloov pauv tau. Los ntawm kev sib hloov valve ua haujlwm, tag nrho cov txheej txheem ceramic ua tiav cov kauj ruam ntawm cov cua sov, cua txias thiab lim dej, thiab cov cua sov tuaj yeem rov qab tau.
Qhov zoo: cov txheej txheem yooj yim ntws, cov khoom siv compact, txhim khu kev qha; high purification efficiency, feem ntau tshaj 98%; tsawg combustion kub; Kev nqis peev uas tsis muaj pov tseg, cov nqi khiav lag luam qis, kev ua kom sov rov qab tuaj yeem ncav cuag ntau dua 85%; tag nrho cov txheej txheem tsis muaj dej pov tseg, txheej txheem purification tsis tsim NOX cov pa phem thib ob; RCO purification khoom siv tau nrog chav ziab, cov roj purified tuaj yeem siv ncaj qha rau hauv chav ziab khaub ncaws, kom ua tiav lub hom phiaj ntawm kev txuag hluav taws xob thiab txo cov pa tawm;
Disadvantages: lub catalytic combustion ntaus ntawv tsuas yog haum rau kev kho mob ntawm cov organic pov tseg roj uas tsis muaj boiling point organic Cheebtsam thiab cov hmoov tshauv tsawg, thiab cov khib nyiab kho cov khoom nplaum xws li oily pa luam yeeb yog tsis tsim nyog, thiab cov catalyst yuav tsum raug lom; qhov concentration ntawm cov organic pov tseg yog qis dua 20%.
1.1.3TNV Recycling type thermal incineration system
Recycling hom thermal incineration system (Lub teb chaws Yelemees Thermische Nachverbrennung TNV) yog siv cov pa roj los yog roj ncaj qha combustion cua sov khib nyiab roj uas muaj cov kuab tshuaj organic, nyob rau hauv qhov kev ua ntawm kub kub, organic hnyav molecules oxidation decomposition rau carbon dioxide thiab dej, kub flue gas. los ntawm kev txhawb nqa multistage tshav kub hloov khoom cua kub txheej txheem ntau lawm xav tau huab cua los yog dej kub, tag nrho recycling oxidation decomposition ntawm organic pov tseg roj cua sov zog, txo lub zog noj ntawm tag nrho cov system. Yog li ntawd, TNV system yog ib txoj hauv kev zoo thiab zoo tshaj plaws los kho cov roj khib nyiab uas muaj cov kuab tshuaj organic thaum cov txheej txheem tsim khoom xav tau ntau lub zog cua sov. Rau cov tshiab electrophoretic xim txheej txheej ntau lawm kab, TNV rov qab thermal incineration system feem ntau tau txais.
TNV system muaj peb qhov chaw: khib nyiab roj preheating thiab incineration system, circulating cua cua sov system thiab cov cua sov hloov pauv tshiab. Cov khoom siv hluav taws xob pov tseg hauv nruab nrab cua sov hauv lub cev yog qhov tseem ceeb ntawm TNV, uas yog tsim los ntawm lub tshuab hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob thiab lub ntsiab flue regulating valve. Nws cov txheej txheem ua haujlwm yog: nrog lub siab siab lub taub hau kiv cua yuav cov khoom siv khib nyiab los ntawm chav ziab, tom qab cov pa khib nyiab incineration central cua sov ntaus ntawv built-in heat exchanger preheating, mus rau combustion chamber, thiab tom qab ntawd los ntawm lub burner cua sov, ntawm qhov kub thiab txias ( txog 750 ℃) rau cov organic pov tseg roj oxidation decomposition, decomposition ntawm cov organic pov tseg gas rau carbon dioxide thiab dej. Lub generated kub flue gas yog tawm los ntawm lub tshav kub exchanger thiab lub ntsiab flue gas yeeb nkab nyob rau hauv lub cub tawg. Cov hluav taws xob tawm hluav taws xob ua kom cov cua nkag hauv chav ziab kom muab lub zog cua sov xav tau rau chav ziab. Lub tshuab hluav taws xob hloov hluav taws xob hloov hluav taws xob tau teeb tsa rau qhov kawg ntawm qhov system kom rov qab cov khib nyiab cua sov ntawm qhov system rau qhov kawg rov qab. Cov huab cua ntshiab ntxiv los ntawm chav ziab yog rhuab nrog flue gas thiab xa mus rau hauv chav ziab. Tsis tas li ntawd, tseem muaj hluav taws xob tswj lub valve ntawm lub ntsiab flue gas pipeline, uas yog siv los kho lub flue roj kub ntawm lub qhov hluav taws xob ntawm lub cuab yeej, thiab qhov kawg emission ntawm flue roj kub tswj ntawm txog 160 ℃.
Cov yam ntxwv ntawm cov pa khib nyiab incineration hauv nruab nrab cua sov ntaus ntawv muaj xws li: lub sij hawm nyob twj ywm ntawm cov organic khib nyiab nyob rau hauv lub combustion chamber yog 1 ~ 2s; tus nqi decomposition ntawm cov organic pov tseg yog ntau tshaj 99%; cov cua sov rov qab tuaj yeem ncav cuag 76%; thiab qhov kev hloov pauv ntawm cov zis hluav taws xob tuaj yeem ncav cuag 26 ∶ 1, mus txog 40 ∶ 1.
Qhov tsis zoo: thaum kho cov pa roj carbon monoxide tsawg dua, cov nqi ua haujlwm siab dua; tubular cua kub exchanger tsuas yog nyob rau hauv kev lag luam tas mus li, nws muaj lub neej ntev.
1.2 Cov txheej txheem kho cov khoom pov tseg cov roj hauv cov tshuaj tsuag xim thiab chav ziab khaub ncaws
Cov pa tawm los ntawm chav tsev pleev xim thiab chav ziab khaub ncaws yog qhov tsis tshua muaj siab, tus nqi ntws loj thiab cov pa khib nyiab hauv chav tsev kub, thiab lub ntsiab lus ntawm cov pa phem yog cov tshuaj tsw qab hydrocarbons, cawv ethers thiab ester organic solvents. Tam sim no, txoj kev paub txawv teb chaws yog: thawj cov organic pov tseg roj concentration kom txo tau tag nrho cov organic pov tseg roj, nrog rau thawj adsorption txoj kev (activated carbon los yog zeolite li adsorbent) rau tsawg concentration ntawm chav tsev kub tshuaj tsuag xim tso pa adsorption, nrog kub kub gas stripping, concentrated tso pa roj siv catalytic combustion los yog regenerative thermal combustion txoj kev.
1.2.1 Activated carbon adsorption- -desorption thiab purification device
Siv cov honeycomb activated charcoal li cov adsorbent, Ua ke nrog cov hauv paus ntsiab lus ntawm adsorption purification, desorption regeneration thiab concentration ntawm VOC thiab catalytic combustion, siab huab cua ntim, tsis tshua muaj concentration ntawm cov organic pov tseg roj los ntawm honeycomb activated carbon adsorption kom ua tiav lub hom phiaj ntawm huab cua purification, Thaum cov pa roj carbon activated saturated thiab tom qab ntawd siv cua kub los tsim cov pa roj carbon activated, Desorbed concentrated organic teeb meem raug xa mus rau catalytic combustion txaj rau catalytic combustion, Organic teeb meem yog oxidized kom tsis muaj teeb meem carbon dioxide thiab dej, qhov kub hnyiab ntawm cov pa roj carbon monoxide ua kom sov. Cov cua txias los ntawm lub tshav kub exchanger, Qee qhov emission ntawm cov cua txias tom qab tshav kub pauv, Ib feem rau desorbitory regeneration ntawm honeycomb activated charcoal, kom ua tiav lub hom phiaj ntawm kev siv hluav taws xob pov tseg thiab txuag hluav taws xob. Tag nrho cov cuab yeej yog tsim los ntawm pre-filter, adsorption txaj, catalytic combustion txaj, nplaim retardancy, ntsig txog kiv cua, valve, thiab lwm yam.
Activated carbon adsorption-desorption purification device yog tsim los raws li ob lub hauv paus ntsiab lus ntawm adsorption thiab catalytic combustion, siv ob chav roj kev ua haujlwm tas mus li, ib chav catalytic combustion chamber, ob lub txaj adsorption yog siv alternately. Thawj cov organic pov tseg roj nrog cov pa roj carbon activated adsorption, thaum ceev saturation nres adsorption, thiab tom qab ntawd siv cov cua kub ntws los tshem cov organic teeb meem los ntawm cov pa roj carbon activated los ua kom cov pa roj carbon activated; cov organic teeb meem tau concentrated (concentration kaum ob lub sij hawm siab tshaj qhov qub) thiab xa mus rau lub catalytic combustion chamber catalytic combustion rau carbon dioxide thiab dej vapor tawm. Thaum lub concentration ntawm cov organic pov tseg cov pa mus txog ntau tshaj 2000 PPm, cov organic pov tseg roj muaj peev xwm tswj tau spontaneous combustion nyob rau hauv lub catalytic txaj yam tsis muaj cua sov sab nraud. Ib feem ntawm cov pa combustion tso pa tawm mus rau hauv cov huab cua, thiab feem ntau ntawm nws raug xa mus rau lub txaj adsorption rau kev tsim cov pa roj carbon activated. Qhov no tuaj yeem ua tau raws li kev sib xyaw thiab adsorption ntawm cov cua sov lub zog xav tau, kom ua tiav lub hom phiaj ntawm kev txuag hluav taws xob. Lub regeneration tuaj yeem nkag mus rau tom ntej adsorption; nyob rau hauv lub desorption, lub purification kev ua hauj lwm yuav ua tau los ntawm lwm adsorption txaj, haum rau ob qho tib si tas mus li kev khiav hauj lwm thiab intermittent lag luam.
Kev ua tau zoo thiab cov yam ntxwv: kev ua haujlwm ruaj khov, cov qauv yooj yim, nyab xeeb thiab txhim khu kev qha, txuag hluav taws xob thiab txuag hluav taws xob, tsis muaj kev ua qias tuaj thib ob. Cov khoom siv npog thaj tsam me me thiab muaj lub teeb yuag. Heev haum rau siv nyob rau hauv siab ntim. Cov pa roj carbon activated uas adsorbs organic pov tseg roj siv cov pa khib nyiab tom qab catalytic combustion rau stripping regeneration, thiab cov roj stripping xa mus rau catalytic combustion chamber rau purification, tsis muaj zog sab nraud, thiab lub zog txuag cov nyhuv tseem ceeb. Qhov tsis zoo yog tias cov pa roj carbon activated luv luv thiab nws cov nqi khiav haujlwm yog siab.
1.2.2 Zeolite hloov log adsorption- -desorption purification ntaus ntawv
Lub ntsiab Cheebtsam ntawm zeolite yog: silicon, txhuas, nrog adsorption muaj peev xwm, yuav siv tau raws li adsorbent; zeolite khiav yog siv cov yam ntxwv ntawm zeolite tshwj xeeb aperture nrog adsorption thiab desorption muaj peev xwm rau cov kuab paug organic, kom lub VOC tso pa roj nrog tsawg concentration thiab siab concentration, tuaj yeem txo cov nqi ua haujlwm ntawm cov khoom siv kho mob tom qab kawg. Nws cov yam ntxwv ntawm cov cuab yeej tsim nyog rau kev kho mob ntawm cov dej ntws loj, tsis tshua muaj siab, muaj ntau yam khoom siv organic. Qhov tsis zoo yog qhov kev nqis peev thaum ntxov yog siab.
Zeolite khiav adsorption-purification ntaus ntawv yog cov khoom siv roj purification uas tuaj yeem ua haujlwm tsis tu ncua adsorption thiab desorption. Ob sab ntawm lub log zeolite tau muab faib ua peb thaj chaw los ntawm cov khoom tshwj xeeb sealing: thaj chaw adsorption, desorption (regeneration) cheeb tsam thiab qhov chaw txias. Cov txheej txheem ua haujlwm ntawm lub kaw lus yog: zeolites rotating log rotates tsis tu ncua ntawm qhov ceev ceev, Kev ncig los ntawm thaj chaw adsorption, desorption (regeneration) cheeb tsam thiab qhov chaw txias; Thaum qhov tsawg concentration thiab gale ntim tso pa tawm tsis tu ncua dhau los ntawm thaj chaw adsorption ntawm tus khiav, VOC nyob rau hauv cov pa pa yog adsorbed los ntawm zeolite ntawm lub rotating log, Direct emission tom qab adsorption thiab purification; Cov organic hnyav adsorbed los ntawm lub log yog xa mus rau lub desorption (regeneration) cheeb tsam nrog kev sib hloov ntawm lub log, Tom qab ntawd nrog ib tug me me cua ntim cua sov cua tsis tu ncua los ntawm lub desorption cheeb tsam, VOC adsorbed rau lub log yog regenerated nyob rau hauv lub desorption cheeb tsam, VOC tso pa tawm ua ke nrog cov cua kub; Lub log mus rau qhov chaw txias rau qhov txias txias tuaj yeem rov qab adsorption, Nrog rau qhov kev sib hloov ntawm lub log rotating, Adsorption, desorption, thiab lub voj voog txias yog ua tiav, Ua kom muaj kev ua haujlwm tsis tu ncua thiab ruaj khov ntawm kev kho cov roj khib nyiab.
Cov khoom siv zeolite khiav yog qhov tseem ceeb, thiab cov pa tso pa uas muaj cov kuab tshuaj organic tau muab faib ua ob ntu: huab cua huv uas tuaj yeem tso tawm ncaj qha, thiab cov huab cua rov ua dua uas muaj cov ntsiab lus ntawm cov organic hnyav. Cov huab cua huv uas tuaj yeem tso tawm ncaj qha thiab tuaj yeem rov ua dua tshiab hauv cov xim pleev xim rau lub tshuab cua txias; qhov siab ntawm VOC roj yog li 10 npaug ntawm VOC concentration ua ntej nkag mus rau hauv lub cev. Cov roj concentrated yog kho los ntawm kub kub incineration los ntawm TNV rov qab thermal incineration system (los yog lwm yam khoom siv). Cov cua sov uas tsim los ntawm incineration yog ziab chav cua sov thiab zeolite stripping cua sov raws li, thiab lub tshav kub lub zog yog siv tag nrho kom ua tiav cov nyhuv ntawm lub zog txuag thiab emission txo.
Kev ua tau zoo thiab cov yam ntxwv: cov qauv yooj yim, kev saib xyuas yooj yim, kev pab lub neej ntev; Kev nqus tau siab thiab stripping efficiency, hloov cov huab cua siab qub thiab tsis tshua muaj siab VOC pov tseg roj rau hauv cov huab cua tsawg thiab siab concentration pov tseg roj, txo tus nqi ntawm cov khoom siv kho mob tom qab kawg; tsis tshua muaj siab poob qis, tuaj yeem txo qis zog siv zog; zuag qhia tag nrho cov txheej txheem kev npaj thiab modular tsim, nrog rau qhov tsawg kawg nkaus qhov yuav tsum tau muaj, thiab muab kev nruam thiab unmanned tswj hom; nws tuaj yeem ncav cuag lub teb chaws emission standard; adsorbent siv tsis-combustible zeolite, kev siv yog kev nyab xeeb dua; qhov tsis zoo yog kev nqis peev ib zaug nrog tus nqi siab.
Post lub sij hawm: Jan-03-2023
