Raws li cov chaw tsim hluav taws xob hluav taws xob tshiab tau los hauv online kom tau raws li qhov xav tau ntawm hluav taws xob ntau ntxiv hauv Tebchaws Meskas thiab thoob plaws ntiaj teb, muaj kev xav tau ntau ntxiv los ntxuav cov nroj tsuag emissions kom tau raws li cov cai huv huv. Cov twj tso kua mis tshwj xeeb thiab cov li qub pab kom ua haujlwm tau zoo ntawm cov tshuab ntxhua khaub ncaws thiab tuav cov slurry abrasive siv hauv flue gas desulfurization (>FGD) txheej txheem.

Nrog rau tag nrho cov thev naus laus zis hauv kev tsim cov khoom siv hluav taws xob tshiab nyob rau xyoo pua dhau los, ib yam uas tsis tau hloov pauv ntau yog peb qhov kev cia siab rau fossil fuels, tshwj xeeb tshaj yog thee, los tsim hluav taws xob. Ntau tshaj li ib nrab ntawm cov hluav taws xob hauv Tebchaws Meskas yog los ntawm cov thee. Ib qho txiaj ntsig ntawm kev hlawv cov thee hauv cov chaw tsim hluav taws xob yog qhov tso tawm ntawm sulfur dioxide (SO 2) roj.

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TL FGD Pump

Nrog txog 140 lub tuam txhab hluav taws xob hluav taws xob tshiab hauv cov raj xa dej hauv Tebchaws Meskas ib leeg, kev txhawj xeeb txog kev ua kom tau raws li cov kev cai ntawm huab cua huv ntawm no thiab thoob ntiaj teb tab tom ua txoj hauv kev rau cov chaw tsim hluav taws xob tshiab thiab tam sim no - nruab nrog cov emissions "scrubbing" systems. SO2 tam sim no raug tshem tawm ntawm cov roj flue los ntawm ntau txoj hauv kev uas feem ntau hu ua flue gas desulfurization (FGD). Raws li Lub Chaw Tswj Xyuas Hluav Taws Xob Hluav Taws Xob, uas muab kev txheeb xyuas hluav taws xob rau tsoomfwv Meskas, cov khoom siv hluav taws xob yuav tsum nce lawv cov chaw FGD mus rau 141 gigawatts ntawm lub peev xwm ua raws li lub xeev lossis tsoomfwv cov thawj coj.

FGD tshuab tuaj yeem siv cov txheej txheem qhuav lossis ntub dej. Cov txheej txheem ntub dej FGD feem ntau siv cov tshuaj txhuam hniav (feem ntau yog cov limestone slurry) kom nqus SO2 los ntawm cov dej ntws tawm. Cov txheej txheem FGD ntub dej yuav tshem tawm ntau dua 90% ntawm SO2 hauv cov pa roj thiab cov khoom siv. Hauv cov tshuaj tiv thaiv yooj yim, cov limestone hauv slurry hloov mus rau calcium sulfite thaum cov limestone slurry reacts nrog cov roj flue hauv lub absorber. Hauv ntau chav FGD, huab cua yog cua tshuab rau hauv ib feem ntawm lub absorber thiab oxidizes calcium sulfite rau calcium sulfate, uas tuaj yeem lim tau yooj yim thiab dewatered los ua kom qhuav, cov khoom ruaj khov dua uas tuaj yeem muab pov tseg hauv qhov chaw pov tseg lossis muaj peev xwm muag tau. ib qho khoom siv rau kev ua cov cement, gypsum wallboard los yog ua chiv additive.

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Slurry Pump

Pump xaiv rau FGD

Vim tias qhov no limestone slurry yuav tsum tau txav mus los ntawm cov txheej txheem kev lag luam nyuaj, xaiv cov twj tso kua mis thiab cov li qub - nrog rau qhov muag rau lawv cov nqi tag nrho lub neej thiab kev saib xyuas - yog qhov tseem ceeb.

Cov txheej txheem FGD pib thaum cov limestone pub (pob zeb) txo qhov loj los ntawm crushing nws nyob rau hauv lub pob zeb thiab ces tov nrog dej nyob rau hauv ib tug slurry mov tank. Cov slurry (kwv yees li 90% dej) yog tom qab ntawd tso rau hauv lub tank nqus. Txij li thaum qhov sib xws ntawm limestone slurry nyiam hloov, kev nqus dej tuaj yeem tshwm sim, uas tuaj yeem ua rau cavitation thiab twj tso kua mis tsis ua haujlwm.

Ib lub twj tso kua mis raug rau daim ntawv thov no yog rau nruab ib lub twj tso kua mis carbide slurry los tiv thaiv cov hom mob no. Cemented hlau twj yuav tsum tau tsim los tiv thaiv cov kev pabcuam slurry hnyav tshaj plaws thiab tseem tsim los kom yooj yim rau kev tswj thiab nyab xeeb. Qhov tseem ceeb rau kev tsim vaj tsev ntawm lub twj tso kua mis yog cov kabmob hnyav hnyav thiab cov ncej, cov phab ntsa tuab ntxiv thiab hloov tau yooj yim hnav. Tag nrho cov nqi ntawm lub neej kev txiav txim siab yog qhov tseem ceeb thaum qhia cov twj rau kev ua haujlwm hnyav xws li kev pabcuam FGD. High chromium alloy twj tso kua mis yog qhov zoo tagnrho vim yog corrosive pH ntawm slurry.

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Slurry Pump

Lub slurry yuav tsum tau twj tso kua mis los ntawm lub tank absorber mus rau sab saum toj ntawm cov tshuaj tsuag ntauwd, qhov twg nws yog sprayed downward raws li ib tug zoo pos huab uas reacts nrog cov upward-tsov flue roj. Txij li cov twj tso kua mis feem ntau muaj li ntawm 16,000 txog 20,000 nkas loos ntawm slurry ib feeb nrog lub taub hau ntawm 65 thiab 110 ko taw, roj hmab-lined>slurry twj yog cov twj tso kua mis zoo tshaj plaws. Ntxiv dua thiab, kom ua tau raws li kev xav txog kev siv lub neej, cov twj tso kua mis yuav tsum tau nruab nrog lub taub loj loj rau kev ua haujlwm qis dua thiab hnav lub neej ntev dua, thiab nrog cov khoom siv roj hmab hloov pauv rau kev kho ceev. Nyob rau hauv ib tug raug hluav taws xob hluav taws xob cog, ob mus rau tsib lub twj tso kua mis yuav siv nyob rau hauv txhua tus pej thuam tshuaj tsuag.

Txij li cov slurry tau sau rau hauv qab ntawm tus pej thuam, cov twj siv roj hmab ntxiv yuav tsum tau thauj cov slurry mus rau lub tank cia, cov pas dej tailings, cov chaw kho cov khib nyiab lossis lim xovxwm. Nyob ntawm seb hom FGD txheej txheem, lwm cov qauv twj tso kua mis muaj rau slurry paug, ua ntej-scrubber rov qab thiab daim ntawv thov roj sump.

Yog tias koj xav paub ntau ntxiv txog qhov zoo tshaj plaws FGD twj tso kua mis, txais tos rau >tiv tauj peb hnub no los yog thov ib nqe lus.