Siv lub tshuab hluav taws xob hluav taws xob hluav taws xob hluav taws xob hluav taws xob flue gas desulfurization (FGD) ua piv txwv, qhov kev tshuaj xyuas no tshuaj xyuas cov teeb meem hauv FGD cov dej khib nyiab, xws li kev tsim tsis zoo thiab cov khoom siv tsis zoo. Los ntawm ntau qhov kev ua kom zoo thiab kev hloov kho, cov khoom siv hauv cov dej khib nyiab tau txo qis, ua kom lub cev ua haujlwm ib txwm muaj thiab txo cov nqi khiav lag luam thiab kev saib xyuas. Cov tswv yim daws teeb meem thiab cov lus pom zoo tau thov, muab lub hauv paus ruaj khov rau kev ua tiav xoom cov dej khib nyiab pov tseg yav tom ntej.
1. Txheej txheem txheej txheem
Coal-fired fais fab nroj tsuag feem ntau siv cov limestone-gypsum ntub dej FGD txheej txheem, uas siv limestone (CaCO₃) ua cov absorbent. Cov txheej txheem no inevitably tsim FGD cov dej khib nyiab. Hauv qhov no, ob lub FGD ntub dej sib koom ua ke ib chav kho dej khib nyiab. Cov dej khib nyiab yog gypsum cyclone overflow, ua tiav siv cov txheej txheem ib txwm siv (triple-tank system) nrog lub peev xwm tsim ntawm 22.8 t / h. Kev kho cov dej khib nyiab yog siv 6 km mus rau qhov chaw pov tseg rau kev tshem tawm plua plav.
2. Cov teeb meem loj hauv Cov Txheej Txheem Tseem Ceeb
Lub diaphragm ntawm dosing twj feem ntau xau los yog ua tsis tiav, tiv thaiv kev txhaj tshuaj tsis tu ncua. Cov nqi tsis ua haujlwm siab hauv cov phaj-thiab-them lim xovxwm thiab cov twj sludge nce kev xav tau ntawm kev ua haujlwm thiab cuam tshuam cov sludge tshem tawm, ua rau qeeb sedimentation hauv clarifiers.
Cov dej khib nyiab, los ntawm gypsum cyclone ntws, muaj qhov ntom ntom ntawm kwv yees li 1,040 kg / m³ nrog cov ntsiab lus ntawm 3.7%. Qhov no ua rau lub cev tsis muaj peev xwm ua kom tsis tu ncua tso dej kho thiab tswj cov teeb meem ion concentrations hauv lub absorber.
3. Kev hloov kho ua ntej
Txhim kho Tshuaj Dosing:
Cov tso tsheb hlau luam ntxiv tau muab tso rau saum lub tank triple-tank system kom ntseeg tau tias kev siv tshuaj zoo ib yam ntawm lub ntiajteb txawj nqus, tswj los ntawm ib qhoonline concentration meter.
Qhov tshwm sim: Kev txhim kho dej zoo, txawm hais tias cov sedimentation tseem xav tau. Kev tso tawm txhua hnub txo rau 200 m³, uas tsis txaus rau kev ua haujlwm ruaj khov ntawm ob lub FGD systems. Dosing nqi tau siab, nruab nrab 12 CNY / ton.
Reusing Wastewater rau Kev Tiv Thaiv Plua Plav:
Cov twj tso kua mis tau muab tso rau ntawm qhov ntsuas hauv qab kom hloov ib feem ntawm cov dej khib nyiab rau ntawm qhov chaw tshauv rau kev sib xyaw thiab humidification.
Qhov tshwm sim: Txo qhov siab ntawm qhov chaw pov tseg tab sis tseem ua rau muaj kev kub ntxhov thiab tsis ua raws li cov qauv kev pov tseg.
4. Tam sim no Optimization Measures
Nrog rau cov kev cai nruj dua ib puag ncig, kev ua kom zoo ntxiv yog tsim nyog.
4.1 Kev kho tshuaj lom neeg thiab kev ua haujlwm tsis tu ncua
Khaws pH ntawm 9-10 los ntawm kev siv tshuaj ntau ntxiv:
Kev siv txhua hnub: txiv qaub (45 kg), coagulants (75 kg), thiab flocculants.
Xyuas kom muaj qhov tso tawm ntawm 240 m³ / hnub ntawm cov dej ntshiab tom qab ua haujlwm tsis sib xws.
4.2 Repurposing lub Emergency Slurry Tank
Dual-siv ntawm lub tank thaum muaj xwm ceev:
Thaum lub sij hawm downtime: Slurry cia.
Thaum lub sijhawm ua haujlwm: Natural sedimentation rau cov dej ntshiab extraction.
Optimization:
Ntxiv li qub thiab cov kav dej ntawm ntau qib tank kom ua haujlwm tau yooj yim.
Sedimented gypsum raug xa rov qab mus rau qhov system rau dewatering lossis rov siv dua.
4.3 Kev hloov kho thoob plaws qhov system
Txo cov khib nyiab pov tseg hauv cov dej khib nyiab los ntawm kev xa cov lim dej los ntawm lub tshuab nqus tsev dewatering mus rau cov dej khib nyiab tsis tuaj.
Txhim kho sedimentation efficiency los ntawm shortening natural settling lub sij hawm los ntawm tshuaj dosing nyob rau hauv thaum muaj xwm ceev tso tsheb hlau luam.
5. Cov txiaj ntsig ntawm kev ua kom zoo
Txhim kho muaj peev xwm:
Kev ua haujlwm tsis tu ncua nrog kev tso tawm txhua hnub ntawm ntau dua 400 m³ ntawm cov dej khib nyiab raws cai.
Siv tau zoo ion concentration tswj hauv lub absorber.
Kev ua haujlwm yooj yim:
Tshem tawm qhov xav tau ntawm lub phaj-thiab-thooj lim xovxwm.
Txo kev ua haujlwm rau sludge tuav.
Txhim khu kev ntseeg tau zoo:
Kev hloov pauv ntau dua hauv cov sijhawm ua dej khib nyiab.
Cov cuab yeej siv siab dua.
Kev txuag nqi:
Kev siv tshuaj txo qis rau txiv qaub (1.4 kg / t), coagulants (0.1 kg / t), thiab flocculants (0.23 kg / t).
Tus nqi kho mob qis dua rau 5.4 CNY / ton.
Kev txuag nyiaj txhua xyoo ntawm kwv yees li 948,000 CNY hauv cov nqi tshuaj.
Xaus
Kev ua kom zoo ntawm FGD cov dej khib nyiab ua rau muaj kev txhim kho zoo, txo cov nqi, thiab ua raws li cov qauv kev nruj dua ib puag ncig. Cov kev ntsuas no ua ib qho kev siv rau cov tshuab zoo sib xws uas nrhiav kom ua tiav cov dej khib nyiab pov tseg thiab kev ruaj ntseg mus ntev.
Post lub sij hawm: Jan-21-2025
