湿法脱硫pH计安装方式的优化改进

Vol．33No．4HeilongjiangElectricPowerAug．20112011－01－241983－2005。pH11121．0636112．063028－pH－pHpHpH、。pHTK223．28B1002－1663201104－0316－02OptimizationofpHmeterinstallationforwetdesulphurizationNIEPengfei1WANGXuebin1BIANDongsheng1WANGJingwen21．HebeiDatangInternationalWangtanPowerGenerationCompanyLimitedTangshan0636112．TangshanJidongPowerMaintenanceLimitedCompanyTangshan063028ChinaAbstractThispaperexpoundsthesignificanceofpHmetermeasurementinlimestone－gypsumwetdesulphuriza-tionforthermalpowerplantanalyzestheinfluenceofpHmetermeasurementondesulphurizationthroughthechemicalreactiontechnologyofthelimestone－gypsumfluegasdesulphurizationimprovesthemeasurementofpHmeterinstallationandsolvesthecommonproblemsofsuchasabrasionerosionandsoonwetdesulphurization．KeywordswetdesulphurizationpHmetermeasurementabrasionimprovement0pH。pHpH、。、pH、。pHpH、、、。4apHpH、、pHpH。1pH2pH2pH。pH5．0～6．0。pHpHpHpH。。—613—33420118。SO2→SO2+H2O→H++HSO－3→2H++SO2－3CaCO3+H+→Ca2++HCO－3HCO－3+H+→CO2+H2OHSO－3+1/2O2→SO2－3+H+SO2－3+1/2O2→SO2－4Ca2++SO2－3+1/2H2O→CaSO3·1/2H2OCa2++SO2－4+2H2O→CaSO4·2H2O。pHSO2。SO2pH。pHpHSO2pHCa。pHpHCaCO3。pH＞5．8H+CapH=5．9CaCO33%CaSO4·2H2O90%SO2pHCaSO4·2H2OCaCO3。pHpH5．4～5．51．03。pH。2pHpH、。、、、pH。pH。3pHpH、pHpH。3．1pHpHpH。pH、pH。pH、。pH。。3．2pH1。1。10mpH5mpH5m。1pHpH。2pH2320—713—Vol．33No．4HeilongjiangElectricPowerAug．20111/123．8472．53/4．672．67/1．01．5/·a－14/a5010/%88/9．7111．021/a1/6a。110a5～7a50a8～10。。123．84。。4a．、、、、。b．。。c．。1．J．2005835－37．2．J．20083495－10．3．J．200930823－25．4．J．2006301223．5．CDEGSJ．2007331217－19．6．GISJ．200821715－17．317、。1。。、。3．3pH。pHpH。4pHpHpHpH。1．M．2007．2．J．2010457－59．檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵檵殝殝殝殝—023—