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1、Availableonlineatwww.sciencedirect.comFuel87(2008)2304–2313www.fuelfirst.comPilot-trialandmodelingofanewtypeofpressurizedentrained-flowpulverizedcoalgasificationtechnologyZhenghuaDai*,XinGong,XiaoleiGuo,HaifengLiu,FuchenWang,ZunhongYuEastChinaUniversityofScienceandTechnology(ECUST),Shanghai200237,
2、PRChinaReceived11July2006;receivedinrevisedform9December2007;accepted12December2007Availableonline14January2008AbstractAnewtypeofpressurizedentrained-flowpulverizedcoalgasificationtechnologyhasbeendevelopedbyECUST.Itischaracterizedwithfournozzlessymmetricallydisposedontheupperpartofagasifier.Theeff
3、ectsofoperationconditionsongasification,N2ascarriergaswithmiddlepressuresuperheated(MPSH)steam,CO2ascarriergaswithMPSHsteamandCO2ascarriergaswithoutMPSHsteam,respectively,havebeentestedinthepilotplant.Thecarbonconversionofallgasificationschemesislargerthan99%.ForN2ascarriergas,thevolumefraction(D
4、ry)ofCO+H2islargerthan90%(v).ForCO2ascarriergas,thevolumefraction(Dry)ofCO+H2islargerthan92%(v)withMPSHsteamandlargerthan95%(v)withoutMPSHsteam.Atthesametime,basedonGibbsenergyminimizationprinciple,thepulverizedcoalgasificationsystemmodelwasbuilt.Thesim-ulationresultswellmatchedthepilot-trialdat
5、aunderdifferentoperationconditions.Themodelcanbeusedforthedesign,assessment,andimprovementoftheentrained-flowcoalgasificationsystem.Ó2007ElsevierLtd.Allrightsreserved.Keywords:Pilot-trial;Entrained-flow;Pulverizedcoalgasification;Gibbsenergyminimizationprinciple;Operationconditions1.Introductionwhic
6、hissymmetricallyopposedandmeetsat180°.Thegasificationchamberiscoveredbyrefractorybricktopro-Coalgasificationisimportanttoalotofprocessindus-tectfurnacewall.Therearethreerefractorylayersinthistrieswithcoalasmaterial,suchaschemicalproduction,pilotgasifier.Thefirstlayer(nearthegasificationzone)isliquid
7、fuelproduction,IntegratedGasificationCombinedCr–Al–Zrbrick,thesecondlayerisCr–Albrick,andtheCycle(IGCC)powergeneration,andpoly-generationsys-thirdlayer(nearthemetalwallofthegasifier)isAl2O3tem.Asitsfuturefocus,entrained-flowcoalgasifi
