流化床炉内煤热解气化过程中硫的释放与脱除研究

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1、洳≥：≥～博士学位论文⑧论文题目逋丝瘗垃凼堪垫鲤氢丝过猩主硫的叠越皇盥险盟究指导教师堡塑江、整垃达ABSTRACTAreviewwasmadeontheresearchadvancementaswelIasanalysismethodsofgaseoussulfurreleaseandremovalduringcoalpyrolysisandgasification，basedonwhichthemechanismofsulfurreleaseandretentioninfluidizedbedwasstudiedextensively．Themechanismoflimest

2、onesalfidationWasstudiedusingabench．scalebubblefluidizedbed．AnexperimentalanalysisWasmadeonthefactorsaffectingthedesulfurationofSOrbent，suchasthereactiontemperature，particlesizeofabSOrbent，sulfidationatmosphere，flowrateinfluidizedbed，speciesoflimestone，andcalcinationconditions,basedonwhich,t

3、hecharacteristicsofsulfurreleaseduringcoalpyrolysis．andthecapabilityofdesulfurizationinthebench．SCalefluidizedbedundertheconditionsofdifierenttemperatue，pyrolysisatmospheresandCa／SmoleratioofSOrbent，werefurtherstudied．Inordertoanalyzethemechanismofsulfurremovalbylimestone．thescanningelectron

4、microscope(SEM)andMercuryPorosimeterwereusedtoobserveandanalyzethemicroporestrcturesandpropertiesoftheuricalcined，calcinedandsulfidedlimestoneparticlesasSOrbent，whichrevealedthevariationlawsofthemicroporestructuresandpropertiesoflimestoneparticlesandalsoprovidedexplanationsforthedi船rentperfo

5、rmanceofsulfurremovalbylimestoneundervariousreactionconditions．BasedontheresearchoftestsabOVC，experimentswereconductedon1MWpolygenerationsystemofCFBpartialgasificationandcombustiontotestifytheresultsobtainedinformerexperiments．Recyclegaspyrolysisandairpartialgasificationwerecarriedoutindivid

6、uallytogetdifierentdesulfurationpropertiesof1imestoneundertheconditionsofvarioustemperature．atmosphereandCa／Smoleratio．Theresultsoftheexperimentsresultssupportedtheassumptionofrealizationrealizinglowdischargeofpollutantgasinpolygenerationsystem．Asyntheticmathematicalmodelconcerningsulfurrele

7、aseandretentionbylimestoneduringpartialgasificationinCFBgasifieronthebasisofpercolationtheoryofavoronoitessellationofmicroscopicpolyhedrawasestablished．nlesyntheticmodelincludstheCFBh37drodynamicmodel，thesulfurreleasemodelduringpartialgasificationo