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607Vol60No720097CIESCJournalJuly2009Fe2O3公旭中1,2,郭占成1,3,王志1(1,,100190;2,100049;3,100083):;;;:TQ0288:A:0438-1157(2009)07-1707-07ExperimentalstudyonmechanismofloweringignitiontemperatureofanthracitecombustioncatalyzedbyFe2O3GONGXuzhong1,2,GUOZhancheng1,3,WANGZhi1(1StateKeyLaboratoryofMultiphaseComplexSystems,InstituteofProcessEngineering,ChineseAcademyofSciences,Beijing100190,China;2GraduateUniversityofChineseAcademyofSciences,Beijing100049,China;3KeyLaboratoryofRecyclingandEcologicMetallurgy,MinistryofEducation,UniversityofScienceandTechnologyBeijing,Beijing100083,China)Abstract:TGDTGandDTAdeterminationindicatedthatignitiontemperatureofanthracitewasloweredfrom458to405byadditionof10%catalystFe2O3Basedonthenatureofanthraciteignitiontemperature,pyrolysisconversionandpyrolysisgascompositionduringthecatalyticcombustionwereexaminedTheresultsshowedthatwithFe2O3additionanthracitepyrolysisconversionwas30%at405andcomponentswithhigherheatingvalueincreasedinthepyrolysisgasHowever,withoutFe2O3additionpyrolysisconversionwas18%atignitiontemperatureItcouldbeconcludedthattheheatfromthehomogeneouscombustionofcatalyticcombustionwashigherthanthatofnoncatalyticcombustionTGDTGindicatedcombustionconversionof10%atignitionSEMimagesofcharsindicatedroughsurfaceofcharwithplentyofsmallporesBETofcharfromcatalyticcombustionwas170m2g-1whileBETofcharfromnoncatalyticcombustionwasonly128m2g-1,whichcouldbethemainreasonforloweringignitiontemperatureTheresultsfromoxygenadsorptionexperimentshowedincreasedoxygencontentofcoalwithcatalystaddition,whichcausedfasteroxygenadsorptionatalowertemperatureandshortenedthetimetogetrequiredoxygenconcentrationandheataccumulationforignition,thustheignitiontemperaturewaslowered.Keywords:catalyticcombustion;ignitiontemperature;mechanism;pyrolysis2008-12-23,2009-03-29::(1976!),,:(20060105Z2025)Receiveddate:2008-12-23.Correspondingauthor:Prof.GUOZhancheng,guozc@homeipeaccnFoundationitem:supportedbytheHightechResearchandDevelopmentProgramofChina(20060105Z2025).,,,[14],[512],,,[6,910][56,1112],[1315]:,,,,,,,(),,,,,,,,[16],,,,,,,,(),,,3[1718]:∀,,;#,();∃,(),,,,,111,,GB/T474100~150m,[16]Fe2O3,,99%,150m10min;10%12(ZRY2P,)24mm,,5mm;100mlmin-1(,,)10min-195,5min,,15min-1(,)1000,100~1000NetzschSTA449C,FTIRBrukerEQUINOX55,,:7(60mm%30mm%15mm)2g,650(,),5min(,3min)1,,BETSEM10%()XRD(,X&PertHighScore)17086010%20%40%60%221Fe2O31(a),,,1420s,Fe2O31252s,Fe2O3,TGDTG[16,19]458,Fe2O3405,Fe2O3531(b),Fe2O3DTA,DTA,[20],,,DTA,,,(),x,1(b),1338s,1528s409457,TGDTG,DTA,Fe2O322Fe2O3,,,,,;,,,,23,32,405Fe2O330%,458(18%),,,[16]041%min-1;035%min-1,17097:Fe2O3,,,,3,3,,,,,,,[2122],,3(b)(405,420),,,[16],,,23,200,,3,CO2,()[17]234[2326],,,(MI)175%,MI170%,,(Fe2O3),4,,[26],10%,,,,,,,∋([2325],,,020%min-1,027%min-14,(),350,,,,[26],,,,,350,,5,10%,17106010%,,,,[2324],,,35,,,,,,BET6BET,50%,BET;50%,BET50%,,BETBET,BETBET;50%,,,,,BET1,10%,6,10%,,,50%,,,,,,,,BET6BETFig6VariationofBETwithcombustionconversion24XRD7,Fe2O3,Fe2O3FeO,,,,Fe2O317117:Fe2O3FeO,,(COCH4H2),,,Fe2O3FeO,,FeO,Fe2O3Fe2O3FeO,CCO2Fe2O3[13,15]7XRDFig7XRDanalysiswithvariouscombustionconversion25Fe2O3,,,,,,,,,,,,3TGDTGDTAFe2O3,53,3:∀,;#SEMBET,();∃,,,References[1]KurtHedden,AchimWilhelmCatalyticeffectsofinorganicsubstancesonreactivityandignitiontemperatureofsolidfuelsGermanyChemicalEngineering,1980,3(2):142147[2]ChenHaifeng(),ShaXingzhong(),XuYiqing(),HangYuezhen(),GaoJinsheng().Catalyticignitionpropertyofcoal()):TheeffectsofdifferentcatalystsJournalofFuelChemistryandTechnology(),1993,21(3):180184[3]WuZhenghua,XuLing,WangZhongzhi,ZhangZengruiCatalyticeffectsontheignitiontemperatureofcoalFuel,1998,77(8):891893[4]MarttiJAho,JouniPHamalainen,JouniLTummavuoriCatalyticeffectsofmetalsonpeatcombustionFuel,1991,70(10):11431145[5]TanZhicheng(),WangShudong(),WuDiyong(),LiLi().Thermogravimetricstudyabouttheacceleratingeffectofcoal,burningadditiveoncombustibilityofcoalandgangueChineseJournalofCatalysis(),1999,5(3):263266[6]YuanZhongshan(),WuDiyong(),TanZhicheng(),MengShuanghe(),WangShudong().StudyonmechanismofintegratedcatalysisforsulfurretentionandcoalcombustionJournalofFuelChemistryandTechnology(),2005,33(3):267272[7]WangShudong(),WuDiyong().StudyoneffectsofadditiveoncoalcombustioncharacteristicsJournalofFuelChemistryandTechnology(),1998,26(3):248251[8]ChengJun(),ZhouJunhu(),LiuJianzhong(),ZhouZhijun(),CaoXinyu(),CenKefa().CatalysiseffectofcarbidelimeonvariouscoalcombustionJournalofFuelChemistryandTechnology(),2004,32(1):3742[9]TianJun(),ZhuBaiming(),YinJingqun().CatalyticcombustionkineticsoftinpotcoaldopedwithrareearthcoalburningadditivebythermogravimetricexperimentChineseRareEarths(),2002,23(2):1619[10]LiXG,MaBG,XuL,LuoZT,WangKCatalyticeffectofmetallicoxidesoncombustionbehaviorofhighashcoalEnergyandFuels,2007,21:26692672[11]LiYulin().MechanismandimpactofUSsolidadditiveonperformanceofcoalcombustionJournalofFuzhouUniversity:NatureScience(:),1999,27(6):116121171260[12]XuGuheng(),JiangJunyan(),ZhangHesheng().MechanismofcatalysedignitionofcoalJournalofTongjiUniversity(),1993,21(3):415420[13]DouglasWMckeeMechanismsofthea