石油焦
第4期徐茂蓉:黑液燃烧研究进展53
9 粘度
黑液的粘度高,即便是在较低的浓度(60%)下,也会造成液滴粘结,以至喷射困难,因此,一般要在100℃的温度下输送,以保证单颗液滴的形成。参考文献:
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advancedpressurizedcombustionandgasification[A].Pro2ceedingsofthe14thInternationalConferenceonFluidizedBedCombustion[C].ASME,NewYork,USA,1997.[7]KankkunenA.,MiikkulainenP.,J rvinenM.2001Inter2
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[8]bustionofapulverizedwoodparticle
-amodelingstudy,Nordic-con2ofEnergyandHy2Technology,ktionResearchProgress
XUMao2rong
(TheCollegeofMechanicalandEnergyEngineering,ZhejiangUniversity,Hangzhou310027,China)
Keywords:blackliquorcombustion; KraftProcess; modeling; fuelcharacteristicsAbstract:Blackliquor,themajorby2productofthekraftprocessforproductionofpulp,is
oneofthemostimportantindustrialfuelsinAmericaandNorthEurope.Eventhoughblackliquorcombustioninrecoveryboilershasbeenpracticedforoverhalfacentury,researchef2fortstowardimprovementofcombustionefficiencyandabatementofenvironmentalemis2sionsaremuchmorerecent.Atfirst,thispapergivesabriefdescriptionofthekraftprocessandblackliquorcombustionprocess,andreviewsrecentresearchadvancesonblackliquorcombustionmodelingabroad,thenanalysesitsfuelcharacteristicsonthebasisofcompari2sonbetweenblackliquorandotherfuels.
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pulverizedcoal2firedboiler; petroleumcoke; coal; blendedcom2Keywords:CFB; bustion
Abstract:Petroleumcokesarebyproductsofsolidresidualsfromthecruderefining
process.Thepetroleumcokeiswithlittleashcontentandvolatilecontent.Substantialcon2tentsofvanadium,nickel,nitrogenandsulfurinitarethemaincauseforpollutantsemissionandfiresidefoulingorcorrosionproblem.Becausemostofpetroleumcokehashighsulfurcontent,itisquitepopulartoburnpetroleumcokeandmakeheatrecovery.Inthispaper,petroleumcokeblendingcombustionexperimentswithcoalareconductedona220t/hcom2mercialpulverizedcoalboilerandaCFBtestrigrespectively.Bycomparison,itisaclearerandmoreeffectivewaytoburnpetroleumcokeblendedwithcoalinthecirculatingfluidizedbedcombustor.