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1、ELSEVIERFUELPROCESSINGTECHNOLOGYFuelProcessingTechnology70(2001)159-169—www.elsevier.com/locate/fuprocTheinfluenceofprocessparametersondesulfurizationoftwoTurkishlignitesbyselectiveoxidation(OzgurSonmeza,E.SultanGirayb,*aDepartmentofChemistry,ArtsandScienceFaculty,MersinUniversity,Mersin,
2、TurkeybDepartmentofChemistry,ArtsandScienceFaculty,CukurovaUniversity,01330Adana,TurkeyReceived18August2000;receivedinrevisedform31January2001;accepted15March2001AbstractThechemicaldesulfurizationoftwohigh-sulfurTurkishligniteswasinvestigatedusingamixtureofhydrogenperoxideinaceticacid.Sul
3、furremovalwasmeasuredwithrespecttoparticlesize,reactiontime,reactiontemperatureandultrasonicirradiation.Ingeneral,allinorganicsulfurandsomeorganicsulfurwereremovedfromthesecoalsundermildconditions.Cayirhanligniteseemedmorereactivetowardsperoxyacedicacidatslightlyhighertemperaturesandlonge
4、rreactiontimes,butundertheseconditions,solubilitywashighandyieldsofsolidproductsdeclined.ReactiontimeandreactiontemperatureslightlychangedthelevelofsulfurremovalfromGedizlignite.ThelevelofdesulfurizationwaslargelyindependentoftheparticlesizeforGedizlignite,whilesulfurremovalfromCayirhanli
5、gniteseemeddependentoftheparticlesizereactiontemperatureandreactiontime.©2001ElsevierScienceB.V.Allrightsreserved.Keywords:Desulfurization;Coalcleaning;Selectiveoxidation1.IntroductionTheuseofhigh-sulfurcoalsforenergyproductionrequiresacleaningstagetomeetenvironmentalregulations.Demandfor
6、theutilisationofhigh-sulfurcoalreserveshasalsodemonstratedtheneedofeffectivecoaldesulfurizationmethods.Generally,cleaningiscarriedoutoverthefluegases,butchemicaldesulfurizationhasalsoreceivedCorrespondingauthor.Fax:+90-322-.E-mailaddress:esgiray@mail.cu.edu.tr(E.S.Giray).0378-3820/01/$-se
7、efrontmatter©2001ElsevierScienceB.V.Allrightsreserved.PII:S0378-3820(01)00172-2(O.Sonmez,E.S.Giray/FuelProcessingTechnology70(2001)159—169163attention.Physicalandmicrobialmethodswerealsoused.Usually,theremovalofinorganicsulfurcaneasilybeachievedbyphysicalcleaningpro
