超声波辅助共沉淀法制备高温煤气脱硫剂铁酸锌

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1、足％：j中I，、’7’颀l‘n}；7t7j。、≯f?i睑炙precursors?thenadoptedcalcinationtogainactivecomponentsofzincferrite，andthezincfertilepreparedhavethespinelstructrure．Thentreatedzincferriteasactivecomponents，andusedkaolinasstructuraladditivetogethightemperaturegasdesulfurizer．Thet

2、hesisalsocharacterizedzincferritedesulfurizerbymeansofXRD，SEMetc．TheresultsshowedthatthetemperatureandtimeofcalcinationhadmoreeffectsOffcrystalsizeandpropertyofdesulfurizer．Thethesisexploreddesulfurizationandregenerationunderthefixed．．bedreactorandsimulatedcoal

3、gasatmosphere．Theconclusionsareasfollows：1。Itisfeasibletoadoptcoprecipitationunderultrasonictogetzincferrite，andtheZnFe204ashightempetaturecoalgasdesulfurizerwasprepared，whichisexcellenthightemperaturedesulfurizer．2．Thecontentofzincferriteinthesorbentisaround35

4、％inordertoachievehighsulfurcapacityandhightransformratio，Thereactivitycouldbeimprovedbyadditionoflittlestarchtothezincferritesorbents．3．Intheprocessofcoprecipitationundertheultrasonicradiation，componentuniformedwasgained，smallparticledzincferriteprecursorsforme

5、dspinelstructrure，Zincferritecrystalgraingainedwaswelldistributed，whoserangewasfrom40—80nm，andthecrystalgrainappearedglobal．4．Comparedthezincferritegainedunderultrasonicwiththezincferritegainedbynormalmethod，thecrystalphaseoftheformerismorecomplete，andthecrysta

6、lgrainiswelldistributed．Theresultsshowedthattheultrasonicpromotedtheformationofitsconfiguration．5．Thezincferritegainedbyultrasonicshowedgoodandstablepropertiesinfhepro’cessofdesulfurizationexperiment．WhentheconcentrationofinletH二Sis3023ppm．thatofoutletkeepsabou

7、t30ppm．6．Theresultsshov,，edthedesulfurizationefficienc．yoftheexccllentdc吼Jifurizel_is99％inthefixedreactorexperiment．，、』复j[}iI，，、学0死{+彬{究’{。’≯f■沦文KEYWORDS：hightemperaturecoalgasdesulfurizer,zincferrite，ultrasonic，copreclpltatlon声明尸明本人郑重声明：所呈交的学位论文，是本人在指导教师的指导下，独

8、立进行研究所取得的成果。除文中已经注明引用的内容外，本论文不包含其他个人或集体已经发表或撰写过的科研成果。对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。本声明的法律责任由本人承担。论文作者签名：关于学位论文使用权的说明本人完全了解太原理工大学有关保管、使用学位论文的规定，其中包括：①学校有权保管、并向有关部门送交学位论文的原件