外文翻译21790

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1、安徽工业大学毕业设计论文安徽工业大学毕业设计（论文）说明书英文翻译专业热能与动力工程班级热101姓名李天鹏学号109014014指导教师孙运兰二〇一四年六月七日19安徽工业大学毕业设计论文文献阅读及译文文献阅读PulverizedCoalCombustionandNOXEmissionsinHighTemperatureAirFromCirculatingFluidizedBedLüQing-gang1,ZHUJian-guo2（1.InstituteofEngineeringThermophysics,ChineseAcademyofScience

2、s,HaidianDistrict,Beijing100080,China;2.GraduateSchoolofChineseAcademyofScience,HaidianDistrict,Beijing100080,China)ABSTRACT:Technologyofhightemperatureaircombustionwiththeadvantageofpollutantsreductionisexpectedtobeappliedtopulverizedcoalcombustion.Experimentsonpulverizedbitum

3、inouscoalcombustioninhightemperatureairfromacirculatingfluidizedbedweremadeinadown-firedcoalcombustorwiththediameterof220mmandtheheightof3000mm.Testresultsshowedthattemperatureprofilealongtheaxisofthedown-firedcoalcombustorwasuniformandtheNOXemissionswereabout252~294mg/m3(6%O2)

4、,35%~44%lowerthantheregulation.TheNOXconcentrationofthehightemperatureairfromthecirculatingfluidizedbedhadlittleinfluenceontheconversionratioofcoal-NtoNOXinthedown-firedcoalcombustor,andtheconversionratioofcoal-NtoNOXcouldbereducedto25%.KEYWORDS:hightemperatureaircombustion；cir

5、culatingfluidizedbed；pulverizedcoal；nitrogendioxide19安徽工业大学毕业设计论文摘要高温空气燃烧技术具有低污染物排放的优越性能，有望应用于煤粉的燃烧。搭建了煤粉高温空气燃烧热态试验台，由下行火焰的煤粉燃烧室和提供高温空气的循环流化床组成，煤粉燃烧室内径为220mm、高3000mm。用一种烟煤做了燃烧试验，试验结果表明：煤粉燃烧室上下温度均匀；煤粉燃烧室上部的还原区当量系数为0.8时，NOX排放水平在252~294mg/m3之间，低于国家2003年制定的火电厂污染物排放标准35%~44%；循环流化床提供

6、的高温空气中NOX的浓度对煤粉燃烧室内煤粉中的N向NOX的转化比影响很小；煤粉中的N向NOX的转化比可降低到25%。关键词：高温空气燃烧；循环流化床；煤粉；氮氧化物19安徽工业大学毕业设计论文INTRODUCTIONTechnologyofhightemperatureaircombustionhasbeendevelopedmainlytogaseousfuelswithadvantagesofenergysavingabout60%andpollutantsreductionabout25%[1-3].Withthedevelopingofhig

7、htemperatureaircombustion,itisexpectedthatthetechnologycanalsobeusedtosolidfuelscombustion,likepulverizedcoalcombustion.In2002,SudastudiedthecombustionbehaviorandNOXemissionsofpulverizedcoalinhightemperatureair[4].Theexperimentsrevealedthatthehightemperatureaircombustioncouldsi

8、gnificantlyreduceNOXemissionsandimprovecoalburnout.Als