influence of coal-feed rates on bituminous coal ignition in a full-scale tiny-oil ignition burner

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1、本科毕业论文外文文献及译文文献、资料题目：InfluenceofCoal-feedRatesonBituminousCoalIgnitioninAFull-scaleTiny-oilIgnitionBurner文献、资料来源：期刊文献、资料发表（出版）日期：2009.8.5院（部）：热能工程学院专业：热能与动力工程外文文献InfluenceofCoal-feedRatesonBituminousCoalIgnitioninAFull-scaleTiny-oilIgnitionBurnerABST

2、RACTAtiny-oilignitionburnerhasbeenproposedtoreduceoilconsumptionduringthefiring-upprocessandpartial-loadoperations.Toinvestigatetheinfluenceofdifferentfeedratesonbituminouscoalignitioninthetiny-oilignitionburner,full-scalereacting-flowexperimentswere

3、performedonanexperimentalsetup.Theignitionburnerwasidenticaltothatnormallyusedinan800-MWeutilityboiler.Gastemperaturedistributionsintheburnerwereobtainedatcoal-feedratesof2,3,4,and5tonnes/h.CharburnoutandreleaseofCandHwereobservedattheexitoftheburner

4、nozzle.GascompositionssuchasO2andCOweremeasuredinthecenteroftheburner.Achangeinresistancewasobtainedwithintheburner.Asavingof90%overpreviousoilconsumptionwasgainedinthefiring-upprocessbyusingthenewoil-guntechnology.Keywords:Tiny-oilignitionburner；Coa

5、l-burningutilityboiler；Coal-feedrates1.IntroductionTofire-upaboiler,oilisprimarilyusedtopre-heatthecombustionchamberofafurnacebringingittoitsoperatingtemperature.Generally,oilisdeliveredunderhighpressurebyanoil-gunwithadeliverycapacityofabout1tonne/h

6、.Therefore,intheinitialfiringupprocessofabituminouscoal-fired300MWeutilityboiler,about100tonnesoffueloilwouldbeconsumed.Concernsoverincreasingeconomiccostsinpulverizedcoal-firedpowerstationsarisingfromoilconsumedinthefiring-upprocessandpartial-loadop

7、erationshasspurredinterestindevelopingoil-freeandtiny-oilignitionburners.Variousinvestigatorshavereportedstudiesofoil-freeignitionburners.Masayaetal.studiedthestabilizationofpulverizedcoalcombustionusingaplasma-assistedburner,whileKaniloetal.investig

8、atedtheignitionandcombustionofpulverizedcoalusingamicrowave-assistedburner.InChina,Zhangetal.describedtheirapplicationofplasmaignitiontechnologyinbituminouscoal-firedboilers.However,forsuchburners,twomainproblemsarise:difficultiesinextendingthecapaci