欢迎来到天天文库
浏览记录
ID:52487537
大小:206.21 KB
页数:3页
时间:2020-03-28
《掺烧劣质煤对供电煤耗影响的分析.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第35卷第3期2014年6月电力与能源353掺烧劣质煤对供电煤耗影响的分析颜雪琴(上海电力股份有限公司吴泾热电厂,上海200241)摘要:燃煤机组掺烧劣质煤,除了增加维护和维修成本外,还会影响锅炉效率、蒸汽参数、辅机电耗等指标。为了定量分析掺烧劣质煤对机组供电煤耗的影响,以12号机组不掺烧(全神木煤)工况为基准,340g/kWh达标煤耗为标杆,分别比对240、180、120Mw三种工况下掺烧劣质煤的供电煤耗。试验结果为:240Mw电负荷,掺烧劣质煤后供电煤耗上升2.869g/kWh;180MW电负荷,掺烧劣质煤后供电煤耗上升3.987g/kWh;120Mw电负荷,掺烧劣质煤后供电煤
2、耗上升3.769g/kWh。为此建议:要控制好掺烧大混煤的煤量,可适当掺烧些褐煤等煤种来对冲;要尽量运行高位磨煤机,通过燃烧器摆角和风烟挡板进行调整,抬高再热器出口温度;要综合考虑掺烧大混煤的比例。关键词:掺烧劣质煤;供电煤耗率;定量分析中图分类号:TK227.1文献标志码:A文章编号:2095—1256(2014)03—0353—03AnalysisofMixedBurningInferiorCoalforPowerSupplyCoalConsumptionRateInfluenceYanXueqin(ShanghaiElectricPowerCo.,Ltd.,WujingThe
3、rmalPowerPlant,Shanghai200241,China)Abstract:Mixedburninginferiorcoalincoal—firedunitswillnotonlyincreasethecostofmaintenanceandre—pair,butalsoaffecttheindicatorsforefficiencyoftheboiler,steamparametersandauxiliarypowerconsump—tion.Toquantitativeanalysisofimpactonthepowersupplycoalconsumptiono
4、fworkingunitwhenmixedburninginferiorcoal,chooseworkingconditionofNo.12workingunit,whichdidntburninginferiorcoal(containsfullofShenmuCoa1)and340g/kWhforcoalconsumptionasabenchmark,tOrespectivelycomparedwiththepowersupplycoalconsumptionofmixedburninginferiorcoalunder240MW。180MW,120MWworkingcondi
5、tions.Thetestresultis:whenmixedburninginferiorcoal,powersupplycoalconsumptionrose2.869g/kWhfor240MWelectricalload.Powersupplycoalconsumptionrose3.987g/kWhfor180MWelectricalload.Powersupplycoalconsumptionrose3.769g/kWhfor120MWelectricalload.Thesuggestionsare:Controlthequantityofmixedburninginfe
6、riorcoa1.AppropriatetomixedburninglignitetOhedge,whichcanspecificallyreducetheimpactofriskaftermixedburninginferiorcoa1.TrytOrunhighlevelcoalpulveriz—er,andthroughadjustofburnerangularandspecificbaffletOraisetheoutlettemperatureofre-heater;Corn—prehensiveconsideroftheproportionofmixedburningin
7、feriorcoa1.Keywords:Mixedburninginferiorcoal;Coalconsumptionrateofpowersupply;Quantitativeanalysis燃煤电厂运行中的主要成本之一是燃料。为质煤对供电煤耗影响的试验。了降低煤炭成本,大多燃煤电厂都在掺烧劣质煤,1试验方案吴泾热电厂也不例外。掺烧大混煤的比例在2o~3O。由于劣质煤价低,煤炭成本有所降1)机组简况12号燃煤机组的锅炉系上海低,但是过热器、再热器、制粉系统等设备受
此文档下载收益归作者所有