简介:摘要本文通过对低负荷阶段锅炉燃烧稳定性分析,结合国电榆次热电有限公司锅炉现状,针对运行人员调整方式,研究稳定燃烧的相关措施,有效指导运行人员正确稳当操作,达到低负荷阶段锅炉稳定经济运行的目的。
简介:Athree-dimensionalglobalchemistrytransportmodel(OSLOCTM2)isusedtoinvestigatetheimpactofsubsonicaircraftNOxemissiononNOzandozoneoverChinaintermsofayear2000scenarioofsubsonicaircraftNOxemission.TheresultsshowthatsubsonicaircraftNOxemissionsignificantlyaffectsnorthernChina,whichmakesNOxat250hPaincreasebyabout50pptvwiththehighestpercentageof60%inJanuary,andleadingtoanozoneincreaseof8ppbvwith5%relativechangeinApril.TheNOxincreaseismainlyattributedtothetransportprocess,butozoneincreaseisproducedbythechemicalprocess.TheNOxincreasesbylessthan10pptvbyvirtueofsubsonicaircraftNOxemissionoverChina,andozonechangeslessthan0.4ppbv.WhensubsonicaircraftNOxemissionoverChinaisdoubled,itsinfluenceisstillrelativelysmall.
简介:摘要某厂2×330MW亚临界机组低氮燃烧器改造完毕投入运行后发现存在飞灰含碳量和大渣含碳量偏高的问题,通过分析发现锅炉最下排DRB-4Z型燃烧器一次风速过高、刚性太强导致燃烧不稳。通过对#1炉DRB-4Z型燃烧器优化及改造,取得了良好效果。