简介:摘要:本文深入探讨了1000MW超超临界锅炉低NOx燃烧与控制技术,分析了NOx的生成机理及其影响因素,并结合实际案例提出了多种降低NOx排放的技术措施。通过优化燃烧技术和加装脱硝装置,实现了NOx排放量的显著减少,对提升火电厂环保效益具有重要意义。本文不仅为同类型锅炉的NOx控制提供了技术参考,也为应对日益严格的环境保护标准提供了解决方案。
简介:Athree-dimensionalglobalchemistrytransportmodel(OSLOCTM2)isusedtoinvestigatetheimpactofsubsonicaircraftNOxemissiononNOzandozoneoverChinaintermsofayear2000scenarioofsubsonicaircraftNOxemission.TheresultsshowthatsubsonicaircraftNOxemissionsignificantlyaffectsnorthernChina,whichmakesNOxat250hPaincreasebyabout50pptvwiththehighestpercentageof60%inJanuary,andleadingtoanozoneincreaseof8ppbvwith5%relativechangeinApril.TheNOxincreaseismainlyattributedtothetransportprocess,butozoneincreaseisproducedbythechemicalprocess.TheNOxincreasesbylessthan10pptvbyvirtueofsubsonicaircraftNOxemissionoverChina,andozonechangeslessthan0.4ppbv.WhensubsonicaircraftNOxemissionoverChinaisdoubled,itsinfluenceisstillrelativelysmall.