900MW超临界塔式锅炉的技术特点

　第26卷第1期　2006年2月

动　力　工　程

JournalofPowerEngineering

Vol.26No.1　Feb.2006　

　　文章编号:100026761(2006)012015207

900MW超临界塔式锅炉的技术特点

冯伟忠

(上海外高桥第三发电有限责任公司,上海200137)

摘　要:介绍了外高桥电厂二期900MW超临界塔式锅炉的基本情况。锅炉采用水平布置的对流受热面及螺旋水冷壁,能减少水冷壁的面积且受热均匀,可进行过热器及再热器的酸洗甚至取消冲

管,有利于解决固体颗粒侵蚀(SPE)问题,安全裕度,)和对流受热面比例的任意性,特别有利于高效超临界技术的发展,双一次风喷嘴和设置偏置风和燃尽风等技术,,在降低燃烧区域热负荷的同时,。图6参14关键词:;;螺旋水冷壁;燃烧器中图分类号:TK:A

A900MWSupercriticalTowerBoiler’sTechnicalCharacteristics

FENGWei2zhong

(ShanghaiWaigaoqiaoNo.3PowerGenerationCo.Ltd,Shanghai200137,China)

Abstract:ThemainnotablepointsoftheWaigaoqiaoPowerPlant’ssecondconstructionstage’s900MWsupercriticalboilerisbeingdescribed.Thehorizontallayoutoftheboiler’sconvectionheatingsurfaceandthespirallyshapedwaterwallreducestherequiredwaterwallareaandhelpstopromotethelatter’sheattransfer,makesacidcleaningofthesuperheaterandreheaterpossible,andsteamflushingmayevenbedispensedwith,isadvantageousforsolvingthesolidparticlkeerosionproblem,evenstheheattransferdistributionovertheconvectionheatdeliverysurface,withahigherheatutilizationcoefficientandalargermarginofsafetyofthematerial.Theerosionrateoftheconvectionheatdeliverysurfaceislower,aswellastheflowresistanceoftheairfeedingandfluegassystem.Especiallynolimitissettotheratioofradiationtoconvectionheatdeliverysurface,whsichisadvantageoustothefurtherdevelopmentofhighefficientsupercriticaltechnology.Theboiler’sgrouparrangedburners,thedualprimaryairnozzles,thesegregateddenseandsparsezone,theapportionmentofoffsetairandburnoutair,allhelptolowerthetemperatureatthecenterofcombustionandtheformationofNOX,aswellas,simultaneouslywithloweringthethermalloadinthecombustisonzone,raisesthemeantermalloadoftheradiationheatdeliverysurfaceandlower,theriskofcokingofthewaterwallandthefurnace’soutlet.Figs6andrefs14.

Keywords:powerandmechanicalengineering;supercriticalparameters;towertypeboiler;spiralshapedwaterwall;burner

　　外高桥电厂二期2×900MW工程,利用世界银

收稿日期:2004205210　　修订日期:2004207231

作者简介:冯伟忠(19542),高级工程师。上海外高桥第三发电有限责任公司副总经理。从事电厂基建工程及生产技术管理。

行贷款,采用国际竞争性公开招标方式进行设备岛采购。整个电厂分为汽轮发电机岛、锅炉岛、仪控岛、GIS岛、出灰岛等。其中汽轮发电机岛、仪控岛分别由德国SIEMENS和日本日立公司中标。而在

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库900MW超临界塔式锅炉的技术特点在线全文阅读。