异形分离循环流化床锅炉的技术改造分析

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关键词：循环流化床锅炉；异形分离器；技术改造；床温；分级燃烧

中图分类号：TK229.66；X701 文献标识码：A 文章编号：1008-9500(2025)07-0221-04

DOI: 10.3969/j.issn.1008-9500.2025.07.064

Technical Transformation Analysis of Special-Shaped Separation Circulating Fluidized Bed Boiler

ZHAO Hongyan (Henan Shenma Nylon Chemical Co.,Ltd.,Pingdingshan4670o0,China)

Abstract:The rated evaporation capacity of a certain circulating fluidized bed boiler is 130t/h ,but the separation eficiencyoftheirregularseparatorislow,thebedtemperatureishigh,theloadcapacityisporndtheoriginalemission concentrationof nitrogenoxides(NO）ishigh.Inresponsetothecurrntproblems,theboilerhasundergoneasystematic renovation,including improvingtheeficiencyoftheseparator,increasing theheatingsurfaceinsidethefurnace,addinga fluegasrecirculationsystem,optimizingthearangementofsecondaryair,retrofitingtheeconomizer,andaddingcatalyst layout space.After the boiler renovation,the bed temperature decreased from 990 to 950 ΔC ,the load capacity of the boiler increased from 110t/h to 125t/h ,the exhaust temperature of the boiler decreased from 170‰ to 165 C ,theNO x （204号 emission concentration decreased from 550mg/Nm3 to 50mg/Nm3 ,and the ammonia escape concentration decreased from 9.5mg/Nm3 to 3.9mg/Nm3 ,and the renovation achieved the expected results.

Keywords:circulating fluidizedbedboiler;special-shapedseparator;technical transformation;bed temperature;staged combustion

某循环流化床锅炉额定蒸发量为 130t/h ，采用异形分离器，整体成Ⅱ型布置，为框架结构，分离器前墙借用炉膛后墙，锅炉炉膛出口设置在炉膛中心线。（剩余6532字）