热力发电2025，Vol.54Issue(4)：51-60,10.DOI:10.19666/j.rlfd.202408183
煤与生物质混燃锅炉结渣评价指标分析
Analysis on evaluation indicators of slagging in boilers co-firing coal with biomass
摘要
Abstract
The power generation by co-firing of coal and biomass is the most economical and efficient technology for existing coal-fired power plants to achieve CO2 emission reduction and large-scale efficient utilization of biomass.However,due to the significant alkali metal content in biomass,serious issues such as ash deposits,slagging,and corrosion arise during co-firing of coal and biomass,posing substantial threats to safe and economically viable operation of boiler equipment.Comparative analysis on slagging characteristics of heating surfaces in coal-fired boilers,biomass-fired boilers,and co-firing boilers of coal and biomass are conducted,with their influencing factors investigated.The slagging characteristic evaluating indicators for boilers firing different fuels and co-firing boilers are comprehensively discussed and evaluated.Furthermore,the applicability of these slagging evaluation indicators in specific boiler equipment is assessed.A comprehensive analysis reveals that the ash components in the fuel determine the physical and chemical properties of ash residues.The ash fusion characteristics reflect the tendency and temperature of solid-liquid transformation of ash residues,whereas ash viscosity relates to ash flowability and its propensity to deposit as slag on heating surfaces.A comprehensive consideration of these aspects enables a more accurate evaluation of boiler heating surface slagging characteristics.关键词
生物质/碱金属/结渣评价指标/灰熔融特性/黏度Key words
biomass/alkali metal/slagging evaluating indicator/ash fusion characteristics/viscosity引用本文复制引用
梁波,王永征,梁艳杰,刘济森,牛胜利,韩奎华..煤与生物质混燃锅炉结渣评价指标分析[J].热力发电,2025,54(4):51-60,10.基金项目
国家重点研发计划项目(2022YFB4202002) National Key Research and Development Program(2022YFB4202002) （2022YFB4202002）
