热力发电2025，Vol.54Issue(3)：99-107,9.DOI:10.19666/j.rlfd.202406122
闭式中储制粉系统W型火焰锅炉掺烧烟煤技术研究
Co-firing bituminous coal in a W-shaped flame boiler with closed intermediate storage pulverization system
摘要
Abstract
The W-shaped flame boiler with closed middle storage pulverizing system is designed to burn low volatile lean coal and anthracite.Blending coal with high proportion of bituminous coal is able to improve the adaptability of fuel and the flexibility of the boiler.It is necessary to solve the technical problems such as explosion prevention of the pulverizing system,anti-burning of pulverized coal pipes and prevention of serious slagging in the furnace.Therefore,an inert explosion-proof pulverizing technology,in which low temperature flue gas is used for temperature adjustment,is proposed.This method solves the problem of explosion prevention of coal pulverizing system effectively.By increasing the capacity of cooling air from primary fan to reduce the temperature of hot primary air conveying pulverized coal and the adaptability of the burners to blended bituminous,the safety of the primary air pipes and the burners will be guaranteed.With the optimization of refractory belt arrangement and combustion adjustment,this method not only controls the slagging,but also improves the performance of combustion in the furnace effectively.By these integrated technologies presented above,the goal of co-firing 70%bituminous coal safely and economically in the W-shaped flame boiler with closed ball mill medium storage pulverizing system is achieved.关键词
W型火焰锅炉/闭式钢球磨煤机/中储式制粉系统/大比例掺烧烟煤/制粉系统防爆/煤粉锅炉Key words
W-shaped flame boiler/closed ball mill/intermediate storage pulverization system/co-firing blended bituminous coal with high proportion/explosion prevention of pulverization system/pulverized coal boiler引用本文复制引用
张勇,汪华剑,王洋,李超,唐荣富,解磊,兰小洪,兰永胜,左天祥..闭式中储制粉系统W型火焰锅炉掺烧烟煤技术研究[J].热力发电,2025,54(3):99-107,9.基金项目
国家重点研发计划项目(2020YFC1910000) （2020YFC1910000）
中国华能集团有限公司总部科技项目(HNKJ22-HF48) National Key Research and Development Program(2020YFC1910000) （HNKJ22-HF48）
Science and Technology Project of China Huaneng Group Co.,Ltd.(HNKJ22-HF48) （HNKJ22-HF48）
