摘要
苏晋朔州电厂循环流化床锅炉所需合格的燃煤(0~8 mm)原设计由附近选煤厂筛分破碎后直接提供,自公司2×660 MW机组投产后,因配套选煤厂供电厂煤量不足且其燃煤粒径超标,同时电厂从周边露天矿协调调入汽运煤,汽运煤颗粒度更是超标严重,造成锅炉频繁结焦、下渣口堵塞等问题,严重时造成停机事故。为严格控制入炉煤粒径,提高设备运行稳定性和经济性,针对燃煤粒径超标问题,电厂提出在厂内增加筛分破碎设施,由于电厂设计阶段未做预留,没有合适的场地可供筛分破碎系统建设。专家组经过对生产厂区进行踏勘,提出2种较为可行的方案,经分析论证,最终选择在1号转运站处向地下深挖并采用大倾角皮带等方式建造紧凑型筛分破碎楼的创新方案,有效解决了建造空间不足的问题,改善了入炉煤的颗粒度,为同类型电厂新增破碎设施改造工作提供参考和依据。
The company required qualified coal-fired circulating fluidized bed boiler(0 to 8 mm)in the original design provided directly by the nearby coal preparation plant after screening and crushing,since the commissioning of the company′s 2×660 MW unit,due to insufficient coal production and excessive coal particle size in the power supply plant of the supporting coal preparation plant,at the same time,the power plant coordinated the transfer of coal transported by steam from the surrounding open-pit mines,and the particle size of coal transported by steam exceeded the standard severely,causing frequent coking of the boiler,blockage of the slag outlet,and in severe cases,shutdown accidents.To strictly control the particle size of coal entering the furnace,improve the stability and economy of equipment operation,in view of the problem of coal particle size exceeding the standard,the power plant proposed to add screening and crushing facilities in the plant,due to no reservation made during the power plant design phase,there was no suitable site for the construction of screening and crushing system.The expert group conducted a survey of the production plant area and proposed two feasible solutions in the article.After analysis and demonstration,an innovative solution was ultimately chosen to dig deep underground at transfer station 1 and constructed a compact screening and crushing building using methods such as large inclination belts,which effectively solved the problem of insufficient construction space and improved the particle size of coal entering the furnace.It provides reference and basis for the reconstruction of new crushing facilities in the same type power plants.
作者
谢卫国
尉君
Xie Weiguo;Wei Jun(Sujin Shuozhou Gangue Power Generation Co.,Ltd.,Shuozhou 036000,China)
出处
《能源与环保》
2024年第1期235-239,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
苏晋朔州煤矸石发电有限公司新增筛分破碎系统可行性研究报告(K2250)。
关键词
CFB锅炉
颗粒度
大倾角胶带
筛分破碎系统
CFB boiler
particle size
high dip belt
screening and crushing system
作者简介
谢卫国(1982-),男,山西运城人,高级工程师,现从事大型火力发电厂生产管理工作;通讯作者:尉君(1986-),男,山西朔州人,高级工程师,硕士,现从事循环流化床锅炉机组运行维护工作。
