某油页岩电站CFB锅炉流渣原因分析及应对措施  

Cause Analysis and Solution for Slag Spray in CFB Boiler of an Oil Shale Power Station

作　　者：何文锋 白锋 雷宇 张保 HE Wenfeng;BAI Feng;LEI Yu;ZHANG Bao(South China Electric Power Test and Research Institute Co.,Ltd.of China Energy Engineering Group,Guangzhou 510799,China)

机构地区：[1]中国能源建设集团华南电力试验研究院有限公司,广东广州510799

出　　处：《电力勘测设计》2023年第9期40-44,共5页Electric Power Survey & Design

摘　　要：某2×235 MW油页岩电站项目锅炉采用燃烧油页岩的循环流化床锅炉(CFB锅炉),油页岩中灰分占比达到60%以上,要求锅炉排渣系统能够稳定高效地运行。从冷渣器的结构和锅炉运行的角度,针对滚筒冷渣器流渣原因进行研究分析,总结流渣规律并确定流渣原因,最终对滚筒冷渣器的结构设计和运行逻辑等方面提出优化方案,并在入炉燃料粒径控制、锅炉运行方式等方面提出抑制冷渣器流渣的应对措施。通过采用一系列应对措施,滚筒冷渣器的流渣现象得到抑制;锅炉负荷调整过程中,滚筒冷渣器运行较为稳定。The 2×235 MW oil shale power station is equipped with an oil shale fired circulating fluidized bed(CFB)boiler,as the ash content in oil shale is more than 60%,the boiler slag discharge system is required to operate stably and efficiently.From the view of the structure of bottom ash cooler and the operation of boiler,this paper studies and analyzes on the causes of slag spray in rolling cylinder ash cooler,summarizes the rules of slag spray and determines the reasons for slag spray,and then put forward the optimization scheme for structure design and operation logic of the rolling cylinder ash cooler,and the solutions to restrain the slag spray of bottom ash cooler in the aspects of fuel particle size control and boiler operation mode.By adopting a series of optimization measures,the slag spray phenomenon of rolling cylinder ash cooler is restrained,and the operation of rolling cylinder ash cooler is relatively stable in the process of boiler load adjustment.

关 键 词：油页岩电站 循环流化床锅炉 流渣 灰分 滚筒冷渣器 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]