平面流分离循环流化床锅炉改造及其运行  

Retrofitting of a planar separator circulating fluidized bed boiler

作　　者：吕俊复[1] 张建胜[1] 刘青[1] 岳光溪[1] 黄兴华[2] 刘国华 陈志[2] 徐洪亮 

机构地区：[1]清华大学热能工程系,北京100084 [2]四川锅炉厂设计一处,成都610401

出　　处：《清华大学学报（自然科学版）》2003年第6期775-778,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"十五"规划科技攻关项目(200113A401A03);国家重点基础研究发展规划项目(G1999022204)

摘　　要：出力不够是20世纪90年代初投运的第一代中国产循环流化床锅炉的主要问题。为改善75t/h平面流分离循环床锅炉的性能,在原分离器的位置空间采用入口带有加速段的方型分离器代替平面流分离器,适当调整受热面,保留现有炉型和钢构架。改造后的运行实践证明,锅炉出力可以稳定达到额定值,物料循环系统工作正常,主循环回路温度分布合理,改造是成功的。A significant problem in first generation circulating fluidized bed (CFB) boilers in China in the early 1990s was that they could not be easily operated at design load because the collection efficiency of separators such as the planar flow separator was quite poor. The performance of a 75 t/h planar flow separator in a circulating fluidized bed (CFB) boiler was improved by replacing the planar flow separator with a watercooled square cyclone with a particle accelerating inlet. The heating surface was also adjusted to ensure the best performance, while the overall configuration and supporting frame were not changed. Subsequent operating experience showed that the retrofitted CFB boiler could operate at design load with a reasonable temperature distribution in the main circulating loop. Thus, such retrofitting of CFB boilers is an effective means of improving boiler performance.

关 键 词：平面流分离循环流化床锅炉 技术改造 运行特征 分离器 受热面 主循环回路 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]