300MW循环流化床锅炉机组冷渣器的能效分析  

Energy and Efficiency Analysis of Ash Cooling Equipment of 300 MW Circulating Fluidized Bed Unit

作　　者：李建锋[1] 吕俊复[2] 李斌[1,3] 

机构地区：[1]中国电力企业联合会科技开发服务中心,北京100038 [2]清华大学热科学与工程教育部重点实验室,北京100084 [3]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《燃烧科学与技术》2011年第4期355-362,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51061130536)

摘　　要：为了提高循环流化床锅炉机组热渣热能利用效率,建立了300 MW循环流化床锅炉机组所用两种冷渣器热效率与效率的计算模型并对其进行了性能计算分析.结果显示,两种冷渣器的热效率与效率差异很大,二者均热效率较高而效率较低.因此今后开发大容量、高效率的冷渣器对于大型循环流化床锅炉的节能具有重要作用.In order to improve the heat energy efficiency of hot slag, the thermal-efficiency and exergy-efficiency calculation models of two types of ash cooling equipment of a 300 MW circulating fluidized bed boiler were established and their performance was calculated. The results show that the two types of cooling equipment differ great in thermal-efficiency and exergy-efficiency, and that their thermal-efficiency is obviously higher than their exergyefficiency. So to develop ash cooling equipment with a large scale and a high efficiency is essential for energy-saving of a large-scale CFB boiler.

关 键 词：循环流化床 冷渣器 效率 热效率 

分 类 号：TK11[动力工程及工程热物理—热能工程]