可调卫燃带对燃煤锅炉热力特性的影响  

Effect of movable heat-insulate layer on thermal performances of coal fired boiler

作　　者：陈冬林[1] 刘亮[1] 郑楚光[2] 

机构地区：[1]长沙电力学院动力工程系,湖南长沙410077 [2]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《华北电力大学学报（自然科学版）》2002年第2期54-58,共5页Journal of North China Electric Power University：Natural Science Edition

摘　　要：介绍了可调卫燃带的概念与工作原理，并采用校核热力计算的方法，详细研究了煤种、负荷变化时可调卫燃带对炉膛吸热量、汽温、炉膛平均烟温、炉膛出日烟温、主要受热面进出日烟温等参数的影响。计算表明：可调卫燃带可使锅炉在更宽广的负荷范围内维持额定汽温：可提高低负荷时的热空气温度，可作为改善锅炉热力特性的一种有效调节手段。The concept and working mechanism of adjustable heat-insulate layer is introduced briefly. The standard heat transfer calculation code is used to investigate the effect of the adjustable heat-insulate layer on heat absorption in furnace, steam temperature, flue gas temperature at inlet and outlet of each section of heat surface, preheated air temperature and so on.The calculated results show that the adjustable heat-insulate layer can greatly improve the overall performances and therefore it can be used as an effective means to regulate the thermal characteristics of boiler.

关 键 词：可调卫燃带 燃煤锅炉 热力特性 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]