耒阳电厂670t/h煤粉锅炉排烟温度偏高原因分析及改造设计  

Analysis on the Higher Flue Gas Temperature and Retrofit Design of Economizer of 670t/h Boiler in Leiyang Power Plant

作　　者：刘亮[1] 鄢晓忠[1] 符慧林[1] 夏侯国伟[1] 刘名兰[1] 汪衡荣 

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410077 [2]湖南耒阳电厂,湖南耒阳421800

出　　处：《锅炉技术》2005年第1期64-69,共6页Boiler Technology

基　　金：湖南省电力集团公司资助项目 (2 0 0 2 10 18)

摘　　要：通过对耒阳电厂 670t/h锅炉排烟温度偏高问题的分析 ,指出了造成排烟温度升高的主要原因。并就光管、鳍片和螺旋肋片管式省煤器 ,从传热方面、制造方面及投资方面进行了比较 ,经过热力计算及经济技术分析 ,提出了采用部分螺旋肋片管对省煤器进行改造的方案 ,并给出了设计计算的结果 ,计算表明 :该方案能降低锅炉排烟温度 ,提高锅炉效率 ,具有显著的节能效果。The main reasons of the higher flue gas temperature of 670 t/h boiler in Leiyang Power Plant were introduced in the paper. The performance of bare tube economiz er, finned-tube economizer and spiral-ribbed tube economizer were compared in the aspect of heat transfer, manufacture and investments. By analyzing the resul t of thermodynamic calculation, a new method to use spiral-ribbed tubes, which greatly reduce boiler flue gas temperature, improve the efficiency of boiler com bustion, with remarkable energy-saving benefit, was presented in the paper.

关 键 词：煤粉锅炉 排烟温度 螺旋肋片管省煤器 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]