某2030 t/h超临界锅炉再热汽温偏低原因分析及改造措施  

Cause Analysis and Modification Measures for Low Reheat Steam Temperature in 2030 t/h Supercritical Boiler

作　　者：王兴 齐保新 马庆中 石红晖 WANG Xing;QI Bao-xin;MA Qing-zhong(GuoDian Science and Technology Research Institute;Huozhou Power Plant,Guodian North China Electric Power Co,Ltd.)

机构地区：[1]国电科学技术研究院有限公司,江苏南京210023 [2]国电华北电力有限公司霍州发电厂

出　　处：《电站系统工程》2020年第4期47-49,51,共4页Power System Engineering

基　　金：国家能源集团2018年度科技创新项目(GJNY-18-01)资助。

摘　　要：对某锅炉再热汽温偏低、低再受热面磨损严重进行分析,得出实际燃用煤质偏离设计煤质大、屏式过热器吸热比例大是造成再热汽温偏低的重要因素,通过减少屏式过热器换热面积,重新分配各受热面吸热比例,取得了预期的改造效果。The low reheat steam temperature and serious wear on low-temperature reheater pipes of a boiler is analyzed.It is concluded that the serious deviation designing coal quality and the large heat absorption ratio of platen superheater are the important factors that cause the low reheated steam temperature.By reducing the heat exchange area of the platen superheater and redistributing the heat absorption fraction of each heat receiving surface,obtained the expected effect.

关 键 词：再热汽温 磨损 屏式过热器 改造 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程]