景德镇475t／h循环流化床锅炉过热屏超温原因分析及改进措施  

Cause Analysis and Improvement Measure for Superheated Panel Overheating of 475 t/h Circulating Fluidized Bed Boiler in Jingdezhen Power Plant

作　　者：肖峰[1] 陈发林 王冬福[1] 邵国桢[1] 杨剑平 高子瑜[1] 

机构地区：[1]上海锅炉厂有限公司,上海200245 [2]景德镇发电厂,景德镇333000

出　　处：《动力工程》2008年第6期847-849,共3页Power Engineering

摘　　要：根据锅炉运行数据,对景德镇475 t/h循环流化床锅炉在启动过程中屏式过热器超温的原因进行了分析,得出其超温的原因主要是:①炉膛水冷壁的传热特性差;②锅炉运行参数严重偏离设计参数;③锅炉转向室的吸热比设计值高.同时,提出将部分过热屏改造成水冷屏的改进措施,经实际运行表明:改造后低温屏的温度有所降低,该方案基本上达到了预期效果.The causes of panel superheater overheating during the start-up of the 475 t/h circulating fluidized bed boiler in Jingdezhen Power Plant are analyzed according to the operational data. It is concluded that the principal causes of overheating are bad heat-transfer performance of furnace water-wall, deviation of operational parameters from design parameters as well as high heat-absorbing amount of boiler reversing chamber compared with the design value. Meanwhile the retrofit countermeasure is presented, which replaces part of the superheated panels by water-cooled panels. The practical operation shows that the temperature of low temperature panel decreases after retrofit, which indicate that the desired result is achieved.

关 键 词：能源与动力工程 循环流化床 过热屏 超温 水循环 

分 类 号：TK223.32[动力工程及工程热物理—动力机械及工程]