330 MW循环流化床机组锅炉技术出力受限因素分析及处理  

Analysis and Treatment of Limited Output Factors For 330 MW Circulating Fluidized Bed Boiler

作　　者：荣俊 蔡斌[1] 韩义[1] 王研凯[1] 于英利[1] 王磊 RONG Jun;CAI Bin;HAN Yi;WANG Yankai;YU Yingli;WANG Lei(Inner Mongolia Power Research Institute,Hohhot 010020,China)

机构地区：[1]内蒙古电力科学研究院,呼和浩特010020

出　　处：《内蒙古电力技术》2020年第4期47-52,共6页Inner Mongolia Electric Power

基　　金：内蒙古电力(集团)有限责任公司自主科技项目“蒙西电网火电机组动态边界出力特性与裕量挖掘技术研究”(2019-25)。

摘　　要：针对330 MW循环流化床机组锅炉排烟温度高、布袋除尘器寿命短、负荷受限的问题,使用热力系统仿真技术,研究限制机组技术出力的主要因素,并提出解决措施。结果表明:对于该机组技术出力受限的问题,燃煤低位发热量和含水量有影响,起关键作用的是空预器传热性能;变煤种运行能够在一定程度上提高机组技术出力;采用内螺纹管空预器进行改造后,能够完全解决机组负荷受限问题,满负荷时排烟温度降低33.09℃,锅炉热效率提高1.7734%,燃煤年运行成本节约近1171.22万元,节能经济性显著。The thermal system simulation technology is used to solve the problem of high temperature of exhaust,short life of bag-filter and limited technical output of 330 MW circulating fluidized bed(CFB)thermal power unit boiler.The main factors of limited unit output is studied and the measures are presented.The results show that the decisive factor is the heat transfer performance of the air preheater for the problem of the limited technical output of the unit,and the low calorific value and moisture content of coal combustion have some impact on it.To some extent the use of coal variable-type operation can improve the technical output of the unit.The problem of limited load of the unit can be completely solved after the transformation of the internal thread tube air preheater.The temperature of exhaust gas reduces by 33.09℃,the thermal efficiency of boiler increases by 1.7734%at full load,and the annual operation cost of coal is saved nearly 11.7122 million yuan.The energy-saving economy is significant.

关 键 词：330 MW循环流化床锅炉 技术出力 排烟温度 锅炉热效率 热力系统仿真 

分 类 号：TM621.2[电气工程—电力系统及自动化]