300MW循环流化床锅炉燃烧调整  

Combustion adjustment of 300 MW circulating fluidized bed boiler

作　　者：武生 张志强 李志斌 王小伟 刘曼 WU Sheng;ZHANG Zhiqiang;LI Zhibing;WANG Xiaowei;LIU Man(China energy science and technology research institute Co.,Ltd,NanJIing 210000,China;Shanxi Institute of Coal Chemistry Chinese Academy of Sciences,TaiYuan 030000,China)

机构地区：[1]国家能源集团科学技术研究院有限公司,江苏南京210000 [2]中国科学院山西煤炭化学研究所,山西太原030000

出　　处：《洁净煤技术》2024年第S01期320-324,共5页Clean Coal Technology

基　　金：国家自然科学基金项目(51508281);国家重点研发项目(2020YFB0606302)

摘　　要：针对某电厂300 MW机组流化床锅炉运行中出现的床温偏差大,飞灰、大渣可燃物含量高,辅机耗电率高等问题,从燃料粒径、运行氧量、一次风量、二次风配风方式、运行床压等方面进行燃烧优化调整试验。结果表明:影响床温偏差的主要为燃料粒径,运行氧量、风室压力,上下二次风配比等对锅炉飞灰、大渣可燃物含量影响显著。建议运行中,300 MW负荷下表盘运行氧量维持2.95%左右,上下二次风门开度采用70%/70%/100%/100%的正塔配风方式,风室压力保持在12.5 kPa左右。研究结果可为同类型机组优化运行提供指导。In response to the problems of large bed temperature deviation,high combustible content of fly ash and large slag,and high power consumption of auxiliary equipment during the operation of a 300 MW fluidized bed boiler in a power plant,combustion optimization adjustment tests were conducted from the aspects of fuel particle size,operating oxygen content,primary air volume,secondary air distribution method,and operating bed pressure.The experimental results show that the main factors affecting the bed temperature deviation are fuel particle size,operating oxygen content,air chamber pressure,and the ratio of upper and lower secondary air,which have a significant impact on the combustible content of boiler fly ash and large slag.It is recommended to maintain an oxygen content of around 2.95%on the dial during operation under a load of 300 MW,and to use a 70%/70%/100%/100%positive tower air distribution method for the opening of the upper and lower secondary air valves.The air chamber pressure should be operated at around 12.5 kPa.The research results can provide guidance for optimizing the operation of similar units.

关 键 词：流化床锅炉 燃烧调整 燃料粒径 运行氧量 二次风配风 风室压力 

分 类 号：TM621.2[电气工程—电力系统及自动化]