330MW循环流化床锅炉的燃烧优化试验研究  

Experimental study on optimized combustion regulation of 330MW circulating fluidized bed boiler

作　　者：李楠[1,2] 赵鹏勃 施斌[3] 李昱喆 施起荣 钟毅[3] 高洪培 孙献斌 LI Nan;ZHAO Pengbo;SHI Bin;LI Yuzhe;SHI Qirong;ZHONG Yi;GAO Hongpei;SUN Xianbin(Huaneng Clean Energy Research Institute Co. ,Ltd. , Beijing 102209, China;State Key Laboratory of Coal Based Clean Energy, Beijing 102209, China;SP1C JIANGXI Electric Power Co. ,Ltd. FENY1 Power Plant,Fenyi 336607, China)

机构地区：[1]中国华能集团清洁能源技术研究院有限公司,北京102209 [2]煤基清洁能源国家重点实验室,北京102209 [3]国家电投集团江西电力有限公司分宜发电厂,江西分宜336607

出　　处：《洁净煤技术》2018年第3期85-90,共6页Clean Coal Technology

摘　　要：为解决某循环流化床锅炉效率低、分离器立管温度高、运行参数不合理等问题,在300 MW和250 MW负荷下,分别进行了变氧含量工况调整试验,在最佳氧含量的基础上,进行了变一次风率、变床压调整试验,优化了氧含量、一次风率、床压等关键参数。试验结果显示:300 MW负荷下,氧含量3.3%、一次风率38%、床压8.2 k Pa锅炉效率达到91.36%;250 MW负荷下,氧含量4.75%、一次风率40%、床压7.7 k Pa锅炉效率达到90.22%。通过增加立管润滑风系统、播煤风风源移位等技术改造措施解决了立管温度高、二次风裕量不足的问题。适当降低床压、一次风率运行,可以在节能降耗的同时提高锅炉效率,研究结果可应用于300 MW等级CFB锅炉的燃烧优化调整。A circulating fluidized bed（CFB） boiler had the problems of lower efficiency, higher temperature of standpipes and unreasonable running parameters. Under the load of 300 MW and 250 MW, experiment was conducted to optimize the oxygen, then optimize primary air rate and bed pressure in the best oxygen range respectively. The results show that, boiler efficiency reaches 91.56% under the load of 300 MW with the oxygen of 3.3% ,the primary air rate of 38% and the bed pressure of 8.2 kPa. The boiler efficiency achieves 90. 22% under the load of 250 MW with the oxygen of 4. 75% ,the primary air rate of 40% and the bed pressure of 7.7 kPa. A lubricating air system is suggested to build for the high temperature of standpipes, and the source of coal distributing air is suggested to be removed for the shortage of secondary air. The experimental results indicate that appropriate reduction of bed pressure and primary air rate can reduce energy consumption and in- crease boiler efficiency. The results can be applied to the optimal operation adjustment of 300 MW grade CFB boilers.

关 键 词：循环流化床锅炉 燃烧 氧含量 一次风率 床压 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程] TK16