超临界600 MW CFB锅炉煤泥掺烧试验  

Experimental study on coal slime co-firing in a supercritical 600 MW CFB boiler

作　　者：卢荣椿 茹宇 黎吉云 赵鹏勃[2] 高洪培[2] 孙献斌[2] 王海涛[2] LU Rongchun;RU Yu;LI Jiyun;ZHAO Pengbo;GAO Hongpei;SUN Xianbin;WANG Haitao(Shenhua Fujian Energy Co.,Ltd.,Fuzhou 350014,China;State Key Laboratory of Coal Based Clean Energy,China Huaneng Clean Energy Research Institute Co.,Ltd.,Beijing 102209,China;Jingyi Chemical of Shaanxi,Yulin 719000,China)

机构地区：[1]神华(福建)能源有限责任公司,福建福州350014 [2]中国华能集团清洁能源技术研究院有限公司,煤基清洁能源国家重点实验室,北京102209 [3]陕西精益化工有限公司,陕西榆林719000

出　　处：《热力发电》2020年第5期140-145,共6页Thermal Power Generation

基　　金：中国华能集团有限公司总部科技项目(HNKJ18-H13)。

摘　　要：基于超临界600 MW机组循环流化床(CFB)锅炉,在1 MW机组CFB燃烧试验台上进行了煤泥掺烧试验,就大比例掺烧煤泥对锅炉性能及污染物排放的影响进行了研究。试验结果表明:煤泥掺烧比例最高可达到70%,此掺烧比例下燃烧稳定;飞灰份额随煤泥掺烧比例提高而提高,掺烧比例为35%、55%和70%条件下,飞灰份额分别为77.84%、82.32%和83.78%;大比例掺烧煤泥后炉内循环物料量减少,不利于整个炉膛保持上下均匀的温度场分布;掺烧煤泥后的燃烧效率在99.29%~99.41%之间,掺烧煤泥比例并不会明显影响燃烧效率;掺烧煤泥对于煤的结焦特性无明显影响;煤泥掺烧比例的提高导致SO2排放质量浓度先降后升,而NOx排放逐渐降低。Based on a supercritical 600 MW CFB unit,the effects of blending coal slime with large proportion on boiler performance and pollutant emission were studied in a 1 MW CFB combustion test-bed.The test results show that,the blending ratio of the coal slime could reach up to 70%,and the co-combustion was stable at this ratio.The proportion of fly ash increased with the coal slime’s blending ratio,it was 77.84%,82.32%and 83.78%respectively when the blending ratio was 35%,55%and 70%.The large proportion of slime could reduce the amount of circulating materials in the furnace,which was not conducive to the uniform temperature distribution in the whole furnace.The combustion efficiency was 99.29%~99.41%,and the blending ratio of slime did not affect the combustion efficiency obviously.Blending slime had no obvious influence on the slagging characteristics of coal.When increasing the blending ratio of coal slime,the SO2 emission decreased at first and then increased,while the NOx emission gradually decreased.

关 键 词：循环流化床锅炉 煤泥 掺烧 成灰 燃烧效率 结焦 污染物 

分 类 号：TQ534[化学工程—煤化学工程] TK12[动力工程及工程热物理—工程热物理]