多种生物质与煤掺混燃烧特性研究  

Study on co-combustion characteristics of biomass mixed with coal

作　　者：马辉 汪潮洋 韩辉 杨先亮[3] 秦志明 雷鸣[3] 张磊[3] 贾永会 MA Hui;WANG Chaoyang;HAN Hui;YANG Xianliang;QIN Zhiming;LEI Ming;ZHANG Lei;JIA Yonghui(State Grid Hebei Energy Technology Service Co.,Ltd.,Shijiazhuang 050000,China;Electric Power Research Institute of State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;School of Energy,Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,China)

机构地区：[1]国网河北能源技术服务有限公司,河北石家庄050000 [2]国网河北省电力有限公司电力科学研究院,河北石家庄050000 [3]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《热力发电》2022年第1期167-172,共6页Thermal Power Generation

基　　金：国家电网有限公司科技项目(SGTYHT/20-JS-221)。

摘　　要：采用热重分析法研究了煤和污泥、秸秆、药渣3种生物质掺烧时的燃烧特性。结果表明:煤在燃烧过程中仅有1个明显的失重峰,为挥发分和焦炭同时燃烧形成;而污泥、秸秆和药渣均有3个明显的失重峰,其中第1个峰是水分析出引起,第2个峰为挥发分的析出与燃烧阶段,第3个峰为固定碳的燃烧阶段;秸秆挥发分和固定碳燃烧对应的失重峰相邻较近,而污泥和药渣对应的2个失重峰相距较远,因此秸秆的挥发分和固定碳在燃烧过程中的相互作用更强一些,而污泥和药渣的挥发分和固定碳的相互作用较弱;煤与各生物质掺烧时,秸秆的掺混改善了煤的着火性能和综合燃烧特性,而污泥燃烧特性较差,掺混比例超过20%不利于混合物的着火与燃烧,药渣的掺混使混合物的燃烧和着火性能降低。Thermogravimetric analysis method was employed to analyze the co-combustion characteristics of coal mixed with sludge,straw and mycelial residue.The results showed that,coal had only one obvious weight loss peak during the combustion process,which was formed by the simultaneous combustion of volatile matters and coke.While sludge,straw and mycelial residue all had three obvious weight loss peaks during the combustion.The first peak was caused by water evaporation,the second peak was caused by the precipitation and combustion of volatiles,and the third peak was the combustion of fixed carbon.The weight loss peaks corresponding to straw volatile matters and fixed carbon burning were close to each other,while the two weight loss peaks corresponding to sludge and chemical residue were far apart.Therefore,the interaction between the volatile matters and fixed carbon of straw was stronger during the combustion process,while that between the volatile matters and fixed carbon of sludge and slag was weaker.When coal was mixed with biomass,the blending of straw improved the ignition performance and the comprehensive combustion characteristics of coal.Because the sludge had poor combustion characteristics,when its mixing ratio reached higher than 20%,it was not conducive to the ignition and combustion of the mixture.The blending of mycelial residue reduced the combustion and ignition performance of the mixture.

关 键 词：煤 生物质 掺混燃烧 热重分析 燃烧特性 

分 类 号：TK6[动力工程及工程热物理—生物能]