生物质气参数对燃煤耦合生物质发电机组影响研究  

Influence of biomass gas parameters on coupled coal-fired biomass generation

作　　者：王一坤[1,2] 邓磊 常根周[4] 柳宏刚 吕凯[1] 聂鑫[1] 张广才 WANG Yikun;DENG Lei;CHANG Genzhou;LIU Honggang;LYU Kai;NIE Xin;ZHANG Guangcai(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huaneng Yangtze Environmental Technology Co.,Ltd.,Beijing 100031,China;State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Hebei Hanfeng Power Generation Co.,Ltd.,Handan 056200,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能长江环保科技有限公司,北京100031 [3]西安交通大学动力工程多相流国家重点实验室,陕西西安710049 [4]河北邯峰发电有限责任公司,河北邯郸056200

出　　处：《热力发电》2021年第3期34-40,共7页Thermal Power Generation

基　　金：中国华能集团有限公司总部科技项目(HNKJ18-H09)。

摘　　要：为了掌握掺烧生物质气对燃煤耦合生物质发电燃煤机组运行参数的影响,针对某电厂300 MW等级燃煤机组,以能量守恒定律为基础,通过锅炉热力校核和机组热力系统计算分析了机组在BMCR、75%THA、50%THA和30%THA工况下,掺烧生物质气后燃煤机组的锅炉热效率、发电煤耗、烟气温度和烟气量等参数的变化。结果表明:掺烧生物质气会导致锅炉热效率下降,燃煤消耗量减少,理论燃烧温度降低,排烟温度升高和烟气量增大,变化幅度均随着生物质气掺烧量的增加而增大;建议掺烧生物质气的温度低于500℃,全负荷热量输入比小于20%。In order to study the influence of blending biomass gas on operation parameters of coal-fired boiler,thermal calculation for a 300 MW unit was carried out based on energy conservation equation.Under the load of BMCR,75%THA,50%THA and 30%THA,the influences of blending biomass gas on boiler parameters,such as boiler thermal efficiency,unit coal consumption,flue gas temperature,and gas flow,were investigated,via boiler thermodynamic calculation and unit thermal system analysis.The results show that,blending biomass gas will decrease the boiler efficiency,coal consumption and theoretical combustion temperature,and increase the exhaust gas temperature and quantity.The change will increase with the blending proportion of biomass gas.It suggests that the temperature of blended biomass gas be lower than 500℃,and the heat input ratio of full load be less than 20%.

关 键 词：生物质 生物质气 耦合发电 燃煤锅炉 煤耗 热效率 

分 类 号：TK6[动力工程及工程热物理—生物能] X705[环境科学与工程—环境工程]