生物质混煤冷热电联产系统能效分析  

Energy efficiency analysis of cold,heat and power cogeneration system based on biomass blended coal combustion

作　　者：包哲 王旭 吴楠楠 李薇 BAO Zhe;WANG Xu;WU Nannan;LI Wei(College of Environmental Science and Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学环境科学与工程学院,北京102206

出　　处：《热力发电》2020年第3期31-37,共7页Thermal Power Generation

摘　　要：对以生物质混煤为燃料的冷热电三联产系统,综合考虑其节能性、经济性和环保性等多种影响因素,建立多目标评价体系进行系统能效分析;并从能值角度出发,对不同的能值指标进行分析,探究混掺生物质对冷热电联产系统的影响,以确定生物质的最佳混掺比例。结果表明:在相同的负荷条件下,以生物质混煤为燃料的冷热电联产系统不仅可以节约系统的运行成本,SOx、NOx、CO2减排潜力较大,兼具良好的环境效益和经济效益;在10%、15%、20%3个混掺比例当中,生物质混掺比为20%时的生物质混煤冷热电联产系统能值产出率最大,环境效益最高,经济性和环保性都有比较好的发展前景。For the cogeneration system of biomass co-firing coal as fuel,comprehensively considering various influencing factors of energy conservation,economy and environmental protection,a multi-objective evaluation system is established,and energy efficiency analysis is conducted for the system.From the energy value point of view,the different energy value indicators are analyzed to explore the influence of mixed biomass on the cogeneration system,thus to determine the optimal blending ratio of biomass.The results show that,under the same load conditions,the cogeneration system using biomass-mixed coal as fuel can not only save the operating cost of the system,but also has great potential in reducing emissions of SOx,NOx,CO2 and other gases.Moreover,it also has good environmental and economic benefits.From the energy value point of view,among the three blending ratios(10%,15%,and 20%),20%is the best blending ratio,which has the highest yield and environmental benefit,and the economy and environmental prospects is better.

关 键 词：混煤燃烧 冷热电三联产 多目标分析 能值分析 混掺比 

分 类 号：TK6[动力工程及工程热物理—生物能]