12 MW生物质直燃发电系统能耗和温室气体排放分析  

Life cycle analysis of energy consumption and greenhouse gas emissions of a 12 MW biomass power plant

作　　者：党乐 佟敏 崔亚茹 刘华财[2] 邱泽晶 胡文博 Dang Le;Tong Min;Cui Yaru;Liu Huacai;Qiu Zejing;Hu Wenbo(State Grid East Inner Mongolia Electric Power Research Institute,Huhhot 010020,China;Guangzhou Institute of Energy Conversion,Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,China;State Grid Electric Power Research Institute,Nanjing 210000,China;State Grid Electric Power Research Institute Wuhan Efficiency Evaluation Co.Ltd.,Wuhan 430074,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,内蒙古呼和浩特010020 [2]中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广东广州510640 [3]国网电力科学研究院有限公司,江苏南京210000 [4]国网电力科学研究院武汉能效测评有限公司,湖北武汉430074

出　　处：《可再生能源》2022年第5期586-592,共7页Renewable Energy Resources

基　　金：国家电网公司科技项目(5400-202031205A-0-0-00)。

摘　　要：文章利用混合生命周期评估方法对12 MW生物质发电系统的能耗和温室气体(GHG)排放进行了分析,结果表明:系统全生命周期不可再生一次能源消耗为1.57 MJ/(kW·h),N肥生产占比最大,其次是收储运燃油消耗;系统全生命周期GHG排放为223.91 g/(kW·h)(以CO_(2)当量计),N肥生产和施用造成的排放占比最大,其次是生物质在电厂锅炉的燃烧。电厂建造的能耗和GHG排放分别占系统总额的17.6%和14.1%,农业机械、种子和农膜的能耗和GHG排放之和分别占系统总额的5.7%和6.3%。与传统煤电相比,12 MW生物质直燃发电项目每年可节约一次化石能源折合标煤2.3万t,减少GHG排放4.8万t。生物质发电具有良好的可持续性,在节能减排中能够发挥重要作用。Aiming at evaluating the sustainability of biomass power generation in China,a hybrid life cycle assessment method was used to quantify energy consumption and GHG emissions over the entire life cycle of a 12 MW biomass power plant,combining process analysis with economic input-output analysis.The results show that the life-cycle energy consumption is 1.57 MJ/(kW·h),mainly contributed by N fertilizer and diesel consumption during corn stove supply.The life-cycle GHG emissions is 223.91 g CO_(2)eq/(kW·h),mainly contributed by manufacture and application of N fertilizer and biomass combustion in power plant.The plant construction account for 17.6%of the total energy consumption and 14.1%of the total GHG emissions,while the energy consumption and GHG emission caused by agricultural machinery,seed and agricultural film amount to 5.7%and 6.3%of the total.By substituting traditional coal power,the 12 MW biomass power plant can save 23000 ton tce of fossil energy and reduce GHG emissions by 48000 t CO_(2)eq.The results indicate that biomass power may play a positive role in alleviating fossil-fuel related problems.

关 键 词：生物质 直燃发电 生命周期 能耗 温室气体 

分 类 号：TK6[动力工程及工程热物理—生物能]