秸秆沼气发酵的能效限度分析  

Efficiency limitation analysis on straw methane fermentation

作　　者：李晓华[1] 李扬洋[2] 张燕生[2] 董仁杰[2] 

机构地区：[1]中国环境管理干部学院,河北秦皇岛066000 [2]中国农业大学,北京100083

出　　处：《可再生能源》2011年第5期57-62,共6页Renewable Energy Resources

基　　金：国家科技支撑计划(2008BADC4B062008BADC4B17)

摘　　要：能源利用技术的能源转换效率是其技术评价的重要基础。秸秆沼气发酵技术一方面受到高度关注与国家政策支持,另一方面其能源转换效率研究却几乎为零。文章提出一种体现厌氧生化过程细菌能量学成果的能效分析方法,对秸秆沼气发酵进行了能效分析。通过典型秸秆主要组分厌氧降解率和厌氧过程细菌能量学分析,得出现有秸秆沼气发酵技术的最大能源转换效率低于25%的结论。The energy conversion efficiency is a principal reference for the technical assessment and application strategy of one energy technology. The technology of straw-to-biogas has get great attention and the government support; On the other hand, there is few studies on its energy conversion efficiency. Based on the bacteria-level energetic flux analyses in the anaerobic process, a new energy conversion efficiency method has been proposed in this pater. The straw-to-biogas energy efficiency is analyzed. According to the current anaerobic degradation rates of main components in a typical straw, it is concluded that the maximum energy conversion efficiency of straw-to-biogas is less than 25% by the existing technologies.

关 键 词：沼气发酵 能源转化效率 秸秆 细菌能量代谢 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.4[农业科学—农业机械化工程]