基于LCA原理的国内典型沼气工程能效和经济评价

Energy efficiency and economic assessment based on life-cycle methodology for China's large-medium biogas project

我国养殖场大中型沼气工程正处于产业化前期发展阶段,及时总结经验、发现问题,优化筛选出几种适宜于在全国大范围推广的沼气工艺模式,成为目前亟待解决的问题。基于生命周期评价原理,结合国内7个具有典型代表性的养殖场沼气工程,对其全生命周期过程的能源消耗、经济效益提供定量的评价,为对比、评价各种工艺模式的优劣提供科学、权威的数据,填补这一方面国内研究的空白。评价结果表明,内蒙古蒙牛"热电联产工业化生产"模式、北京蟹岛度假村"前店后园农游结合型"模式、浙江义乌顺旺养殖场"猪—沼—草—猪"生态养殖模式等沼气工程模式具有较强的综合优势,适宜在国内进行大范围推广。

At present, large-medium scaled biogas project in China is at the early stage for large- scale demonstration, and it is urgently needed to summarize the experiences and the lessons as well as to select the optimized technology model for widely demonstrating in whole country. Based on the principle of life cycle assessment, this study analyzed the whole process＇s energy consumption, and economic benefits for china＇s 7 typical biogas pilots, and provided quantitative evaluation results. The results will provide scientific and authoritative information fog Comparing different technological model and will fill the gaps in the field of domestic research. Evaluation results show that 3 technological models including Xiedao biogas plant in Beijing, Shunwang pig plant in Yiwu, Zhejiang and Meiniu biogas generation project in Inner Mongolia have obvious comprehensive advantages.