Abstract: Biomethane has developed rapidly in western countries，such as Germany and Sweden，but it is still in its infancy in China though biomethane is an important renewable energy made from organic sources. At present，the bottleneck limiting its large-scale application is unclear mechanisms of high efficiency conversion and effective energy utilization in biomethane process. In this work，the key problems in biomethane process were discussed based on new theory of chemical engineering. It was concluded that that rapid progress can be made in biomethane industry in China with the help of new theory of interface transport，new micro and nano materials and system optimization methods.

Key words: biomethane, transform efficiently, chemical engineering, interface, system optimization

摘要： 生物甲烷作为战略资源和可再生能源已在德国和瑞典等发达国家得到快速发展，我国尚处于起步阶段。目前，对生物甲烷物质高效转化和能量有效利用机制缺乏深入了解仍然是制约其大规模应用的瓶颈。本文从化学工程前沿理论出发，分析生物甲烷高效转化存在的关键科学问题，认为基于中国国情的生物甲烷工业，可以在化工界面传递新理论、纳微尺度新材料和系统优化方法介入下，获得物质转化和能量利用方面的突破，实现生物甲烷产业的跨越式发展。

关键词: 生物甲烷, 高效转化, 化学工程, 纳微界面, 系统优化