摘要
中国明确提出了2020年实现全国覆盖E10汽油目标,但目前生物燃料乙醇实际产出不到目标的1/4,中国生物燃料乙醇是否有潜力实现该目标成为了不可回避的课题。本文利用净能源理论对生物燃料乙醇进行了能源投入回报(EROI)分析,确定中国木薯、甜高粱和秸秆为原料的燃料乙醇EROI均大于1,具备可行性,但受资源限制净能源供应能力还远低于汽油。本文提出2点建议:一是加快提效降耗技术发展,将EROI提高到1.78左右,将生物燃料乙醇EROI对净能源量的影响降低到较低水平;二是着力开发秸秆资源利用,控制边际性土地大面积开发利用,促进生物质能友好发展。
China has clearly stated that it will achieve the goal of nationwide covering E10 gasoline by 2020. However, the actual output of bioethanol is less than 1/4 of the target now. Whether China’s bioethanol can achieve this goal become an unavoidable issue. The paper studies EROI analysis of bioethanol by different raw material and gasoline. The results show that the EROI of bioethanol all are more than 1, which means feasible, but due to limited resource its net energy supply ability is still lower than gasoline. Finally, the paper offers two suggestions: first, it should speed up the technology for reducing energy consumption, and enhance the EROI to 1.78, which means that the bioethanol EROI impact on net energy lowly;secondly, it should focus on the development of straw resources and control marginal land large-scale use to promote the friendly development of biomass.
出处
《中国能源》
2019年第4期31-37,22,共8页
Energy of China
