摘要
以年产5万t甲醇的稻秸气化合成甲醇系统为研究对象,采用生命周期评价方法,对该系统进行了环境-经济成本分析.结果表明,稻秸合成甲醇系统的环境影响成本是284.99元/t(以甲醇计),且主要集中在生产转化过程和下游甲醇燃料消费2个单元阶段.在不同环境影响类型中,温室效应是生命周期最主要的环境影响因素,由于稻秸固碳作用产生的环境成本是-152.79元/t,生产上游温室效应影响负荷为负、总环境影响负荷为负.每t稻秸甲醇的真实成本比煤基甲醇低76.84元.
A rice straw gasification for methanol production system of annual 50,000 t was investigated. Based on life cycle assessment, environmental and economic analysis of the process were performed. The total environmental cost of the bio-methanol was 284.99 yuan per ton（via methanol）, and it was mainly concentrated in methanol production and methanol consumption. The greenhouse effect was the most important impact factor, among the various types environmental cost of the bio-methanol. Environmental cost of rice straw carbon sequestration, in the upstream of production, was - 152.79 yuan per ton, so both the greenhouse effect and the overall environmental impact are negative. Through comparison, it was evident that the total cost of the bio-methanol was 76.84 yuan/ton lower than that of coal based methanol.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2009年第11期1221-1226,共6页
China Environmental Science
基金
国家"973"项目(2007CB210208)
国家自然科学基金资助项目(50776019)
教育部新世纪优秀人才支持计划资助项目(NCET-05-0469)
关键词
稻秸气化
甲醇
生命周期评价
综合性能
rice straw gasification
methanol
life cycle assessment
environmental assessment
