碳酸二甲酯为添加剂的汽油生命周期评价研究

Life cycle assessment of gasoline with dimethyl carbonate as additive

碳酸二甲酯(DMC)是近年来广受关注的环保型绿色化学品,由于其含氧量高、环保、无毒,一直被认为是极具潜力的替代甲基叔丁醚的汽油添加剂。使用生命周期评价方法对DMC为添加剂的汽油的环境影响进行分析,将其整个生命周期分为5个子过程,并考虑包括人类健康毒性(HTP)等12种环境影响。结果表明:DMC为添加剂的汽油的总环境影响为2.74×10^(-11),其中HTP的环境影响贡献最大;汽油生产调和及储存子过程的环境影响贡献最大,运输和汽车使用子过程的环境影响贡献相对很低。

Dimethyl carbonate(DMC)is an environmentally friendly green chemical that has attracted much attention in recent years.Because of its high oxygen content,environmental protection,and non-toxicity,it has been considered as a promising alternative to methyl tert-butyl ether as gasoline additive.The life cycle assessment method was used to analyze the environmental impact of gasoline with DMC as additive,divided its whole life cycle into five sub-processes and considered twelve environmental impacts including human health toxicity(HTP).The results showed that the total environmental impact of gasoline with DMC as additive was 2.74×10^(-11).HTP was the largest type of environmental impact contribution for this gasoline.The gasoline production blending and storage sub-process contributed the most,while the environmental impact contribution of transportation and vehicle operation sub-processes was low.