城市客车燃用沼气的生命周期分析

Life Cycle Analysis of Vehicle Biogas for City Bus

应用生命周期分析方法建立了城市垃圾厌氧发酵车用沼气燃料的生命周期能耗和环境排放模型,对车用沼气在原料阶段、燃料生产阶段和车辆运行阶段的能耗和环境排放进行了分析计算,并将城市客车燃用沼气和柴油的生命周期能耗和排放指标进行了对比分析.结果表明,在车用沼气的全生命周期内,燃料的总能源消耗比传统柴油低9.5%,全生命周期HC、CO、NO^X、PM10、SO^2、CO^2等6种排放物都比柴油低.从降低生命周期能耗和环境排放角度看,城市垃圾厌氧发酵车使用沼气是一种较好的新能源燃料;从城市垃圾处理方式看,城市垃圾厌氧发酵车用沼气为城市垃圾处理寻找了新的途径.

The life cycle of energy consumption and environmental emissions analysis model of vehicle biogas for anaerobic fermentation of municipal waste is established by using life cycle analysis method in this paper. The energy consumption and environmental emissions of vehicle biogas in the raw material stage,fuel production stage and vehicle operation phase is analyzed and calculated. And the life cycle indicator of vehicle biogas and diesel fuels used in city bus is analyzed and compared. The results show that compared with conventional diesel in the total life cycle, the total energy consumption of vehicle biogas decreases by9.5%, and the six kinds of emissions such as HC、CO、NOX、PM10、SO2、CO2all reduced. Form the viewpoint of reducing energy consumption and environmental pollutant emissions, vehicle biogas for anaerobic fermentation of municipal waste would be better new alternative fuels, and it found a new way to city garbage process.