煤基DME、FTD生命周期能耗及温室气体排放评价

Life Cycle Energy Use and GHG Emissions Assessment for Coal Derived DME and FTD

对煤基DME和FTD生命周期能耗及温室气体排放评价进行了研究.结果表明,煤基DME和煤基FTD车用燃料生命周期总能耗分别为传统柴油的1.8倍和1.6倍,但是可以大大降低石油的使用量,石油消耗仅占不到8％;生命周期温室气体排放分别为传统柴油的2.1倍和1.9倍.CCS技术的采用可使煤基DME和煤基FTD生命周期温室气体的排放分别降低36％和46％,且这些减排只需要增加6.3％～7.7％的总能耗.上述研究结果可为我国能源多元化战略提供参考.

This study provides an life cycle assessment of coal derived vehicle fuel. Two fuel pathways are evaluated, one is DME pathway, and the other is FTD pathway. The effects of CCS technology on energy use and GHG emissions are analyzed. For DME pathway, WTW total energy use and fossil energy is about 80% larger than that for petroleum diesel production, and increases life-cycle GHG emissions by 210% relative to petroleum diesel. For FTD pathway, WTW total energy use and fossil energy is about 60% larger than that for petroleum diesel production, and increases life-cycle GHG emissions by 190% relative to petroleum diesel.CCS incurs an energy penalty of 6.3-7.7%, but obtains 36-46% reductions for GHG emission.