煤制甲醇燃料矿井到油箱的生命周期评价

Well-to-tank life cycle assessment for coal derived methanol fuel

为探讨中国煤制甲醇技术的发展和应用,设计了5种从矿井到油箱过程的煤制甲醇方案,特别针对多联产战略制订了3种甲醇、电的多联产技术路线。运用生命周期评价方法对这些方案的环境影响、经济性和能源利用效率进行评价,并根据国情计算了7种主要污染物排放量,对若干参数进行了敏感性分析。结果表明:甲醇、电的多联产系统在环境影响、经济性和能源利用效率方面都要优于单产系统。该文的计算结果和方法可以作为未来煤制甲醇系统选择的参考。

Five different designs for coal derived methanol fuel well-to-tank processes were analyzed to facilitate the future development and utilization of coal derived methanol fuel technologies in China. Three of the systems were polygeneration systems for coproduction of methanol and electricity with life cycle assessment used to evaluate the environmental effects, energy utilization efficiencies and economic performances. The emissions of seven main pollutants were also analyzed as functions of various parameters. The results show that the methanol and electricity polygeneration systems are better than the stand-alone system in terms of the environmental, energy and economic performances.