WTW车用煤基燃料的经济性与环保性研究

为了研究WTW车用燃料的经济性与环保性,利用GREET模型对煤间接液化合成油、煤直接液化合成油、煤制天然气和整体煤气化联合循环发电IGCC 4种煤基燃料进行WTW计算,并对比分析了4种燃料在WTW各个阶段的能耗和CO2排放量。结果表明：4种煤基燃料的能耗由大到小为煤制天然气〉煤间接液化合成油〉煤直接液化合成油〉IGCC,其中煤间接液化合成油、煤直接液化合成油及煤制天然气的能耗都约为传统柴油或汽油的2倍,IGCC的总能耗是传统汽油的3/5左右;CO2排放排序为：煤间接液化合成油〉煤制天然气〉煤直接液化合成油〉IGCC,其中煤间接液化合成油、煤直接液化合成油和煤制天然气的CO2排放量都为传统柴油或汽油的1.6～3.1倍,IGCC的CO2排放量是传统汽油的7/10左右;煤间接、直接液化合成油和煤制天然气都有一定的市场竞争力,IGCC成本较高,且高于传统发电成本。

Economics and environmental protection of clean coal technology based on WTW vehicle fuel

Using GREET model,the life cycles of synthetic oil from indirect and direct coal liquefaction,synthetic natural gas and IGCC based on the WTW theory（ from Well to Wheel） were calculated. The energy consumption and CO2 emission at all stages of the four kinds of fuel in the WTW were analyzed. The results show that,the total energy consumption from high to low is synthetic natural gas,indirect coal liquefaction synthetic oil,direct coal liquefaction synthetic oil,IGCC. The energy consumption of the first three is about two times of conventional diesel or gasoline,the total energy consumption of IGCC is about three-fifths of the traditional gasoline. The CO2 emission amount decrease gradually from indirect coal liquefaction synthetic oil,synthetic natural gas,direct coal liquefaction synthetic oil to IGCC.The emission amount of the first three,which have a certain market competitiveness,is 1. 6 to 3. 1 times of diesel or gasoline. The CO2 emissions of IGCC,which costs more than conventional one,is about seven-tenths of the CO2 emissions from traditional gasoline.