为探究煤液化柴油理化特性对整车实际道路排放特性和油耗的影响,选用石油基国六柴油(G6)、煤直接液化柴油(diesel of direct coal liquefaction,DDCL)以及煤直接液化和间接液化调和柴油(diesel of blend coal liquefaction,DBCL)三种油...为探究煤液化柴油理化特性对整车实际道路排放特性和油耗的影响,选用石油基国六柴油(G6)、煤直接液化柴油(diesel of direct coal liquefaction,DDCL)以及煤直接液化和间接液化调和柴油(diesel of blend coal liquefaction,DBCL)三种油品,在满足国Ⅵ排放法规的柴油车上依据GB 17691—2018,开展实际道路排放测量方法(PEMS)试验。结果表明:DDCL在三种油品中具有最低的硫含量、多环芳烃含量、运动黏度和t90/t95温度(燃料90%和95%回收温度),这些特性使其在燃油排放和油耗性能方面表现出色,因较低的硫与多环芳烃的含量可减少有害物生成,较低的运动黏度与t90/t95温度能提升雾化和燃烧效率,降低油耗并改善排放;在排放性能方面,与G6相比,DDCL和DBCL的NO_(x)排放分别下降了63.82%和39.11%,DDCL的PN(污染物的粒子数量)排放下降了40.54%,DDCL和DBCL的CO排放分别下降了97.24%和96.02%;在油耗方面,与G6相比,DDCL和DBCL燃油的百公里油耗分别下降了7.81%和2.34%。展开更多
The recycled oil from coal liquefaction was separated into three fractions(saturates,aromatics and polar fraction) by liquid chromatograph according to group composition.Each fraction was analyzed qualitatively by 1H-...The recycled oil from coal liquefaction was separated into three fractions(saturates,aromatics and polar fraction) by liquid chromatograph according to group composition.Each fraction was analyzed qualitatively by 1H-NMR spectra,then the aromatic fraction was characterized using gas chromatograph/mass spectrometer(GC-MS).It shows that liquid chromatograph is well used to separate coal liquefaction oil with high repeatability and high recovery yield.Aromatic fraction with carbon number from C10 to C21 mainly includes dicyclic-,tricyclic-and tetracyclic-hydrogenation aromatic compounds such as tetrahydronaphthalene,hydrophenanthrene,hydropyrene and their alkyl substitution compounds and so on.展开更多
文摘为探究煤液化柴油理化特性对整车实际道路排放特性和油耗的影响,选用石油基国六柴油(G6)、煤直接液化柴油(diesel of direct coal liquefaction,DDCL)以及煤直接液化和间接液化调和柴油(diesel of blend coal liquefaction,DBCL)三种油品,在满足国Ⅵ排放法规的柴油车上依据GB 17691—2018,开展实际道路排放测量方法(PEMS)试验。结果表明:DDCL在三种油品中具有最低的硫含量、多环芳烃含量、运动黏度和t90/t95温度(燃料90%和95%回收温度),这些特性使其在燃油排放和油耗性能方面表现出色,因较低的硫与多环芳烃的含量可减少有害物生成,较低的运动黏度与t90/t95温度能提升雾化和燃烧效率,降低油耗并改善排放;在排放性能方面,与G6相比,DDCL和DBCL的NO_(x)排放分别下降了63.82%和39.11%,DDCL的PN(污染物的粒子数量)排放下降了40.54%,DDCL和DBCL的CO排放分别下降了97.24%和96.02%;在油耗方面,与G6相比,DDCL和DBCL燃油的百公里油耗分别下降了7.81%和2.34%。
文摘The recycled oil from coal liquefaction was separated into three fractions(saturates,aromatics and polar fraction) by liquid chromatograph according to group composition.Each fraction was analyzed qualitatively by 1H-NMR spectra,then the aromatic fraction was characterized using gas chromatograph/mass spectrometer(GC-MS).It shows that liquid chromatograph is well used to separate coal liquefaction oil with high repeatability and high recovery yield.Aromatic fraction with carbon number from C10 to C21 mainly includes dicyclic-,tricyclic-and tetracyclic-hydrogenation aromatic compounds such as tetrahydronaphthalene,hydrophenanthrene,hydropyrene and their alkyl substitution compounds and so on.
