中文摘要：

煤液化中油馏分是煤液化的主要产物.以煤液化中油为原料,FV-20为催化剂,在微型反应釜中考察了不同温度和时间下对其进行加氢裂解反应前后的族组成变化.结果表明,在400℃以前,饱和烃含量随着温度的升高、时间的延长逐渐减小;在440℃,40min时出现最小值,饱和烃中直链烷烃随温度升高逐渐减小,环烷烃含量变化不大,芳烃含量逐渐增加;440℃,30min时出现最大值82.65%,其中单环芳烃逐渐增加,而双环和多环芳烃逐渐减少;极性物含量逐渐减小;产物中气态烃类在低于400℃时,随温度增加,CH4含量逐渐减少,C2H6和C3H8含量逐渐增大,在高于该温度时有C4H10出现,但气态烃产率变化不大.

英文摘要：

The middle distillate oil is the main product of coal liquefaction.In this paper,the group composition change of middle distillate oil from coal liquefaction before and after hydrocracking was investigated in an autoclave at different temperature and time using FV-20 as catalyst.The results show that the content of saturates gradually decrease with the temperature and time increasing before it reachs 400 ℃.It reaches its minimum when it is 440 ℃ after 40 minutes.The n-C12-27 of saturates decreasing with the growing of temperature,whereas cyclic-saturates doesn＇t change much.The content of aromatics increases and has its maximum of 82.65% when it is 440 ℃ after 30 minutes,and content of mono-aromatics increase but diand multi-aromatics decrease.The content of polar compounds is also decreasing.When the temperature is lower than 400 ℃,the gaseous hydrocarbon which mainly concludes CH4,C2H6,C3H8 react differently.With the increasing the reaction temperature,C4H10 appears in the gaseous hydrocarbon,but its yield doesn＇t changes too much.