中文摘要：

在连续流动固定床加氢装置上,采用Ni W-P/Al_2O_3催化剂对高温煤焦油脱除大部分S、N、O后经蒸馏切割得到的芳烃质量分数较高的柴油馏分进行加氢精制,考察了反应温度、反应压力、液体体积空速和氢油体积比对芳烃脱除率和产物分布的影响,得到的最佳工艺条件为：反应温度为340℃,反应压力为8.0 MPa,液体体积空速为0.3 h~（-1）,氢油体积比为1 500。结果表明,适宜的反应温度和氢油体积比、较高的反应压力和较低的液体体积空速有利于柴油馏分中芳烃的脱除,其脱除率达到70%以上。

英文摘要：

In a continuous flow fixed bed reactor,the diesel distillate with high aromatics content,which is obtained by removing most of S,N and O and then cutting distillation of coal tar,is refined through hydrogenation under the presence of Ni W-P/Al2O3 catalyst. The effects of temperature,pressure,liquid volume space velocity（ LHSV） and volume ratio of hydrogen to oil on the removal rate of aromatics and product distribution are investigated. The optimum conditions are determined as follows： reaction temperature at 340℃,reaction pressure at 8. 0 MPa,LHSV at 0. 3 h-1 and volume ratio of hydrogen to oil at 1 500.The results indicate that suitable temperature and volume ratio of hydrogen to oil,higher reaction pressure and lower LHSV are helpful to remove aromatics.The removal rate can exceed 70%.