加氢裂化反应尾油中烃组成变化规律的研究  

STUDY ON CHANGES OF HYDROCARBONS COMPOSITION OF HYDROCRACKING TAIL OIL

作　　者：张月红[1] 张富平[2,3] 胡志海[3] 李大东[3] 

机构地区：[1]中国石化北京化工研究院燕山分院,北京102500 [2]北京石油化工工程有限公司 [3]中国石化石油化工科学研究院

出　　处：《石油炼制与化工》2014年第11期44-47,共4页Petroleum Processing and Petrochemicals

摘　　要：以沙轻减压蜡油为原料,考察了加氢裂化过程不同反应阶段尾油烃组成的变化规律。当转化率低于58.7%时,加氢裂化尾油中链烷烃收率基本不变;转化率高于58.7%时,尾油中链烷烃收率随转化率升高而下降。分析造成链烷烃总量变化的原因,环状烃的开环、断侧链反应,反应产物进入轻组分是造成尾油中链烷烃含量相对增加的主要因素,因此,提高催化剂的环状烃开环能力能够提高产品尾油中链烷烃的相对含量。The changes of hydrocarbon composition of hydrocracking tail oil in different reaction stages are discussed using Saudi Arab VGO as a feedstock.Paraffin content of hydrocracking tail oil increases with conversion rate rising.The proportion of paraffins in tail oil remains basically no change when the conversion rate is lower than 58.7%and decreases when the conversion rate is higher than 58.7%.Analysis suggests that ring-opening of cyclic hydrocarbon,off side chain reaction and the reaction products into the light component are the main causes for the changes.Therefore,the paraffin content of tail oil increases with the improvement of cyclic hydrocarbon ring opening ability of the catalyst.

关 键 词：加氢裂化尾油 链烷烃 环状烃 

分 类 号：TE624[石油与天然气工程—油气加工工程]