胜利稠油催化改质降黏的机理  

Mechanism of aboveground upgrading and viscosity reduction for Shengli heavy oil by catalysis

作　　者：雷斌[1] 黄娟[1] 侯钰[1] 李本高[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油化工》2016年第10期1209-1214,共6页Petrochemical Technology

基　　金：中国石油化工股份有限公司项目(212112);国家重点基础研究发展计划项目(2011CB201006)

摘　　要：采用复合型有机金属盐催化体系对胜利某稠油进行地面催化改质降黏,并对催化改质降黏的机理进行了探讨。实验结果表明,降黏效果显著,降黏率大于99%;稠油组成显著轻质化,高于500℃的馏分由改质前的28.02%(w)增至改质后的52.20%(w)。改质前后的族组成、碳数分布和核磁分析结果显示,改质过程重质组分发生了脱侧链反应,生成轻质产物,并使重质组分转化成为缩合程度更高的胶质沥青质或焦炭。The aboveground upgrading and viscosity reduction of the ShengLi heavy oil were investigated with a catalyst system containing organometallic salts. The mechanism of the viscosity reduction was discussed. The experimental results showed that the viscosity reduction rate reached more than 99%. It was found that the oil sample became lighter after the catalytic upgrading and the fractions with the boiling range of 〈500℃ increased from 28.02% to 52.20%. The analysis of the family composition, carbon number distribution and NMR of the samples before and after the upgrading indicated that the removal of side chains in the heavy components was major reactions in the upgrading. The heavy components were converted into lighter products, such as cracking gas, saturated and aromatic hydrocarbons, as well as asphaltene and coke with higher condensation degree.

关 键 词：稠油 催化改质 碳数分布 降黏机理 

分 类 号：TQ032[化学工程]