不同沥青质在十氢萘体系中的加氢转化反应性能研究

以十氢萘为溶剂,在高压釜中考察了不同溶剂抽提所得不同来源沥青质的加氢转化反应性能.结果 表明,十氢萘可以改变沥青质体系的分散性能并起到供氢剂的作用,使沥青质具有较好的加氢转化性能,转化率均在60％以上,焦炭产率低于原油体系.不同溶剂分离所得沥青质的结构和组成不同,戊烷沥青质的转化率高于同一原料的庚烷沥青质.石蜡基沥青质...

HYDROTREATING CONVERSION PERFORMANCE OF DIFFERENT ASPHALTENES IN DECALIN SYSTEM

The hydrotreating conversion performance of different asphaltenes separated by different solvent in decalin was investigated in an autoclave. The results show that the asphaltenes have better hydrotreating conversion performance in decalin with the conversion rate higher than 60%, and coke yield lower than that of corresponding residue. The conversion of pentane-asphaltenes is higher than that of heptane-asphaltenes from the same raw material because of the different structure and composition of asphaltenes separated by different solvents. The coke yield of asphaltenes from paraffin-based crude used in this study is higher, and the conversion and product distribution are slightly lower, which is different from the traditional understanding. It shows that the hydrogenation reactivity of asphaltenes is not only related to the base genus of residual oil raw materials, but also to the molecular structure of asphaltenes itself.