加氢渣油中沥青质的加氢再转化性能  

Hydrogenation Conversion Performance of Asphaltene in Hydrotreated Residue

作　　者：王红[1] 王子军[1] 王翠红[1] 佘玉成[1] 王威[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2016年第5期875-882,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2012CB224801)资助

摘　　要：采用单程加氢和循环加氢的方法,考察了加氢渣油中沥青质进一步转化的可行性。利用超临界流体萃取分馏仪分离出加氢渣油中富含沥青质和杂原子的脱油沥青,将其与加氢渣油调合后进行再加氢,考察加氢渣油中沥青质的加氢再转化性能。在此基础上,通过循环加氢的方式,考察加氢渣油中沥青质循环加氢的转化性能,并采用FT-ICR MS手段分析沥青质的分子结构和组成。结果表明,加氢渣油经超临界流体萃取得到的富含沥青质的脱油沥青在进一步加氢过程中能够继续转化。循环加氢过程中,正戊烷沥青质的转化率能够达到70%左右;随着加氢次数的增加,沥青质中含硫化合物(S_1、S_2、N_1S_1、N_1O_1S_1结构)能够被有效加氢,而含氮化合物(N_1、N_2结构)加氢转化困难,HC芳烃结构最难以转化。The hydrogenation conversion performance of asphaltene in hydrotreated residue was investigated by using one-way and circulation hydrogenations. The deoiled asphalt （DOA） of hydrotreated residue was acquired by supercritical fluid extraction, and then mixed with hydrotreated residue and hydrotreated to investigate the hydrogenation conversion performance of asphaltene, based on which, the sustaining hydrogenation conversion performance of asphaltene was investigated by the way of circulation hydrogenation. The molecular structure and composition of asphaltene were analyzed by FT-ICR MS method. The results showed that the asphaltene could be further converted through hydrogenation process. The conversion rate of nC5 asphaltene reached about 70% in circulation hydrogenation. With the increase of the circulation times, S-heterocycle structure （S1 , S2 , N1S1 , N1O1S1） in asphaltene could be relatively easily removed. It is difficult to convert the N-heterocycle structure part （N1 , N2） and the most difficult to convert HC aromatic structure part in asphaltene hydrogenation.

关 键 词：加氢渣油 加氢 脱油沥青 沥青质 转化 

分 类 号：TE624[石油与天然气工程—油气加工工程]