Stratiev Dicho, Nenov Svetoslav, Shishkova Ivelina, Georgiev Borislav, Argirov Georgi, Dinkov Rosen, Yordanov Dobromir, Atanassova Vassia, Vassilev Petar, Atanassov Krassimir
LUKOIL Neftohim Burgas, 8104 Burgas, Bulgaria.
University of Chemical Technology and Metallurgy, Kliment Ohridski 8, 1756 Sofia, Bulgaria.
ACS Omega. 2020 Dec 14;5(51):33290-33304. doi: 10.1021/acsomega.0c05073. eCollection 2020 Dec 29.
The LUKOIL Neftohim Burgas vacuum residue hydrocracking has increased the vacuum residue conversion from 55 to 93% as a result of a proper feed selection, optimal catalyst condition, and the use of a Mo nanodispersed catalyst. It was found that the feed colloidal instability index estimated from the feed saturates, aromatics, resins, and asphaltenes (SARA) data negatively correlated with the conversion. Correlations based on the use of the nonlinear least-squares method, which relates the density to the aromatic structure contents for the straight run and hydrocracked vacuum residues, were developed. Intercriteria analysis was applied to evaluate the relations between the different properties of the straight run and the hydrocracked vacuum residual oils. The density of the hydrocracked vacuum residue measured by dilution with toluene was found to strongly correlate with the conversion, Conradson carbon content, softening point, and Fraasss breaking point.
通过合理选择原料、优化催化剂条件以及使用钼纳米分散催化剂，卢克石油公司布尔加斯炼油厂的减压渣油加氢裂化工艺使减压渣油转化率从55%提高到了93%。研究发现，根据原料饱和烃、芳烃、胶质和沥青质（SARA）数据估算的原料胶体不稳定指数与转化率呈负相关。基于非线性最小二乘法建立了关联直馏减压渣油和加氢裂化减压渣油密度与芳烃结构含量的相关性。运用多准则分析来评估直馏减压渣油和加氢裂化减压渣油不同性质之间的关系。结果发现，用甲苯稀释法测得的加氢裂化减压渣油密度与转化率、康氏残炭含量、软化点和弗拉斯脆点密切相关。
