伊朗常压渣油和加氢尾油的性质与组成研究

利用超临界流体萃取分馏技术,对伊朗常渣及其加氢尾油进行了分离,测定了窄馏分的密度、折光率、残炭量、平均相对分子质量、元素、金属含量(镍、钒)、族组成(饱和分、芳香分、胶质、沥青质),对两种窄馏分的性质及其随收率的变化规律进行了分析对比,计算了窄馏分的平均沸点。对加氢尾油馏分的二次加工性能进行了预测,分析了萃取分馏窄馏分和残渣的性质和组成对加工过程的影响。结果表明,加氢尾油的馏分不适宜作为裂解原料,可以作为催化裂化的原料。

Properties and composition of hydrogenation residue produced from Iran atmospheric residue

The hydrogenation residue was separated from the atmospheric residue of Iran crude oil by supercritical fluid extraction and fractionation technology. The density, refractive index, carbon residue, average molecular weight, elemental contents, contents of nickel and vanadium and composition including saturates, aromatics, resin and asphaltenes of each feedstock and their subfractions were measured. The average boiling points of the subfractions were calculated. The properties of the narrow fractions and endcut as well as their effects on processing were studied. The results show that fractions of the hydrogenation residue are suitable for catalyzed cracking materials instead of cracking materials.