论文部分内容阅读
用正戊烷为溶剂，在超临界条件下将６种国内与２种国外减压渣油分离成不同的宽馏分和窄馏分，测试了它们的残炭值、ＳＡＲＡ及元素组成。结果表明，渣油的残炭值与氢碳比密切相关；各种渣油的元素和化学组成的含量及分布是有差别的：镍倾向于分布在重组分中，孤岛和辽河渣油最为明显；大庆、华北渣油为低硫、高氮原油，氮和硫在渣油中分布平均；胜利、孤岛、沙特和阿曼是含硫原油，Ｎ／Ｓ原子比小于１，氮、硫在渣油中随馏分变重由小到大；大港、辽河渣油的氮大部分富集在重组分中；不同渣油的窄馏分ＳＡＲＡ组成变化规律基本类似。
Using n-pentane as solvent, six kinds of domestic and two kinds of foreign vacuum residue were separated into different wide fractions and narrow fractions under supercritical conditions, and their residual carbon values, SARA and elemental composition were tested. The results show that the residual carbon value of residual oil is closely related to the ratio of hydrogen to carbon. The content and distribution of elements and chemical compositions of various residual oils are different: nickel tends to be distributed in heavy components, and island and Liaohe residue are the most obvious ; Daqing, North China residual oil is low sulfur, high nitrogen crude oil, nitrogen and sulfur are evenly distributed in the residual oil; Victory, Islands, Saudi Arabia and Oman are sulfur-bearing crude oil, N / S atomic ratio is less than 1, In the heavy fraction, the heavier fractions of heavy fraction in Dagang and Liaohe were enriched in the heavy fraction; the variation of SARA composition of the narrow fraction in different residues was similar.