Solvent deasphalting (SDA) is a heavy oil upgrading process that selectively extracts deasphalted oil (DAO) and rejects asphaltenes. In this study, a quantitative analysis was conducted to predict DAO yields in the SDA process using relative energy difference (RED); the RED was calculated from Hansen solubility parameters (HSPs) of the feedstock and extraction solvent along with the extraction conditions, such as temperature and solvent-to-oil ratio (SOR). SDA extraction experiments were performed in a continuous bench-scale unit using vacuum residue (VR) and a mixture of bunker C fuel oil (BC) and VR as feedstocks. The HSPs of saturate, aromatic, resin, and asphaltene fractions derived from the VR and BC were measured using solubility tests, wherein the fractions were dissolved in 37 different solvents. Finally, simple and accurate correlations between the DAO yield and corresponding modified RED were acquired and used to explain the effects of temperature and SOR on the DAO yield.

溶剂脱沥青 (SDA) 是一种重油改质工艺，可选择性地提取脱沥青油 (DAO) 并剔除沥青质。在这项研究中，使用相对能量差 (RED) 进行了定量分析以预测 SDA 过程中的 DAO 产量；RED 是根据原料和萃取溶剂的汉森溶解度参数 (HSP) 以及萃取条件（例如温度和溶剂油比 (SOR)）计算得出的。SDA 提取实验是在一个连续的小型装置中使用减压渣油 (VR) 和地堡 C 燃料油 (BC) 和 VR 的混合物作为原料进行的。使用溶解度测试测量源自 VR 和 BC 的饱和、芳烃、树脂和沥青质馏分的 HSP，其中这些馏分溶解在 37 种不同的溶剂中。最后，