Sensitivity of Asphaltene Properties to Separation Techniques

摘要: Asphaltene properties vary with separation method and sometimes individual technique. Factors such as contact time, solvent-to-crude oil ratio, temperature influence asphaltene precipitation are somewhat standardized. However, the final step in most separations, washing filter cake solvent, is not can be very sensitive to small amounts of resins therefore may amount washing. Asphaltenes were extracted three different levels from four source oils (Athabasca, Cold Lake, Lloydminster, Peace River). In all cases, increased decreased yield slightly density. Increased significantly molar mass solubility asphaltenes. A new using a Soxhlet apparatus removed largest resinous material yielded asphaltenes conventionally washed asp...