SUPERCRITICAL FLUID TECHNOLOGY AND ITS APPLICATION IN TREATMENT OF HEAVY OIL

Abstract

Abstract: Supercritical fluids, characterized by low viscosity and high solubility, have been widely utilized as new type of green solvents in fields such as pharmaceuticals, materials, and petroleum refining. The introduction of supercritical fluid into the upgrading process of heavy oil can not only enhance the mass transfer capacity for asphaltene but also accelerate the rate of hydrogenation reaction by reducing the viscosity of the system, particularly prolonging the catalyst lifetime by inhibiting coking. This approach represents an energy-efficient, environmentally friendly, and low-carbon solution for heavy oil treatment. The concept and properties of supercritical fluids are summarized, and the application researches of different types of supercritical solvents in heavy oil processing are reviewed. The directions and prospects of supercritical fluid treatment in heavy oil were outlined.

Key words: supercritical water, supercritical aromatic hydrocarbons, extraction, heavy oil, hydroupgrading, hydrogen-donor solvent, asphaltene

References

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