RESEARCH PROGRESS ON GREEN THERMAL UPGRADING TECHNOLOGY OF HEAVY OIL

Abstract

Abstract: Unconventional oil has high viscosity and poor fluidity, which severely restricts its transportation and downstream processing. How to upgradeit has become the key to its development and utilization. Driven by stringent environmental protection requirements and the dual-carbon policy, the upgrading of unconventional oil is bound to move towards a green and clean direction. Based on this, this paper reviews the research progress in the greenthermal upgrading technologies for unconventional oil, with heavy oil as a typical representative. These technologies include traditional hydrogen/hydrogen donor thermal cracking , upgrading with supercritical water , upgrading with hydrogen from water-gas shift reaction, and upgrading under methane. The theoretical research foundations, technical advantages, constraints, industrial application progress, and prospects of various green upgrading technologies are analyzed, providing reference and guidance for the innovation and development of green upgrading technology for heavy oil.

Key words: heavy oil, green upgrading, viscosity reduction and upgrading, upgrading with supercritical water, upgrading with hydrogen from water-gas shift reaction, upgrading under methane

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