Patent ID: 10870805

Abstract:
A method for sulfur removal and upgrading comprising the steps of mixing a heated oil feed and a supercritical water feed in a feed mixer, allowing conversion reactions to occur in the supercritical water reactor, reducing the temperature in the cooling device to produce a cooled fluid, reducing the pressure in the depressurizing device to produce a discharged fluid, separating the discharged fluid in the gas-liquid separator to produce a liquid phase product, increasing the pressure to produce pressurized liquid product, the pressure of pressurized liquid product is greater than the critical pressure of water, processing the pressurized liquid product in the hydration reactor to produce a hydrated oil stream, separating the hydrated oil stream to produce an extracted upgraded oil and an oxygenate concentrated stream, the oxygenate concentrated stream comprises the oxygenates, and processing the extracted upgraded oil in the hydrotreater to produce a desulfurized upgraded oil.