CPC C10G 31/08 (2013.01) [C10G 9/005 (2013.01); C10G 2300/1033 (2013.01); C10G 2300/206 (2013.01); C10G 2300/4081 (2013.01); C10G 2300/708 (2013.01); C10G 2300/805 (2013.01)] | 7 Claims |
1. A process for reducing coke or coke precursor formation in supercritical water comprising:
producing a supercritical water stream by heating and pressurizing a feed water;
mixing the supercritical water stream with pressurized, heated feed oil in a mixing device to create a combined feed stream;
feeding the combined feed stream into a supercritical water (ScW) reactor to produce an upgraded product, where the supercritical water reactor operates at a temperature greater than a critical temperature of water and a pressure greater than a critical pressure of water;
producing a cooled, depressurized upgraded product by cooling and depressurizing the upgraded product;
separating the cooled, depressurized upgraded product in a fractionator into a liquid hydrocarbon stream and a hydrocarbon vapor stream;
condensing the hydrocarbon vapor stream with a cooling device to produce a light hydrocarbon water mixture and a separate gas product; and
recycling the light hydrocarbon water mixture to mix with the feed water upstream of the supercritical water reactor.
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