15-07-2021 дата публикации
Номер: US20210214620A1
A method of upgrading a petroleum feedstock, the method comprising the steps of introducing a disulfide oil, a water feed, and a petroleum feedstock to a supercritical water upgrading unit, and operating the supercritical water upgrading unit to produce a product gas stream, a product oil stream, and a used water stream. 1. A system for upgrading a petroleum feedstock , the system comprising:a disulfide oil unit, the disulfide oil unit is operable to produce a disulfide oil from a disulfide oil unit feed, where the disulfide oil comprises disulfides, wherein the disulfides comprise sulfur-containing compounds of the form Ci-SS-Cj, where C refers to carbon, where S refers to sulfur, where i is selected from 1, 2, 3, 4, 5, and 6, where j is selected from 1, 2, 3, 4, 5, and 6, wherein the disulfide oil comprises a total sulfur content of greater than 30% by weight;a supercritical water upgrading unit, the supercritical water upgrading unit operable to produce a product gas stream, a product oil stream, and a used water stream, wherein a supercritical water reactor of the supercritical water upgrading unit is operated at a temperature between 380 deg C. and 600 deg C. and a pressure in the range between 3203 psig and 5150 psig.2. The system of claim 1 , where the supercritical water upgrading unit comprises:a petroleum mixer, the petroleum mixer operable to mix the disulfide oil and a petroleum feedstock to produce a mixed petroleum stream;a petroleum pump, the petroleum pump operable to increase a pressure of the mixed petroleum stream to produce a pressurized petroleum stream;a petroleum heater, the petroleum heater operable to increase a temperature of the pressurized petroleum stream to produce a hot petroleum stream;a mixer, the mixer operable to mix the hot petroleum stream and a supercritical water stream to produce a mixed feed;a supercritical water reactor, the supercritical water reactor operable to produce a modified stream, where conversion reactions occur ...
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