Integrated oil production and upgrading using molten alkali metal
A method that combines the oil retorting process (or other process needed to obtain/extract heavy oil or bitumen) with the process for upgrading these materials using sodium or other alkali metals. Specifically, the shale gas or other gases that are obtained from the retorting/extraction process may be introduced into the upgrading reactor and used to upgrade the oil feedstock. Also, the solid materials obtained from the reactor may be used as a fuel source, thereby providing the heat necessary for the retorting/extraction process. Other forms of integration are also disclosed.
1. A method for upgrading an oil feedstock comprising:
retorting oil shale to produce shale oil and shale gas;
reacting the shale oil with an alkali metal and the shale gas obtained from the retorting step to produce upgraded shale oil, wherein the alkali metal is in the metallic state,
producing alkali metal sulfide and a solid material containing organic matter during the reacting step; and
producing power from the solid material for an electrolytic regeneration of the alkali metal from the alkali metal sulfide.
2. The method of claim 1 , wherein the shale gas comprises hydrogen sulfide and the hydrogen sulfide is consumed during the reacting step to produce hydrogen.
3. The method of claim 1 , further comprising
producing a solid material containing organic matter during the reacting step, and
burning the solid material as a fuel to provide heat during the retorting step.
4. The method of claim 1 , further comprising
producing a solid material containing organic matter during the reacting step, and,
feeding the solid material back into the retorting step as a feedstock.
5. The method of claim 1 , wherein the alkali metal is sodium metal.
6. The method of claim 1 , wherein the alkali metal is molten sodium metal.