Method and system for producing a supercritical cryogenic fuel (SCCF)

A method for producing a fuel comprising:

• providing a hydrogen gas comprising hydrogen;
• providing a hydrocarbon fluid comprising a hydrocarbon;
• placing selected mass flow rates of the hydrogen gas and the hydrocarbon fluid at a pressure above a critical pressure of the hydrocarbon;
• converting the hydrocarbon fluid to a supercritical hydrocarbon fluid by placing the hydrocarbon fluid at a temperature below or approximately equal to a critical temperature of the hydrocarbon and above a boiling temperature of the hydrocarbon;
• and
• mixing the hydrogen gas and the supercritical hydrocarbon fluid to dissolve the hydrogen gas into the supercritical hydrocarbon fluid.

A method for producing a fuel comprising:

• providing a hydrogen gas comprising hydrogen;
• providing a methane fluid comprising methane;
• placing a mixture of the hydrogen gas and the methane fluid having a composition ratio of from about 2% to 3% mass fraction of the hydrogen gas in the methane fluid at a pressure of from about 900 psia to 1015 psia;
• placing the mixture at a temperature of about −115° F. (−46° C.) to −120° F. (−50° C.) such that the methane fluid forms a supercritical methane fluid;
• and
• mixing the hydrogen gas and the supercritical methane fluid to dissolve the hydrogen gas into the supercritical methane fluid.