Patent ID: 7131272

Claim:
A reduced carbon dioxide emissions method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the method comprising: a) cooling an air stream in a stand-alone cooler to a temperature below about 20° C. to produce a cooled air stream; b) supplying a cooled inlet air stream to at least one light hydrocarbon gas-fired turbine; c) compressing a refrigerant in a plurality of compressors driven by a plurality of light hydrocarbon gas-fired turbines fueled by the cooled inlet air stream and a fuel gas stream with the turbines producing an exhaust stream at an elevated temperature; d) producing steam at an elevated temperature and pressure by heat exchange with the exhaust stream; e) driving a steam turbine with the steam from d) to produce mechanical power; and, f) driving an electrical power generator with the mechanical power from e) to produce electrical power for use in the light hydrocarbon gas liquefaction process.