Patent ID: 8114916

Claim:
A method for producing hydrocarbon compounds comprising, a) generating hydrogen gas from water in an electrolyzer b) feeding carbon dioxide gas and at least a portion of said hydrogen gas to a reverse water gas shift reactor to generate a gaseous stream including at least water steam and syngas as a mixture of hydrogen gas and carbon monoxide gas, wherein b1) said reverse water gas shift reactor comprises serially connected reactors, b2) water steam is separated between and after said serially connected reactors, c) feeding a Fischer-Tropsch reactor with said syngas effluent from the reverse water gas reactor to generate hydrocarbon compounds, and d) a temperature of a gas in the method is changed at least near adiabatically and/or a pressure of a gas in the method is changed at least near isothermally with the temperature being increased/decreased at least near adiabatically by compressing/expanding an incoming gas in a compressor/expander with using/generating electrical energy from/to an electric power line such that involved heat energy is less than 10% of the used/generated electrical energy and the pressure is increased/decreased at least near isothermally by compressing/expanding an incoming gas in a compressor/expander with using/generating electrical energy from/to an electric power line and cooling/heating to compressed/expanded gas with delivering heat to/taking heat from a heat distribution line such that the absolute temperature ° K of the processed gas deviates less than 10% from the absolute temperature ° K of the incoming gas.