Patent ID: 8591718

Claim:
A method of producing a carbon monoxide containing product comprising: applying an electric potential to cathode and anode sides of an electrically driven oxygen separation device having an electrolyte situated between the cathode and anode sides that is capable of transporting oxygen ions through the electrolyte from the cathode side to the anode side upon the application of the electric potential and at an operational temperature of the electrolyte; contacting the cathode side of the electrically driven oxygen separation device with a carbon dioxide containing feed stream, thereby to reduce the carbon dioxide to the carbon monoxide through ionization of oxygen at the cathode side and the transporting of the oxygen ions to an anode side of the electrically driven oxygen separation device; contacting the anode side of the electrically driven oxygen separation device with a reducing agent stream containing a reducing agent to lower partial pressure of transported oxygen at the anode side of the electrically driven oxygen separation device produced by the transporting of the oxygen ions and thereby to partially drive the transporting of the oxygen ions through consumption of the transported oxygen and reduce voltage and therefore, electrical power required to be applied to the device and to supply heat to the device for purposes of heating the device to the operational temperature at which the oxygen ion transport can occur and to the reduction of the carbon dioxide occurring at the cathode side; withdrawing a product stream comprising the carbon monoxide from the cathode side of the device; withdrawing a reacted stream from the anode side composed of a reaction product produced by reaction of the reducing agent with the transported oxygen at the anode side; and preheating the reducing agent stream and the carbon dioxide containing feed stream through indirect heat exchange with at least part of the product stream and at least part of the reacted stream.