Anode exhaust gas methanation to enhance carbon dioxide capture

摘要

The fuel cell power production system is a flue gas generator configured to generate flue gas comprising carbon dioxide and oxygen, a fuel supply unit, and a fuel cell assembly, wherein the flue gas generator A cathode unit configured to receive the generated flue gas and output a cathode exhaust, and a fuel configured to receive fuel from the fuel supply unit and output an anode exhaust including hydrogen and carbon dioxide. A methanation unit configured to receive an anode portion, the anode exhaust, convert at least a portion of the hydrogen in the anode exhaust to methane, and exhaust a methanized anode exhaust; A cooler assembly configured to cool the anode exhaust to a predetermined temperature to liquefy carbon dioxide in the methanized anode exhaust Receives the anode exhaust that is the methanated said cooled, and a fuel cell assembly including a configured gas separation assembly so as to separate the liquefied carbon dioxide from the residual fuel gas. [Selected figure] Figure 1B