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METHOD OF THERMALLY-STABILIZING AN OXYGEN TRANSPORT MEMBRANE-BASED REFORMING SYSTEM

United States Patent Application

20170166445
A1
View the Complete Application at the US Patent & Trademark Office
A method of operating an oxygen transport membrane based reforming system employing one or more packs of thermally coupled panels of reformer tubes and oxygen transport membrane ("OTM") reactors close to thermo-neutral point is provided. The method produces syngas by converting a hydrocarbon-containing feed, such as natural gas in the reformer tubes of a pack by endothermic steam reforming reactions. The heat required for endothermic reforming reactions is provided by exothermic oxidizing reactions occurring inside the OTM reactors of the pack. At a thermo-neutral point the heat released by exothermic reactions matches the heat required to support endothermic reactions and heat losses in the pack. The method modulates the flow rate of hydrocarbon-containing feed and/or steam-to-carbon ratio of the combined feed to the pack to maintain the surface temperature of oxygen transport membrane reactors below a target maximum temperature. The syngas product oxygen-to-carbon ratio is maintained within a desired target range such that the OTM based reforming system is operated close to thermo-neutral point.
Kelly, Sean M. (Pittsford, NY), Swami, Sadashiv M. (Tonawanda, NY), Peck, John D. (West Seneca, NY)
14/ 969,486
December 15, 2015
U.S. GOVERNMENT RIGHTS [0001] The invention disclosed and claimed herein was made with United States Government support under Cooperative Agreement number DE-FC26-07NT43088 awarded by the U.S. Department of Energy. The United States Government has certain rights in this invention.