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Title: Method of thermally-stabilizing an oxygen transport membrane-based reforming system

Patent ·
OSTI ID:1493314

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.

Research Organization:
Praxair, Inc., Danbury, CT (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-07NT43088
Assignee:
PRAXAIR TECHNOLOGY, INC. (Danbury, CT)
Patent Number(s):
10,118,823
Application Number:
14/969,486
OSTI ID:
1493314
Resource Relation:
Patent File Date: 2015 Dec 15
Country of Publication:
United States
Language:
English

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