HYDROCARBON FUEL TREATING APPARATUS

摘要

A double counter-current flow hydrocarbon fuel reformer utilizes a combustion catalyst and incorporates a high temperature shift reactor for improved thermal and spatial efficiency. Use of a combustion catalyst results in more efficient fuel usage, less fuel consumption, and eliminates the need for firebrick within the combustion chamber. Incorporation of a shift reactor into the reformer enables performance of a portion of the shift reaction within the reformer and serves to improve heat transfer from the reformed gas into the reformation reaction chamber, further reducing fuel consumption and more rapidly lowering the product gas temperature into the range in which the shift reaction is favored. About 30-40% of the shift reaction can be performed within the shift reaction chamber of the integrated reformer, enabling the size of the external shift reaction device to be reduced proportionately. This integrated fuel reformer/shift reactor is ideally suited for use in a pressurized phosphoric acid fuel cell system.