Patent ID: 6835482
Filing Date: 2004-12-28
Classification: B01B,B01J,C01B,H01M,Y02E,Y02P

Abstract:
A fuel reforming apparatus for a polymer electrolyte membrane fuel cell, comprising:a reformer capable of taking out a reforming gas containing carbon monoxide, which can be obtained by a reforming reaction carried out by allowing a mixed fuel prepared by mixing a reforming fuel with steam to flow through a reforming catalyst layer, to the outside and having an arcuate surface formed in at least a part of the outer circumferential surface thereof; and a carbon monoxide reformer concentrically arranged on the circumferential surface having an arcuate surface of the reformer for taking in carbon monoxide coming from the reformer so as to lower the carbon monoxide concentration by an aqueous gas shift reaction, wherein the carbon monoxide reformer comprises a cooling device for cooling the inlet gas of the carbon monoxide converter, a first stage carbon monoxide converting catalyst layer, an intermediate cooling device for the carbon monoxide converting catalyst layer, and a second stage carbon monoxide converting catalyst layer, which are concentrically arranged such that the reforming gas coming from the reformer flows through the first stage carbon monoxide converting catalyst layer, the intermediate cooling device for the carbon monoxide converting catalyst layer, and the second stage carbon monoxide converting catalyst layer in the order mentioned.