Patent ID: 6481207
Filing Date: 2002-11-19
Classification: B01B,B01J,C01B,H01M,Y02E,Y02P

Abstract:
A single-pipe cylinder type reformer characterized by comprising an upright outer circular cylinder, a circular cylinder concentrically located inside said outer cylinder at a distance in a radial direction, a plurality of circular intermediate cylinders concentrically located between said outer cylinder and said inner cylinder at distances from each other in the radial direction, a circular radiation cylinder concentrically located inside said inner cylinder at a distance in the radial direction, a burner fixed to one end portion of said reformer in an axial direction to be located in the center of the radiation cylinder in the radial direction, and a plurality of annular flow paths formed in laminar shapes in the radial direction between said inner cylinder and the innermost intermediate cylinder, between said adjacent intermediate cylinders, and between the outermost intermediate cylinder and said outer cylinder, said annular flow paths being at least partly filled with a reforming catalyst serving as a reforming catalyst layer and communicating with each other, comprising:a heat recovery layer located in an annular flow path corresponding to an adjacent outer peripheral portion of said reforming catalyst layer so as to communicate with said reforming catalyst layer; a CO converter catalyst layer located in an annular flow path on an outer peripheral side of said heat recovery layer; a CO selective oxidizing catalyst layer and/or a second CO converter catalyst layer located in an annular flow path on an outer peripheral side of said CO converter catalyst layer so as to communicate with said CO converter catalyst layer; and a cooling fluid path which serves as a double annular flow path in the radial direction and allows a cooling fluid to pass, said cooling fluid path being formed by interposing one intermediate cylinder between said CO converter catalyst layer and said CO selective oxidizing catalyst layer and/or said second CO converter catalyst layer.