Patent ID: 9614241
Date: 2017-04-04
CPC Classifications: C01B,H01M,Y02E

Claim:
1. A hydrogen purifier comprising: a shift conversion catalyst which is disposed on an upstream gas passage of the hydrogen purifier and includes at least one selected from the group of consisting of Pt and Cu—Zn based catalyst, and reduces, through a shift reaction, an amount of carbon monoxide contained in a hydrogen-containing gas; a methanation catalyst which is disposed on a portion of the upstream gas passage downstream of the shift conversion catalyst and includes at least one selected from the group of consisting of Ru, Rh and Ni, and reduces, through a methanation reaction, an amount of carbon monoxide contained in the hydrogen-containing gas that has passed through the shift conversion catalyst; a water passage; and a downstream gas passage which is disposed downstream of the upstream gas passage and through which the hydrogen-containing gas that has passed through the methanation catalyst flows, wherein: the shift conversion catalyst and the methanation catalyst are heat exchangeable with each other through a first partition wall, the upstream gas passage is bent such that a first flow direction of the hydrogen-containing gas that passes through the shift conversion catalyst is opposite to a second flow direction of the hydrogen-containing gas that passes through the methanation catalyst, the hydrogen-containing gas flowing through the downstream gas passage is heat exchangeable, through a third partition wall, with water flowing through the water passage, the methanation catalyst is heat exchangeable with the downstream gas passage through a second partition wall and heat exchangeable, through the downstream gas passage, with the water flowing through the water passage, the second partition wall being disposed between the methanation catalyst and the downstream gas passage, and along a line cutting the shift conversion catalyst, the first partition wall, the methanation catalyst, the second partition wall, the gas passage, the third partition wall, and the water passage in a cross section of the hydrogen purifier, the shift conversion catalyst, the first partition wall, the methanation catalyst, the second partition wall, the downstream gas passage, the third partition wall, and the water passage are arranged in this order, the line being perpendicular to the first and second partition walls.