HYDROGEN SEPARATOR

To provide a hydrogen separator restraining occurrence of crimp on the surface of hydrogen permeation membrane or of crack and break of the edge of hydrogen separation membrane at a hydrogen permeation examination using non-palladium metal as a constitutive metal of the hydrogen permeation membrane to enable recycle.SOLUTION: In a hydrogen separator, a hydrogen permeation membrane 50 having a central part whose surface is formed flatly and a periphery part whose surface has an uneven shape is pinched by the primary and secondary side gaskets 40 and 42, and the thickness of the secondary side gasket 42 is made to be in a range of 2.2 to 3.8 times of a maximum vertical interval in the uneven shape of the periphery part of the hydrogen permeation membrane 50. Alternatively, the hydrogen permeation membrane 50 having the central part whose surface is formed flatly and the periphery part whose surface has an uneven shape parts is pinched by the primary and secondary side gaskets 40 and 42, and a porous support medium 52 which has the central part whose surface is formed flatly and the periphery part having the uneven shape formed on the surface to fit with the uneven shape of the periphery part of the membrane 50 is disposed at the secondary side of the hydrogen permeation membrane 50.SELECTED DRAWING: Figure 4 【課題】水素透過膜の構成金属として非パラジウム金属を用い、水素透過膜表面の皺や、水素透過試験を行った際の水素分離膜端部の亀裂や破壊を抑制し、再利用することができる水素分離装置の提供。【解決手段】表面が平坦状に形成された中央部と、表面に凹凸形状を有する外周部とを有している水素透過膜５０を、一次側ガスケット４０及び二次側ガスケット４２で挟持し、二次側ガスケット４２の厚みを水素透過膜５０の外周部が有する凹凸形状の最大高低差の２．２〜３．８倍とする。あるいは、表面が平坦状に形成された中央部と、表面に凹凸形状を有する外周部とを有している水素透過膜５０を、一次側ガスケット４０及び二次側ガスケット４２で挟持し、水素透過膜５０の二次側に、表面が平坦状に形成された中央部と、表面に水素透過膜５０の外周部が有する凹凸形状と嵌合するように形成された凹凸形状を有する外周部とを有する多孔質の支持体５２を配置する。【選択図】図４