Patent ID: 8353977
Filing Date: 2013-01-15
Classification: C01B

Abstract:
1. A hydrogen separator comprising: a vessel that has a raw material inlet for introducing a raw material fluid, a hydrogen outlet for discharging hydrogen selectively extracted from the raw material fluid, a residual raw material outlet for discharging the residual raw material fluid, and a fluid passage that connects the raw material inlet to the hydrogen outlet and the residual raw material outlet; and a selective hydrogen permeation section that is provided in the fluid passage to divide the fluid passage into a first passage that is connected to the raw material inlet and the residual raw material outlet and a second passage that is connected to the hydrogen outlet, and includes a selective hydrogen permeable metal membrane that selectively allows hydrogen contained in the raw material fluid to pass through, the selective hydrogen permeation section selectively allowing hydrogen to pass through from the first passage to the second passage through the selective hydrogen permeable metal membrane, an iron-containing metal surface that is exposed in the first passage and forms at least part of the first passage and a member disposed in the first passage that is at least partially covered with an iron component scattering prevention film at least in an area positioned on an upstream side with respect to a downstream end of a permeable section of the selective hydrogen permeable metal membrane in a flow direction of the fluid that flows through the first passage, wherein a part of the second passage connecting to the hydrogen outlet is covered with a joint including the iron containing metal surface and has an iron component scattering prevention film on at least a surface facing toward the raw material inlet.