Hydrogen extraction unit

摘要

A hydrogen extraction unit (10) has reformed gas flow channel plates (30), hydrogen separation plates (40), and purge gas flow channel plates (50), which are designed as thin metal plate members. The hydrogen extraction unit (10) is constructed by laminating these thin plate members and then bonding them together by diffusion bonding. Each of reformed gas flow channel holes (32) formed in the reformed gas flow channel plates (30) constitutes a flow channel for reformed gas together with a correspondingly adjacent one of the hydrogen separation plates (40). Each of purge gas flow channel holes (54) formed in the purge gas flow channel plates (50) constitutes, together with a correspondingly adjacent one of the hydrogen separation plates (40), a flow channel for purge gas with which hydrogen extracted from reformed gas is mixed.