(368d) Hydrogen Purification and Storage System Using Metal Hydride

This work is to develop a new hydrogen purification and storage system for daily start and stop operations. The new system enables us to minimize emissions of carbon dioxide by using compact and highly efficient fuel cells. The new system first removes carbon monoxide which is poisonous to metal hydride from reformed gas by using a special carbon monoxide adsorbent. And after removing carbon monoxide, the reformed gas is introduced into the metal hydride bed to purify and store hydrogen. The 100NL/h Laboratory scale apparatus has been operated by daily start and stop operations for 100 cycles for a total of 150 hours with quite good efficiency. The new process marks an 83% hydrogen recovery ratio in a one month long DSS operation.