Purification of raw hydrogen

Details Purification of raw hydrogen Purification of raw hydrogen

C - Chemistry, Metallurgy

01

B

C01B 3/52 (2006.01) B01D 53/14 (2006.01) B01D 53/58 (2006.01) B01D 53/68 (2006.01) B01D 53/70 (2006.01) C01B 3/54 (2006.01)

Patent

CA 2632022

Method and system for removing impurities such as chlorine, chloramines, and ammonia from a hydrogen gas. One embodiment of the invention provides for passing the hydrogen gas through a first scrubbing unit having a reducing agent in solution to at least partially remove chlorine and chloramines from the hydrogen gas. The hydrogen gas may be passed from the first scrubbing unit through a second scrubbing unit having an acid in solution to at least partially remove ammonia from the hydrogen gas.

La présente invention concerne un procédé et un système d'élimination des impuretés telles que le chlore, les chloramines et l'ammoniaque d'un gaz hydrogène. Dans un mode de réalisation, l'invention consiste à faire passer le gaz hydrogène à travers une première unité d'épuration possédant un agent de réduction de solution de façon à éliminer au moins partiellement le chlore et les chloramines de ce gaz hydrogène. Le gaz hydrogène peut-être passé de la première unité d'épuration à travers une seconde unité d'épuration possédant un acide en solution de façon à éliminer au moins partiellement l'ammoniac de ce gaz hydrogène.

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