Hydrogen purifier, hydrogen generation apparatus, and fuel cell system

Patent metadata

Field	Value
Publication number	US-9634344-B2
Application number	US-201314384376-A
Country	US
Kind code	B2
Filing date	Mar 7, 2013
Priority date	Apr 6, 2012
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A hydrogen purifier includes: a CO remover configured to reduce carbon monoxide in a hydrogen-containing gas through an oxidation reaction, the hydrogen-containing gas containing ammonia and carbon monoxide; and an ammonia remover provided upstream from the CO remover, the ammonia remover being configured to cause a reaction between ammonia in the hydrogen-containing gas and oxygen by using a catalyst to decompose the ammonia.

First claim

The invention claimed is:

1. A hydrogen purifier comprising:
a CO remover that reduces carbon monoxide in a hydrogen-containing gas through an oxidation reaction, the hydrogen-containing gas containing ammonia and carbon monoxide;
an ammonia remover provided upstream from the CO remover and that causes a reaction between ammonia in the hydrogen-containing gas and oxygen by using a catalyst to decompose the ammonia;
an oxygen-containing gas supply device;
a first passage, through which an oxygen-containing gas from the oxygen-containing gas supply device is supplied to the ammonia remover; and
a second passage, through which the oxygen-containing gas is supplied to the CO remover.

2. The hydrogen purifier according to claim 1 , wherein the catalyst contains a transition metal as a catalyst metal.

3. The hydrogen purifier according to claim 2 , wherein the transition metal is Ni.

4. The hydrogen purifier according to claim 1 , comprising a shift converter configured to reduce carbon monoxide in the hydrogen-containing gas through a shift reaction, wherein
the ammonia remover is provided downstream from the shift converter.

5. A hydrogen generation apparatus comprising:
the hydrogen purifier according to claim 1 ; and
a reformer configured to generate the hydrogen-containing gas by using a reaction gas containing a raw material gas, wherein
the reaction gas contains at least one of a nitrogen gas and a nitrogen-containing compound.

6. A fuel cell system comprising:
the hydrogen generation apparatus according to claim 5 ; and
a fuel cell configured to generate electric power by using the hydrogen-containing gas that is supplied from the hydrogen generation apparatus.

Assignees

• Panasonic Corp
• Panasonic Ip Man Co Ltd

Inventors

• Kusuyama Takahiro
• Wakita Hidenobu
• Harada Chie
• Fujihara Seiji
• Nakajima Tomoyuki

Classifications

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• H01M8/0662

  Treatment of gaseous reactants or gaseous residues, e.g. cleaning · CPC title

• Y02B90/18

  Cross-Sectional Technologies · mapped topic

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2250/30

  Fuel cells in portable systems, e.g. mobile phone, laptop · CPC title