Hydrogen purification

Details Hydrogen purification Hydrogen purification

1994-04-21

1996-02-20

Langel, Wayne

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

422171, 423219, 423230, 4232391, 4232451, 423246, 423417, C01B 3118, C01G 104

Patent

active

054926823

ABSTRACT:
An improved apparatus and process for the removal of gaseous impurities from an impure gas stream of hydrogen contaminated with carbon monoxide, and with one or more additional impurities such as carbon dioxide, oxygen, nitrogen, water, methane.
The impure gas stream is first contacted with elemental nickel in a first reaction zone under nickel-carbonyl forming conditions thereby converting substantially all the carbon monoxide to nickel carbonyl, thereby producing a partially purified gas stream.
The partially purified gas stream is then contacted with Ti.sub.2 Ni or certain manganese-containing alloys in a second reaction zone to produce a fully purified gas stream.

REFERENCES:
patent: 2533138 (1950-12-01), Newton
patent: 4045541 (1977-08-01), Mercer
patent: 4075312 (1978-02-01), Tanaka et al.
patent: 4769225 (1988-09-01), Reilly et al.
Heimbach et al "Removal of Nitrogen and Methane from Hydrogen by Metal Getters", Fusion Technology, vol. 1, pp. 421-426 (no date available).
Albrecht et al "Applicatin of SAES & AWT Gas Purifiers . . . " J. Less Common Metals 172-174 (1991) 1157-1167.

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