Process for the purification of hydrogen
US5558844A · kind A · utility
6Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/0495
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided which is capable of removing impurities from an impurity-containing hydrogen gas without generating methane. A bed of particulate nickel in an amount of at least 5% by weight as elemental nickel at a temperature of from 0.degree. C. to 50.degree. C. removes all impurities except nitrogen. Then a bed of getter material, a zirconium, vanadium and iron alloy at a temperature of from 200.degree. C. to 500.degree. C. removes the nitrogen impurity thus producing purified hydrogen with an impurity content of less that 20 ppb. A purifier for carrying out the process is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.