Gases and the ensurance of extremely low levels of hydrogen
US5968468A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2210/0053
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus is described for the removal of impurity gases such as O.sub.2, CH.sub.4, CO, CO.sub.2 and H.sub.2 from impure inert gases such as rare gases and N.sub.2. The apparatus comprises an impure inert gas inlet, a housing containing first and second gas sorbing materials and a purified gas outlet. The first gas sorbing material may be a Zr--V--Fe getter alloy if the gas to be purified is a rare gas, whereas it may be a Zr--Fe alloy if the gas to be purified is N.sub.2. The second gas sorbing material is a Zr--Al alloy which ensures that the purified inert gas has an extremely low level of hydrogen. A process for the removal of impurity gases from inert gases and ensuring an extremely low level of hydrogen in the purified gas is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.