Noble gas purifier with single purifier vessel and recuperative heat exchanger
US5985007A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | May 9, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B23/0094
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and an apparatus for removing impurities from a noble gas or nitrogen utilizing a single purifier vessel having three zones. In the first zone, the gas is preheated to a temperature greater than 200.degree. C.; in the second zone, the preheated gas is contacted with a getter material at greater than 335.degree. C. for removal of impurities such as methane and other hydrocarbons, water, carbon monoxide, nitrogen, oxygen, and carbon dioxide; in the third zone, the gas is contacted with a second getter material at a temperature greater than 150.degree. C. for removal of hydrogen. Hot gas exiting the purifier vessel is passed through a recuperative heat exchanger where the hot exiting gas preheats in-coming gas before it enters the first zone of the purifier vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.