Process for the purification of inert gases
US5547652A · kind A · utility
7Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Mar 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2210/0068
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the purification of inert gases containing impurities of organic nature particularly of gas (nitrogen) coming from solid state polycondensation reactors or polyester resins including the gas treatment with the stoichiometric quantity (or slightly higher) of oxygen as regards the present impurities at a temperature between 250.degree. and 600.degree. C. by using Pt or Pt/Pd catalysts supported on a porous solid and the gas recycling directly to the polycondensation reactor before drying to eliminate the water produced during the reaction of impurities oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.