Oxidation resistant granular activated carbon
US6425941B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Sep 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to an activated carbon composition that is resistant to oxidation and the activated carbon bed fires that can result from uncontrolled oxidation of the activated carbon bed. The activated carbon composition of the present invention includes from about 0.0001-25 wt. % of an antioxidant and from about 75-99.9999 wt. % activated carbon including any and all other impregnants and moisture. The presence of the antioxidant on the surface of the activated carbon inhibits uncontrolled oxidation and the activated carbon bed fires that can result. A method of removing solvents from a solvent-laden gas is also disclosed. The method includes passing the solvent-laden gas through an activated carbon bed, which contains the activated carbon composition described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.