Process for activating carbonaceous material
US4107084A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Dec 6, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/336
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is disclosed an improved process for activating carbon in a fluidized bed system which includes continuous activation at a temperature between 1,000.degree. F. and 2,200.degree. F. using a specific composition of fluidizing gases. The thermal energy required to activate the carbon and to maintain the bed temperatures is transferred only in part by the sensible heat of the fluidizing gases. The fluidizing gases contain excess oxygen, which reacts exothermically with the products of the activation reaction and contributes heat necessary to maintain the bed temperatures. The improved process may also entail introducing secondary excess air above the bed to react exothermically with products evolved from the reactions occurring within the bed to provide additional heat to drive the activation reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.