Process for removing sulfur from coal
US4097244A · kind A · utility
12Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1976 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Dec 13, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for reducing the sulfur content of coal comprising the steps of: PA1 1. contacting coal particles with an aqueous solution of iron complexing agent, and an oxidant to preferentially oxidize at least a portion of the sulfur in the coal; PA1 2. thermally treating the oxidized sulfur-containing coal at elevated temperature to reduce the sulfur content of the coal; and PA1 3. recovering coal particles of reduced sulfur content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.