Method of capturing sulfur in coal during combustion and gasification
US4936047A · kind A · utility
65Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/0996
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of reducing the amount of gaseous sulfur compounds released during combustion of sulfur-containing fuel, comprising the steps of: (a) preparing a mixture of sulfur containing particulate fuel and a sulfur absorbent, such as calcium oxide, calcium hydroxide, calcium carbonate, lime, limestone, dolomite, or mixtures thereof; (b) exposing the mixture to a reducing atmosphere at a temperature of at least about 1500.degree. F., so as to convert at least a portion of the particulate fuel into a gaseous portion and a solid, char portion; and (c) combusting the char portion, thereby forming an ash containing sulfur fixed therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.