Pelletized fixed sulfur fuel
US4259085A · kind A · utility
7Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1978 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Apr 24, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L5/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fixed sulfur fuel is produced by proportioning sulfur-bearing coal and limestone in amounts which will cause the calcium in the limestone to react with a large amount of sulfur in the coal. The proportioned mixture is ground and blended and then balled or compacted to form pellets. By means of either a carbonizing or pyrolyzing technique conducted in a traveling grate machine, where the pellets are heated to at least 800.degree. F., the coal is pyrolyzed or carbonized, the limestone is calcined, and the sulfur is fixed in a calcium compound which remains stable in the ash after the pellets are burned as a fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.