Inhibition of reflective ash build-up in coal-fired furnaces
US6613110B2 · kind B2 · utility
45Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Feb 24, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L10/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method, for inhibiting accumulation of light-colored ash on the walls of a furnace in which coal containing high levels of (coal-bound) calcium is burned, comprises adding an iron compound to the coal prior to burning the coal, burning the coal, and producing calcium ferrite, thereby improving heat transfer in furnaces and resultant plant efficiency without adverse environmental consequences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.