Radiation enhancement in oil/coal boilers converted to natural gas
US5048433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Sep 12, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D17/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coal-gas fuel composition, for use in furnaces and boilers which have been converted from oil or coal to natural gas, an apparatus and a method for burning said composition are disclosed. Conversions of oil or coal designed boilers to natural gas for environmental compliance can lead to an inbalance between radiative and convective heat transfer in the boiler. Co-firing natural gas with specially processed coal slurries can enhance the infrared radiation from the natural gas flame and help restore the balance intended in the original boiler design, without greatly decreasing the environmental performance of the boiler or furnace. Disclosed is a fuel composition comprising optimal ranges and proportions of constituent fuels, including a slurry comprising about 35% micronized additive, such as coal, and 65% No. 2 fuel oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.