Method and apparatus for burning solid waste products using a plurality of multiple hearth furnaces
US4679268A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 11, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Sep 11, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23G5/28
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Method and apparatus for incinerating low density organic materials using a pair of side by side multiple hearth furnaces are disclosed. The first furnace of the pair operates in a temperature-controlled reducing atmosphere to achieve complete volatilization of non-fixed carbon contained in the fuel feed stock. The second furnace operates in a temperature-controlled oxidizing atmosphere to achieve complete oxidation of all fixed-carbon contained in the char output of the first furnace. The gaseous products of both furnaces are combined and burned in a low - Btu gas burner, thus providing the heat input to a power boiler or other process suited to the heat quality produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.