Process for incinerating domestic refuse in a fluidized bed furnace
US5138958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Nov 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for incinerating domestic refuse is implemented in a boiler comprising a fluidized bed furnace over which is a post-combustion chamber. The smoke passes through alternately upward and downward paths in which it is cooled in contact with walls provided with water tubes. Limestone is injected into the bed to fix the sulfur oxides and halogenated compounds and a jet of powdered lime is injected at the start of the third path to neutralize the remaining halogenated compounds; the flying particles deposited are recycled into the furnace. The temperature of the bed is held between 800.degree. C. and 900.degree. C. and the injection of secondary air is adjusted to obtain an oxygen concentration in the smoke between 5.5% and 7.5% to minimize the formation of nitrogen oxides, dioxins and furans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.