Single stage denitration
US6280694A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Oct 20, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system and method is described having a single reaction vessel using superheated steam optionally augmented by oxygen for reducing nitrogen oxides present in a wide variety of organic compounds. Reduction takes place quickly when a steam/oxygen mixture is injected into a fluidized bed of ceramic beads. Reducing additives are metered into the reaction vessel and/or provide energy input to reduce nitrates to nitrogen. The speed of the fluidizing gas mixture agitates the beads that then help to break up solid wastes and to allow self-cleaning through abrasion thereby eliminating agglomerates, and the oxygen, when used, allows for some oxidation of waste by-products and provides an additional offset for thermal requirements of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.