Method and apparatus for reducing NOx emissions in the incineration of tail gas
US9192891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Nov 28, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2258/0283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for control of NOx emission in the incineration of tail gas are provided wherein tail gas that comprises NOx, NOx precursors, or both is introduced into a combustor and diluent is introduced into the combustor for controlling the combustor temperature to a temperature of from about 950° C. to about 1100° C. Methods also are provided for reducing NOx emissions by controlling air-to-fuel ratio in a tail gas combustor while controlling the combustor flame temperature through diluent injections. A boiler unit for carrying out these methods also is provided. A system for carbon black production using the boiler unit also is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.