Method for burning coal using oxygen in a recycled flue gas stream for carbon dioxide capture
US8505496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2007 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | May 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/34
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of introducing oxygen into a boiler system for combustion with a prepared fuel in a furnace combustion chamber comprises providing a plurality of swirl-inducing elements to the air stream delivery lines, and a plurality of oxygen delivery jets adjacent the intake region and substantially surrounding the air stream delivery lines; igniting the fuel gas to create a flame; and delivering a stream of oxygen through the jets tangentially to the flame envelope to substantially shape and stabilize a swirling flow field for the flame, the oxygen concentration in the flame envelope gradually increasing towards an outer periphery of the flame envelope. A boiler system for using the method can be a new system or a retrofit to an existing system. The method and system provide advantages in reduced environmental impact and increased efficiency while addressing the safety factors involved in introducing oxygen to boiler systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.