Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

This paper reports an investigation of Computational Fluid Dynamics（CFD）on the influence of injection momentum rate of premixed air and fuel on the flameless Moderate or Intense Low oxygen Dilution（MILD） combustion in a recuperative furnace.Details of the furnace flow velocity,temperature,O2,CO2 and...

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Bibliographic Details
Published in:Chinese journal of chemical engineering 2010-02, Vol.18 (1), p.10-17
Main Author: 米建春 李鹏飞 郑楚光
Format: Article
Language:English
Subjects:
Carbon dioxide
Chemical engineering
Combustion
Computational fluid dynamics
flameless oxidation
Flues
Furnaces
Mathematical models
numerical simulation
premixed combustion
Recuperative furnaces
数值模拟
无火焰
燃烧炉
计算流体动力学
预混合燃烧
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Summary:This paper reports an investigation of Computational Fluid Dynamics（CFD）on the influence of injection momentum rate of premixed air and fuel on the flameless Moderate or Intense Low oxygen Dilution（MILD） combustion in a recuperative furnace.Details of the furnace flow velocity,temperature,O2,CO2 and NOx concentrations are provided.Results obtained suggest that the flue gas recirculation plays a vital role in establishing the premixed MILD combustion.It is also revealed that there is a critical momentum rate of the fuel-air mixture below which MILD combustion does not occur.Moreover,the momentum rate appears to have less significant influence on conventional global combustion than on MILD combustion.
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(08)60316-X