Aiming at developing low-pollution burners, the effect of inlet blocking on NO formation in a swirling coal combustor is numerically studied. An algebraic unified second-order moment turbulence-chemistry model of NO formation, a simplified Solomon model of HCN release are proposed. Together with a full two-fluid model of coal combustion. Those models are used in numerical simulation. The predicted temperature, turbulence intensity, coal concentration and NO concentration are obtained. The prediction results for typical cases are in good agreement with the experimental results reported in references. The effect of inlet blocking position and sizes are studied. The results indicate that the blocking between the primary-air flow and the secondary-air flow can remarkably reduce the NO formation.
|Number of pages||5|
|Journal||Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering|
|Publication status||Published - Sept 2003|
- Coal combustor
- NO formation