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SIMPLIFIED SOLOMON PYROLYSIS MODEL AND SIMULATION OF NO FORMATION IN SWIRLING COAL COMBUSTION

ZHANG Yu;ZHOU Lixing;ZHANG Jian

  

  • Online:2003-09-25 Published:2003-09-25

简化的Solomon热解模型和旋流煤粉燃烧NO生成的数值模拟

张宇;周力行;张健   

  1. 清华大学工程力学系、煤的清洁燃烧国家重点实验室,北京100084

Abstract: A simplified Solomon pyrolysis model for simulating HCN release in NO formation during coal combustion is proposed. A full two-fluid model together with the k-ε-kp two-phase turbulence model, the EBU-Arrhenius combustion model, the six-flux radiation model, and two different HCN release models are used to simulate gas-particle flows, coal combustion, HCN release and NO formation in a swirl burner. Comparison of predictions with experimental results taken from references indicates that the HCN release model based on the simplified Solomon pyrolysis model is better than the original HCN release model based on the two-equation pyrolysis model.

摘要: 提出一种简化的Solomon热解模型, 用于模拟煤粉燃烧NO生成数值模拟中HCN的释放.用纯双流体模型、k-ε-kp两相湍流模型、EBU-Arrhenius燃烧模型、六热流辐射模型、双方程热解模型、简化的Solomon热解模型以及NO生成湍流反应二阶矩代数模型对旋流煤粉燃烧器内两相流动、煤粉燃烧、HCN释放以及NO生成进行了数值模拟.模拟结果与文献中实验结果的对比表明,基于简化Solomon热解模型的HCN释放模型预报结果比基于双方程热解模型的HCN释放模型预报结果好.