Volatilization and Burning of Pulverized Coal, with Radiation Heat Transfer Effects, in a Counter Flow Combustor
Volatilization and Burning of Pulverized Coal, with Radiation Heat Transfer Effects, in a Counter Flow Combustor
复制标题
逆流燃烧室中具有辐射传热效应的煤粉挥发和燃烧
DOI：
10.1080/00102208908924018
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发表时间：
1989
影响因子：
1.9
通讯作者：
Y. Goldman
中科院分区：
文献类型：
--
作者：
J. Greenberg;Y. Goldman
摘要对先进逆流燃烧室中煤粉燃烧进行了详细的理论与实验结合分析。煤颗粒的理论模型可以跟踪其大小演变。包括脱挥发和焦化反应的影响，以及与煤颗粒、周围介质和燃烧室壁面之间的辐射传热。辐射计算采用分区法。气体环境和粒子之间的相互作用是基于理论和/或实验数据的。在逆流燃烧室中对气相进行的测量包括温度、压力、成分和速度。还监测了粒径分布、灰分和挥发物含量，以便与理论预测进行比较。结果表明，在所考虑的配置下，燃烧效率的最佳颗粒尺寸在40 ~ 60 μm之间。进一步控制效率是可以实现的。
Abstract A detailed combined experimental-theoretical analysis of pulverized coal combustion in an advanced counter flow combustor is presented. The theoretical model for the coal particles enables their size evolution to be tracked. Effects of devolatilization and char reaction are included, as well as radiative heat transfer to and from coal particles, the surrounding medium and combustor walls. A zoning method is used for the radiation calculations. The interaction between the gaseous surroundings and the particles is based on theoretical and/or experimental data. Measurements made in the counterflow combustor for the gaseous phase included temperature, pressure, composition and velocity. Particle size distribution, ash and volatile matter content were also monitored for comparison with the theoretical predictions. The results indicate that, for the configuration considered, optimal particle sizes for combustion efficiency lie within the range of about 40-60 μm. Further control of efficiency can be obt...