Abstract Computational modeling of pulverized coal fired boilers has made considerable advances in the past 5 decades. Modeling the furnace of a coal-fired boiler is a complex task. Even though bulk of the heat transfer to the furnace water walls is by radiation, it is complicated by the presence of ash and other tri-atomic gases that participate in radiation. It is also necessary to accurately capture the kinetics of the devolatilization, char combustion and volatile combustion processes. The phenomenon of fluid flow is equally important since considerable amount of turbulence is involved. Any model developed for the prediction of critical performance parameters like furnace outlet gas temperature and pollutant emission levels will need to capture this multifarious nature of combustion inside a boiler furnace. While computationally expensive CFD codes are available in plenty, researchers have also developed simpler but effective reactor network models. This review explains the current research position in the computational modeling of pulverized coal fired boilers from the following perspectives i) Coal combustion modeling ii) Radiation modeling iii) Overall furnace model development.

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煤粉锅炉的计算模型——现状回顾

摘要 煤粉锅炉的计算建模在过去 5 年中取得了长足的进步。对燃煤锅炉的炉膛进行建模是一项复杂的任务。尽管大部分热量传递到炉子水冷壁是通过辐射进行的，但由于灰分和其他参与辐射的三原子气体的存在，情况变得复杂。还需要准确捕捉脱挥发分、焦炭燃烧和挥发物燃烧过程的动力学。流体流动现象同样重要，因为涉及相当多的湍流。任何为预测关键性能参数（如炉膛出口气体温度和污染物排放水平）而开发的模型都需要捕捉锅炉炉膛内燃烧的这种多样性。虽然大量计算成本高昂的 CFD 代码可用，但研究人员还开发了更简单但有效的反应堆网络模型。本综述从以下角度解释了粉煤锅炉计算建模的当前研究地位 i) 煤燃烧建模 ii) 辐射建模 iii) 整体炉模型开发。