The static and dynamic holdups of liquid slag flow in a packed coke bed were investigated at a temperature of 1723 K by using the three-dimensional combined discrete element method and a computational fluid dynamics model. Coke particles with three different diameters (8, 14, and 22 mm) were considered. The simulation results for the static holdup agreed well with previously reported experimental results and the prediction values suggested by Jang et al . The simulation results for the dynamic holdup were compared with the values predicted using several water-model-based correlations. The simulation results for the dynamic holdup were slightly lower than the values predicted using the Fukutake model and the Otake and Okada model and were significantly higher than those predicted using the model proposed by Bando et al . The summation of the static and the dynamic holdups yielded the total holdup. With the increase of the modified capillary number (or particle size), the total holdup decreased monotonically, mainly owing to the considerable decrease in the static holdup.

中文翻译：

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焦炭颗粒固定填充床渣流特性

使用三维组合离散元方法和计算流体动力学模型研究了在 1723 K 温度下填充焦床中液态渣流的静态和动态滞留量。考虑了三种不同直径（8、14 和 22 毫米）的焦炭颗粒。静态滞留率的模拟结果与先前报道的实验结果和 Jang 等人建议的预测值非常吻合。动态滞留率的模拟结果与使用几种基于水模型的相关性预测的值进行了比较。动态滞留率的模拟结果略低于使用 Fukutake 模型和 Otake 和 Okada 模型的预测值，显着高于使用 Bando 等人提出的模型预测的值。静态和动态滞留量的总和产生总滞留量。随着改性毛细管数（或粒径）的增加，总持率单调下降，主要是由于静态持率显着下降。