Modeling of reactive dispersed flows with interfacial mass transfer limitations require an accurate description of the interfacial area, mass transfer coefficient and the driving force. The driving force is given by the difference in species composition between the continuous and dispersed phases and thus depends on bubble size. This paper shows the extension of the multifluid-PBE model to reactive and non-isothermal flows with novel transport equations for species mass and temperature which are continuous functions of bubble size. The model is demonstrated by simulating the Fischer-Tropsch synthesis operated in a slurry bubble column at industrial conditions. The simulation results show different composition and velocity for the smallest and largest bubbles. The temperature profile was independent of bubble size due to efficient heat exchange. The proposed model is particularly useful in investigating the effects of bubble size on strongly mass transfer limited processes operated in the heterogeneous flow regime.

具有界面传质限制的反应性分散流建模需要对界面面积，传质系数和驱动力进行准确描述。驱动力由连续相和分散相之间的物种组成差异决定，因此取决于气泡大小。本文展示了多流体-PBE模型对反应性和非等温流动的扩展，具有新颖的物质质量和温度传输方程，这些方程是气泡尺寸的连续函数。通过模拟在工业条件下在浆液鼓泡塔中进行的费-托合成，证明了该模型。仿真结果表明，最小和最大气泡的组成和速度不同。由于有效的热交换，温度曲线与气泡尺寸无关。