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Modeling of Slurry Bubble‐Column Reactors with Emphasis on the Importance of Bubble Size Estimation
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-12-15 , DOI: 10.1002/ceat.202000231 Elham Dorostkar 1 , Mohammad Hasan Khademi 1 , Amir Rahimi 1
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-12-15 , DOI: 10.1002/ceat.202000231 Elham Dorostkar 1 , Mohammad Hasan Khademi 1 , Amir Rahimi 1
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A mathematical model entitled varying‐bubble model (V‐BM) was adapted to simulate a slurry bubble‐column reactor, operating in a churn‐turbulent regime, based on an axial‐dispersion model. This model was theoretically able to estimate the size of forming bubbles at the sparger, variations of each chemical species and catalyst concentration, pressure drop in both gas and liquid phases, change in size and rising velocity of bubbles, as well as gas holdup and specific gas‐liquid interfacial area along the reactor axis. A comparison between the V‐BM and single‐bubble model (S‐BM) indicates that the V‐BM is better compatible with the experimental data. The results demonstrate that the contribution of mass transfer is much more than the pressure drop in increasing the size of the bubble along the reactor.
中文翻译：
着重于气泡大小估计重要性的浆液鼓泡塔反应器建模
在轴向分散模型的基础上，采用了名为可变气泡模型（V-BM）的数学模型来模拟在搅拌湍流状态下运行的浆液气泡-柱反应器。该模型在理论上能够估算喷头处形成的气泡的大小，每种化学物质和催化剂浓度的变化，气相和液相中的压降，气泡的大小和上升速度的变化以及气体滞留率和比重沿反应器轴线的气液界面面积。V-BM和单气泡模型（S-BM）之间的比较表明，V-BM与实验数据更好地兼容。结果表明，传质的贡献远大于增加沿反应器的气泡尺寸时的压降。
更新日期：2021-02-19
中文翻译：
着重于气泡大小估计重要性的浆液鼓泡塔反应器建模
在轴向分散模型的基础上，采用了名为可变气泡模型（V-BM）的数学模型来模拟在搅拌湍流状态下运行的浆液气泡-柱反应器。该模型在理论上能够估算喷头处形成的气泡的大小，每种化学物质和催化剂浓度的变化，气相和液相中的压降，气泡的大小和上升速度的变化以及气体滞留率和比重沿反应器轴线的气液界面面积。V-BM和单气泡模型（S-BM）之间的比较表明，V-BM与实验数据更好地兼容。结果表明，传质的贡献远大于增加沿反应器的气泡尺寸时的压降。
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