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Modeling and Simulation of Hydrodynamics and Filtration in a Membrane-Assisted Stirred Slurry Reactor
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-06-14 , DOI: 10.1002/ceat.202100068 Meizhong Qiu 1 , Yefei Liu 1 , Lei Xu 1 , Cong Wang 1 , Hong Jiang 1 , Rizhi Chen 1
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-06-14 , DOI: 10.1002/ceat.202100068 Meizhong Qiu 1 , Yefei Liu 1 , Lei Xu 1 , Cong Wang 1 , Hong Jiang 1 , Rizhi Chen 1
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A membrane-assisted stirred slurry reactor is developed by equipping a membrane tube into a stirred tank. Liquid-solid flow is simulated by the Euler-Lagrange method with filtration and particle deposition models. Acceptable predictions on the cake mass and particle deposition patterns are achieved by comparing with experimental data. The introduction of the membrane tube generates an asymmetric flow field. Shear stress on the membrane surface has a direct influence on the particle deposition. Increasing the impeller rotating speed leads to larger shear stress and mitigates the particle deposition. The cake mass is reduced by placing the membrane tube close to the impeller. The upward liquid flow pumped by the pitched-blade impeller results in low shear stress and the vertical-blade impeller is preferable.
中文翻译：
膜辅助搅拌浆液反应器中流体动力学和过滤的建模和模拟
膜辅助搅拌浆液反应器是通过在搅拌罐中安装膜管而发展起来的。液固流动是通过 Euler-Lagrange 方法用过滤和颗粒沉积模型模拟的。通过与实验数据进行比较，可以对饼块质量和颗粒沉积模式进行可接受的预测。膜管的引入产生了不对称的流场。膜表面的剪切应力对颗粒沉积有直接影响。提高叶轮转速会导致更大的剪切应力并减轻颗粒沉积。通过将膜管靠近叶轮放置来减少滤饼质量。斜叶叶轮泵送的液体向上流动导致低剪切应力，垂直叶叶轮是优选的。
更新日期：2021-08-20
中文翻译：
膜辅助搅拌浆液反应器中流体动力学和过滤的建模和模拟
膜辅助搅拌浆液反应器是通过在搅拌罐中安装膜管而发展起来的。液固流动是通过 Euler-Lagrange 方法用过滤和颗粒沉积模型模拟的。通过与实验数据进行比较，可以对饼块质量和颗粒沉积模式进行可接受的预测。膜管的引入产生了不对称的流场。膜表面的剪切应力对颗粒沉积有直接影响。提高叶轮转速会导致更大的剪切应力并减轻颗粒沉积。通过将膜管靠近叶轮放置来减少滤饼质量。斜叶叶轮泵送的液体向上流动导致低剪切应力，垂直叶叶轮是优选的。
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