Evaluation of Separation Efficiency in a Tubular Bowl Centrifuge,Chemical Engineering & Technology

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Evaluation of Separation Efficiency in a Tubular Bowl Centrifuge
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-10 , DOI: 10.1002/ceat.202100055
Sumayabanu Patan ₁ , Satish K. Velaga ₂ , V. S. Sanapala ₂ , K. Ananthasivan ₂

Affiliation

Centrifugal sedimentation, a well-known solid-liquid separation process, is typically used for the separation of solids from low concentration feeds because of its high separation efficiency due to high settling velocities. The performance of the tubular bowl centrifuge (TBC) can be studied by using the sigma theory, which assumes plug flow and rigid body motion inside the rotating bowl wall. The separation efficiency of the system is evaluated by determining the effective fluid layer thickness from the experimental data. A method suitable for evaluating the separation efficiency at different parameters for a given TBC is explained along with experimental validation. By using this method, different case studies are performed which depict the influence of each parameter on the separation efficiency. Also, it is demonstrated that the same higher separation efficiency (98 %) at 20 000 rpm could be achieved at higher bowl capacities.

中文翻译：

管状碗离心机分离效率的评估

离心沉降是一种众所周知的固液分离工艺，由于沉降速度快，分离效率高，因此通常用于从低浓度进料中分离固体。管式转筒离心机 (TBC) 的性能可以通过使用 sigma 理论来研究，该理论假设旋转转筒壁内的活塞流和刚体运动。通过从实验数据确定有效流体层厚度来评估系统的分离效率。解释了一种适用于评估给定 TBC 在不同参数下的分离效率的方法以及实验验证。通过使用这种方法，进行了不同的案例研究，描述了每个参数对分离效率的影响。还，

更新日期：2022-02-10

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