Computational Fluid Dynamics (CFD) Analysis of Cyclone Separators Connected in Series

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• 作者：Atilano Antô ; nio Vegini ; Henry Fran&ccedil ; a Meier ; Joã ; o Jaime Iess ; Milton Mori
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2008
• 出版时间：January 2, 2008
• 年：2008
• 卷：47
• 期：1
• 页码：192 - 200
• 全文大小：283K
• 年卷期：v.47,no.1(January 2, 2008)
• ISSN：1520-5045

文摘

Cyclone separators are very useful equipment for particle removal from gaseous streams. Their simple designand low capital and maintenance costs have made cyclones one of the most widely used gas-solid separators.Their dynamic behavior includes several phenomena, such as vortex breakdown, reversal of flow, and highturbulence intensity. Prediction of pressure drop and collection efficiency over a temperature range of severalhundred degrees with a high solids loading flow and different cyclone dimensions is very difficult withsimplified models. In this work, a model that is based on computational fluid dynamics (CFD) techniques isused to verify the performance of cyclone separators connected in series; this collection of separators iscalled a cyclone tower. The model is based on the Eulerian-Eulerian approach, and it is composed of severaltime differential equations in a two-dimensional (2-D) space domain with a three-dimensional (3-D) symmetriccyclone inlet. The model is solved using the finite volume method with staggered grids. The results on collectionefficiency and pressure drop of an experimental study were used to validate the proposed model. After validationof the model, it was possible to examine the performance of the cyclone separators through a comparison ofthe numerical results and information obtained in the cement industry.