Hydrodynamics and Mass-Transfer Analysis of a Distillation Ripple Tray by Computational Fluid Dynamics Simulation

被引：22

作者：

Jiang, Bin ^{[1
,2
]}

Liu, Pengfei ^{[1
]}

Zhang, Luhong ^{[1
]}

Sun, Yongli ^{[1
,2
]}

Wang, Huajin ^{[1
]}

Liu, Yuhua ^{[3
]}

Fang, Zhao ^{[3
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Natl Engn Res Ctr Distillat Technol, Tianjin 300072, Peoples R China

[3] Peiyang Natl Distillat Technol Corp Ltd Co, Tianjin, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 49期

关键词：

DUALFLOW TRAYS; SIEVE TRAYS; COLUMNS; LIQUID; MODEL; GAS; PREDICTION; EFFICIENCY; VALVE;

D O I：

10.1021/ie402822w

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A 3D two-phase computational fluid dynamics model in the Eulerian-Eulerian framework was developed to predict the hydrodynamics, mass-transfer behaviors, and tray efficiency of dual-flow trays: ripple trays. Interaction between the two phases occurs via interphase momentum and mass transfer. Mass-transfer coefficients were estimated using the Higbie penetration theory model. The simulated results were compared with the experimental data obtained from distillation of cyclohexane and n-heptane at total reflux. The results show that vapor and liquid flow countercurrently through the tray holes and four main hydrodynamic regimes are distinguished at different vapor/liquid loadings (F-s factor). It was found that the mass transfer of the spray zone above the froth was also significant, especially at lower loadings. In addition, the results indicated that the efficiency of a ripple tray was a strong function of the open hole area and F-s factor.

引用

页码：17618 / 17626

页数：9

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