Numerical and Experimental Study of Catalyst Loading and Body Effects on a Gas-Liquid Trickle-Flow Bed

被引：9

作者：

Salimi, Maryam ^{[1
]}

Hashemabadi, S. Hassan ^{[1
]}

Noroozi, Sooran ^{[1
]}

Heidari, Amir ^{[1
]}

Bazmi, Mansour ^{[2
]}

机构：

[1] Iran Univ Sci & Technol, Sch Chem Engn, Computat Fluid Dynam Res Lab, Tehran 1311416846, Iran

[2] Res Inst Petr Ind, Tehran, Iran

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2013年 / 36卷 / 01期

关键词：

Computational fluid dynamics; Dynamic liquid holdup; Multiphase flows; Trickle-bed reactor; Trilobe catalysts; PRESSURE-DROP; HEAT-TRANSFER; MULTIPHASE FLOW; FLUID-DYNAMICS; REACTORS; CFD; HYDRODYNAMICS; HOLDUP; SIMULATIONS; PREDICTION;

D O I：

10.1002/ceat.201200339

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The influence of tortuosity and fluid volume fractions on trickle-flow bed performance was analyzed. Hydrodynamics of the gas-liquid downward flow through trickle beds, filled with industrial trilobe catalysts, were investigated experimentally and numerically. The pressure drop and liquid holdup were measured at different gas and liquid velocities and in two different loading methods, namely, sock and dense catalyst loading. The effect of sharp corners on hydrodynamic parameters was considered in a bed with rectangular cross section. The reactor was simulated, considering a three-phase model, appropriate porosity function, and interfacial forces based on the Eulerian-Eulerian approach. Computational fluid dynamics (CFD) simulation results for pressure drop and liquid holdup agreed well with experimental data. Finally, the velocity distribution in two types of loading and the effect of bed geometry in CFD results demonstrated that pressure drop and liquid holdup were reduced compared to a cylindrical one due to high voidage at sharp corners.

引用

页码：43 / 52

页数：10

共 38 条

[11] Multiphase catalytic reactors: A perspective on current knowledge and future trends [J].

Dudukovic, MP ;

Larachi, F ;

Mills, PL .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2002, 44 (01) :123-246

[12] Hydrodynamics of trickle-bed reactors: Experiments and CFD modeling [J].

Gunjal, PR ;

Kashid, MN ;

Ranade, VV ;

Chaudhari, RV .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (16) :6278-6294

[13] Modeling of laboratory and commercial scale hydro-proces sing reactors using CFD [J].

Gunjal, Prashant R. ;

Ranade, Vivek V. .

CHEMICAL ENGINEERING SCIENCE, 2007, 62 (18-20) :5512-5526

[14] A PHENOMENOLOGICAL MODEL FOR PRESSURE-DROP, LIQUID HOLDUP, AND FLOW REGIME TRANSITION IN GAS-LIQUID TRICKLE FLOW [J].

HOLUB, RA ;

DUDUKOVIC, MP ;

RAMACHANDRAN, PA .

CHEMICAL ENGINEERING SCIENCE, 1992, 47 (9-11) :2343-2348

[15] CFD of multiphase flow in packed-bed reactors:: I.: k-fluid modeling issues [J].

Jiang, Y ;

Khadilkar, MR ;

Al-Dahhan, MH ;

Dudukovic, AP .

AICHE JOURNAL, 2002, 48 (04) :701-715

[16] CFD of multiphase flow in packed-bed reactors: II. Results and applications [J].

Jiang, Y ;

Khadilkar, MR ;

Al-Dahhan, MH ;

Dudukovic, MP .

AICHE JOURNAL, 2002, 48 (04) :716-730

[17] CFD modeling of multiphase flow distribution in catalytic packed bed reactors: scale down issues [J].

Jiang, Y ;

Khadilkar, MR ;

Al-Dahhan, MH ;

Dudukovic, MP .

CATALYSIS TODAY, 2001, 66 (2-4) :209-218

[18] CFD modeling of radial spreading of flow in trickle-bed reactors due to mechanical and capillary dispersion [J].

Lappalainen, Katja ;

Manninen, Mikko ;

Alopaeus, Ville .

CHEMICAL ENGINEERING SCIENCE, 2009, 64 (02) :207-218

[19] EXPERIMENTAL-STUDY OF A TRICKLE-BED REACTOR OPERATING AT HIGH-PRESSURE - 2-PHASE PRESSURE-DROP AND LIQUID SATURATION [J].

LARACHI, F ;

LAURENT, A ;

MIDOUX, N ;

WILD, G .

CHEMICAL ENGINEERING SCIENCE, 1991, 46 (5-6) :1233-1246

[20] Discriminating trickle-flow hydrodynamic models: Some recommendations [J].

Larachi, F ;

Iliuta, I ;

Al-Dahhan, MA ;

Dudukovic, MP .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (02) :554-556

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