GAS HOLD-UP, LIQUID CIRCULATION AND GAS-LIQUID MASS-TRANSFER IN SLURRY BUBBLE-COLUMNS

被引：0

作者：

GAVROY, D ^{[1
]}

JOLYVUILLEMIN, C ^{[1
]}

CORDIER, G ^{[1
]}

DELMAS, H ^{[1
]}

机构：

[1] RHONE POULENC,CNRS,UMR 45,F-69153 DECINES CHARPIEU,FRANCE

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 1995年 / 73卷 / A6期

关键词：

BUBBLE COLUMN; HYDRODYNAMICS; GAS HOLD-UP; MASS TRANSFER; HYDROGENATION; CATALYST LOADING;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hydrodynamic experiments have been performed with a small transparent piece of equipment. with and without an internal draft tube, operated at atmospheric pressure and room temperature. The effects of many parameters have been analysed separately: the role of the draft tube with various liquid phases (water, water-ethanol mixture and the reaction solvent) at various catalyst loadings. The overall gas hold-up is slightly reduced in the gas-lift operation, when compared to the simple bubble column. When varying the gas flow rate, the characteristic maximum of gas hold-up is only observed without the draft tube and for the ethanol-water mixture and the reaction solvent. The volumetric mass transfer coefficient has been determined in a very similar stainless steel reactor under pressure by two independent ways: a physical determination measuring dissolved hydrogen concentration variation with time and a chemical determination using a complete continuous reactor model including accurate reaction kinetics.

引用

页码：637 / 642

页数：6

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