Hydrodynamics of a three-phase external-loop airlift bioreactor

被引：55

作者：

Freitas, C

Fialová, M

Zahradnik, J

Teixeira, JA

机构：

[1] Univ Minho, IBQF, Ctr Engn Biol, P-4710057 Braga, Portugal

[2] Acad Sci Czech Republ, Inst Chem Proc Fundamentals, CR-16502 Prague 6, Czech Republic

来源：

CHEMICAL ENGINEERING SCIENCE | 2000年 / 55卷 / 21期

关键词：

multiphase reactor; hydrodynamics; mathematical model; distributing plate; solid phase;

D O I：

10.1016/S0009-2509(00)00130-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of the distributing plate orifice diameter, airflow rate, solids loading and solids density on the hydrodynamic characteristics - gas holdup, circulation time and liquid velocity - of a three-phase external-loop airlift reactor was characterized. It was observed that the gas distributor has a small effect on riser gas holdup, circulation time and downcomer liquid velocity. On the contrary, the airflow rate, solids loading and solids density significantly affect the hydrodynamic characteristics of the external-loop airlift reactor. A previously described model was used to estimate simultaneously both the riser gas holdup and the downcomer linear liquid velocity. The model simulated with high-accuracy experimental data obtained with three different distributing plate orifice diameters, two solids density and solids loading up to 30% (v/v). (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：4961 / 4972

页数：12

共 24 条

[1] FLOW CHARACTERISTICS OF 3-PHASE FLUIDIZED-BED WITH DRAFT TUBE - EFFECT OF OUTER COLUMN DIAMETER AND DETERMINATION OF GAS-LIQUID INTERFACIAL AREA [J].