Gas-lift circulation of a liquid between two inter-connected bubble columns

被引：4

作者：

Jafarian, Mehdi ^{[1
]}

Chisti, Yusuf ^{[2
]}

Nathan, Graham J. ^{[1
]}

机构：

[1] Univ Adelaide, Ctr Energy Technol, Sch Mech Engn, Adelaide, SA 5005, Australia

[2] Massey Univ, Sch Engn, Private Bag 11 222, Palmerston North, New Zealand

来源：

CHEMICAL ENGINEERING SCIENCE | 2020年 / 218卷

基金：

澳大利亚研究理事会;

关键词：

Airlift reactor; Bubble column; Chemical looping; Two-phase flow; Gas holdup; CHEMICAL LOOPING GASIFICATION; FLOW REGIME TRANSITION; SIZE DISTRIBUTIONS; HOLDUP; PERFORMANCE; OXIDE; COMBUSTION; REACTORS; DESIGN;

D O I：

10.1016/j.ces.2020.115574

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A pneumatically-mixed novel configuration of two inter-connected bubble column reactors is reported using air-water to demonstrate the device, enabling circulation of a liquid between the columns solely by a gas-lift mechanism. The new reactor may be used for circulating a high temperature/corrosive liquid between the columns, enabling the cyclical processing of a liquid medium with two different gaseous reactants. The effects of superficial gas velocity, unaerated liquid height in the columns and the diameter of aeration nozzles are discussed with reference to the gas holdup in, and rate of liquid circulation between, the two columns, together with the energetics of circulation. The height of the gas-free liquid in the reactor was found to influence the liquid circulation velocity positively, but the effect of aeration nozzles diameter was marginal. The lowest and highest measured flow rates of circulating water between the columns were 0.7 dm(3) min(-1) and 4.2 dm(3) min(-1), respectively. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

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