LIQUID CIRCULATION IN BUBBLE COLUMN WITH DRAUGHT TUBE

Kozo KOIDE; MOTOHIKO KIMURA; HIDEKAZU NITTA; HIROKAZU KAWABATA

doi:10.1252/jcej.21.393

Kozo KOIDE, MOTOHIKO KIMURA, HIDEKAZU NITTA, HIROKAZU KAWABATA

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Keywords: Fluid Mechanics, Bubble Column, Draught Tube, Circulating Liquid Flow, Gas Holdup, Chemical Reactor

JOURNAL FREE ACCESS

1988 Volume 21 Issue 4 Pages 393-399

DOI https://doi.org/10.1252/jcej.21.393

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Abstract

The flow rate Q_L of circulating liquid was measured by the heat-pulse method. It was found that QL increased with increasing liquid viscosity. In a h''quid where bubble coalescence was not hindered, the gas holdup in the annulus decreased and therefore Q_L increased.
Empirical equations for gas holdups in the draught tube and the pressure drop due to flow reversals, necessary for estimating Q_L, were proposed.

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