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외부 순환식 Air-Lift 기포탑에서의 액체의 흐름특성

The Flow Characteristics of Liquid in an Air-Lift Bubble Column with an External Recirculation

권선길 함영민 도동섭

Kwon SG Hahm YM Doh DS

HWAHAK KONGHAK, October 1982, 20(5), 335-342(8), NONE

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Abstract

외부 순환을 동반한 Air-lift 기포탑에서 액체높이 및 기체유속을 변수로 하여 액체의 흐름특성을 규명하였다. 혼합시간 및 순환시간을 정의하고 이들을 Peclet 수와 관련지었다. Peclet수는 혼합시간과 순환시간과의 비가 증가함에 따라 또 탑내 액체의 높이와 탑높이와의 비가 증가함에 따라 증가하였으며 그 관계는 다음과 같은 식으로 표시할 수 있다.
P_e = 23.25（T_M/T_C）^0.13 (h/H)^2.19

The flow characteristics of liquid was investigated in an air-lift bubble column with an external recirculation of liquid. The Peclet number was correlated in terms of the defined mixing and circulation times. The Peclet number increased with increasing the ratio of mixing time to circulation time and of liquid height to column height. The relationship could be expressed by the following correlation:
P_e = 23.25（T_M/T_C）^0.13 (h/H)^2.19

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