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충진기포탑에서의 축방향혼합과 물질전달에 관한 연구

Mass Transfer and Axial Dispersion in a Packed Bubble Column

HWAHAK KONGHAK, August 1977, 15(4), 241-248(8), NONE
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Abstract

원통형 금망을 충진한 충진기포탑에서 impulseresponse technique을 적용하여 측정한 액체의 축방향 분산계수와 물질전달과의 관계를 규명하였다. 이때, 액상으로는 증류수를, 기상으로는 CO2와 공기의 혼합기체를 사용하였다. 연구결과에 의하면 물질전달계수는 기체유속과 축방향 분산계수가 증가함에 따라 증가하였으며, 그 관계는 다음과 같은 식으로 표시 할수 있다.
KαL = 0.036 Vg0.76D2.22
Mass transfer characteristics were investigated in a counter-current bubble column packed with cylindrical screen rings and correlated with the axial dispersion coefficient measured by an impulse response technique. Absorption of CO2 by water in the column was used for this investigation. The volumetric coefficient of liquid phase mass transfer was found to increase with increasing superficial gas velocity and axial dispersion coefficient of liquid. The relationship could be expressed by the following correlation:
KαL = 0.036 Vg0.76D2.22

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