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HWAHAK KONGHAK,
Vol.31, No.5, 521-528, 1993
Vol.31, No.5, 521-528, 1993
이중관 기포탑내에서 CMC수용액중의 기액간 물질전달
Mass Transfer between Gas and Liquid through CMC Solutions in a Bubble Column with a Draught Tube
흡출관이 내장된 기포탑내에서 기체체류량 εg와 용량액상물질전달계수 KLa를 비뉴특류인 CMC수용액의 농도, 기체속도, 흡출관의 직경 및 높이에 따라 실험하였다. 기체체류량εg는 용액의 농도감소와 흡출관의 직경비가 증가함에 따라 증가하고 흡출관의 높이에는 무관하였다. 용얄액상물질전달계수 KLa는 용액의 농도와 흡출관의 높이비가 증가함에 따라 감소하며 흡출관의 직경비에는 무관하였다. 기체체류량εg와 용량액상물질전달계수 KLa에 대한 무차원식이 실험의 결과로부터 제안되었다.
The gas holdup εg and volumetric liquid-phase mass transfer coefficient KLa in a bubble colum with a draught tube were studied experimentally with variation of the concentration of CMC solutions, gas velcoity and diameter and height of the draught tube. The gas holdup εg increased with decreasing concentra-tion of CMC solutions and increasing the diameter ratio of the draught tube to column diameter but was not affected by H/HT. The volumetric liquid-phase mass transfer coefficient KLa decreased with increasing concentration of CMC solutions and the height ratio of the draught tube to column height but was not affected by the diameter ratio of the draught tube to column diameter. Dimensionless equations of the gas holdup εg and the volumetric liquid-phase mass transfer coefficient KLa were proposed from the experimental results.
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