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논문 기본 정보

자료유형
학술저널
저자정보
Lim, Dae Ho (Department of Chemical Engineering, Chungnam National University) Yoo, Dong Jun (Department of Chemical Engineering, Chungnam National University) Kang, Yong (Department of Chemical Engineering, Chungnam National University)
저널정보
한국화학공학회 화학공학 화학공학 제53권 제3호
발행연도
2015.1
수록면
315 - 320 (6page)

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Characteristics of gas-liquid mass transfer and interfacial area were investigated in a bubble column of diameter and height of 0.102 m and 2.5 m, respectively. Effects of gas and liquid velocities on the volumetric gas-liquid mass transfer coefficient ($k_La$), interfacial area (a) and liquid side true mass transfer coefficient ($k_L$) were examined. The interfacial area and volumetric gas-liquid mass transfer coefficient were determined directly by adopting the simultaneous physical desorption of $O_2$ and chemical absorption of $CO_2$ in the column. The values of $k_La$ and a increased with increasing gas velocity but decreased with increasing liquid velocity in the bubble column which was operated in the churn turbulent flow regime. The value of $k_L$ increased with increasing gas velocity but did not change considerably with increasing liquid velocity. The liquid side mass transfer was found to be related closely to the liquid circulation as well as the effective contacting frequency between the bubbles and liquid phases.

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