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윤장효,염경호,김우식,김원규 연세대학교 대학원 1986 延世論叢 Vol.22 No.1
The dynamic characteristics and mass transfer effects in Para-type plate pulsed column was investigated. The axial dispersion coefficient of continuous phase was constant in the range above that continuous phase flow rate was 200ml/min, and was more influnced by amplitude than by frequency. The hold-up of continuous phase was more influnced by amplitude and saunter mean diameter was more influnced by frequency. As the experimental results of acetone extraction, the column efficiency was slightly decreased with the pulse velocity increased, but was stabilized in the range of 80~90%. The acetone concentration profiles with the change of column height at steady state more approached to the backflow model than the diffusion model.
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Para 형 다단맥동 추출탑의 유동특성과 물질전달(1)
김우식,염경호,윤장효 한국화학공학회 1986 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.24 No.5
연속상의 나선형 흐름경로가 있는 para형 다단맥동 추출탑의 유동특성 및 물질전달 효과에 관하여 실험하였다. 실험결과, 연속상의 축방향 혼합계수 및 분산상 체류량은 맥동속도보다 연속상 및 분산상의 유속변화에 각각 더 영향을 받았다. 아세톤 추출실험 결과, 탑효율은 맥동속도의 변화에 관계없이 0.8∼0.9 정도로 안정하였으며, 연속상에서의 아세톤 농도분포는 확산모델보다 역혼합모델에 더 근접하였다. The hydrodynamic and mass transfer characteristics in the para-type plate pulse column was investigated. The axial dispersion coefficients of continuous phase and the hold-up of dispersed phase were more influenced by the continuous and dispersed phase velocity than by the pulse velocity respectively. As the experimental results of acetone extraction, the column efficiency slightly decreased with the increase of pulse velocity, but the efficiency was stabilized in the range of 80-90%. And the acetone concentration profiles at steady state approached to the backflow model.
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