Geometry-based model for predicting mass transfer in packed columns

TY - JOUR

T1 - Geometry-based model for predicting mass transfer in packed columns

AU - Wen, X.

AU - Afacan, A.

AU - Nandakumar, K.

AU - Chuang, K. T.

PY - 2003/10/15

Y1 - 2003/10/15

N2 - We have extended our previous work on the modeling of geometry, liquid trickle flow, and pressure drop to study the mass-transfer process in a packed column. On the basis of the penetration theory and the detailed information of lateral and axial variations in packing geometry and fluid dynamics from our previous models, a predictive mass-transfer model has been developed on the scale much smaller than a packing particle in the case of random packings or a flow channel in the case of structured packings. Distillation experiments have been carried out with methanol/2-propanol and methanol/water for 16 mm metal Pall rings. The model has been validated with the experimental results and our previous data on a novel vertical-sheet structured packing. Simulations for uniform and uneven initial distributions have been carried out, which showed a strong influence of liquid-flow distribution on mass-transfer efficiency in a packed column.

AB - We have extended our previous work on the modeling of geometry, liquid trickle flow, and pressure drop to study the mass-transfer process in a packed column. On the basis of the penetration theory and the detailed information of lateral and axial variations in packing geometry and fluid dynamics from our previous models, a predictive mass-transfer model has been developed on the scale much smaller than a packing particle in the case of random packings or a flow channel in the case of structured packings. Distillation experiments have been carried out with methanol/2-propanol and methanol/water for 16 mm metal Pall rings. The model has been validated with the experimental results and our previous data on a novel vertical-sheet structured packing. Simulations for uniform and uneven initial distributions have been carried out, which showed a strong influence of liquid-flow distribution on mass-transfer efficiency in a packed column.

UR - http://www.scopus.com/inward/record.url?scp=0142070766&partnerID=8YFLogxK

U2 - 10.1021/ie030347l

DO - 10.1021/ie030347l

M3 - 文章

AN - SCOPUS:0142070766

SN - 0888-5885

VL - 42

SP - 5373

EP - 5382

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 21

ER -