TY - JOUR
T1 - Liquid holdup distribution in packed columns
T2 - Gamma ray tomography and CFD simulation
AU - Yin, Fuhe
AU - Afacan, Artin
AU - Nandakumar, K.
AU - Chuang, Karl T.
N1 - Funding Information:
The authors are grateful to The Natural Science and Engineering Research Council of Canada for funding the project.
PY - 2002
Y1 - 2002
N2 - In the present study, the liquid (water) holdup distribution was measured in a large scale packed column (0.6 m diameter) filled with 25.4 mm metal Pall rings using noninvasive gamma ray tomography technique. Horizontal scans, at two vertical positions (400 mm apart), were made for two liquid flow rates. Three different designs of liquid distributor were used to examine the effect of inlet liquid distribution on holdup distribution inside the column. A tomographic reconstruction algorithm was used to calculate the spatial variation of liquid holdup over the column cross section. It was found that the liquid holdup distribution was not uniform and that the liquid distributor design had a significant effect on the holdup distribution. To simulate the liquid holdup distribution in a packed column, a set of volume averaged equations for the hydrodynamics has been solved with the commercial computational fluid dynamics (CFD) software, CFX4.2. Simulation results were found to agree with the experimental data.
AB - In the present study, the liquid (water) holdup distribution was measured in a large scale packed column (0.6 m diameter) filled with 25.4 mm metal Pall rings using noninvasive gamma ray tomography technique. Horizontal scans, at two vertical positions (400 mm apart), were made for two liquid flow rates. Three different designs of liquid distributor were used to examine the effect of inlet liquid distribution on holdup distribution inside the column. A tomographic reconstruction algorithm was used to calculate the spatial variation of liquid holdup over the column cross section. It was found that the liquid holdup distribution was not uniform and that the liquid distributor design had a significant effect on the holdup distribution. To simulate the liquid holdup distribution in a packed column, a set of volume averaged equations for the hydrodynamics has been solved with the commercial computational fluid dynamics (CFD) software, CFX4.2. Simulation results were found to agree with the experimental data.
KW - Flow distribution
KW - Gamma-ray
KW - Liquid holdup distribution
KW - Packed beds
UR - http://www.scopus.com/inward/record.url?scp=0036008401&partnerID=8YFLogxK
U2 - 10.1016/S0255-2701(01)00167-2
DO - 10.1016/S0255-2701(01)00167-2
M3 - 文章
AN - SCOPUS:0036008401
SN - 0255-2701
VL - 41
SP - 473
EP - 483
JO - Chemical Engineering and Processing - Process Intensification
JF - Chemical Engineering and Processing - Process Intensification
IS - 5
ER -