Mathematical Model and Simulation of a Thermal Diffusion Column

2003 ◽  
Vol 125 (2) ◽  
pp. 266-273 ◽  
Author(s):  
Juan E. Vela´squez ◽  
Farid Chejne ◽  
Alan F. J. Hill
Keyword(s):  
Mathematical Model ◽  
Temperature Gradient ◽  
Thermal Diffusion ◽  
Thermal Gradient ◽  
Gas Mixture ◽  
Two Dimensional ◽  
Model And Simulation ◽  
Total Reflux ◽  
Diffusion Column ◽  
Composition Profiles

A two-dimensional mathematical model, in stationary state was developed for the separation of species in a thermal diffusion column working with total reflux. The model was applied to a gas mixture of CO2 and N2. The existence of convective currents along the column was verified, the separation of species due to the temperature gradient was predicted and the effect of the thermal gradient and of the operation pressures on the composition profiles was analyzed.

scholarly journals Separation of Gas Mixture by Packed Thermal Diffusion Column

1975 ◽  
Vol 1 (1) ◽  
pp. 20-26
Author(s):  
Takao Kokugan ◽  
Masaru Shimizu
Keyword(s):  
Thermal Diffusion ◽  
Gas Mixture ◽  
Diffusion Column

scholarly journals SEPARATION OF GAS MIXTURE BY MOVING-WALLS THERMAL DIFFUSION COLUMN

1976 ◽  
Vol 9 (5) ◽  
pp. 411-413
Author(s):  
TAKAO KOKUGAN ◽  
HITOSHI YOSHIDA ◽  
MASARU SHIMIZU
Keyword(s):  
Thermal Diffusion ◽  
Gas Mixture ◽  
Diffusion Column

Thermal Diffusion in Mixtures of Alcohols and Aromatic Hydrocarbons

1971 ◽  
Vol 26 (1) ◽  
pp. 48-51 ◽  
Author(s):  
P. S. Belton ◽  
H. J. V. Tyrrell
Keyword(s):  
Temperature Gradient ◽  
Thermal Diffusion ◽  
Aromatic Hydrocarbons ◽  
Thermal Gradient ◽  
Average Degree ◽  
Quantitative Interpretation ◽  
Mean Temperature ◽  
The Mean ◽  
Degree Of Association

Abstract The thermal diffusion factors observed for these systems vary considerably with concentration, and frequently show a change in sign at some concentration. New data on ethanol-toluene mixtures show that the sign and magnitude of the separation of the components in a thermal gradient are also strongly dependent on the mean temperature of the system. These observations, together with earlier ones on similar systems, can be given a semi-quantitative interpretation in terms of a shift in the average degree of association of the alcohol along the temperature gradient.

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