Mass transfer between a moving gas stream and single particles of some important sorbents for sulphur dioxide

1981 ◽  
Vol 46 (1) ◽  
pp. 72-78
Author(s):  
Miloslav Hartman ◽  
Karel Svoboda
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Sodium Carbonate ◽  
Sulphur Dioxide ◽  
Mass Transfer Resistance ◽  
Single Particles ◽  
Active Sodium ◽  
Simple Analysis ◽  
Transfer Resistance ◽  
Very High

For the particles of calcium oxide and active sodium carbonate an effect of mass transfer is explored on the overall rate of their reactions with sulphur dioxide. The results of a simple analysis show that the mass transfer resistance in the gas phase cannot be neglected. The extraordinary reactivity of active sodium carbonate can be fully utilized only in such contactors where very high rates of mass transfer are ensured.

Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower

1987 ◽  
Vol 109 (2) ◽  
pp. 89-93 ◽  
Author(s):  
P. Gandhidasan ◽  
M. Rifat Ullah ◽  
C. F. Kettleborough
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Heat And Mass Transfer ◽  
Packing Material ◽  
Mass Transfer Resistance ◽  
Liquid Desiccant ◽  
Governing Equations ◽  
Packed Tower ◽  
Transfer Resistance ◽  
Steady State Model

Heat and mass transfer analysis between a desiccant-air contact system in a packed tower has been studied in application to air dehumidification employing liquid desiccant, namely calcium chloride. Ceramic 2 in. Raschig rings are used as the packing material. To predict the tower performance, a steady-state model which considers the heat and mass transfer resistances of the gas phase and the mass transfer resistance of the liquid phase is developed. The governing equations are solved on a digital computer to simulate the performance of the tower. The various parameters such as the effect of liquid concentration and temperature, air temperature and humidity and the rates of flow of air and liquid affecting the tower performance have been discussed.

Gas-phase mass-transfer resistance at PEMFC electrodes

2006 ◽  
Vol 158 (1) ◽  
pp. 206-212 ◽  
Author(s):  
E. Arato ◽  
M. Pinna ◽  
P. Costa
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Mass Transfer Resistance ◽  
Transfer Resistance
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