Modeling and Experimental Set-up

Simultaneous execution of reactive absorption and granulation is the most recent application of the liquid-sprayed gas-solid fluidized bed. Hence, although no models have been published for the computation and interpretation of such a process, several different models describing subprocesses are available. Indeed, the absorption of spray drops has been the subject of many investigations over several years. 

Danckwerts [16] showed, on the basis of the absorption of sulfur dioxide in water and of carbon dioxide in solution, that absorption increases by dissociation processes. 

The effect of solid particles in the gas-liquid phase boundary on absorption was investigated by Ramachandran and Sharma [74], who showed the absorption process to be strengthened by chemical reaction between the absorbed component and the solid in solution. 

Uchida and Wen [92] also proposed a mathematical model for absorption by dividing the concentration profiles of the absorbed gas and migration of the solid into solution in six classical cases, including the boundary conditions. 

Sada et al. [79] experimented with stirred vessels to determine the absorption of CO2 and SO2 in calcium hydroxide suspensions, and found their results to be comparable with others [74, 92]. These authors concluded that an increase in the solid 

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Two applications of the above model and experimental set-up are described below. 

Guedes de Carvalho et al. developed a mathematical model for this physical situation and compared the predictions of the model with the concentration curves at the outlet of the column, following a step change in tracer concentration at the inlet. For more details of both mathematical model and experimental set-up and procedure, the original work should be consulted [7],... 

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