Modeling of Bubble Column Reactor in up Gradation of Waste Calcium Carbonate using Carbonation Process

Abstract

The kinetics of absorption of lean CO2 in a suspension of lime is studied in 8.0 cm. i.d. bubble column. The various variable studies are height to diameter ratio (h/d) , superficial gas velocity of mixture of CO2 –air. The final optimal experimental condition are done by employing height to diameter ratio (h/d) equal to 6, superficial gas velocity (Vg) equal to 10.Under this experimental conditions, required particle size of less than 10μm of calcium carbonate is obtained. A mathematical model for absorption of CO2 has been used to predict interfacial area and liquid- side mass transfer coefficient KL is found out by using Experimental Ra absorption of CO2 and interfacial area. The liquid- side mass transfer coefficient in bubble column reactor is determined and found to be 0.21*10-2 cm/ sec.