Effect of liquid circulation in the draft-tube reactor on precipitation of calcium carbonate via carbonation |
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Authors: | Donata Konopacka-?yskawa Zbigniew Cisiak Bo?enna Kawalec-Pietrenko |
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Affiliation: | Gdańsk University of Technology, Chemical Faculty, Department of Chemical and Process Engineering, Narutowicza 11/12 80-952 Gdańsk, Poland |
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Abstract: | Precipitation of calcium carbonate was carried out in a draft-tube reactor by mechanical agitation of calcium hydroxide solution with carbon dioxide. The circulation of a reactive mixture was created by gas flow and a stirrer. It was observed that a higher circulation decreased the precipitation time and improved CO2 consumption. A higher circulation velocity of liquid contributed to smaller calcium carbonate particles at the end of precipitation. |
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Keywords: | Calcium carbonate Precipitation Carbonation process Liquid circulation |
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