Effect of calcium based additives on the sodium bicarbonate crystallization in a MSMPR reactor

Abstract : The objective of this work was to study the impact of calcium ions addition on the crystallization of sodium bicarbonate during the reaction of sodium carbonate with carbon dioxide in aqueous solutions. A continuous MSMPR (Mixed Suspension Mixed Product Removal) reactor for the production of sodium bicarbonate was developed, built and tested at pilot scale. This experimental set-up was used to study the impact of process parameters and the effect of calcium based additives on the quality of the NaHCO3 crystals obtained. The nucleation and crystal growth rates were determined from the experimental population density distribution when the steady state was reached. Experiments have firstly shown that the addition of calcium ions greatly reduced the nucleation rate. In contrast, the addition of calcium ions had little impact on crystal growth rate in the temperature range between 70 degrees C and 80 degrees C.
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Article dans une revue
Powder Technology, Elsevier, 2014, 255 (SI), pp.134-140. 〈10.1016/j.powtec.2013.08.009〉
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https://hal.univ-lorraine.fr/hal-01275922
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Soumis le : jeudi 18 février 2016 - 14:59:39
Dernière modification le : jeudi 11 janvier 2018 - 06:25:27

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Antoine Gerard, Hervé Muhr, Edouard Plasari, D. Jacob, Charles-Elie Lefaucheur. Effect of calcium based additives on the sodium bicarbonate crystallization in a MSMPR reactor. Powder Technology, Elsevier, 2014, 255 (SI), pp.134-140. 〈10.1016/j.powtec.2013.08.009〉. 〈hal-01275922〉

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