Effect of calcium based additives on the sodium bicarbonate crystallization in a MSMPR reactor - Université de Lorraine
Journal Articles Powder Technology Year : 2014

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.
No file

Dates and versions

hal-01275922 , version 1 (18-02-2016)

Identifiers

Cite

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, 2014, 255 (SI), pp.134-140. ⟨10.1016/j.powtec.2013.08.009⟩. ⟨hal-01275922⟩
192 View
0 Download

Altmetric

Share

More