LrgpV1, Main, Exploration, bibRecord, 000478

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

Identifieur interne : 000478 ( Main/Exploration ); précédent : 000477; suivant : 000479

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

Auteurs : A. Gerard [France] ; H. Muhr [France] ; E. Plasari [France] ; D. Jacob [France] ; C.-E. Lefaucheur [France]

Source :

Powder technology [ 0032-5910 ] ; 2014.

RBID : Pascal:14-0079857

Descripteurs français

Pascal (Inist)
- Additif, Cristallisation, Réacteur, Dioxyde de carbone, Solution aqueuse, Production, Croissance cristalline, Distribution densité, Régime permanent, Cristalliseur MSMPR.
Wicri :
- topic : Production.

English descriptors

KwdEn :
- Additive, Aqueous solution, Carbon dioxide, Crystal growth, Crystallization, Density distribution, Production, Reactor, Steady state.

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 °C and 80 °C.

Url:

https://hal.univ-lorraine.fr/hal-01275922

Affiliations:

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Additive</term>
<term>Aqueous solution</term>
<term>Carbon dioxide</term>
<term>Crystal growth</term>
<term>Crystallization</term>
<term>Density distribution</term>
<term>Production</term>
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<term>Steady state</term>
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<term>Dioxyde de carbone</term>
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<front><div type="abstract" xml:lang="en">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 NaHCO<sub>3</sub>
 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 °C and 80 °C.</div>
</front>
</TEI>
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<name sortKey="Gerard, A" sort="Gerard, A" uniqKey="Gerard A" first="A." last="Gerard">A. Gerard</name>
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Effect of calcium based additives on the sodium bicarbonate crystallization in a MSMPR reactor

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

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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