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Master Thesis

Cristallisation sous champ magnétique : applications dans la prévention du phénomène d’entartrage

Abstract : Water is a major raw material for Industry. It can be used directly in the process or serve as a heat transfer fluid or coolant, for instance in heat exchangers. However, ions contained in water lead to the formation of limescale. Calcium carbonate (CaCO3) is known to be one of the main components of scale that is commonly found in the chemical and related industries. Calcium carbonate scale often grows extensively on equipment and parts, causing major operational difficulties such as reduction/blockage of the flux, reduced transfer capacity, leaking valves. An existing treatment relies in the use of acid but leads to a discontinuous production mode. The use of large volumes of acid can be harmful to the environment and accelerate corrosion. Here, we study an alternative treatment, which consists in the application of an electromagnetic field in the circulation loop. The objective is the scaling control induced by calcium carbonate precipitation. The influence of an electromagnetic field on the precipitation process is studied. Several experiments are then carried out on diluted calcium carbonate solutions, in the presence or absence of an electromagnetic field. The mechanisms that take place during the early stages of nuclei formation are described and the interest of the electromagnetic field on deposit prevention is assessed.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01835212
Contributor : Bu Carreire Université de Bordeaux <>
Submitted on : Wednesday, July 11, 2018 - 11:35:59 AM
Last modification on : Saturday, July 14, 2018 - 1:18:55 AM
Long-term archiving on: : Friday, October 12, 2018 - 7:02:35 PM

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Pharmacie_2018_Drochon.pdf
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  • HAL Id : dumas-01835212, version 1

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Maxime Drochon. Cristallisation sous champ magnétique : applications dans la prévention du phénomène d’entartrage. Sciences pharmaceutiques. 2018. ⟨dumas-01835212⟩

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