Effect of operating conditions on product quality in continuous eutectic freeze crystallization
Master Thesis
2013
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University of Cape Town
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Abstract
The efficiency of gravitational separation in a staged continuous Eutectic Freeze Crystallization process is largely influenced by the quality of solid products exiting the crystallizer. The particle size distribution and shape of the crystalline products affect the efficiency of the washing and filtration steps hence the ultimate purity of the product water and or salts. These characteristics are the net effect of the crystallizer operating conditions such as the level of supersaturation, residence time and magma density. In order to control the mentioned product characteristics, the mechanistic interaction of crystallizer operating conditions and product morphology and size needs to be understood. This work was aimed at investigating the effect of residence time and supersaturation on the product quality in continuous Eutectic Freeze Crystallization and a 2L glass crystallizer equipped with scrapers was employed for the investigations.
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Chivavava, J. 2013. Effect of operating conditions on product quality in continuous eutectic freeze crystallization. University of Cape Town.