Estudo da cristalização da sacarose com adição de antissolvente
Ver/
Fecha
2013-03-28Autor
Mantilla, Hernán Dario Rojas
Metadatos
Mostrar el registro completo del ítemResumen
In the study of the sucrose crystallization process, the nucleation phenomena
and crystalline growth have been evaluated, when the systems were submitted to
different solvent and operational conditions.
The main objective of the present work was to study the sucrose crystallization
process in solution through the partial change of the solvent. This change occurs
through studied with the ethanol addition of a second solvent, a compound that
reduces the solute solubility, but that is miscible in the first one. The addition of a
second solvent generates a high degree of supersaturation, and promotes the
formation of crystalline nuclei of smaller size to be used as seeds in industrial
processes.
Another objective was to study the flowability properties of particle size by
determining the Hausner ratio and repose angle that allows relate some variable
results obtained by the crystallization of sucrose.
With the obtained results, it would be possible to improve the control of the
finally properties of the crystalline product, such as crystal size distribution (CSD),
crystalline habit, crystalline fluid inclusions and the formation of crystalline
polymorphs.