Crystallizers aid in performing the process of crystallization, where solid crystals form through the solution. The crystals usually melt or are occasionally collected from the gas. The crystallization process comprises two stages: nucleation and crystal growth. Industries predominantly utilize the crystallization process for producing salt and sugar. Let’s have a look at both the processes in a more detailed manner.
The process of sugar production through crystallizers
The sugar industry widely employs the crystallization method in sugar production, following the completion of the evaporation method. The initial stage of the sugar-producing process involves utilizing the evaporation method. This process involves the boiling of the sugar cane through evaporators. This helps in removing all the water and forming a thick syrup. Following this stage, utilize the process of crystallization by boiling the syrup at a very low temperature. Conduct the low boiling under partial vacuum, and add some seedlings during this procedure.
The seedings lead to the formation and growth of the sugar crystals. Massecuite is the term for the raw sugar crystals that form along with the molasses. Then, apply centrifugal separation to separate the molasses and raw sugar crystals. It is essential to use the seeding technique during the sugar crystallization process. There are basically two types of seeding techniques, shock seeding, and full seeding.
The process of salt production through the crystallizer
Seawater, a rich source of salt that readily dissolves in water, has been a global harvest since ancient times. The production of salt from seawater occurs through the process of evaporation. The seawater evaporates until crystallization takes place. Crystallization happens when the solubility of the solvent surpasses the concentration of the chemical. During the crystallization process, the crystallization facilitators add seed crystals to promote the formation and growth of pure crystals. The growth of the crystals depends on the interlocking of the salt molecules in the solution.
Salt molecules and crystals bond, creating a nucleus. Enhanced growth leads to precipitation, known as crystallization, until equilibrium is reached.