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Crystallizer selection and design

2002 
Publisher Summary Crystallization is a very old technology, and information related to the crystallization of both salt and sugar goes back to the beginning of civilization. Within the past 30 years, the technical means to measure nucleation in operating equipment have been developed. This has given a new insight into the design of crystallization equipment with the result that modern crystallization designs are far more flexible in terms of their ability to control crystal product size and size distribution than earlier equipment. In approaching any new or existing crystallizer installation, it is important to evaluate the way the unique properties of the crystal product and its mother liquor impact the crystallizer design selection. It is also necessary for anyone involved in selecting and designing crystallization equipment to know the characteristics of at least the major crystallizer designs in use currently and the way to apply these to specific industrial problems. Crystallization has long been considered an art rather than a science, although recent theoretical discoveries and new analytical techniques have produced a change in this historic position.
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