Surface Cooled Crystallizers
Engineering and Manufacturing Crystallizers for Chemical Process Industries
What are Surface Cooled Crystallizers?
For operation at temperatures below which it is not economically feasible to use vacuum equipment, or for solutions with very high boiling point elevations, the Swenson surface cooled crystallizer is generally specified.
The surface cooled unit is a type of forced circulation crystallizer consisting of a shell and tube heat exchanger through which slurry containing growing crystals is pumped, and a crystallizer body to provide retention time. Within the crystallizer body is a baffle designed to keep excessively fine crystals separated from the growing magma for size and slurry density control purposes.
Benefits of Surface Cooled Crystallizers:
- Ideal for applications with a high boiling point elevation (BPE) or low temperature levels
- Suited for removing select contaminants such as sodium chloride from caustic solutions
- Can be used when the temperature level is so low that evaporation by vacuum is not practical
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