Forced Circulation Crystallizers
Engineering and Manufacturing Crystallizers for Chemical Process Industries
What are Forced Circulation Crystallizers?
Forced circulation (FC) is the most widely supplied method of crystallization. The Swenson forced circulation crystallizer is the best choice for applications that require high rates of evaporation and for solutions with relatively flat or inverted solubility, that contain scaling components, or exhibit high viscosity.
Benefits of Forced Circulation Crystallizers:
- Ideal for applications for low strength solutions that require high rates of evaporation
- Well suited for solutions with inverted solubility
- Lowest cost compared to other crystallization methods
- High circulation rate limits supersaturation of scaling components
- Wide range of sizes available to meet application requirements
This type of unit consists of a body sized for vapour release with a liquid level high enough to enclose the growing crystals. Suction from the lower portion of the body passes through a circulation pump and a heat exchanger and returns to the body through a tangent or vertical inlet. The heat exchanger is omitted when adiabatic cooling is sufficient to produce a yield of crystals.
Forced circulation crystallizers can be operated on a batch basis, but the most frequent use is continuous processing in applications such as sodium chloride, sodium sulfate, sodium carbonate monohydrate, citric acid, monosodium glutamate, urea and other similar crystalline materials.
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