Industrial Evaporators
What is an Industrial Evaporator?
An industrial evaporator is used to evaporate a volatile solvent, usually water, from a solution. Its purpose is to concentrate non-volatile solutes such as organic compounds, inorganic salts, acids, or bases. Specific solutes include phosphoric acid, caustic soda, sodium chloride, sodium sulphate, gelatin, syrups, and urea.
In many applications, evaporation results in the precipitation of solutes in the form of crystals, which are usually separated from the solution with cyclones, settlers, wash columns, elutriating legs, filters, or centrifuges. Examples of crystals produced are sodium chloride, sodium sulphate, sodium carbonate, and calcium sulphate. The desired product can be a concentrated solution, the precipitated solids, or both.
In some applications, the evaporator is used primarily to recover a solvent, such as potable water, from saline water. The relatively high purity condensed water vapor from many evaporators is recovered for boiler feed makeup, salt washing, salt dissolving, pump seals, instrument purges, equipment and line washing, and other uses.
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Falling Film Evaporator
Forced Circulation Evaporators
Mechanical Vapor Recompression (MVR) Evaporators
Multiple Effect Evaporators
Swenson’s multiple-effect evaporators are cost-effective when high-pressure steam is available to heat the system.
Rising Film Evaporators
