Specifications

Forced circulation evaporator for crystallization plant
Application
The most common use of this evaporator is as an evaporative crystallizer with materials having relatively flat or inverted solubility. It can be used for continuous processing of such materials as Sodium Chloride, Sodium Sulfate, Cobalt Sulfate, Nickel Sulfate, Ammonium Sulfate, Sodium Carbonate Monohydrate, Citric Acid, Monosodium Glutamate, Urea and similar crystalline materials.

Working theory
In a forced circulation evaporator, liquor is pumped from the bottom cone of the vapor body through the tubes of the heat exchanger, where heat is added, and back into the vapor body where evaporation occurs.

Sufficient liquid height (submergence) is maintained above the liquor inlet on the vapor body and above the heat exchanger tubes to suppress mass boiling in the inlet and prevent boiling at the tube surface. This is necessary to prevent precipitation in the tubes which would lead to fouling of the heat transfer surface.

A high circulation rate is provided for adequate tube velocity to achieve good heat transfer. Therefore, lower temperature rises are assured which minimize supersaturation of the solution. The circulating pump is usually of the axial-flow, single-elbow design, well suited for the high flow rates and low pressure drops in Senon-designed circulating systems. These heavy duty pumps operate at low speeds, which minimize erosion and reduce maintenance.

SENON is capable to design and supply many different types of equipment to achieve processing requirements. Our specialty is designing and installing innovative systems to convert liquid solutions into dry solids using evaporation and crystallization. Please reach us & let us know your requirements. 

Looking forward to hear from you.