The Thin Film Evaporation Process

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The thin film evaporator is an evaporation process that is used primarily to concentrate a solute. There are also several industrial applications with this operation, such as to refine or recover a value production through distillation or similar thermal separation processes. For instance, this process is used to remove the excess water when making orange juice concentrate.

How does the thin film evaporator work?

The operation works by distributing the product through rotors and wipers evenly over the heating surface, forming a thin product film. Set parameters create optimum film boiling within the thin film evaporator. This is set by highly turbulent swirls that are produced at the tip of the rotor blades and wipers. As the product comes into contact with the heating surface, the rotors and wipers supply intensive mixing and agitation of the product. This process provides for minimal resistance for heat transfer through a constant renewal of the product film. This operation creates a short residence time of the product, providing 99% or more evaporation in a single pass. This powerful heated zone can concentrate diluted solutions to powder if necessary.

The evaporation and thin film is caused by the magnetron sputtering process, which is created by the manufactured and set magnetic field within the evaporator. The magnetic sputtering erodes the gas ions out of plasma and accelerates it towards the target product. The target then sputters the material and deposits it onto a substrate, producing a thin film on the substrate.

For what is this process used?

The thin process evaporation, along with the similar design of the thin filming drying technology, is utilized in many industries, particularly the chemical and pharmaceutical industries. Thin film sources are used to make biomedical equipment, in telecommunications, and imagining and printing equipment.

Why is this operation the best process for concentrating and solidifying a product?

The design features make it ideal for thermal treatment of heat sensitive products and viscous material when reduced operating temperatures and vacuum pressure is desired. It is an ideal operation which provides even heating transfer with minimal resistance. This thin film evaporation process causes the moisture to be evaporated quickly and Efficiently.

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Source by Callie Preisendorf