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Advantages & Applications Of Wiped Film Evaporators

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By Author: SVAAR Process
Total Articles: 40
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Wiped film evaporator is mainly designed to maintain challenging evaporation needs with materials like heat-sensitive, low thermal conductivity. Basically, this technique involves the separation of volatile compounds by introducing a mechanically stimulated thin film of the feed material on the heated surface. Wiped film evaporator is also called a thin-film evaporator
In Wiped Film Evaporator, the rotating wiper system distributes the raw product to the film on the middle surface of the hot water pipe. The wiping system tries to speed up the evaporation process by keeping the product film turbulent which will optimize the heat transfer and mass transfer.
The lower boiling point of the raw material evaporates from the product film in a short time; The housing of the product on the evaporator wall is very small. Vapors condense on an external condenser.
The condenser is located on the outside of the evaporator and is connected to the evaporator through a pipe. So the velocity of the vapors at high evaporation rates and low pressures will become very high. Due to the pressure drop created by the vapor moving ...
... towards the external condenser, the achieved vacuum in a Wiped Film Evaporator is limited to about 1 mbar.

Advantages of Wiped Film Evaporator
• Consistent refining process
• Low operating pressures
• Large evaporation rates
• Low residence time
• It is possible to combine columns to increase the number of theoretical plates
• Low fouling on evaporator wall

Major Applications of Wiped Film Evaporator
• Oil Deodorization
o Fractionation of tall oil
o Concentration of monoglyceride
o Pesticide removal from lanolin
o Colour improvement of lanolin
• Pharmaceutical
o Distillation of pharmaceutical intermediates
o Distillation of pharmaceutically active substances
• Polymer Devolatilization
o Purification and concentration of monomers
o Purification and concentration of polymers
o Purification of plasticizers
• Flavor Purification
o Elimination of terpenes and concentration of essential oils
o Separation of solvents of the odorous substance
o Concentration of lemon flavors
• Solvent Recovery
• Molecular Distillations Of Esters, Fatty Acids, Mono, Di, & Triglycerides
• Residue Removal / Decolorization
• Vitamin, Nutraceutical, Essential Oil Isolation
• Wax Fractionation
• PCB, Insecticide Removal
• Water Removal – ppm Level.
• Biomaterial Concentration


Choose Best Wiped Film Evaporator Manufacturer & Supplier for better production
Professional Wiped Film Evaporator Supplier & Manufacturer has the experience to provide services to many of the industrial sectors like the food industry, Pharmaceuticals, Cosmetic Industry, Chemical Industry, wastewater industry and many more. Wiped Film Evaporator Suppliers offer wiped film evaporator (WFE) system for use in concentration, –distillation, dehydration & deodorization of heat-sensitive components. Some of advantages offered by manufacturers:
 High heat transfer rates
 Short retention time avoids product degradation
 Can handle viscous products
 Suitable for vacuum operation
 Energy-efficient operation

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