Wiped & Thin Film Evaporators

Buying and Selling Unused, Used and Reconditioned Wiped / Thin Film Evaporators

Phoenix Equipment buys and sells Wiped Film / Thin Film Evaporators from various manufacturers, including:

• Cherry-Burrell
• Pfaudler
• Luwa
• Kontro
• Canzler
• Pemco
• Blaw Knox
• Artisan
• Chema-Bulke-Duerr
• Chemetron
• Leybold-Heraeus
• Hitachi
• GEA Canzler
• Pope Scientific
• LCI
• Rodney Hunt
• LaValley
• Buss
• SMS Butzbach
• Balfour
• Turba-Film®
• Rotovak®
• Vistran®
• Ajust-O-Film®
• Filmtruder®

How Wiped Film / Thin Film Evaporators Work

Functionality: Thin Film / Wiped Film Evaporators consist of a large diameter jacketed vessel where the product is agitated and continuously removed from the vessel wall by scraper blades mounted on an agitator shaft. The material is spread as a thin film on the tube walls by the mechanical agitator, allowing the processing of:

• Extremely viscous materials
• Heat sensitive materials
• Products that crystallize

Heating Medium: Steam or hot oil is typically used on the jacket side as the heating medium.

Applications: Thin Film / Wiped Film Evaporators are utilized in industries such as:

• Chemicals
• Polymers and resins
• Pharmaceuticals
• Fats and oils
• Food
• Dyes and coatings

Operating Process

Feed Introduction:

• Feed is added into the top and falls to a rotating distributor plate.
• The feed is evenly distributed to the heat transfer wall.

Wiper Blades

• Wiper blades create the thin film on the wall.
• Slots in the blades dissipate bow wave and pump fluid down.

Heat Transfer and Vapor Generation:

• Heat is transferred from the jacket, generating vapors.
• Vapors flow radially inward and pass through the rotated entrainment separator.

Entrainment Separator:

• Liquid droplets impinge on the entrainment separator and return to the heated wall.
• Vapors condense on the internal condenser, with distillate flowing down tubes and out the distillate outlet.

Product and Vapor Exit:

• The product continues down the wall and exits the bottoms outlet.
• Non-condensed vapors exit the vacuum outlet.

Design Variations

Short Path with Internal Condenser:

• Standard vacuum and high vacuum (short path) options.

Top Vapor Outlet (Counter-Current Flow):

• Top vapor outlet design.
• High viscosity design.
  
  

Benefits of Wiped Film / Thin Film Evaporators

Short Residence Time:

• Liquid remains on the hot surface for only a few seconds.

High Vacuum Operation:

• Allows reduced operating temperatures.

Excellent Heat Transfer:

• Process film is continuously agitated.

Handling Viscous Fluids:

• Wipers pump liquid down and provide a thin film.

Handling Dirty/Fouling Fluids:

• Wipers continuously agitate the film.

High Distillate Yield:

• Achieve >90% distillate in a single pass without recirculating.

No Bottom Steady Bearing:

• Wipers are effective at low speed.

Contact Us

For more information about our Wiped & Thin Film Evaporators inventory, please fill out our quick and easy quote form.