Very low residence time
A continuously renewed film reduces thermal exposure.
Glass Wiped Film Evaporators
Glass wiped-film evaporators for high-vacuum concentration and distillation of viscous, heat-sensitive and difficult-to-handle materials.
UD Technologies · Vadodara, India
Agitated thin-film evaporation
Renew the film continuously for gentle, efficient evaporation.
A wiped-film evaporator spreads feed as a thin, mechanically agitated film over a heated surface. Continuous film renewal improves heat and mass transfer while keeping residence time low—an important advantage for viscous, heat-sensitive or fouling materials.
The UD Technologies roller-wiper design overlaps the wiping path across heated and unheated areas to limit dead zones, caking and product build-up. Glass and PTFE contact parts provide visibility and corrosion resistance for pharmaceutical, chemical, polymer, food, oil and specialty-product duties.
High-vacuum duty
Lower boiling temperatures protect sensitive products.
Viscous feeds
Mechanical wiping maintains film movement and renewal.
Up to 1.5 m²
Glass-shell and PTFE versions scale to larger duties.
Salient features
Built for sensitive and difficult evaporation duties.
Wiper geometry, orientation, vacuum and downstream rectification can be selected around the feed and product objective.
Uniform thin film
Rollers maintain laminar film movement across the evaporator surface.
Reduced fouling
Overlapping wiping paths limit dead zones, caking and build-up.
Corrosion-resistant contact parts
Glass and PTFE minimise corrosion and product degradation.
Efficient vapour recovery
A dedicated condenser is sized for high-vacuum operation.
Hazardous-area options
Flameproof electrical equipment and instrumentation are available.
Automated operation
SCADA control can be supplied for repeatable process management.
Wiping configurations
Select the film-forming arrangement around the product.
Viscosity, fouling tendency, residence-time target and product quality determine the wiping and orientation options.
Roller wiped-film evaporator
Overlapping rollers for uniform film renewal
The roller system renews the film continuously and wipes unheated areas to minimise stagnant product and caking.
Standard capability
- Contact materials
- Borosilicate glass and PTFE
- Operation
- High-vacuum evaporation or distillation
- Heat-transfer area
- Up to 1.5 m² in glass-shell/PTFE versions
- Electricals
- Flameproof options available
Alternative wiped-film arrangements
Application-specific wiping and orientation
Blade or spiral-gearing wipers, horizontal construction and vertical co-current agitated thin-film systems are available on request.
Options
- Wipers
- Roller, blade or spiral-gearing systems
- Orientation
- Vertical or horizontal
- Flow
- Vertical co-current arrangement available
- Purification
- Rectification column optional for top-product quality
- Controls
- SCADA-operated system optional
Related system
Compare other gentle evaporation technologies.
Review falling-film evaporation where a gravity-driven liquid film and very short contact time suit the feed.
Discuss your requirements