Flexible design
From pilot to industrial scale (0.025–50 m²) in glass-lined or stainless steel for broad chemical compatibility
High efficiency
>95% concentration in one pass
Robust for viscous products
Mechanical wiping ensures uniform heat transfer and reduces fouling by up to 50%, lowering maintenance
EvapCare™-W Wiped Film Evaporator
Continuous evaporation for heat-sensitive & viscous products
Sulzer EvapCare-W wiped film evaporator is engineered for the most challenging evaporation processes, delivering gentle and efficient treatment of heat-sensitive, viscous, and fouling products. With its advanced rotor design, short residence times, and high evaporation ratios of exiting >95% without recirculation, EvapCare-W ensures maximum product recovery, reduced fouling, and minimal thermal degradation.
Available in metallic or glass-lined versions, this innovative system offers robust corrosion resistance, easy cleaning (CIP), and reliable operation under deep vacuum conditions.
Main benefits
High heat transfer coefficients
Short residence time
Low pressure drop
Operation under low vacuum
Evaporation ratios up to > 95% without recirculation
Able to process products with high viscosities
Able to process systems that form deposits
Easy to clean (CIP)
Main applications
Suited for products with high fouling tendency
Chemical industry
Petrochemical industry
Polymer industry
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EvapCare™ Film Evaporation Technology by Sulzer Chemtech
Overview
With EvapCare, the combination of vacuum operation and minimal residence time on heated surfaces ensures product quality is preserved. This approach effectively prevents secondary reactions, which is critical for industries including food, fine chemicals, and pharmaceuticals.
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Dr. Gerardine Epane
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EvapCare-W is engineered with a mechanical rotor that continuously renews the liquid film along the heated surface, preventing deposits and fouling. Its design enables evaporation of highly viscous fluids and feeds containing solid particles while maintaining low residence times. This ensures efficient evaporation without compromising product integrity.
Thanks to its rotor-driven thin film, it's customized distributor and wipers EvapCare-W achieves evaporation ratios exiting >95%. Unlike falling film evaporators, the fluid film thickness is thinner leading to lower liquid load requirement and higher evaporation ratio. The system also minimizes product hold-up, allowing high yields and efficient recovery of valuable compounds.
EvapCare-W is widely used in the chemical, polymer, pharmaceutical, waste treatment and food industries. It is ideal for concentrating viscous products, stripping solvents, removing deposits, or processing feeds containing solids. Its ability to handle heat-sensitive and fouling materials makes it indispensable for challenging separation and purification tasks.
Sulzer offers three rotor types tailored to process needs: Type L (rigid blades for defined clearance), Type P (hinged wiper blades that adapt to viscosity), and Type R (self-adjusting rollers for variable film thickness). This flexibility ensures optimal film formation, minimal fouling, and high efficiency across a wide range of products and operating conditions.
Yes. For highly corrosive or purity-critical processes, EvapCare-W can be supplied in glass-lined designs, where all product-wetted parts (except rotor blades) are glass-lined. The self-supporting rotor eliminates the need for a bottom bearing, ensuring long service life and outstanding corrosion resistance ideal for pharmaceuticals, specialty chemicals, and food-grade applications.
