Falling Film Evaporators
A falling film evaporator distributes feed as a thin film down the inside of vertical heating tubes, where it evaporates rapidly at low temperature difference and very short residence time. This makes it the preferred choice for heat-sensitive products — milk and whey, fruit juice, gelatine, pharmaceutical solutions — where product quality must be preserved. KWS designs each unit to the feed's specific properties, with single, double, or triple-effect and MVR configurations for maximum energy recovery.
Key Advantages
Gentle on the product
Short residence time and low ΔT protect heat-sensitive and high-value feeds from thermal degradation.
High heat-transfer efficiency
Thin-film formation maximises the heat-transfer coefficient, reducing heating surface and footprint.
CIP-ready, hygienic design
SS 316L contact parts and clean-in-place compatibility meet FSSAI and pharma surface-finish standards.
Scalable & energy-efficient
Modular single-to-triple effect and MVR options cut steam consumption as throughput grows.
Technical Specifications
| Capacity Range | 500 – 50,000 L/hr |
|---|---|
| Construction MOC | SS 304 / SS 316L |
| Operating Pressure | Vacuum – 3 bar |
| Steam Economy | 0.9 – 1.1 kg/kg (single effect) |
| Configurations | Single / Double / Triple effect · MVR |
| Standards | IBR / ASME |
| Delivery Timeline | 8 – 14 weeks |
Applications
- Dairy — milk & whey concentration
- Fruit juice & food
- Pharmaceutical solutions
- Gelatine & fine chemicals
- Distillery spent wash
Frequently Asked Questions
What feeds suit a falling film evaporator?
Low-to-moderate viscosity, non-fouling, heat-sensitive liquids that benefit from short residence time — dairy, juices, and many pharmaceutical and chemical solutions.
How much energy can it save?
Multi-effect and MVR configurations reduce steam consumption substantially versus single-effect operation — often by 70–80% with MVR.
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Discuss your falling film evaporators requirement
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