Three-effect Falling Film Evaporator

Three-effect Falling Film Evaporator

As a specialist evaporator manufacturer, our three-effect falling film evaporator is engineered to solve the core challenge of high energy consumption in industrial evaporation. By integrating three-stage steam recycling and falling film technology, it achieves exceptional efficiency while preserving the integrity of heat-sensitive materials, making it the go-to solution for mid-to-large scale production lines.

Working Principle 

1. Preprocessing: Raw liquid (juice, milk, extract, chemical solution) is pre-filtered and preheated to 45–60°C to reduce viscosity and ensure uniform flow.

2. First Effect Concentration: The liquid forms a thin film on vertical heating tubes, boiling under vacuum to generate secondary steam.

3. Steam Recycling: Secondary steam from the first effect is used as the heat source for the second effect; steam from the second effect powers the third effect. Each effect operates at progressively lower pressure and temperature (-0.05 to -0.095 MPa).

4. Gentle Processing: Low-temperature boiling (45–75°C) with short residence time (2–5 seconds) minimizes degradation of flavors, nutrients, and active compounds.

5. Continuous Discharge: Concentrated product is continuously discharged from the third effect, with adjustable concentration ratios (2:1 to 12:1) to meet specific product specs.

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Core Advantages

• Superior Energy Efficiency: Reuses steam across three effects, reducing steam consumption by 60–70% compared to single-effect systems and 30–40% vs. two-effect models. Cuts operational costs and carbon footprint significantly.

• Premium Product Retention: Low-vacuum, low-temperature processing preserves natural flavors, colors, vitamins, and bioactivity—critical for juice, milk, herbal extracts, and pharmaceuticals.

• High Throughput & Stability: Falling film design ensures rapid heat transfer and consistent evaporation, supporting continuous operation with customizable capacity (100–3000 L/h).

• Hygienic & Safe: Constructed from 316L/304 food-grade stainless steel, compliant with FDA, GMP, ISO 22000. Equipped with CIP (Clean-in-Place) for easy sanitation and explosion-proof options for hazardous environments.

• Space-Saving Design: Compact three-effect configuration fits existing lines or new facilities, with a smaller footprint than multi-effect systems with external boilers.

• Smart Automation: PLC + HMI control system for real-time monitoring of temperature, pressure, flow rate, and concentration. Enables remote operation and unmanned production for enhanced efficiency.

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Technical Specifications

Key Applications

• Food & Beverage: Fruit juice (apple, orange, grape), vegetable juice (tomato, carrot), dairy (milk, condensed milk, yogurt base), honey, and syrup concentration.

• Pharmaceutical & Biotechnology: Herbal extract concentration, API purification, fermentation broth, and botanical tincture processing.

• Chemical Industry: Salt solution, organic solvent recovery (alcohols, esters), and fine chemical concentration.

• Environmental Engineering: Industrial wastewater zero-liquid-discharge (ZLD) systems and brine concentration.

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Our Service

We provide end-to-end solutions for your three-effect falling film evaporator needs:

1. Custom Design: Tailor the system to your liquid properties, target concentration, production capacity, and site constraints.

2. Manufacturing & QC: Strict ISO 9001 quality control ensures durable, reliable equipment with long service life.

3. Installation & Commissioning: Professional on-site team for seamless integration into your production line.

4. Training & Support: Comprehensive operator training and technical documentation for optimal operation.

5. After-Sales Service: Lifelong maintenance support, spare parts supply, and troubleshooting to minimize downtime.

Contact Us Today for a free technical consultation and customized quotation.