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Falling Film Evaporator

  • Single-effect Falling Film Evaporator

Single-effect Falling Film Evaporator

  • Single-Effect Falling Film Evaporator | Professional Evaporator Manufacturer| Yiwu Weihao Machinery Equipment Company
  • Robust and versatile single-effect falling film evaporator for reliable liquid concentration across food, beverage, chemical, and pharmaceutical sectors. Delivers consistent performance, easy maintenance, and cost-effective operation for small to medium-scale production needs.
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Single-effect Falling Film Evaporator


Product Details

Yiwu Weihao Machinery Equipment Company single-effect falling film evaporator is engineered to deliver dependable performance for a wide range of industrial evaporation applications. As the most basic and cost-efficient configuration, it provides a reliable solution for processes where energy consumption is not a primary limiting factor, or for smaller production volumes where multi-effect systems may be over-specified.


Working Principle 

  1. Feed Preparation: Raw liquid (juice, milk, extract, chemical solution, etc.) is pre-filtered and preheated to an optimal temperature (typically 45–60°C) to ensure smooth flow and reduce viscosity.

  2. Film Formation: The preheated liquid is evenly distributed across the inner walls of vertical heating tubes via a precision distributor, forming a thin, falling film. This design maximizes the heat transfer surface area.

  3. Evaporation: The heating medium (steam or hot water) heats the liquid film. Under vacuum conditions (typically -0.04 to -0.08 MPa), the liquid boils at low temperatures (50–80°C), minimizing thermal degradation of heat-sensitive components.

  4. Vapor Separation & Removal: The generated vapor is separated from the concentrated liquid in a demister and then condensed in a condenser. The vapor is either recovered for reuse or discharged.

  5. Continuous Discharge: The concentrated product is continuously discharged from the bottom of the evaporator, with concentration ratios adjustable to meet specific process requirements (usually 1.2:1 to 8:1).


Core Advantages

  • Cost-Effective Solution: Lower initial investment and simpler design compared to multi-effect systems, making it ideal for small to medium production volumes or budget-conscious projects.

  • Reliable & Low Maintenance: Fewer components and a straightforward design translate to lower operational costs, easier upkeep, and high reliability with minimal downtime.

  • Gentle Processing: Falling film technology ensures short residence time (3–8 seconds) and low-temperature operation under vacuum, preserving the flavor, color, and nutritional value of food and beverage products.

  • High Heat Transfer Efficiency: The thin liquid film promotes rapid and uniform heat transfer, enabling fast evaporation rates and stable throughput.

  • Hygienic & Safe: Constructed from food-grade 316L/304 stainless steel for product contact parts, fully compliant with FDA, GMP, and ISO 22000 standards. Features a CIP (Clean-in-Place) system for easy sanitation.

  • Compact Footprint: The vertical, tube-in-shell design occupies less space, making it suitable for facilities with limited area.


Technical Specifications


ParameterSpecification
ModelSF-FF-50 to SF-FF-1500 (Customizable)
Processing Capacity50 – 5000 L/h (varies by liquid type and concentration)
Operating Vacuum-0.04 ~ -0.08 MPa
Boiling Temperature50 – 80°C
Heating MediumSteam (0.2–0.6 MPa) or Hot Water
Material of Construction316L/304 Food-Grade Stainless Steel (contact parts)


Key Applications

  • Food & Beverage: Fruit juice concentration, dairy (milk, condensed milk), vegetable juice (tomato, carrot), honey, syrups, and herbal infusions.

  • Pharmaceutical & Biotechnology: Herbal extract concentration, tincture processing, and small-batch API purification.

  • Chemical Industry: Low-volume solvent recovery, salt solution concentration, and fine chemical processing.

  • Environmental Engineering: Small-scale industrial wastewater concentration and brine processing.


Our Service

We provide comprehensive solutions for your single-effect falling film evaporator requirements:

  1. Application Consultation: Expert advice to determine if a single-effect configuration is optimal for your specific process and production scale.

  2. Custom Design: Tailor the unit to your liquid properties, target concentration, and site constraints.

  3. Professional Manufacturing: Strict quality control to ensure durable, reliable equipment with a long service life.

  4. Installation & Commissioning: On-site support for seamless integration into your production line.

  5. Training & Support: Operator training and technical documentation to ensure optimal performance.

  6. After-Sales Service: Lifelong maintenance support, spare parts supply, and troubleshooting.

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

Email: jn670209@gmail.com | Website: www.onlyhaomachine.com