Highly effective for concentrating heat-sensitive solutions with very short product contact times — usually a few seconds per pass — and minimal temperature difference between heating medium and boiling liquid.
A Falling Film Evaporator is a highly effective industrial device for concentrating solutions, especially those containing heat-sensitive components. It operates on the principle of a thin film of liquid falling under gravity that is partially vaporized by the heat source. Product contact time is very short — usually a few seconds per pass — and the system functions with very small temperature differences between the heating media and the boiling liquid. These qualities make it the most widely used evaporator type for heat-sensitive applications. Semco plants are also capable of drying whole egg, egg yolk, and egg white (albumen) using integrated spray drying.
SEMCO Process Equipment
Falling Film Evaporator (FFE)
A deep-dive technical engineering guide on falling film evaporator (FFE) design, covering fluid dynamics, heat transfer coefficients, wetting rates, and geometric sizing parameters.
Falling Film Evaporators offer very high heat transfer coefficients, operate with low temperature differences, and have extremely short liquid residence times, making them exceptionally energy-efficient and safe for heat-sensitive liquids like dairy or fruit juices.
Liquid distribution is critical. It is pumped to the top of the heating tubes where specialized distributors (like slotted plates or nozzles) ensure it falls as an even, continuous thin film down the inner walls of the tubes.
Custom-engineered ethoxylation systems for safe, precise reaction control in non-ionic surfactant and specialty chemical production. Due to the hazardous and highly exothermic nature of the EO reaction, systems demand robust mechanical design and strict safety compliance.
Complete esterification process systems optimized for high conversion efficiency and consistent product quality. Efficiently handles the reaction between acids and alcohols with precise temperature control, effective mixing, and reliable by-product separation.
Safe, efficient sulphonation and sulphation systems for introducing sulfonic or sulfate groups into organic compounds — mainly for surfactant and detergent manufacturing. Highly exothermic processes involving corrosive chemicals, requiring precise control and superior equipment integrity.
Ideal for heat-sensitive, high-viscosity, and fouling materials — converts liquids, slurries, and pastes to free-flowing solids in continuous, single-pass operation with self-cleaning heating surfaces.
Leading forced circulation evaporator for viscous, scaling, or crystallizing solutions — uses continuous pumped circulation to maximize heat transfer and separation efficiency.
Mechanical Vapor Recompression technology requiring up to 90% less external steam — dramatically cuts operating costs and carbon footprint for concentration-intensive processes.
**Information Summary:** A Multi-Effect Evaporator (MEE) is an advanced thermal apparatus designed for high-efficiency water evaporation using latent heat recovery. **Technical Specifications:** - Operating Principle: Sequence of vessels operating at progressively lower pressures. - Thermal Efficiency: Maximized via steam recycling across multiple effects. - Primary Applications: Effluent treatment, Zero Liquid Discharge (ZLD), chemical concentration, and salt recovery.
