Plate Evaporator

Plate evaporators are especially effective for free-flowing liquids with low to moderate viscosity and relatively uniform boiling behavior.They may also be used for selected higher-concentration products, provided that the final viscosity and fouling characteristics remain compatible with the plate channel design.

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Description

Aiprel plate evaporators are designed for the efficient concentration of heat-sensitive, high-value and process-sensitive liquids. Their compact plate-and-frame construction provides a large heat transfer area, strong turbulence and short product residence time, helping achieve efficient evaporation while reducing unnecessary thermal exposure.The specially engineered plate channels can use steam or hot water as the heating medium. Product and heating medium flow through separate passages in a counter-current arrangement, allowing the plate evaporator to operate with a relatively small temperature difference and improved thermal efficiency.Aiprel plate evaporators can be configured for single-stage or multiple-effect evaporation processes. Capacity can also be adjusted by changing the number of plates within the permitted frame range, providing flexibility for production expansion or changing process requirements.

Working Principle

The product and heating medium flow counter-currently through their respective channels. The defined plate spacing and specially designed plate geometry generate strong turbulence, enabling efficient heat transfer.

As the product reaches its boiling point, the generated vapor carries the remaining liquid upward along the plate surfaces as a rising film. The vapor-liquid mixture then enters the vapor passage of the plate pack and flows to a downstream centrifugal separator, where the vapor and concentrated liquid are separated.

The wide inlet passage and upward-flow arrangement ensure even fluid distribution and stable flow across the entire cross-section of the plate evaporator.

Main Advantages

Flexible Heating Media

Thanks to the specialized geometry of the heat transfer plates, Aiprel plate evaporators can use either steam or hot water as the heating medium, providing flexibility across different operating conditions.

Compact Design and Reliable Product Quality

The compact construction, short connecting pipework and small installation footprint help optimize production-floor layout while maintaining efficient evaporation performance and consistent product quality.

Adjustable Processing Capacity

Evaporation capacity and heat transfer area can be adjusted by adding or removing plates, allowing the equipment to accommodate different production requirements.

Easy Cleaning and Maintenance

The removable plate-and-frame construction provides convenient access for servicing. Operators can loosen the tightening bolts, move the pressure plate and remove individual plates for inspection or cleaning, helping reduce maintenance time and equipment downtime.

Specification

Plate Arrangement: Each pair consists of two plates of different configurations
Heating Medium: Steam or Hot Water
Product Flow Direction: Upward Flow
Plate Materials: SS304, SS316, SS316L, Titanium, Alloy C276 Frame Materials
Frame Materials: Carbon Steel or Stainless Steel
Vapor–Liquid Mixture Outlet: Large shaped port at the top of the plate
Steam Inlet: Small shaped port at the top of the plate
Condensate Outlets: Bottom left and right ports
Plate Corrugation: Low-resistance corrugation

Application

Food and Beverage

Fruit juice concentration
Vegetable juice concentration
Fruit and herbal extracts
Sugar solutions
Syrups and sweeteners
Coffee extracts
Tea extracts
Dairy products
Milk concentration
Whey concentration
Liquid food ingredients
Meat and vegetable broths

Biotechnology and Pharmaceutical Processing

Fermentation broth concentration
Biological extracts
Pharmaceutical intermediates
Active ingredient solutions
Temperature-sensitive process liquids
Plant extracts
Nutraceutical ingredients

Chemical Processing

Chemical solution concentration
Alkali solutions
Organic process liquids
Solvent recovery duties
Specialty chemical production
Process-liquid volume reduction

Environmental and Resource Recovery

Industrial wastewater concentration
Recovered liquid concentration
Process-water reuse
Valuable material recovery
Waste-volume reduction

Final suitability depends on viscosity, solids content, boiling behavior, fouling tendency, corrosion risk and required final concentration.