Falling Film Evaporator Dealers in Chennai (4 products available)

In falling film evaporator, water is distributed in tubes like a fine film layer on surface of tubes. Due to less wetting in surface and scaling, fouling materials will form a layer of insoluble scale that reduce its evaporation capacity. Feed vapour is separated in vapour separator. Use of falling film evaporator with multiple effects ensures high energy efficiency & is ideal for concentration of heat sensitive products, with low scaling tendency. We installed many falling film evaporator at various capacity for various industries. Mainly falling film evaporator are suitable for handling reverse osmosis reject water and having more than 40,000mgl TDS. This system evaporates up to 90% of feed and gives concentrate 300gram per litre. This concentrate is dried in drier crystallized in crystallizer or handled with forced circulation with KWS pusher centrifuge.

The falling film evaporator consists of shell and tube heat exchanger called as calandria that is mounted in vertical position. The liquid product enters the evaporator at the head and is evenly distributed to the heating tubes.A thin film enters the heating tube and flows downwards at boiling temperature through the steam in the jacket and is partially evaporated.The vapour is separated from the liquid in vapour separator and the concentrated liquid is collected at the bottom or transferred to the next stage.The falling film evaporators can be single effect or multiple effects depending on the capacity.Falling film evaporators can be operated with small temperature differences between the heating media and the boiling liquid and they also have short product contact time. These characteristics make the falling film evaporator particularly suitable for heat sensitive products and it is the most frequently used evaporator. Advantage : Ideal for clear, heat sensitive foaming and corrosive solutions. Continuous, single pass operation with minimized retention time. Single or multiple units with high heat economy. High heat transfer co-efficient. Low power requirement. Simple construction. Low floor space requirement. Applications : Food Herbal extracts Pharmaceuticals Dairy Dyestuff Black liquor in paper amp; pulp. Ammonium Nitrate. Sugar Syrups.

Falling Film evaporators Falling Film Evaporator Operation HATCO Falling Film Evaporators offer distinct operating advantages in the concentration of many materials, such as certain food products, fruit juices, pharmaceuticals and similar materials, which are particularly suited to evaporation in this type of equipment. Our Falling Film Evaporators are unique in that they utilize novel operating principle from other types. The dilute liquid is fed to the top of the tubes, flows downward as evaporation occurs. Uniform distribution of the liquid to the tubes is assured by an exclusive feature which controls the flow of the liquid to the top of the vertical heating tubes. The liquid flows over the edge of the tubes and runs down the inside surface in a thin, uniform film. The vapor travels down the tubes in the same direction as the liquid, gaining in velocity by the addition of more vapor as the mixture descends, resulting in high velocity for both the liquid and vapor. Falling Film Evaporator Characteristics Flexible in operation, permitting continuous or batch operation. Very suitable for multiple effects. Simplicity of construction permits economical use of corrosion resistant materials. Handles liquids which increase in viscosity at higher concentrations because the liquid flows as a thin film down the surface of the heating tubes. Vaporizes viscous materials more readily than a natural circulation evaporation as vaporization takes place from a thin film. Can be used advantageously with Thermal Re-compression. Low power requirements. Low holding volume. Can be configured as a counter current falling film for stripping application. Falling Film Evaporator Product Application Liquids too viscous for natural circulation. Liquids where retention time must be minimized. Heat-sensitive liquids or when excess temperature is critical. Liquids requiring limited temperature difference. Falling Film Evaporator Application Examples Caustic Soda Pectin Solutions Sorbitol Fruit Juices Pharmaceuticals Corn Steepwater Sucrose

Falling Film Evaporators, recovery boilers