Falling Film Evaporator Types

Aug 29, 2019 Falling film evaporator. This type of evaporator is generally made of 4–8 m (13–26 ft) tubes enclosed by steam jackets. The uniform distribution of the solution is important when using this type of evaporator. The solution enters and gains velocity as it flows downward. This gain in velocity is attributed to the vapor being evolved against ...

Dec 08, 2021 A falling film evaporator is a machine used to separate two or more substances with different boiling point temperatures. It does this by taking advantage of changes in state at different temperatures and uses heaters and condensers to complete this task. These machines have many applications across a variety of industries, including the cannabis and hemp sector.

Falling Film evaporator can be operated with very low temperature difference between the heating media and the boiling liquid. It has very short retention time, typically just a few seconds. These characteristics make the falling film evaporator particularly suitable for heat-sensitive products, and are today the most frequently used type of ...

Falling film evaporator suitable for processing low viscosity heat-sensitive fruit juice like apple, orange, pineapple, pomegranate, milk and dairy. ... Falling Film Type Evaporator; Forced Circulation Evaporator; Centrifugal Spray Dryer; Pressure Nozzle Spray Dryer; Heat Pump Dryer; Belt Dryer; Sterilizer Series.

Falling film evaporators are vertical shell and tube heat exchangers. Typical TEMA types are BEM, NEN or a combination of the two. The major difference between a typical shell and tube heat exchanger and a falling film evaporator is the liquid distribution at the top of the unit. Liquid entering the top of the unit passes either through a spray ...

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 ...

Falling film evaporators Vertical shell-and-tube heat exchanger, with integrated wrap-around, monobloc-type or laterally arranged separator Functional principle The liquid to be concentrated is fed to the top of the heating tubes and distributed so that it flows down as a thin film on the inside of the tube walls.

FilmVap. Proven and reliable, the Alfa Laval FilmVap falling film evaporator effectively concentrates large volumes of low- to medium-fouling liquids – economically and energy-efficiently. Robust and easy to operate and maintain, this multiple-effect, shell-and-tube evaporator takes up less than comparable units, due to its innovative ...

May 01, 2021 Low Operating Costs. Due to its relatively simple working principle, the falling film evaporator has lower running costs than other types of these devices. You can pour the solution into the head and is evenly distributed into its sections. This liquid forms a thin layer, known as film, on the tube walls.

May 08, 2022 Plate evaporator, rising/falling film type. (APVCompany, Inc.) A spiral-plate heat exchanger is constructed by winding two long strips of plate around an open, split center to form a pair of concentric spiral passages. Spacing is maintained along the length of the spiral by spacer studs welded to the plates. In some applications both fluid-flow ...

Our falling film evaporator is specifically suited to process your products with a low viscosity and a low tendency for fouling. It consists of a tube bundle crowned by a proprietary liquid distribution device that ensures an efficient and uniform distribution of the liquid to all the tubes. Your product flows as a continuous film along the ...

Plate Type Falling Film Evaporator (PTFFE) is efficiently developed for optimizing evaporation of sugar solutions with full accessibility of the heat transfer surfaces. PTFFE has the lowest pressure losses and higher turbulence on liquid side to achieve the highest heat transfer coefficient. Due to very high heat transfer rate of these ...

Plate-type evaporator. Distribution in a plate-type, falling-film evaporator can be arranged with two pipes running through the plate pack. For each product plate (in Figure 6.5.4), there is a spray nozzle in each product pipe, spraying the product in a thin, even film over the plate surface.

Such characteristics help the falling film evaporator become suitable, especially for all the heat-sensitive products, and nowadays, it is acclaimed as the most commonly used evaporator type. Nonetheless, the design of falling film evaporators is done carefully that is suitable for various operating conditions, respectively.

The falling-film transfers the heat evenly. Further, the process of evaporation is also pure, which prevents the liquid to overheat. Types of Falling Film Evaporator. Plate Falling Film. If we discuss the types of this Falling film, a plate falling film is the first type. The plate falling film is best known for its high-quality and energy value.

The film coefficient of evaporation outside the tube is mainly determined by the flow type of falling film outside the tube. ... Fig. 5.75 shows a single-effect vertical plate falling film evaporator and condensed vertical plate falling film type solar still working principle [27]. It consists of solar collectors, vertical plate falling film ...

The liquid film moves downward due to the effect of gravity, during the fall through the tubes the volatile fraction is evaporated and leaves the equipment through the top or the bottom, depending on the equipment configuration. ADVANTAGES. Low residence time – Minimal residence time. Minimal investment. Suitable for multiple effect ...

The rotary evaporator is mainly used for concentration, crystallisation, drying, separation and solvent recovery. Horizontal tube evaporators. The horizontal tube evaporator is the oldest type of chemical evaporator, although other improved types are now more commonly used. The main advantage of horizontal tube evaporators is the relatively ...

Types of evaporators : There are several types of evaporators available in the market; depending on their use, we can choose from the comprehensive list mentioned below. Natural / Forced circulation evaporator; Falling film evaporator; Rising film (Long Tube Vertical) evaporator; Short Tube evaporator; Climbing and falling-film plate evaporator

Types of Evaporators. 1. Falling Film Evaporators. The falling film evaporator is used for heat exchanger. It consists of a vertical shell and a tube heat exchanger. The concentrated liquid is fed at the top of the tube and then flows down to the surface tube as a thin film. As it gets heated further, the vapors get generated.

Types of evaporators. Working Principles. Hydrodynamic. Residence time. Heat Transfer. Liquid distribution : 1. Vertical Falling Film Evaporators. In general Falling Film Evaporators are build vertically. Typically, liquor is fed to the tops of tubes arranged as a bundle and flows down the walls as a film under gravity.

Working principle of falling film evaporators. A falling film evaporator is essentially a shell tube type of heat-exchanger used to evaporate heat sensitive liquids. The feed enters the evaporator through the top of the unit. It is then distributed evenly in the unit’s heating tubes. The liquid flows through tubes and forms a thin film on ...