Plate Type Falling Film Evaporator

Dec 31, 2017 In falling film evaporators (FFE), the evaporating liquid flows down a heat transfer surface driven by gravity. Most frequently in standard shell-and-tube heat exchangers, the heat transfer surface is in vertical orientation with the evaporating liquid flowing down at the inner side of the tubes (Scholl and Rinner 2006).However, in seawater desalination plants or in the …

Description of the Prior Art. Falling film evaporators in which a liquid flows down the surfaces of heating elements which consist of pairs of plates joined at their peripheries are widely used. Such an evaporator is described in U.S. Pat. No. 3,366,158, issued Jan. 30, 1968. A selective condenser which employs plate type heat exchange elements ...

Evaporator Configurations • Falling film evaporators • Climbing film evaporators • Forced circulation evaporators crystallisers • Plate type evaporators • High vacuum product flash coolers. Energy Options • Multiple effect • Mulitple effect with thermocompressor • Mechanical Vapour compression.

Falling Film Evaporator Film formed by mechanical means (Distribution plate) High turndown, can handle higher viscosity (Gravity helps) Primary technology worldwide for concentrations up to 50%TS 12 Plate-type FF Evaporator Vapor outlet Vapor inlet Liquor feed Liquor product NCG vent Condensate Distributor Plate heating element

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 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.

Falling film tubular evaporators with tube sizes of 35/45 mm and tube lengths ranging from 8.0 m to 12.0 m are used in about 40% of sugar factories, including sugar refineries. About 300 sugar refineries and factories use different types of falling film evaporators around the world. Isgec has advanced the concept of a falling film evaporator by ...

Falling-film plate evaporators, without the climbing film sections, have higher throughputs (up to 30,000 kg h −1 water removed) (SPX, 2008). Further details are given by Hoffman (2004) and Al-Hawaj (1999) describes their advantages, compared to tubular falling film evaporators.

Find your falling film evaporator easily amongst the 28 products from the leading brands (APV, Tetra Pak, ...) on DirectIndustry, the industry specialist for your professional purchases. ... As the original plate type evaporator, the Rising/Falling Film Plate system is a flexible, multi-duty unit engineered to handle small to medium production ...

In the case of the plate falling film evaporator, the medium is passed over the heating surface of the plate bundle (1) heated from the inside in order to concentrate and evaporate it. Through the distribution cup (2) ensures uniform loading of all heating elements. The circulation pump (3) and the recirculation lines (4) convey the medium in a ...

Jan 27, 2020 By “Falling Film Chiller”, we mean in fact an exchanger built with a series of Pillow plates, side by side and inserted in a frame, in which an evaporation takes place on the inside of the plates, with a fluid that can be ammonia or a refrigerant. On the outside we have water, evenly distributed in a film to cover the sides of each of the ...

Same design concept as plate type evaporators but with tubes ... These requirements have converged modern new evaporators into a design using falling film technology with 7 or 7 thermal effects and multiple 1st effect (“concentrator”) bodies 39. Evaporator Operation

The film coefficient of evaporation outside the tube is mainly determined by the flow type of falling film outside the tube. ... It consists of solar collectors, vertical plate falling film evaporator and condenser, and the water storage tank and other components. Where the riser evaporator and condenser are assembled in the same chamber, this ...

The rising-falling film evaporator is the combination of a rising film evaporator and the falling-film evaporator so that the benefits of both evaporators are incorporated into one. In applications where a very high ratio of evaporation to feed is necessary, the tube bundle can be segmented into two parts; the first that operates as a rising ...

Typically thin wall stainless steel plates are used in the sugar industry,whereas Robert evaporators require a standard tube wall thickness.This means for plate type heat exchanger a significant reduction in weight. The Balcke-Duerr EVAP plus plate type evaporator is a combination of a plate heat exchanger with a tube bundle heat exchanger.

Vertical shell-and-tube heat exchanger with a wrap-around or laterally arranged centrifugal separator. The Falling Film Evaporator, with capacity ranges of up to 150t/h and relatively small floor space requirement, is the most widely used evaporator in the process industry. Particularly well suited for temperature-sensitive products, liquids ...

We claim: 1. A plate evaporator of the rising and/or falling film type comprising a series of heat exchange plates disposed substantially vertically in spaced face-to-face relationship to define evaporation passages through which a medium to be evaporated is adapted to pass in a flow direction, said plates also defining heating medium passages alternating with said evaporation …

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