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Vertical shell-and-tube heat exchanger, with a laterally or concentrically arranged centrifugal separator. The liquid to be concentrated is supplied to the top of the heating tubes and distributed in such a way as to flow down the inside of the tube walls as a thin film. The liquid film starts to boil due to the external heating of the heating tubes and is partially evaporated as a result. The downward flow, caused initially by gravity, is enhanced by the parallel, downward flow of the vapor formed.
Residual film liquid and vapor is separated in the lower part of the calandria and in the downstream centrifugal droplet separator. It is essential that the entire film heating surface, especially in the lower regions, be evenly and sufficiently wetted with liquid. Where this is not the case, dry spots will result that will lead to incrustation and the build-up of deposits. For complete wetting it is important that a suitable distribution system is selected for the head of the falling film evaporator.
Wetting rates are increased by using longer heating tubes, dividing the falling film evaporator into several compartments or by recirculating the product. Vertical shell-and-tube heat exchanger of short tube length, with lateral separator arranged at the top.
A plate-and-frame configuration employs special plates, with alternate product and heating channels. The plates are sealed by gaskets located within specially designed slots that do not require adhesives. These gaskets can be inserted and removed without special tools. Decanter Centrifuge Clarifying Decanter. Service Life cycle service Service hotline Financial services Remote support. Industrial effluent Industrial waste water Zero liquid discharge.
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Evaporation Technology Falling Film Evaporator Vertical shell-and-tube heat exchanger, with a laterally or concentrically arranged centrifugal separator. Contact us Get a quote. Particular features Best product quality — due to gentle evaporation, mostly under vacuum, and extremely short residence times in the falling film evaporator. High energy efficiency — due to multiple-effect arrangement or heating by thermal or mechanical vapor recompressor, based upon the lowest theoretical temperature difference.
Simple process control and automation — due to their small liquid content falling film evaporators react quickly to changes in energy supply, vacuum, feed quantities, concentrations, etc. This is an important prerequisite for a uniform final concentrate. Flexible operation — quick start-up and easy switchover from operation to cleaning, uncomplicated changes of product. Particularly suited for temperature-sensitive products. For liquids which contain small quantities of solids and have a low to moderate tendency to form incrustations.
Related products. Direct Steam Sterilization Concentrated food products need to be sterilized before they can be stored, packed or dried. Natural Circulation Evaporator Vertical shell-and-tube heat exchanger of short tube length, with lateral separator arranged at the top.
Plate Evaporator A plate-and-frame configuration employs special plates, with alternate product and heating channels. Go to product finder. GEA Insights. See more. Let's stay in touch! Sign up. Contact us We are here to help! With just a few details we will be able to respond to your inquiry. Contact us.
Falling Film Evaporator