Film Evaporation

Product application:

薄膜蒸发作为一种分离技术，蒸发装置主要用于浓缩和分离液体溶液、悬浮液和乳浊液。通常情况下，在真空条件下进行进行。

Product details

The tubular falling film evaporator is specifically suited for processing temperature sensitive products with a low viscosity and tendency for fouling. It consists of a tube bundle crowned by a proprietary liquid distribution device, which ensures an efficient and uniform distribution of the liquid to all the tubes, as well as a continuous film along the tube length.

Operation

he 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 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.

Typical Reference product

Ruihao’s falling film evaporators are widely used in the organic chemical industry, as column reboilers in (high) vacuum distillation systems.

Other typical applications are:

•Product purification

•Solvent recovery

•Concentration of solutions and slurries

•Drying

•Treatment of industrial waste streams