Non Polished Falling Film Evaporator, For Chemical Industry, Food Industry, Pharmaceutical Industry, Water Treatment Industry

In falling film evaporators, the liquid product usually enters the evaporator at the head of the evaporator. In the head, the product is evenly distributed into the heating tubes. The liquid enters the heating tube and forms a thin film on the tube wall where it flows downwards at boiling temperature and is partially evaporated. In most cases, steam is used for heating the evaporator. The product and the vapor both flow downwards in a parallel flow. This gravity-induced downward movement is increasingly augmented by the co-current vapor flow. The separation of the concentrated product from its vapor takes place in the lower part of the heat exchanger and the vapor/liquid separator.

Our film evaporators treat your temperature-sensitive products in a gentle way: The use of vacuum and the short residence time along the heated surface are two essential parameters in preventing secondary reactions and preserving organoleptic properties.

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 tube length, driven by gravity.