DEVICE AND METHOD FOR LIQUID TREATMENT BY MECHANICAL VAPOR RECOMPRESSION

摘要

The current invention concerns an indirect heat exchange evaporator device and method for liquid treatment by mechanical vapor recompression comprising a fixed fluid-tight evaporator housing; an inlet for feeding liquid to be evaporated into the housing and an outlet from the housing for liquid concentrated by evaporation; an outlet from the housing for discharging from said housing vapor boiled off from the liquid by evaporation; a plurality of heating elements within the housing mounted on a common horizontal axis, each of said heating elements having an outer surface for contact with said liquid to be evaporated within the housing and having an internal passage for heating medium and an element inlet and an element outlet for the heating medium, whereby said heating elements comprise an essentially hollow disc-like shape defining a heating element axis and mounted along its heating element axis on said common horizontal axis within said housing.