Distillation process and device, in particular for the preparation of soft water from saline solutions

摘要

Distiller comprising at least one heated evaporation surface in contact with which there is a saline solution and a cooled condensation surface in contact with which the water vapour condenses. According to the invention a film of saline solution is made to flow under gravity over the lower face 2b of the heated plate 2, adhering to the said surface by capillarity and the vapour is condensed on the facing hydrophobic upper face 3a of a cooled plate 3. The invention applies to the preparation of soft water from saline solutions, in particular in underdeveloped countries. <IMAGE>