METHOD AND APPARATUS FOR PURIFYING LIQUID

摘要

The invention is a method and apparatus for distillation of impure liquids, wherein a first amount of impure liquid is heated in a solar collector. The heating causes at least part of said impure liquid to evaporate at a pressure below atmospheric pressure. The vapour is passed through a turbine expander doing work on that to produce shaft energy. The shaft energy is transferred to a turbo compressor, the operation of which causes evaporation of a second amount of impure liquid in a second evaporator to form a second vapour. The second vapour is passed through said turbo compressor, whereby said second vapour is mixed with said first vapour. The vapour mixture is cooled in heat transfer relation to condense the vapour mixture, before it is collected.