Patent ID: 7594980

Claim:
Device for distillation of a liquid containing dissolved solids, comprising: a first pipe system comprising a lower inlet for liquid to be distilled, an outlet for distillation residue, and an upper outlet for damp, a second pipe system comprising a plurality of chambers in a row, each said chamber having an upper inlet for damp and a lower outlet for distillate, with the inlets connected in parallel and connected to a second pipe system inlet, and the outlets connected in parallel and connected to a second pipe system outlet, the first pipe system enclosing the second pipe system between the inlet for distillation liquid, the outlet for distillation residue and the outlet for damp, a gas compressor means connected between the first pipe system outlet for damp, and the second pipe system inlet, constructed and arranged for heating and compressing damp supplied from the first pipe system outlet for damp to the second pipe system inlet, means for using heat exchange to cause the heated and compressed damp in the chambers to heat the liquid to be distilled in the first pipe system, a portion of the liquid to be distilled being thereby evaporated and a portion of the damp in the chambers being thereby condensed, and means for removing the condensed damp through the outlet for distillate of the second pipe system, and removing the distillate from the device.