APPARATUS FOR FRESHENING OF SEA WATER Russian patent published in 2007 - IPC C02F1/04 B01D3/00 

FIELD: freshening of salt water for producing of sweet water from sea water.

SUBSTANCE: apparatus has mass exchanging column-type unit with countercurrent flow of hot sea water and air, heater for increasing temperature of sea water to temperature at which sea water is to be introduced into mass exchanging column-type unit, condenser, and air flow inducer. Apparatus has additional heater for increasing temperature of condensate to value exceeding water temperature value at which it is introduced into mass exchanging column-type unit. Condenser is formed of second column-type mass exchanging unit with countercurrent flow of cooled condensate and gas-and-vapor mixture from first column-type mass exchanging unit. Hot condensate discharge line for discharging of hot condensate from condenser is connected to additional heater and is equipped with connection pipe for discharging of part of product condensate. Heater is made in the form of surface heat exchanger with countercurrent flow of basic sea water and condensate from additional heater. Cooled condensate output is connected to cooled condensate collecting tank which, in its turn, is connected to condenser. Apparatus has heater for additional flow of basic sea water, said heater being connected to cooled condensate collecting tank and to heated sea water collector equipped with vacuum creating unit. Apparatus has additional heater for increasing temperature of condensate. Said heater is made in the form of contact water heater with water-cooled fire box.

EFFECT: enhanced utilization of heat supplied and, consequently, increased efficiency of apparatus, reduced metal usage and decreased sizes.

3 cl, 1 dwg