UNIT FOR SEPARATE EXTRACTION OF SALTS FROM SALT SOLUTION Russian patent published in 2024 - IPC B01D1/26 B01D9/02 C02F1/04 

FIELD: various technological processes.

SUBSTANCE: present invention relates to an apparatus for separate extraction of salts from a salt solution. This plant can be used for extraction of salts from solutions obtained at desalination plants, including membrane type, from waste water of chemical, metallurgical, agricultural and other types of industries, including power engineering enterprises. Proposed plant comprises: a concentration unit, which includes a multistage flash boiling evaporator (FBE), comprising successively installed stages, each of which comprises an expansion chamber and a condensation chamber, at the outlet of which there are concentrate and distillate discharge pipes, respectively, and at least two salt crystallisation units, each of which contains a heater, the cavity of which is connected in series to the boiling chamber and the salt separation and removal system. At that, the FBE stage expansion chamber cavity is equipped with a steam supply channel into the cavity for the heater hot coolant circulation, while outlet branch pipe of the cavity for circulation of hot heat carrier is equipped with a condensate discharge channel into the cavity of the condensation chamber of the FBE stage, and the cavity of the steam space of the boiling chamber is connected to the cavity of the expansion chamber of the FBE stage.

EFFECT: increased energy efficiency of the installation for separate extraction of salts from salt solution.

7 cl, 3 dwg