METHOD FOR OBTAINING EVAPORATED TABLE SALT BY BRINE PROCESSING Russian patent published in 2016 - IPC C01D3/00 C01D3/04 C01B3/08 E21B31/03 

FIELD: chemistry.

SUBSTANCE: reservoir is washed with water with the consumption of 100-250 m³/hour, brine is collected from the reservoir with the following pumping into utilisation holes, and on reaching the concentration of brine NaCl of 300 g/dm³ - 316 g/dm³ is directed to the salt plant, where a part of the crude brine goes into the first apparatus of a four-body vacuum-evaporation installation for soda-caustic purification from Ca²⁺ and Mg²⁺ ions and the purified brine is supplied into the reservoir of the purified brine and is supplied into the first case of the evaporation installation by pump, and sludge sewages are supplied to the installation. The other part of the crude brine from the reservoir of the crude brine is supplied into the second, third and fourth bodies of the four-body vacuum-evaporation installation by pump. The brines boil in the cases, which results in the formation of salt pulp, which goes to the following centrifugation and drying with obtaining dry commodity salt, and a condensate is formed in the volume of 56.5% from the volume of the processed brine, which is supplied to salt dilution into cavities. The brine from the centrifuges is directed into the cycle for further processing.

EFFECT: acceleration of underground reservoirs washing away and reduction of their building term for more than two years, reduction of costs for building of underground reservoirs becomes possible, and earlier introduction of active powers of underground storing is provided.

1 dwg