Method of purifying brine for electrolytic chemical production

Details Method of purifying brine for electrolytic chemical production Method of purifying brine for electrolytic chemical production

1986-02-21

1988-05-24

Wyse, Tom

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210779, 210798, 210805, C02F 158

Patent

active

047464410

ABSTRACT:
The brine purifying system employs a multistage filtering apparatus comprising a plurality of the same filter units piled up one over another to form a plurality of cascaded filtering stages. When the filter layers of the filter units are clogged with unsoluble matters, the operation of the multistage filtering apparatus is interrupted, then a solvent for the unsoluble matters is circulated through the multistage filtering apparatus to remove the unsoluble matters arrested by the filter layers by dissolving the same therein. Then, a washing liquid is circulated through the multistage filtering apparatus to wash the multistage filtering apparatus completely. The solvent and the washing liquid used for regenerating and washing the multistage filtering apparatus are recovered and are used for dissolving salt to prepare saturated brine. The unsoluble matters thus removed from the filter layers are removed by being precipitated in a precipitating tank.

REFERENCES:
patent: 3577341 (1971-05-01), Keith, Jr. et al.
patent: 3929639 (1975-12-01), Turner et al.
patent: 4028241 (1977-06-01), Davis et al.
patent: 4157962 (1979-06-01), Huang et al.
patent: 4340487 (1982-07-01), Lyon
patent: 4343621 (1982-08-01), Benninger et al.

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