Method and system for extraction of minerals based on divalent cations from brine

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United States of America Patent

PATENT NO 11806668
APP PUB NO 20230182077A1
SERIAL NO

17644121

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Abstract

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A system and method for producing minerals from divalent ion-containing brine stream includes rejecting sulfate from a divalent-ion rich reject stream in a first nanofiltration seawater reverse osmosis (NF-SWRO) unit, producing solid calcium sulfate dihydrate and a magnesium-rich brine stream in a first concentration unit, concentrating the magnesium-rich brine stream to a saturation point of sodium chloride in a second concentration unit, producing solid sodium chloride and a supernatant product stream in a first crystallizing unit, produce a concentrated magnesium-rich bittern stream from the supernatant product stream in a third concentration unit, and at least one of producing hydrated magnesium chloride from the concentrated magnesium-rich bittern stream in a second crystallizing unit and producing anhydrous magnesium chloride by prilling the concentrated magnesium-rich bitterns stream under a hydrogen chloride atmosphere in a dry air process unit.

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Patent Owner(s)

Patent OwnerAddress
SAUDI WATER AUTHORITYP O BOX 5968 RIYADH 11432

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alamoudi, Ahmed Saleh Mohammed Al-Jubail, SA 9 7
Alwaznani, Eslam Al-Jubail, SA 3 0
Ayumantakath, Mohammed Farooque Al-Jubail, SA 8 7
Fellows, Christopher Michael Al-Jubail, SA 6 3
Ihm, Seungwon Al-Khobar, SA 11 7
Voutchkov, Nikolay Winter Springs, US 18 59

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