Temperature swing solvent extraction for descaling of feedstreams

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12209034
APP PUB NO 20230242418A1
SERIAL NO

18131444

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Abstract

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Systems and methods of performing temperature swing solvent extraction (TSSE) descaling of produced water and desalination of high-salinity brines, e.g., those having a total dissolved solids (TDS) greater than about 250,000 ppm are capable of producing descaled water products including less than about 5% weight percent TDS. The brine/produced water feedstreams and combined with a solvent having temperature-dependent water solubility at a temperature TL. Water is extracted from the feedstream into the solvent to form a water-in-solvent extract component and a raffinate component, from which a solid phase can be precipitated as more water is portioned in the solvent and basicity increases. Heating of the water-in-solvent extract component reduces the solubility of the water therein, producing a biphasic mixture of dewatered solvent and descaled water that can be separated. Because these systems and methods do not require a phase change of water, these products are achieved with significantly higher energy efficiencies when compared to evaporation-based thermal methods.

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Patent Owner(s)

  • THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Billinge, Ian New York, US 4 1
Boo, Chanhee Seoul, KR 4 1
Dach, Eliza New York, US 4 1
Shah, Kinnari New York, US 4 1
Winton, Robert Seattle, US 4 1
Yip, Ngai Yin Summit, US 6 28

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