US 11,858,831 B2
Desalting apparatus using solvent and the method thereof
Jae Woo Lee, Seoul (KR); Young Chul Choi, Alpharetta, GA (US); Ou Kyung Choi, Yongin-si (KR); Gyu Dong Kim, Cary, NC (US); Dan Dan Dong, Sejong-si (KR); and Jun HO Seo, Sejong-si (KR)
Assigned to Korea University Research and Business Foundation, Seoul (KR); and RESEARCH TRIANGLE INSTITUTE, Research Triangle Park, NC (US)
Filed by Korea University Research and Business Foundation, Sejong Campus, Sejong-Si (KR); and RESEARCH TRIANGLE INSTITUTE, Research Triangle Park, NC (US)
Filed on Apr. 12, 2021, as Appl. No. 17/227,581.
Application 17/227,581 is a continuation of application No. PCT/KR2019/005394, filed on May 7, 2019.
Claims priority of application No. 10-2018-0120829 (KR), filed on Oct. 11, 2018.
Prior Publication US 2021/0230020 A1, Jul. 29, 2021
Int. Cl. C02F 1/26 (2023.01); B01D 11/04 (2006.01); B01D 9/00 (2006.01); C02F 1/52 (2023.01); C02F 103/08 (2006.01)
CPC C02F 1/265 (2013.01) [B01D 9/00 (2013.01); B01D 11/0488 (2013.01); C02F 2001/5218 (2013.01); C02F 2103/08 (2013.01); C02F 2209/02 (2013.01); C02F 2305/14 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A desalination apparatus using a solvent extraction scheme, the desalination apparatus comprising:
a source water supply module configured to supply first source water comprising salt of a first concentration and water;
a functional solvent supply module configured to supply a functional solvent of which solubility in water varies according to temperature;
a mixing module configured to generate mixture water by mixing the first source water and the functional solvent;
a first separation module configured to receive the mixture water from the mixing module and dissolve the water contained in the first source water in the functional solvent at a first temperature;
a salt crystallization module configured to receive, from the first separation module, second source water comprising salt of a second concentration that is higher than the first concentration, the second source water being the first source water from which the water has been removed; and
a second separation module configured to receive the functional solvent in which the water has been dissolved, from the first separation module, and thermally separate the water and the functional solvent at a second temperature that is higher than the first temperature,
wherein in the first separation module, the functional solvent in which the water has been dissolved, and the first source water from which the water has been removed, form water layers as the water contained in the first source water is dissolved in the functional solvent, and
wherein the first separation module further comprises a partition wall that separates the water layers.