US 12,220,662 B2
Dehydration of a mixture containing a diol with high water content using optimized pervaporation process
Ashwin Ravi Sankar, Bangalore (IN); and Deepak Sharma, Bangalore (IN)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/419,197
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Jan. 9, 2020, PCT No. PCT/IB2020/050152
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/144621, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/790,407, filed on Jan. 9, 2019.
Prior Publication US 2022/0062824 A1, Mar. 3, 2022
Int. Cl. B01D 61/36 (2006.01); B01D 69/02 (2006.01); B01D 69/08 (2006.01); B01D 69/14 (2006.01); B01D 71/02 (2006.01)
CPC B01D 61/3621 (2022.08) [B01D 69/02 (2013.01); B01D 69/08 (2013.01); B01D 69/141 (2013.01); B01D 69/148 (2013.01); B01D 71/027 (2013.01); B01D 2325/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of dehydrating a mixture of organic liquid and water, the method comprising:
feeding the mixture to a membrane, wherein the mixture comprises a minimum of 85 wt. % water and a maximum of 15 wt. % organic liquid;
soaking the membrane with a soaking liquid comprising 25 to 30 wt. % of an organic liquid and 70 to 75 wt. % water;
subjecting the mixture in the membrane to process conditions sufficient to cause pervaporation, wherein the process conditions comprise a temperature in a range of 85 to 160° C.; and
recovering a permeate comprising a higher wt. % of water than the wt. % of water in the mixture and a retentate comprising a higher wt. % of organic liquid than the wt. % of the organic liquid in the mixture.