US 12,409,417 B2
Start-up procedure for rapid attainment of optimal steady-state performance in membrane separation
Ashwin Ravi Sankar, Bangalore (IN)
Assigned to SABIC Global Technologies B.V., Bergen op Zoom (NL)
Appl. No. 17/762,637
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed Sep. 22, 2020, PCT No. PCT/IB2020/058855
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/059137, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/906,385, filed on Sep. 26, 2019.
Prior Publication US 2022/0355250 A1, Nov. 10, 2022
Int. Cl. B01D 61/36 (2006.01); B01D 63/06 (2006.01)
CPC B01D 61/362 (2013.01) [B01D 63/068 (2013.01); B01D 2311/02 (2013.01); B01D 2311/103 (2013.01); B01D 2311/14 (2013.01); B01D 2311/16 (2013.01); B01D 2311/22 (2013.01); B01D 2313/70 (2022.08); B01D 2315/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of separating components of a liquid mixture, the method comprising:
a) dynamically soaking one or more membranes of a membrane module, the dynamically soaking comprising:
circulating the liquid mixture through the one or more membranes of the membrane module, and
increasing circulating flow rate through the membrane module at a flow rate ramp range of 5 to 100 L·hr−1·min−1 for a specified period of 1 to 1.5 hours; and
b) after the specified period, flowing the liquid mixture through the one or more membranes of the membrane module under conditions such that the liquid mixture is separated into a permeate and a retentate;
wherein the liquid mixture comprises 2-90 wt. % diol and 10-98 wt. % water.