Back to results
US 12,409,417 B2Granted
Start-up procedure for rapid attainment of optimal steady-state performance in membrane separation
AssigneeSabic Global Technologies B.V.
InventorAshwin Ravi Sankar
Life of this patent
Estimating the term…
Abstract
Systems and methods for separating a liquid mixture are disclosed. A membrane is first soaked by the liquid mixture via dynamic soaking to reach steady state. During the soaking process, the flow rate of the liquid mixture is increased at a flow rate ramp, the temperature is increased at a temperature ramp, and the pressure drop is increased at a pressure drop ramp. After the soaking process, the liquid mixture is separated by the membrane under optimized conditions to produce a permeate and a retentate.
Claims14
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.
3 more elements
Dependencies are inferred from the claim text.