US 12,109,539 B2
Membrane permeation gas separation method
Isam H. Aljundi, Dhahran (SA); and Abdelrahman M. Awad, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Mar. 15, 2024, as Appl. No. 18/607,160.
Application 18/607,160 is a continuation of application No. 18/154,169, filed on Jan. 13, 2023, granted, now 11,969,694.
Application 18/154,169 is a continuation of application No. 16/238,010, filed on Jan. 2, 2019, granted, now 11,571,665, issued on Feb. 7, 2023.
Prior Publication US 2024/0278191 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 69/14 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/12 (2006.01); B01D 71/02 (2006.01); B01D 71/56 (2006.01)
CPC B01D 69/148 (2013.01) [B01D 53/228 (2013.01); B01D 67/00791 (2022.08); B01D 67/00793 (2022.08); B01D 69/12 (2013.01); B01D 69/1251 (2022.08); B01D 71/0211 (2022.08); B01D 71/0212 (2022.08); B01D 71/56 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A membrane permeation gas separation method, comprising:
passing a gas mixture, comprising CO2 and at least one additional gas, through a gas filter to form a permeate that is enriched in CO2 content and a gaseous composition having a concentration of CO2 that is less than a concentration of CO2 in the gas mixture,
wherein the gas filter comprises:
a plurality of multilayered membranes fixed inside a cell;
wherein each multilayered membrane of the plurality of multilayered membranes comprises:
a first layer, comprising at least 50 wt. % of polysulfone;
a second layer, comprising at least 50 wt. % of a polyamide comprising, in condensation polymerized form, piperazine and isophthaloyl chloride; and
TiC-derived nanoparticles,
wherein the TiC-derived nanoparticles are embedded in the second layer in an amount of from 0.1 to 0.5 wt. %, based on a total weight of the second layer,
wherein the first layer directly contacts the second layer.