Back to results
US 2024/0198282 A1Published application
Tunable h2s and co2 condensability membranes for h2s and co2 removal from sour natural gas
AssigneeSaudi Arabian Oil Company
InventorsYang Liu, Junyan Yang, Milind M. Vaidya
Life of this patent
Estimating the term…
Abstract
This disclosure relates to polymer membranes and methods of using said membranes for gas separation applications, such as removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from natural gas, particularly under rich natural gas and/or high pressure environments.
Claims27
A method of separating carbon dioxide (CO2) and hydrogen sulfide (H2S) from natural gas, comprising:
- providing a polymer membrane comprising a polymer selected from 6FDA-DAM/DABA (3:1) and 6FDA-DAM/DABA (5:1);
- introducing a natural gas stream to the polymer membrane, wherein the natural gas stream comprises CO2, H2S, and methane (CH4), and the natural gas stream comprises at least about 5% H2S by volume;
- and
- removing carbon dioxide (CO2) and hydrogen sulfide (H2S) from the natural gas.
1 more element
A method of separating carbon dioxide (CO2) and hydrogen sulfide (H2S) from natural gas, comprising:
- providing a polymer membrane comprising a polymer selected from 6FDA-DAM/DABA (3:1) and 6FDA-DAM/DABA (5:1);
- introducing a natural gas stream to the polymer membrane, wherein the natural gas stream has a pressure of at least 500 psig;
- and
- removing carbon dioxide (CO2) and hydrogen sulfide (H2S) from the natural gas.
1 more element
A method of preparing a polymer membrane, comprising:
- providing a polymer solution comprising a solvent and a polymer, wherein the polymer is selected from 6FDA-DAM/DABA (3:1) and 6FDA-DAM/DABA (5:1);
- evaporating the solvent to form a polymer membrane film;
- and
- thermally treating the polymer membrane film to form the polymer membrane.
1 more element
Dependencies are inferred from the claim text.