Patent ID: 11931698
Assignee: UOP LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 4:
5. A process for separating at least hydrogen sulfide from a mixture of gases using a thin film composite gas separation membrane, the process comprising: (a) providing the thin film composite gas separation membrane which is permeable to at least hydrogen sulfide;
(b) contacting the mixture on one side of the membrane to cause at least hydrogen sulfide to permeate the membrane; and (c) removing from the opposite side of the membrane a permeate gas composition comprising a portion of at least hydrogen sulfide which permeated said membrane,
wherein the thin film composite gas separation membrane comprises a polyether block amide copolymer coating layer on a nanoporous asymmetric polyacrylonitrile support membrane with nanopores on a skin layer surface of the polyacrylonitrile support membrane and gelatin polymers inside nanopores on the skin layer surface of the support membrane.