Patent ID: 11913718
Assignee: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
Field: Chemical engineering (Chemistry)
Classification: CPC F  Y | IPC F

Claim 0:
1. A method for producing power and argon, the method comprising the steps of:
providing a residual gas stream, wherein the residual gas stream is sourced from a retentate stream of a cold membrane, wherein the residual gas stream comprises nitrogen, argon, oxygen, and carbon dioxide;
purifying the residual gas stream in a front-end purification unit to remove carbon dioxide, thereby forming a purified residual gas stream; and
introducing the purified residual gas stream to a cold box, wherein the purified residual gas stream is cooled and expanded within the cold box and then fed to a distillation column system for separation therein, thereby forming an argon-enriched stream, wherein the purified residual gas stream is expanded in at least one turbine that is configured to produce power.