METHOD AND APPARATUS FOR PRODUCING AT LEAST ONE ARGON-ENRICHED FLUID AND AT LEAST ONE OXYGEN-ENRICHED FLUID FROM A RESIDUAL FLUID

摘要

The invention relates to a method for producing an argon-enriched fluid and an oxygen-enriched fluid from a residual fluid resulting from a method for purifying a residual gas formed from oxy-fuel combustion fumes, wherein said method comprises purifying the residual gas by a purification method at a low temperature in order to produce a fluid enriched with carbon dioxide (119) and a residual fluid lean in carbon dioxide (120), pretreating the residual fluid lean in carbon dioxide in order to obtain a flow enriched with carbon dioxide and a flow (123) lean in carbon dioxide, treating the flow lean in carbon dioxide by a cryogenic technique so as to extract at least an argon-enriched fraction (127), an oxygen-enriched fraction (126), and a fraction (125) lean in argon and/or oxygen.