Method and system for sulfur, carbon dioxide and hydrogen recovery

A method for sulfur (S), carbon dioxide (CO2) and hydrogen (H2) recovery from a gaseous stream, the method comprising:

• providing a first gaseous entry stream and optionally a second gaseous entry stream, both comprising hydrogen sulfide (H2S) and CO2;
• a sulfur recovery step for recovering sulfur (S) from at least part of the H2S provided with the gaseous entry stream(s) to produce a liquid phase comprising sulfur (S),
• wherein recovering comprises a reaction of the gaseous entry stream(s) with oxygen enriched air, wherein the oxygen enriched air contains preferably at least 30% oxygen,
• wherein the sulfur recovery step also produces a gaseous outlet stream comprising CO2 and H2;
• a CO2 recovery step for recovering at least part of the CO2 provided with the gaseous outlet stream;
• an H2 recovery step for recovering at least part of the H2 provided with the gaseous outlet stream;
• and
• an incinerating step for incinerating an off-gas derived from the gaseous outlet stream, wherein at least 50% of an energy required for the incinerating is provided by the recovered H2.