Combustion of off-gasses using enriched air from an electrolytic process

A chemical plant, said plant comprising:

• a combustible off-gas stream
• an electrolysis section
• a first steam feed
• at least one burner
• a first heat exchanger
• a water stream
• wherein said electrolysis section is arranged to receive at least a portion of said first steam feed and electrolyze it to provide a hydrogen stream and an oxygen-enriched stream;
• wherein at least a portion of said oxygen-enriched stream and at least a portion of said off-gas stream are arranged to be combusted in said at least one burner so as to provide a combusted gas stream;
• wherein said first heat exchanger is arranged to receive at least a portion of said combusted gas stream, and said water stream, where said first heat exchanger is arranged to transfer heat from the at least a portion of said combusted gas stream to said water stream so as to provide a cooled combusted gas stream and a steam stream,
• wherein said plant comprises a steam drum, said steam drum being arranged to receive at least a portion of said steam stream from the first heat exchanger, output a dry steam stream, and provide a portion of said dry steam stream as at least a portion of said first steam feed to the electrolysis section.