Method and plant for chemical looping oxidation-reduction combustion of a gaseous hydrocarbon feedstock with in-situ catalytic reforming of the feed

A method for chemical looping oxidation-reduction combustion of a gaseous hydrocarbon feed, comprising:

• performing combustion of a gaseous hydrocarbon feed within a fluidized-bed reduction zone through contact with a redox active mass in form of particles,
• performing catalytic reforming of said feed within said reduction zone on contact with a reforming catalyst distinct from the redox active mass, said catalyst being in a form of untransported fluidized particles confined within and not transported out of said reduction zone to produce syngas,
• performing combustion of the syngas produced by catalytic reforming within said reduction zone through contact with said redox active mass, and
• sending to a fluidized-bed oxidation zone the redox active mass particles that have stayed in the reduction zone in order to oxidize said redox active mass particles through contact with an oxidizing gas stream.