Method and system for adjusting the temperature profile of a catalyzer in a reformer

A method for adjusting the temperature profile of a catalyst in a reformer

• wherein the reformer comprises an oxidation zone and a reforming zone featuring the catalyst, the reforming zone being in thermal contact with the oxidation zone,
• wherein the reformer comprises a first media feed zone and a second media feed zone,
• wherein the oxidation zone comprises a first oxidation zone end portion facing the first media feed zone and facing away from the second media feed zone, and a second oxidation zone end portion facing the second media feed zone and facing away from the first media feed zone,
• wherein the reforming zone comprises a first reforming zone end portion facing the first media feed zone and facing away from the second media feed zone, and a second reforming zone end portion facing the second media feed zone and facing away from the first media feed zone,
• wherein the method comprises the steps of:
• feeding fuel and air to the first media feed zone to generate a fuel/air mixture,
• introducing the fuel/air mixture into the oxidation zone via its first oxidation zone end portion and performing a total oxidation reaction with at least a proportion of the fuel supplied to the first media feed zone in the oxidation zone,
• feeding fuel to the second media feed zone,
• combining at least part of the flue gas generated in the oxidation zone and emerging therefrom via the second oxidation zone end portion with the fuel supplied to the second media feed zone to generate a flue gas fuel mixture,
• introducing the flue gas fuel mixture into the reforming zone via its second reforming zone end portion and performing a catalytic reforming in the reforming zone, and
• discharging reformate from the reforming zone via its first reforming zone end portion,
• characterized in that the feed rates of the air and fuel supplied to the first media feed zone (20) as well as the feed rates of the fuel supplied to the second media feed zone are adapted to each other so that the temperature profile of the catalyst is as wanted, an air ratio relative to the process overall assuming or maintaining a predefined value.