Patent ID: 8608941

Claim:
A method of integrating fluid catalytic cracking product naphtha dehydrogenation with catalytic reforming, the method comprising: heating a naphtha from a hydrocracking zone and naphtha from a fluid catalytic cracking zone and feeding them to a dehydrogenation zone, the dehydrogenation zone comprising a first portion of regenerated reforming catalyst from a catalyst regenerator; moving the regenerated reforming catalyst downward through the dehydrogenation zone as it cokes to become lightly coked catalyst; sending a product stream of the dehydrogenation zone to an aromatics extraction unit; withdrawing an aromatic-rich extract and a raffinate from the aromatics extraction unit; heating straight run naphtha and the raffinate and feeding them to a first reforming zone, the first reforming zone comprising a second portion of regenerated reforming catalyst from the catalyst regenerator; moving the regenerated reforming catalyst downward through the first reforming zone as it starts to become lightly coked catalyst; removing the lightly coked catalyst from the first reforming zone and the dehydrogenation zone and feeding the lightly coked catalyst from both the first reforming zone and the dehydrogenation zone to the top of the second reforming zone; heating an effluent from the first reforming zone and feeding it to a second reforming zone; moving the lightly coked reforming catalyst downward through the second reforming zone as it becomes partially coked reforming catalyst; removing the partially coked reforming catalyst from the second reforming zone and feeding it to a third reforming zone; heating an effluent from the second reforming zone and feeding it to the third reforming zone to produce a reformate, the third reforming zone comprising the partially spent reforming catalyst; moving the partially spent reforming catalyst downward through the third reforming zone as it becomes a substantially spent catalyst; removing the substantially spent reforming catalyst from the third reforming zone; and regenerating the substantially spent reforming catalyst from the third reforming zone in the catalyst regenerator.