Systems and processes for catalytic reforming of a hydrocarbon feed stock

A process for catalytic reforming of a hydrocarbon feed stream, the process comprising:

• introducing the hydrocarbon feedstock to a first reforming unit operable to contact the hydrocarbon feedstock with a first catalyst, the contact causing reaction of at least a portion of the hydrocarbon feedstock to produce a first reforming effluent and a used first catalyst;
• passing a first portion of the first reforming effluent directly to a second reforming unit operable to contact the first portion of the first reforming effluent with a second catalyst, the contact causing reaction of at least a portion of the first reforming effluent to produce a second reforming effluent and a used second catalyst;
• passing a first portion of the second reforming effluent directly to a third reforming unit operable to contact the first portion of the second reforming effluent with a third catalyst, the contact causing reaction of at least a portion of the second reforming effluent to produce a reformate effluent and a used third catalyst;
• passing at least a portion of the used first catalyst, the used second catalyst, and the used third catalyst to at least one catalyst regenerator operable to regenerate the portions of the used first catalyst, the used second catalyst, and the used third catalyst to produce a regenerated catalyst;
• and
• recycling at least a portion of the regenerated catalyst to one or more of the first reforming unit, the second reforming unit, the third reforming unit, or combinations of these, such that the first catalyst, the second catalyst, and the third catalyst each comprise at least a portion of the regenerated catalyst.