Process with continuous catalytic regeneration for treating a hydrocarbon feedstock

A process for the catalytic reforming or dehydrogenation of a hydrocarbon feedstock with continuous catalytic regeneration, in which process said feedstock is successively circulated in a plurality of reaction zones in series (R1, R2, R3, R4), a catalyst circulating in a moving bed successively in the plurality of reaction zones in series (R1, R2, R3, R4) and flowing from an upstream end to a downstream end of each of the reaction zones and being transported by a carrier gas phase g1 from the downstream end of one reaction zone to the upstream end of the next reaction zone, wherein said carrier gas phase g1 has a density, measured under operating conditions at a temperature T of between 20° and 550° C., and at an absolute pressure P of between 0.1 and 0.7 MPa, which is greater than 1 kg/m3,

• wherein
• said carrier gas phase g1 comprises at least one gas having a molar mass higher than that of hydrogen, which originates from the reforming process itself, as recycling reagent or product or by-product of the reforming,
• or
• the temperature of said carrier gas phase g1 is adjusted to a temperature T3 below 200° C. to increase the density thereof,
• or
• the pressure of said carrier gas phase g1 is adjusted to a pressure P3 of at least 1 MPa to increase the density thereof.