Process and vessel for regenerating a reforming catalyst

A process for regenerating a catalyst for the production of aromatic hydrocarbons or for reforming, comprising the following steps:

• a step a) for combustion in a combustion zone A comprising at least two combustion beds A1 and A2 in series;
• a step b) for oxychlorination in an oxychlorination zone B comprising at least one oxychlorination bed, said oxychlorination zone B being supplied with at least one chlorinating agent, at least with water or water precursors and at least with an oxygen-containing gas;
• a step c) for calcining in a calcining zone C comprising at least one calcining bed supplied with a gas comprising at least a makeup of dry air;
• in which:
• said catalyst comprises a support, chlorine and at least one noble metal and moves in series in beds A1 then A2, then in the oxychlorination zone B then in the calcining zone C;
• the effluent gas from bed A1 is sent to bed A2;
• the gas supplying the calcining zone C moves freely to the oxychlorination zone B;
• a makeup of oxygen-containing gas is made at least to the inlet to the calcining zone;
• a portion of the effluent gas from the oxychlorination zone is recycled via at least one scrubbing section D towards the inlet to combustion beds A1 and A2;
• the effluent gas from the oxychlorination zone is recycled, passing via a blower, without passing through said scrubbing section D, at least in part to the combustion bed A2 and at least in part to the inlet to the oxychlorination zone B;
• a portion of the effluent gas from combustion bed A2 is recycled via at least said scrubbing section D to the inlet to beds A1 and A2.