Regeneration enclosure and process for the regeneration of a catalyst for aromatics production or reforming with improved oxychlorination ability

摘要

In the process for the re-generation of catalysts used in the production of aromatic hydrocarbons or for reforming, the catalyst comprises a support, a noble metal and chlorine, and the process consists of successive stages of combustion, oxychlorination and calcination : in the oxychlorination stage, a chlorinating agent, an O2-containing gas and water are introduced, in proportions such that the molar ratio H2O / HCl is 3 - 50.The stage is operated in the presence of an oxychlorination gas containing less than 21% O2 and at least 50 ppm of Cl(calculated as HCl) and at 350 - 600 degrees C. Also claimed, is the re-generation reactor used in the process.