Regenerator for Catalytic Cracking Unit With External Cyclones

Regenerator for catalytic cracking unit comprising a first part occupied by a dense fluidised bed of catalyst particles and a second part arranged above the first, occupied by a low density fluidised bed of catalyst particles, said second part comprising a liner covering, by projecting on the plane of the section of said regenerator container, at least 80% of said section, said regenerator being provided with at least a cyclone for the gas / solids separation of the mixture from the low density bed, said cyclone being positioned outside said container of the regenerator.