PROCESS AND APPARATUS FOR THE REGENERATION OF A CATALYST IN A FLUIDISED BED

摘要

Process for regenerating a catalyst by combustion of the coke deposited on the latter during a hydrocarbon conversion reaction, in which process more than 50% of the coke is burnt in at least one regeneration chamber (14) operating with a fluidised bed. …According to the invention, in the upper part of the fluidised bed the suspension of catalyst particles is slowed down because of a substantial increase in the diameter of the regeneration chamber, so as to reduce the superficial velocity of the ascending fluids which no longer contain oxygen, to a value of between 0.5 and 1.5 metres per second, that is to say to a value corresponding to the fluidisation conditions in a dense fluidised bed. ……