The "expended" catalyst then flows into a fluidized-bed regenerator in which air (or in some instances air furthermore oxygen) is utilized to burn off from the coke to revive catalyst activity and in addition give the mandatory warmth for the following response cycle, cracking remaining an endothermic reaction. The "regenerated" https://cracking-forum32087.tokka-blog.com/17236548/the-2-minute-rule-for-sentry-mba