Home › Forums › CatCracking › FCC Process › 2 stage Regenerator in full combustion mode This topic contains 0 replies, has 1 voice, and was last updated by stulp 3 years, 5 months ago. Author Posts May 30, 2018 at 8:34 am #28595 stulpParticipant Do you have any experience with a two stage regenerator in full combustion mode? Is it possible? We are concern about the afterburning. Author Posts You must be logged in to reply to this topic.