Home › Forums › CatCracking › FCC Operations › FCCU Conversion from Partial Burn to Full Burn This topic contains 0 replies, has 1 voice, and was last updated by Freddy Martinez 8 years, 3 months ago. Author Posts April 10, 2013 at 11:45 am #1699 Freddy MartinezParticipant Is there anyone that can explain how to convert an FCCU from partial burn to full burn? Would new equipment be needed? How would the existing process unit need to be modified? Thanks. Author Posts You must be logged in to reply to this topic.