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We have a semi regen platformer unit and catalyst type UOP-R56. During the regenerating after the oxidation step we stopped at this step The problem of providing electricity occurred and we did not complete the rest of the steps, now the reactors under positive pressure by hydrogen reformer purity of H2 70%
Is this situation adversely affects the catalyst after the oxidation step?
And what needs to be done in this case?
 
Answers
12/02/2017 A: Virendra Kapoor, Petroleum Refining Consultants, vkkapoor9@yahoo.com
UOP recommends regeneration procedure & consequences of deviation. Proper dispersion of Pt that has been attained till oxidation and good chloride amount of chlorine on the catalyst retained till then is nice for regenerated catalyst. However larger concn of moisture in the reactor due to residual water in the reaction section in hydrogen atmosphere causes initial crystalline growth of Pt at higher temperatures. Some of the catalyst chloride may also be leached. It may not cause appreciable concern except a suspected lower cycle length & probably a little higher SOR RIT. By now, the start up might have been done revealing the consequences.
10/02/2017 A: Patrick Bullen, UOP, patrick.bullen@uop.com
If the unit was stopped before oxidation step is complete, it needs to be repeated as the Platinum may re-agglomerate. If there is a long stop between oxidation and reduction steps, oxidation should be repeated for the same reason.
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