US 11,807,817 B2
Process for recycling supplemental fuel for regenerating catalyst
John J. Senetar, Naperville, IL (US); Joseph A. Montalbano, Elmhurst, IL (US); and Nasim Ghazinoor, Hoffman Estates, IL (US)
Assigned to UOP LLC, Des Plaines, IL (US)
Filed by UOP LLC, Des Plaines, IL (US)
Filed on May 7, 2021, as Appl. No. 17/314,286.
Claims priority of provisional application 63/023,506, filed on May 12, 2020.
Prior Publication US 2022/0333018 A1, Oct. 20, 2022
Int. Cl. B01J 23/90 (2006.01); B01J 29/90 (2006.01); C10G 11/18 (2006.01)
CPC C10G 11/182 (2013.01) [C10G 11/187 (2013.01); C10G 2300/1081 (2013.01); C10G 2300/4081 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A process for regenerating catalyst from a catalytic reaction comprising:
providing a spent catalyst stream;
distributing an oxygen supply gas stream to said spent catalyst stream;
mixing together a first stream comprising at least about 40 mol % C2+ hydrocarbons and a second stream comprising at least about 15 mol % hydrogen and at least about 20 mol % methane to provide a fuel gas stream;
distributing said fuel gas stream to said spent catalyst stream; and
combusting said fuel gas stream and carbon on said spent catalyst with the oxygen supply gas stream to provide flue gas and regenerated catalyst; wherein said fuel gas stream has respective mole fractions of methane, hydrogen and C2+ hydrocarbons bounded by a pentagonal compositional area ABODE on a ternary diagram having a vertex A at 73 mol % hydrogen, 27 mol % methane and 0 mol % C2+ hydrocarbons; vertex B at 28 mol % hydrogen, 72 mol % methane and 0 mol % C2+ hydrocarbons; vertex C at 0 mol % hydrogen, 28 mol % methane and 72 mol % C2+ hydrocarbons; vertex D at 0 mol % hydrogen, 0 mol % methane and 100 mol % C2+ hydrocarbons; and vertex E at 58 mol % hydrogen, 0 mol % methane and 42 mol % C2+ hydrocarbons,
wherein said fuel gas provides an induction time between about 0.1 and 4 seconds.