CPC C10G 11/182 (2013.01) [C10G 11/187 (2013.01); C10G 2300/1081 (2013.01); C10G 2300/4081 (2013.01)] | 15 Claims |
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.
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