Process for regenerating catalyst from a fluidized catalytic process
AssigneeUop LLC
InventorsJan De Ren, Sakthivelan Maadasamy Durai, Rakshit Mehta
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Abstract
A process for regenerating catalyst from a fluidized catalytic process is disclosed. The process comprises passing a CO2 oxidation stream to a regenerator in which coke is combusted from catalyst to provide a CO2 rich flue gas stream. The CO2 rich flue gas stream is separated into an underflow stream comprising catalyst fines and a CO2 rich flue gas overflow stream. The overflow stream is separated into a recycle stream and a power recovery stream. The recycle stream of the overflow stream is recycled to the regenerator.
Claims20
A process for regenerating catalyst from a fluidized catalytic process comprising:
- passing a CO2 oxidation stream to a regenerator in which coke is combusted from catalyst to provide a CO2 rich flue gas stream;
- separating said CO2 rich flue gas stream into an underflow stream comprising catalyst fines and a CO2 rich flue gas overflow stream;
- separating said overflow stream into a recycle stream and a power recovery stream;
- and
- passing said recycle stream to the regenerator.
A process for regenerating catalyst from a fluidized catalytic process comprising:
- passing a CO2 oxidation stream to a regenerator in which coke is combusted from catalyst to provide a CO2 rich flue gas stream;
- separating said CO2 rich flue gas stream into an underflow stream comprising catalyst fines and a CO2 rich flue gas overflow stream;
- separating said overflow stream into a recycle stream and a power recovery stream;
- and
- combining said recycle stream of the overflow stream with an air stream and a diluent stream comprising CO2 to provide said CO2 oxidation stream.
A process for regenerating catalyst from a fluidized catalytic process comprising:
- passing a CO2 oxidation stream to a regenerator in which coke is combusted from catalyst to provide a CO2 rich flue gas stream;
- separating said CO2 rich flue gas stream into an underflow stream comprising catalyst fines and a CO2 rich flue gas overflow stream;
- separating said overflow stream into a recycle stream and a power recovery stream;
- reducing a temperature of said recycle stream in a heat exchanger to provide a heat exchanged recycle stream and compressing the heat exchanged recycle stream in a compressor to provide a heat exchanged and compressed recycle stream having a temperature from about 260° C. (500° F.) to about 760° C. (1400° F.);
- and
- combining said heat exchanged and compressed recycle stream with an oxygen containing stream and a diluent stream comprising CO2 to provide said CO2 oxidation stream.
Dependencies are inferred from the claim text.