Method of recovering energy from a fluid catalytic cracking...

Details Method of recovering energy from a fluid catalytic cracking... Method of recovering energy from a fluid catalytic cracking...

2011-04-12

2011-04-12

Hill, Jr., Robert J (Department: 1774)

Power plants

Combustion products used as motive fluid

C208S106000, C208S113000

Reexamination Certificate

active

07921631

ABSTRACT:
In at least one embodiment of the present invention, a method of recovering energy from a FCC unit having a reactor and a regenerator for overall CO2reduction is provided. The method comprises cooling syngas to a predetermined low temperature to define cooled syngas. A turbo-expander including a first compressor is provided. The turbo-expander train is configured to combust and expand gas to drive the first compressor. The cooled syngas is compressed with the first compressor to define compressed syngas. A first stream of gas comprising CO2and a second stream of gas comprising CO are separated from the compressed syngas. O2and the first and second streams of gas are introduced to the turbo-expander train. The first stream of gas is expanded and the second stream of gas is combusted and expanded with the O2to recover energy, driving the first compressor and producing the syngas.

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