Cogeneration process for a regenerator in an FCC system
AssigneesUop LLC, BP Corporation North America Inc.
InventorJames F. McGehee
Life of this patent
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Abstract
A cogeneration process is provided for a regenerator in a fluidized catalytic cracking system having a reactor and a regenerator. The process includes introducing flue gas from the regenerator into a heating unit to produce heated flue gas at a temperature of at least about 900° C. The heated flue gas is introduced into an expander. Steam is heated with the heated flue gas to produce heated steam. The heated steam is introduced into a turbine to extract energy from the steam.
Claims19
A cogeneration process for a regenerator in a fluidized catalytic cracking system having a reactor and a regenerator, comprising:
- introducing flue gas from the regenerator into a heating unit to produce heated flue gas at a temperature of at least about 900° C., the regenerator comprising a catalyst cooler;
- introducing the heated flue gas into an expander;
- providing steam from the catalyst cooler;
- heating the steam with the heated flue gas to produce heated steam at a pressure of at least about 30 bar;
- and
- introducing the heated steam into a turbine to extract energy from the steam.
A cogeneration system for a regenerator in a fluidized catalytic cracking system having a reactor and a regenerator, comprising:
- a heating unit in fluid communication with flue gas from the regenerator and configured to heat the flue gas to a temperature of at least about 900° C.;
- an expander in fluid communication with the heating unit for producing electricity from the heated flue gas stream;
- a steam source provided by a catalyst cooler for the regenerator;
- a heat exchanger in fluid communication with the heating unit and the steam source for heating the steam source with the heated flue gas stream;
- and
- a steam turbine in fluid communication with the heated steam from the heat exchanger, the steam turbine configured to generate electricity.
Dependencies are inferred from the claim text.