System for a heat balanced fcc forlight hydrocarbon feeds
AssigneeKellogg Brown & Root LLC
InventorPhillip K. Niccum
Life of this patent
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Abstract
Catalyst regenerators and methods for using same. The regenerator can include a regenerator housing containing a dense phase catalyst bed for receiving a catalyst to be regenerated. A heater can be disposed in the regenerator and can have a fuel nozzle configured to eject a mixture of fuel and an oxygen-lean gas for combustion to supplement the heat to satisfy the reactor heat demand when a light feedstock cracked that may not provide sufficient coke formation on the catalyst to fully satisfy the reactor heat demand.
Claims20
A catalyst regenerator, comprising:
- a regenerator housing containing a dense phase catalyst bed configured to receive a catalyst to be regenerated, wherein the catalyst is at least partially covered with a carbonaceous coke that is combusted to provide a heated catalyst;
- a heater disposed in the regenerator comprising:
- a body having a first end and a second end;
- a fuel nozzle disposed within the body and configured to eject a mixture of fuel and oxygen-lean gas;
- and
- a plurality of windows defined near the first end of the body where a vaporized mixture of fuel and oxygen-lean gas exits the body into the dense phase catalyst bed.
A heater, comprising:
- a body having a first end and a second end;
- a fuel nozzle disposed within the body and configured to eject a mixture of fuel and oxygen-lean gas;
- and
- a plurality of windows defined near the first end of the body where a vaporized mixture of fuel and oxygen-lean gas exits the body.
A method of supporting the regeneration of a catalyst, comprising:
- ejecting a mixture of fuel and oxygen-lean gas from a fuel nozzle located in a body of a heater;
- drawing in a heated catalyst from a dense phase catalyst bed surrounding the heater and disposed within a regenerator;
- vaporizing at least a portion of the mixture of fuel and oxygen-lean gas to form a vaporized mixture of fuel and oxygen-lean gas;
- directing the vaporized mixture of fuel and oxygen-lean gas out of the body and into the dense phase catalyst bed;
- and
- combusting the vaporized mixture of fuel and oxygen-lean gas in the dense phase catalyst bed to support a combustion of carbonaceous coke disposed on the surface of the catalyst.
Dependencies are inferred from the claim text.