Process and apparatus for distributing fuel and air to a catalyst regenerator

Patent metadata

Field	Value
Publication number	US-11931728-B2
Application number	US-202117200286-A
Country	US
Kind code	B2
Filing date	Mar 12, 2021
Priority date	Mar 12, 2021
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

An oxygen gas stream is distributed to a spent catalyst stream through an oxygen nozzle of an oxygen gas distributor and a fuel gas stream is distributed to the spent catalyst stream through a fuel nozzle of a fuel gas distributor. An oxygen gas jet generated from said oxygen nozzle and a fuel gas jet generated from said fuel gas nozzle have the same elevation in the regenerator. In a regenerator, an oxygen gas distributor and a fuel gas distributor may be located in a mixing chamber. A fuel outlet of a fuel nozzle of the fuel gas distributor may be within a fifth of the height of the mixing chamber from an oxygen outlet of an oxygen nozzle of the oxygen gas distributor. In addition, clear space is provided between a fuel gas nozzle on a fuel gas distributor and a closest oxygen nozzle on an oxygen gas distributor.

First claim

The invention claimed is:

1. A process for regenerating catalyst from a catalytic reaction comprising:
providing a spent catalyst stream;
distributing an oxygen gas stream to said spent catalyst stream through oxygen nozzles;
generating an oxygen gas jet from said oxygen nozzle nozzles, wherein said oxygen nozzles are arranged at an acute angle with each other;
distributing a fuel gas stream to said spent catalyst stream through a fuel nozzle; generating a fuel gas jet from said fuel nozzle, said fuel gas jet and said oxygen gas jet having the same elevation; and
combusting said fuel gas stream and carbon on said spent catalyst with the oxygen gas stream to provide flue gas and regenerated catalyst.

2. The process of claim 1 wherein said fuel gas jet and said oxygen gas jet have the same horizontal location.

3. The process of claim 1 wherein said fuel gas jet and said oxygen gas jet are both directed downwardly.

4. The process of claim 3 further comprising a clear space between said fuel gas jet and a closest oxygen gas jet.

5. The process of claim 1 wherein said fuel gas jet and said oxygen gas jet are contiguous with each other.

6. The process of claim 2 wherein said fuel gas jet and said oxygen gas jet are concentric.

7. The process of claim 1 wherein said fuel gas jet is directed downwardly and the oxygen gas jet is directed upwardly.

8. The process of claim 1 wherein said fuel gas jet and said oxygen gas jet are both directed upwardly.

9. The process of claim 1 wherein a row of fuel gas jets alternates with a row of oxygen gas jets.

10. The process of claim 1 comprising a plurality of fuel nozzles and wherein said fuel nozzles are arranged at an acute angle with each other.

11. A process for regenerating catalyst from a catalytic reaction comprising:
providing a spent catalyst stream;
distributing an oxygen gas stream to said spent catalyst stream through oxygen nozzles;
generating an oxygen gas jet from said oxygen nozzles, wherein said oxygen nozzles are directed downwardly;
distributing a fuel gas stream to said spent catalyst stream through a fuel nozzle; generating a fuel gas jet from said fuel nozzle, said fuel gas jet and said oxygen gas jet having the same elevation; and
combusting said fuel gas stream and carbon on said spent catalyst with the oxygen gas stream to provide flue gas and regenerated catalyst.

12. The process of claim 11 wherein said fuel gas jet and said oxygen gas jet have the same horizontal location.

13. The process of claim 11 wherein said fuel gas jet and said oxygen gas jet are both directed downwardly.

14. The process of claim 13 further comprising a clear space between said fuel gas jet and a closest oxygen gas jet.

15. The process of claim 11 wherein said fuel gas jet and said oxygen gas jet are contiguous with each other.

16. The process of claim 12 wherein said fuel gas jet and said oxygen gas jet are concentric.

17. The process of claim 11 wherein a row of fuel gas jets alternates with a row of oxygen gas jets.

18. A process for regenerating catalyst from a catalytic reaction comprising:
providing a spent catalyst stream;
distributing an oxygen gas stream to said spent catalyst stream through an oxygen outlet of an oxygen nozzle;
generating an oxygen gas jet from said oxygen nozzle;
distributing a fuel gas stream to said spent catalyst stream through a fuel outlet of a fuel nozzle;
generating a fuel gas jet from said fuel nozzle, said fuel gas jet and said oxygen gas jet having the same elevation; and
combusting said fuel gas stream and carbon on said spent catalyst with the oxygen gas stream to provide flue gas and regenerated catalyst
wherein said fuel outlet of said fuel nozzle is located below an oxygen outlet of said oxygen nozzle.

19. The process of claim 18 wherein a row of fuel gas jets alternates with a row of oxygen gas jets.

20. The process of claim 18 wherein said fuel gas jet and said oxygen gas jet have the same horizontal location.

Assignees

• Uop Llc

Inventors

• Kulprathipanja Sathit
• Stine Michael A
• Sandacz Michael S

Classifications

• B01J23/90 Primary

  Regeneration or reactivation · CPC title

• B01J4/002

  Nozzle-type elements (nozzle-type reactors B01J19/26) · CPC title

• B01J38/14

  with control of oxygen content in oxidation gas · CPC title

• B01J38/18

  with subsequent reactive gas treating · CPC title

• B01J38/30 Primary

  in gaseous suspension, e.g. fluidised bed · CPC title