Process for reacting oxygen carrying regenerated catalyst prior to use in a fluidized bed reactor

Patent metadata

Field	Value
Publication number	US-10688477-B2
Application number	US-201716094582-A
Country	US
Kind code	B2
Filing date	May 5, 2017
Priority date	May 9, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A process to react an oxygen containing regenerated catalyst stream prior to use in a fluidized bed reactor comprising providing a regenerated catalyst stream which comprises at least 0.001 wt % oxygen; reacting the regenerated catalyst stream with a fuel source thereby forming oxides and reducing the amount of oxygen in the regenerated catalyst stream to produce a usable regenerated catalyst stream; and injecting the usable regenerated catalyst stream into a hydrocarbon fluidized bed reactor is provided.

First claim

The invention claimed is:

1. A process to react an oxygen containing regenerated catalyst stream prior to use in a fluidized bed reactor comprising:
regenerating a used catalyst stream to produce a regenerated catalyst stream comprising a regenerated catalyst and at least 0.001 wt % oxygen;
reacting the regenerated catalyst stream with a fuel source at a temperature of from at least 400° C. and a reaction time of from 0.1 to 60 seconds thereby forming oxides and reducing the amount of oxygen in the regenerated catalyst stream to produce an oxygen-minimized regenerated catalyst stream; and
injecting the oxygen-minimized regenerated catalyst stream into a hydrocarbon fluidized bed reactor.

2. The process to react an oxygen containing regenerated catalyst stream according to claim 1 , wherein the fuel source comprises at least 0.001 wt % methane based on the combined weight of the regenerated catalyst stream and the fuel source.

3. The process to react an oxygen containing regenerated catalyst stream according to claim 1 , wherein the fuel source comprises at least 0.001 wt % coke residue based on the combined weight of the regenerated catalyst stream and the fuel source.

4. The process to react an oxygen containing regenerated catalyst stream according to claim 1 , wherein the fuel source comprises a vapor fuel.

5. The process to react an oxygen containing regenerated catalyst stream according to claim 4 , wherein reacting the regenerated catalyst stream with the vapor fuel source is at a temperature of from 550° C. to 750° C.

6. The process to react an oxygen containing regenerated catalyst stream according to claim 1 , wherein the fuel source comprises a solid fuel and wherein reacting the regenerated catalyst stream with the solid fuel source is at a temperature of from 400° C. to 700° C.

7. The process to react an oxygen containing regenerated catalyst stream according to claim 1 , wherein the fuel source comprises hydrogen.

8. A process to react an oxygen containing regenerated catalyst stream prior to use in a fluidized bed reactor comprising:
regenerating a used catalyst stream to produce a regenerated catalyst stream comprising a regenerated catalyst and at least 0.001 wt % oxygen;
reacting the regenerated catalyst stream with a solid fuel source at a temperature of from at least 400° C. and a reaction time of from 0.1 to 60 seconds thereby forming oxides and reducing the amount of oxygen in the regenerated catalyst stream to produce an oxygen-minimized regenerated catalyst stream; and
injecting the oxygen-minimized regenerated catalyst stream into a hydrocarbon fluidized bed reactor.

9. The process to react an oxygen containing regenerated catalyst stream according to claim 8 , wherein the solid fuel source comprises coke residue.

10. The process to react an oxygen containing regenerated catalyst stream according to claim 8 , wherein reacting the regenerated catalyst stream with the solid fuel source is at a temperature of from 400° C. to 700° C.

11. The process to react an oxygen containing regenerated catalyst stream according to claim 9 , wherein the fuel source comprises at least 0.001 wt % coke residue based on the combined weight of the regenerated catalyst stream and the solid fuel source.

12. The process to react an oxygen containing regenerated catalyst stream according to claim 8 , wherein the regenerated catalyst stream is reacted with a combination of the solid fuel and a vapor fuel.

13. The process to react an oxygen containing regenerated catalyst stream according to claim 8 , wherein the regenerated catalyst stream is reacted with a combination of the solid fuel and one or more of ethane, methane, ethylene, propane, propylene, hydrogen.

Assignees

• Dow Global Technologies Llc

Inventors

• Pretz Matthew T
• Li Liwei

Classifications

• B01J38/34 Primary

  with plural distinct serial combustion stages · CPC title

• C10G11/182 Primary

  Regeneration · CPC title

• C07C5/333

  Catalytic processes · CPC title

• B01J38/18

  with subsequent reactive gas treating · CPC title

• B01J38/30

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