Process for transferring catalyst and an apparatus relating thereto

Patent metadata

Field	Value
Publication number	US-9370758-B2
Application number	US-201313850440-A
Country	US
Kind code	B2
Filing date	Mar 26, 2013
Priority date	Mar 26, 2013
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

One exemplary embodiment can be a process for transferring catalyst in a fluid catalytic cracking apparatus. The process can include passing the catalyst through a conveyor wherein the conveyor contains a screw for transporting the catalyst.

First claim

The invention claimed is:

1. A process for transferring catalyst in a fluid catalytic cracking apparatus, comprising:
passing the catalyst through a conveyor wherein the conveyor contains a screw for transporting the catalyst, wherein the screw comprises a shaft adapted to receive cooling water.

2. The process according to claim 1 , wherein the catalyst is obtained from a regeneration vessel.

3. The process according to claim 2 , wherein the catalyst is returned to the regeneration vessel from the conveyor.

4. The process according to claim 1 , wherein the catalyst is passed from the conveyor to storage and subsequently disposed.

5. The process according to claim 1 , wherein the conveyor further comprises a jacket.

6. The process according to claim 5 , wherein the jacket is adapted to receive cooling water.

7. The process according to claim 6 , wherein the shaft is coupled to a thread.

8. The process according to claim 6 , wherein the cooling water is heated by the catalyst within the conveyor and the heated water is provided to a utility.

9. The process according to claim 1 , wherein the conveyor further comprises a variable speed motor.

10. The process according to claim 2 , further comprising passing regenerated catalyst from the regeneration vessel to a riser of a fluid catalytic cracking riser-reactor.

11. The process according to claim 1 , wherein the catalyst is passed from the conveyor to a regeneration vessel.

12. The process according to claim 1 , wherein the conveyor cools the catalyst from at least about 700° C. to no more than about 600° C.

13. The process according to claim 1 , wherein the conveyor cools the catalyst from at least about 700° C. to no more than about 100° C.

14. The process according to claim 1 , wherein the conveyor transports about 130,000-about 450,000 kg/hr.

15. The process according to claim 1 , wherein the conveyor transports about 15-about 200 kg/hr.

16. A fluid catalytic cracking apparatus, comprising:
A) a riser-reactor comprising a riser terminating in a reaction vessel;
B) a regeneration vessel communicating with the riser-reactor for receiving spent catalyst from the riser-reactor and for sending regenerated catalyst to the riser-reactor, wherein the regeneration vessel comprises a line for transferring catalyst to the regeneration vessel; and
C) a conveyor positioned in the line for facilitating transfer of the catalyst, wherein the conveyor contains a shaft coupled to a thread.

17. The apparatus according to claim 16 , further comprising another line for disposing spent catalyst wherein a second conveyor is positioned within the disposal line for transferring catalyst, and the conveyor contains a shaft coupled to a thread.

18. The apparatus according to claim 17 , wherein each conveyor further comprises a water jacket and each shaft defines a void for receiving a cooling fluid.

19. A process for transferring catalyst in a fluid catalytic cracking apparatus, comprising:
A) passing the catalyst through a horizontal conveyor wherein the conveyor contains a screw for transporting the catalyst communicating with different portions of a shell of a regeneration vessel; and
B) passing the catalyst through another conveyor wherein the conveyor contains a screw for transporting catalyst for disposal.

20. The process according to claim 19 , wherein each conveyor further comprises a water jacket for receiving cooling water.

Assignees

• Uop Llc
• Uop Llc

Inventors

• Kulprathipanja Sathit
• Palmas Paolo

Classifications

• B65G53/08

  with mechanical injection of the materials, e.g. by screw · CPC title

• B01J8/002 Primary

  with a moving instrument · CPC title

• B01J2208/00778

  Kinetic energy reducing devices in the flow channel · CPC title

• B01J2208/00752

  Feeding · CPC title

• B01J2208/00761

  Discharging · CPC title