Three-dimensional annular rotating fluidized bed fluid-solids contactor

Patent metadata

Field	Value
Publication number	US-12145144-B2
Application number	US-202017310585-A
Country	US
Kind code	B2
Filing date	Feb 13, 2020
Priority date	Feb 13, 2019
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A fluid-solids contactor comprising an annular rotating fluidized bed and a method of using the same are disclosed. The fluid-solids contactor includes a vessel and a plurality feed inlets disposed thereon. The vessel comprises a stationary inner wall, an outer wall, and a chamber formed between the stationary inner wall and the outer wall. The feed inlets are configured to create an annular rotating bed with mixture of solids and a fluid when the solid particles and a fluid are fed into the chamber. The stationary inner wall of the vessel is permeable to the fluid such that the fluid from the chamber can be continuously withdrawn from the solids to the space within the stationary inner wall of the vessel.

First claim

The invention claimed is:

1. A fluid-solids contactor adapted to form an annular rotating fluidized bed, the fluid-solids contactor comprising:
a vessel comprising an outer wall and a stationary inner wall forming a chamber;
a solids inlet positioned at a first end of the vessel, wherein the solids inlet is adapted to receive solid particles into the chamber; and
one or more feed inlets adapted to inject a fluid into the chamber in a direction such that, as the fluid flows in the chamber, the solid particles create an annular rotating bed;
wherein the stationary inner wall of the vessel is permeable to the fluid such that the vessel is configured to withdraw the fluid into space within the stationary inner wall; and
wherein the outer wall is rotatable.

2. The fluid-solids contactor of claim 1 , wherein the stationary inner wall of the vessel is permeable to the fluid such that the vessel is configured to withdraw the fluid radially into space within the stationary inner wall.

3. The fluid-solids contactor of claim 1 , wherein the one or more feed inlets are adapted to inject the fluid in a direction that is at an acute angle to a longitudinal axis of the vessel.

4. The fluid-solids contactor of claim 1 , wherein the solid particles comprise (i) active catalyst particles, (ii) polymer particles, (iii) spent catalyst particles, (iv) inert heat carrying particles, (v) adsorbent particles, (vi) chemisorption particles, (vii) particles of material that needs to be oxidized, particles of material that needs to be reduced, (viii) particles that need to be combusted or gasified, (ix) particles that need to be coated, or fix) (x) combinations thereof.

5. The fluid-solids contactor of claim 1 , wherein the solids inlet is adapted to inject the solid particles in a direction that is at an acute angle to a longitudinal axis of the vessel.

6. The fluid-solids contactor of claim 1 , further comprising:
an outlet at a second end of the vessel adapted to remove the solid particles from the vessel.

7. The fluid-solids contactor of claim 1 , wherein the fluid-solids contactor is adapted to be operated such that the longitudinal axis is one of: horizontal, vertical, or inclined at an angle.

8. The fluid-solids contactor of claim 1 , wherein the solids inlet is oriented in an axial direction or a radial direction of the vessel.

9. The fluid-solids contactor of claim 1 , wherein the solid inlet at the first end of the vessel is adapted to receive solid particles having a particle size distribution of 1 to 3000 microns.

10. The fluid-solids contactor of claim 1 , wherein the one or more feed inlets are located along the longitudinal axis of the vessel at different axial locations, each individually in fluid communication with a fluid source.

11. The fluid-solids contactor of claim 1 , wherein the vessel is made of material comprising refractory-lined steel, steel, glass-lined steel, aluminum, or a combination thereof.

12. The fluid-solids contactor of claim 1 , wherein the vessel is cylindrical and the one or more feed inlets are disposed in an azimuthal direction of the vessel.

13. The fluid-solids contactor of claim 1 , wherein the fluid comprises one or more of a monomer, a co-monomer, co-catalyst, and a chain transfer agent and wherein the solid particles comprise a catalyst for polymerization of the monomer.

14. The fluid-solids contactor of claim 13 , wherein the monomer comprises ethylene, propylene, one or more linear or branched C 4 -C 20 alpha-olefins, or a combination thereof.

15. The fluid-solids contactor of claim 13 , wherein the chain transfer agent comprises hydrogen, aluminum alkyl compounds, or a combination thereof.

16. The fluid-solids contactor of claim 13 , wherein the co-catalyst comprises triethylaluminum.

17. The fluid-solids contactor of claim 1 , wherein the fluid-solids contactor comprises a fluid catalytic cracker.

18. The fluid-solids contactor of claim 1 , wherein the fluid-solids contactor comprises a polymer degasser.

19. The fluid-solids contactor of claim 1 , wherein the fluid-solids contactor comprises a polymerization reactor.

20. The fluid-solids contactor of claim 1 , wherein the fluid-solids contactor comprises a catalyst regeneration unit.

Assignees

• Sabic Global Technologies Bv

Inventors

• Pannala Sreekanth
• Dittrich Christoph
• West David
• Li Tingwen

Classifications

• B01J8/386

  internally, i.e. the particles rotate within the vessel · CPC title

• C10G11/18

  according to the "fluidised-bed" technique · CPC title

• B01J8/222

  in the presence of a rotating device only · CPC title

• B01J8/006

  by filtration · CPC title

• B01J8/0015

  Feeding of the particles in the reactor; Evacuation of the particles out of the reactor · CPC title