Continuous preparation of calcined chemically-treated solid oxides

Patent metadata

Field	Value
Publication number	US-10040044-B2
Application number	US-201715677131-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Jun 23, 2009
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

The present invention discloses a continuous calcination vessel which can be used to prepare calcined chemically-treated solid oxides from solid oxides and chemically-treated solid oxides. A process for the continuous preparation of calcined chemically-treated solid oxides is also provided. Calcined chemically-treated solid oxides disclosed herein can be used in catalyst compositions for the polymerization of olefins.

First claim

We claim:

1. A continuous calcination vessel comprising:
(a) a fluidized bed vessel comprising at least one zone dividing wall for dividing the fluidized bed into a plurality of heating zones capable of independent temperature control and independent fluidizing gas control;
(b) a particulate material inlet capable of introducing inlet particulate material into the fluidized bed vessel;
(c) a fluidizing gas inlet capable of introducing a fluidizing gas into the fluidized bed vessel;
(d) a fluidizing gas path capable of directing the fluidizing gas from the fluidizing gas inlet into the fluidized bed vessel to fluidize the inlet particulate material; and
(e) an outlet capable of removing outlet particulate material from the fluidized bed vessel; wherein:
each heating zone comprises at least one baffle;
the fluidized bed vessel contains sufficient baffles to cause a substantially plug flow profile through the fluidized bed vessel; and
the fluidized bed vessel has a slope from horizontal of less than about 15 degrees.

2. The continuous calcination vessel of claim 1 , wherein the inlet particulate material comprises a solid oxide, a chemically-treated solid oxide, or a combination thereof.

3. The continuous calcination vessel of claim 1 , wherein the outlet particulate material comprises a calcined chemically-treated solid oxide.

4. The continuous calcination vessel of claim 1 , wherein each baffle contains apertures located on alternating opposite edges of the baffles to cause a serpentine flow profile through the fluidized bed vessel.

5. The continuous calcination vessel of claim 1 , wherein the fluidizing gas inlet comprises a gas distributor plate, nozzle, hole, screen, dispensing head, or any combination thereof.

6. The continuous calcination vessel of claim 1 , wherein the fluidized bed vessel comprises a first heating zone and a second heating zone, wherein:
the fluidizing gas in the first heating zone comprises air, nitrogen, argon, hydrogen, oxygen, carbon monoxide, water, or any combination thereof; and
the fluidizing gas in the second heating zone comprises helium, neon, argon, nitrogen, or any combination thereof.

7. The continuous calcination vessel of claim 1 , wherein the fluidized bed vessel has a slope from horizontal of less than about 10 degrees.

8. The continuous calcination vessel of claim 1 , wherein the fluidized bed vessel has a slope from horizontal of less than about 5 degrees.

9. The continuous calcination vessel of claim 1 , wherein the continuous calcination vessel is further configured to reduce a residual oxygen content of the outlet particulate material to less than about 100 ppm, a residual moisture content of the outlet particulate oxide to less than about 100 ppm, or a combination thereof.

10. A continuous calcination vessel comprising:
(a) a fluidized bed vessel comprising at least one zone dividing wall for dividing the fluidized bed into a plurality of heating zones capable of independent temperature control and independent fluidizing gas control;
(b) a particulate material inlet capable of introducing inlet particulate material into the fluidized bed vessel;
(c) a fluidizing gas inlet capable of introducing a fluidizing gas into the fluidized bed vessel;
(d) a fluidizing gas path capable of directing the fluidizing gas from the fluidizing gas inlet into the fluidized bed vessel to fluidize the inlet particulate material;
(e) an outlet capable of removing outlet particulate material from the fluidized bed vessel; and
(f) a filter apparatus adapted to remove a portion of the inlet particulate material, the outlet particulate material, or both, entrained in the fluidizing gas;
wherein the fluidized bed vessel has a slope from horizontal of less than about 15 degrees.

11. The continuous calcination vessel of claim 10 , wherein the filter apparatus is further configured to recycle a filtered portion of the inlet particulate material, the outlet particulate material, or both, back to the same or an upstream location in the continuous calcination vessel, wherein less than 1% by weight of the respective inlet particulate material, outlet particulate material, or both, is lost overhead.

12. The continuous calcination vessel of claim 10 , wherein the fluidized bed vessel comprises a first heating zone and a second heating zone, wherein:
the fluidizing gas in the first heating zone comprises air, nitrogen, argon, hydrogen, oxygen, carbon monoxide, water, or any combination thereof; and
the fluidizing gas in the second heating zone comprises helium, neon, argon, nitrogen, or any combination thereof.

13. The continuous calcination vessel of claim 10 , wherein the fluidizing gas inlet comprises a gas distributor plate, nozzle, hole, screen, dispensing head, or any combination thereof.

14. The continuous calcination vessel of claim 10 , wherein the fluidized bed vessel has a slope from horizontal of less than about 10 degrees.

15. The continuous calcination vessel of claim 10 , wherein the fluidized bed vessel has a slope from horizontal of less than about 5 degrees.

16. A continuous calcination vessel comprising:
(a) a fluidized bed vessel comprising at least one zone dividing wall for dividing the fluidized bed into a plurality of heating zones capable of independent temperature control and independent fluidizing gas control;
(b) a particulate material inlet capable of introducing inlet particulate material into the fluidized bed vessel;
(c) a fluidizing gas inlet capable of introducing a fluidizing gas into the fluidized bed vessel;
(d) a fluidizing gas path capable of directing the fluidizing gas from the fluidizing gas inlet into the fluidized bed vessel to fluidize the inlet particulate material;
(e) an outlet capable of removing outlet particulate material from the fluidized bed vessel; and
(f) a cooling system downstream of the outlet of the fluidized bed vessel;
wherein the fluidized bed vessel has a slope from horizontal of less than about 15 degrees.

17. The continuous calcination vessel of claim 16 , wherein the cooling system further comprises:
a fluidizing cooling gas inlet capable of introducing a fluidizing cooling gas into the cooling system;
a fluidizing cooling gas path capable of directing the fluidizing cooling gas from the fluidizing gas inlet into the cooling system to fluidize the outlet particulate material; and
a filter apparatus adapted to remove a portion of the outlet particulate material entrained in the fluidizing cooling gas.

18. The continuous calcination vessel of claim 16 , wherein the outlet particulate material comprises a calcined chemically-treated solid oxide.

19. The continuous calcination vessel of claim 16 , wherein the fluidized bed vessel has a slope from horizontal of less than about 10 degrees.

20. The continuous calcination vessel of claim 16 , wherein the fluidized bed vessel has a slope from horizontal of less than about 5 degrees.

Assignees

• Chevron Phillips Chemical Co Lp

Inventors

• Benham Elizabeth A
• Mcdaniel Max P

Classifications

• B01J8/1836

  Heating and cooling the reactor (B01J8/42 takes precedence) · CPC title

• B01J2208/00938

  Flow distribution elements · CPC title

• B01J31/2295

  Cyclic compounds, e.g. cyclopentadienyls · CPC title

• B01J2208/0053

  Controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling · CPC title

• B01J31/143

  of aluminium · CPC title