Continuous preparation of calcined chemically-treated solid oxides
First Claim
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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.
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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.
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Citations
20 Claims
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1. A continuous calcination vessel comprising:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A continuous calcination vessel comprising:
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(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. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A continuous calcination vessel comprising:
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(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. - View Dependent Claims (17, 18, 19, 20)
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Specification