Continuous Preparation of Calcined Chemically-Treated Solid Oxides
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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
40 Claims
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1-20. -20. (canceled)
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21. 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 (22, 23, 24, 25, 26, 27, 28, 29)
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30. 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 (31, 32, 33, 34, 35)
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36. 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 (37, 38, 39, 40)
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Specification