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US 11,833,479 B2Granted
Catalyst slurry mixing process and system
AssigneeChevron Phillips Chemical Company LP
InventorsJames E. Hein, Scott E. Kufeld
Life of this patent
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Abstract
Disclosed are a process and system for preparing a catalyst slurry. The process can include preparing a catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system. The catalyst slurry preparation system can include a mixing vessel, a rotatable impeller system connected to the mixing vessel, and a motor connected to the rotatable impeller system. The rotatable impeller system can include an agitator shaft and a hub connected to the agitator shaft. The hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel, and the hub has at least three blades.
Claims20
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft, wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel, and wherein the first hub comprises three blades, and
- wherein the mixing vessel is a first mixing vessel, the process further comprising:
- preparing a second catalyst slurry comprising the solid particulate catalyst and the carrier liquid in the catalyst slurry preparation system,
- wherein the catalyst slurry preparation system further comprises:
- a second mixing vessel,
- a second rotatable impeller system connected to the second mixing vessel, and
- a second motor connected to the second rotatable impeller system,
- wherein the second rotatable impeller system comprises a second agitator shaft and a second hub connected to the second agitator shaft,
- wherein the second hub and at least a portion of the second agitator shaft are positioned within the second mixing vessel along a longitudinal axis of the second mixing vessel,
- wherein the second hub comprises three blades,
- wherein an outlet of the second mixing vessel is connected to an inlet of the first mixing vessel,
- wherein the first mixing vessel is configured to hold a first volume of the first catalyst slurry suitable to feed the first catalyst slurry to a polymerization reactor for 12 to 72 hours, and
- wherein the second mixing vessel is configured to hold a second volume of the second catalyst slurry that is four to eight times the first volume of the first catalyst slurry.
15 more elements
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft,
- wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel,
- wherein the first hub comprises three blades,
- wherein the rotatable impeller system further comprises a second hub connected to the agitator shaft, wherein the second hub comprises at least two blades and
- wherein the first hub is connected to the agitator shaft in an upper half of the mixing vessel and the second hub is connected to the agitator shaft in a lower half of the mixing vessel.
7 more elements
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft,
- wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel,
- wherein the first hub comprises three blades,
- wherein the rotatable impeller system further comprises a second hub connected to the agitator shaft, wherein the second hub comprises at least two blades and
- wherein the first hub is above the second hub, and wherein a diameter of the first hub is greater than a diameter of the second hub.
7 more elements
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft,
- wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel,
- wherein the first hub comprises three blades,
- wherein the rotatable impeller system further comprises a second hub connected to the agitator shaft, wherein the second hub comprises at least two blades,
- wherein the rotatable impeller system further comprises a third hub that is connected to the agitator shaft, wherein the third hub comprises at least two blades, and
- wherein the first hub is connected to the agitator shaft in an upper half of the mixing vessel, the second hub is connected to the agitator shaft in a lower half of the mixing vessel, and the third hub is connected to the agitator shaft in the lower half of the mixing vessel.
8 more elements
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft,
- wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel,
- wherein the first hub comprises three blades,
- wherein the rotatable impeller system further comprises a second hub connected to the agitator shaft, wherein the second hub comprises at least two blades,
- wherein the rotatable impeller system further comprises a third hub that is connected to the agitator shaft, wherein the third hub comprises at least two blades, and
- wherein the first hub is connected to the agitator shaft in an upper portion of the mixing vessel, the second hub is connected to the agitator shaft in a middle portion of the mixing vessel, and the third hub is connected to the agitator shaft in a lower portion of the mixing vessel.
8 more elements
A process comprising:
- preparing a first catalyst slurry comprising a solid particulate catalyst and a carrier liquid in a catalyst slurry preparation system,
- wherein the catalyst slurry preparation system comprises:
- a mixing vessel,
- a rotatable impeller system connected to the mixing vessel, and
- a motor connected to the rotatable impeller system,
- wherein the rotatable impeller system comprises an agitator shaft and a first hub connected to the agitator shaft,
- wherein the first hub and at least a portion of the agitator shaft are positioned within the mixing vessel along a longitudinal axis of the mixing vessel,
- wherein the first hub comprises three blades,
- wherein the rotatable impeller system further comprises a second hub connected to the agitator shaft, wherein the second hub comprises at least two blades,
- wherein the rotatable impeller system further comprises a third hub that is connected to the agitator shaft, wherein the third hub comprises at least two blades, and
- wherein the first hub is above the second hub and the third hub, and wherein a diameter of the first hub is greater than i) a diameter of the second hub, ii) a diameter of the third hub, or iii) a diameter of the second hub and a diameter of the third hub.
8 more elements
Dependencies are inferred from the claim text.