In-line trimming of dry catalyst feed
AssigneeExxonMobil Chemical Patents Inc.
InventorsDavid F Sanders, Matthew W. Holtcamp, Kevin A. Stevens, Joshua P Olson
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Abstract
A process for polymerizing polyethylene is disclosed. The process comprises contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system. The catalyst system is introduced to a line as a dry-feed. The line is coupled with a polymerization reactor. A carrier fluid is added to the line to form a slurry. The slurry is introduced to the polymerization reactor.
Claims20
A method for producing a polyolefin comprising:
- contacting a dry-feed composition and a solution composition in a line to form a slurry composition, the dry-feed composition comprising a contact product of a first catalyst, a second catalyst, a support, and a first activator, and the solution composition comprising a contact product of an activator, a diluent, and the first catalyst or the second catalyst;
- introducing a carrier gas to the line;
- introducing the slurry composition from the line into a gas-phase fluidized bed reactor;
- exposing the slurry composition to polymerization conditions;
- and
- obtaining a polyolefin.
Dependencies are inferred from the claim text.