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US 2018/0001293 A1Published application
Heat Transfer in a Polymerization Reactor
AssigneeChevron Phillips Chemical Company LP
InventorsScott E. Kufeld, Joel A. Mutchler, John D. Hottovy
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Abstract
A process comprises polymerizing an olefin monomer in a loop reactor in the presence of a catalyst and a diluent, and producing a slurry comprising solid particulate olefin polymer and diluent. The Biot number is maintained at or below about 3.0 within the loop reactor during the polymerizing process. The slurry in the loop reactor forms a slurry film having a film coefficient along an inner surface of the reactor wall, and the film coefficient is less than about 500 BTU·hr−1·ft−2·° F.−1.
Claims20
A reactor comprising:
- a continuous tubular shell comprising a thickness and a thermal conductivity, wherein the continuous tubular shell defines a continuous loop;
- wherein a ratio of the thermal conductivity to the thickness is greater than or equal to about 120 BTU·hr−1·ft−2·° F.−1;
- and
- a slurry disposed within the continuous tubular shell, wherein the slurry comprises solid particulate olefin polymer and a diluent, and wherein the volume fraction of the solids in the slurry is greater than about 0.65.
1 more element
Dependencies are inferred from the claim text.