Polyolefin production with multiple polymerization reactors
AssigneeChevron Phillips Chemical Company LP
InventorsMaruti Bhandarkar, Elizabeth Ann Benham, Rebecca A. Gonzales, Scott E. Kufeld, Joel A. Mutchler, Catherine M. Gill, Thanh T. Nguyen, Timothy O. Odi
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Abstract
A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge slurry or both the first discharge slurry and the second discharge slurry.
Claims35
A polyolefin production system comprising:
- a first reactor configured to produce a first reactor discharge comprising a first polyolefin;
- a second reactor configured to produce a second reactor discharge comprising a second polyolefin;
- and
- a post-reactor treatment zone configured to receive the first reactor discharge and the second reactor discharge, wherein the first and second reactors are configured to allow the first reactor discharge to be (a) transferred to the second reactor and, alternatively, (b) diverted to by-pass the second reactor and fed into the post-reactor treatment zone wherein to the first and second polyolefins are first contacted in the post-reactor treatment zone,
- wherein the first polyolefin is 30 weight % to 70 weight % of the second polyolefin.
A polyolefin production system comprising:
- a first-reactor configured to produce a first reactor discharge comprising polyolefin and non-polyolefin components;
- a second reactor configured to produce a second reactor discharge which is fed into the first reactor;
- and
- a post-reactor treatment zone configured to receive the first reactor discharge and produce a first extruded polyolefin and a second extruded polyolefin,
- wherein the polyolefin in the first reactor discharge is 30 weight % to 70 weight % of polyolefin in the second reactor discharge.
A polyolefin production system comprising:
- a first reactor configured to produce a first discharge slurry comprising a first polyolefin;
- a second reactor configured to produce a second discharge slurry comprising a second polyolefin;
- and
- a post-reactor treatment zone comprising a separation vessel configured to receive as separate feeds the first discharge slurry and the second discharge slurry,
- wherein the first polyolefin is 30 weight % to 70 weight % of the second polyolefin.
Dependencies are inferred from the claim text.