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US 12,606,648 B2Granted
Centralized hydrocarbon treatment in a polymer production process
AssigneeChevron Phillips Chemical Company LP
InventorsReza Khankal, Hetian Li, Timothy O. Odi, Anurag Gupta, Willie J. Isom
Life of this patent
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Abstract
Treaters that are configured to remove one or more contaminants from hydrocarbon streams recovered from a polymerization process are located upstream of the monomer and diluent recovery unit.
Claims20
A process comprising:
- separating a polymer product stream into an untreated vapor stream, an untreated liquid stream, and a polymer stream comprising solid polymer;
- treating the untreated vapor stream with a first desiccant to produce a treated vapor stream;
- treating the untreated liquid stream with a second desiccant to produce a treated liquid stream;
- and
- introducing the treated vapor stream and the treated liquid stream to a monomer diluent recovery unit.
2 more elements
A polymerization system comprising:
- a polymerization reactor configured to polymerize one or more olefin monomers to produce a solid polymer;
- a polymer product stream connected to an outlet of the polymerization reactor and configured to receive a reactor effluent containing the solid polymer;
- a product recovery system coupled to the polymer product stream and configured to receive the reactor effluent and to separate the reactor effluent into an untreated vapor stream, an untreated liquid stream, and a polymer stream;
- a first treater coupled to the untreated vapor stream and containing a first desiccant configured to remove one or more of a plurality of contaminants from the untreated vapor stream to produce a treated vapor stream;
- a second treater coupled to the untreated liquid stream and containing a second desiccant configured to remove one or more the plurality of contaminants from the untreated liquid stream to produce a treated liquid stream;
- and
- a monomer diluent recovery unit coupled to the first treater and to the second treater and configured to receive the treated vapor stream from the first treater and the treated liquid stream from the second treater.
4 more elements
Dependencies are inferred from the claim text.