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US 9,540,467 B2Granted
Polymerization process
AssigneeIneos Europe AG
InventorsDaniel Marissal, Philip Van Breuseghem, Brent R. Walworth
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AssigneeIneos Europe AG
InventorsDaniel Marissal, Philip Van Breuseghem, Brent R. Walworth
Estimating the term…
Process for introducing a fresh feed of fresh comonomer and/or fresh inert hydrocarbon to a polymerization reactor which is part of a polymerization process having high and low pressure recovery systems, the high pressure recovery system being at a pressure of 0.5 MPa (5 bar) or above and the low pressure recovery system being at a pressure of less than 0.5 MPa (5 bar). The process includes passing the fresh feed and a process stream containing a first component of hydrogen, nitrogen and/or methane and a second component of a monomer to a separator which is part of the low pressure recovery system and is at a pressure of 0.4 MPa or less to produce a first stream containing a majority of the first component and a second stream containing the second component and a majority of the fresh feed, and passing the second stream to the polymerization reactor.
A process for the introduction of a fresh feed selected from fresh comonomer and fresh inert hydrocarbon to a polymerisation reactor wherein the polymerisation reactor is part of a polymerisation process comprising high and low pressure recovery systems, said high pressure recovery system being at a pressure of 0.5 MPa (5 bar) or above and said low pressure recovery system being at a pressure of less than 0.5 MPa (5 bar), which process comprises passing said fresh feed and a process stream comprising a first component selected from hydrogen, nitrogen and methane and a second component which is a monomer to a separator which is part of the low pressure recovery system and is at a pressure of 0.4 MPa or less to produce a first stream comprising the majority of the first component and a second stream comprising the second component and the majority of the fresh feed, and passing the second stream to the polymerisation reactor.
A process for the treatment of a fresh feed stream to be introduced into a polymerisation reactor, said process comprising
Dependencies are inferred from the claim text.
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Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
Polymerisation in non-solvents: organic medium
Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
About 6 years 10 months of term left · ends 14 Aug 2033 (estimated)
This application is the U.S. national phase of International Application No. PCT/EP2013/067026 filed Aug. 14, 2013 which designated the U.S., the entire contents of each of which are hereby incorporated by reference.
The present invention relates to a process for the introduction of liquid feeds to a polymerisation process.
The production of polymer powder by polymerisation reactions of monomers in the presence of catalysts is well-known. For example, processes are known and widely operated commercially using both fluidised bed reactors and slurry phase reactors.
The present invention is particularly applicable to the polymerisation of olefins in gas phase or slurry phase reactors.
The polymerisation reactor preferably has a volume of at least 50 m3, for example in the range 50 to 250 m3.
The polymerisation reactors may have at least 2 withdrawal ports.