Process for improving the operations of a polymerisation plant
First Claim
1. Petrochemical complex comprising an olefin monomer polymerisation plant comprising at least one polymerisation reactor and an optional degassing section, whereinthe polymerisation reactor comprises process hydrocarbons consisting of the monomer, the optional comonomer(s) and optionally at least one inert hydrocarbon diluent, together with aluminium containing compound(s);
- andthe polymerisation plant comprises liquid purge stream(s) which comprises aluminium containing compounds and optionally polymer fines, together with accumulated hydrocarbons which are different from the said process hydrocarbons and which are hydrocarbons containing at least 4 carbon atoms,wherein the petrochemical complex also comprises a multipurpose hydrocarbon treatment unit which separates the liquid purge stream(s) intoone stream comprising substantially all of the aluminium containing compounds and optional polymer fines, andone stream comprising the accumulated hydrocarbons; and
further wherein the petrochemical complex also comprises an upgrading unit for the treatment of the accumulated hydrocarbons which also produces the fresh monomer and/or comonomer for the polymerisation reaction.
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Abstract
Petrochemical complex containing an olefin monomer polymerization plant having at least one polymerization reactor and an optional degassing section. The polymerization reactor contains process hydrocarbons consisting of the monomer, the optional comonomer(s) and optionally at least one inert hydrocarbon diluent, together with aluminum containing compound(s). The polymerization plant includes liquid purge stream(s) which contain aluminum containing compounds and optionally polymer fines, together with accumulated hydrocarbons which are different from the process hydrocarbons and which are hydrocarbons containing at least 4 carbon atoms. The petrochemical complex also contains a multipurpose hydrocarbon treatment unit which separates the liquid purge stream(s) into one stream having substantially all of the aluminum containing compounds and optional polymer fines, and one stream containing the accumulated hydrocarbons. The petrochemical complex also contains an upgrading unit for the treatment of the accumulated hydrocarbons which also produces the fresh monomer and/or comonomer for the polymerization reaction.
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Citations
23 Claims
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1. Petrochemical complex comprising an olefin monomer polymerisation plant comprising at least one polymerisation reactor and an optional degassing section, wherein
the polymerisation reactor comprises process hydrocarbons consisting of the monomer, the optional comonomer(s) and optionally at least one inert hydrocarbon diluent, together with aluminium containing compound(s); - and
the polymerisation plant comprises liquid purge stream(s) which comprises aluminium containing compounds and optionally polymer fines, together with accumulated hydrocarbons which are different from the said process hydrocarbons and which are hydrocarbons containing at least 4 carbon atoms, wherein the petrochemical complex also comprises a multipurpose hydrocarbon treatment unit which separates the liquid purge stream(s) into one stream comprising substantially all of the aluminium containing compounds and optional polymer fines, and one stream comprising the accumulated hydrocarbons; and further wherein the petrochemical complex also comprises an upgrading unit for the treatment of the accumulated hydrocarbons which also produces the fresh monomer and/or comonomer for the polymerisation reaction. - View Dependent Claims (4, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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2. Process for the polymerisation of an olefin monomer, said process comprising the polymerisation in the polymerisation reactor of an olefin monomer polymerisation plant of the monomer and the optional comonomer(s) optionally in the presence of at least one inert hydrocarbon diluent (the “
- process hydrocarbons”
) and at least one aluminium containing compound, said process comprising at least one liquid purge stream which comprises aluminium containing compounds and optionally polymer fines, together with accumulated hydrocarbons which are different from the said process hydrocarbons and which are hydrocarbons containing at least 4 carbon atoms,wherein the liquid purge stream is separated into one stream comprising substantially all of the aluminium containing compounds and optional polymer fines, and one stream comprising the accumulated hydrocarbons. - View Dependent Claims (3, 5, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- process hydrocarbons”
Specification