Abstract: This gas distributor comprises at least one elongate crosspiece including two side walls, inclined on their upper parts, connected to one another in their respective upper parts and defining a gas circulation housing between them emerging downward. The gas distributor includes at least one reinforcing member arranged in the housing defined in the elongate crosspiece, the reinforcing member including a central vertical plate that extends longitudinally in said housing and at least one bracket fastened transversely between the central vertical plate and the side wall of the elongate crosspiece.

Abstract: This gas distributor comprises at least one elongate crosspiece including two side walls, inclined on their upper parts, connected to one another in their respective upper parts and defining a gas circulation housing between them emerging downward. The gas distributor includes at least one reinforcing member arranged in the housing defined in the elongate crosspiece, the reinforcing member (34) including a central vertical plate that extends longitudinally in said housing and at least one bracket fastened transversely between the central vertical plate and the side wall of the elongate crosspiece.

Abstract: Polymerization process for the polymerization of monomer in a polymerization system having at least one component attached thereto which component is flushed with a flush medium which enters the polymerization system. Initially, the component is flushed with a first flush medium, and subsequently the component is flushed with a second flush medium.

Abstract: The present invention relates to vapour-solids separations, and in particular provides a process for the separation of a stream comprising vapour and a stream comprising solids from a stream comprising vapour and solids using a separation vessel, said separation vessel having: a. a first inlet for the stream to be separated, b. a liquid outlet, c. a vapour outlet, d. a demister located on the vapour outlet, and e.

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.

Abstract: The present invention relates to a polymerisation process, and in particular provides a process for the polymeristion of monomer in a polymerisation system having at least one component attached thereto which component is flushed with a flush medium which enters the polymerisation system, wherein initially said component is flushed with a first flush medium, and subsequently said component is flushed with a second flush medium.

Abstract: Process for the polymerization of monomer in a polymerization system having at least one component attached thereto which is flushed with a flush medium which enters the polymerization system. Initially, the component is flushed with a first flush medium, and subsequently the component is flushed with a second flush medium which differs in composition from the first flush medium. A flush gas containing monomer is used as the flush medium when the polymer production rate is above 10 Te/h.

Abstract: The present invention relates to a process for improving the operations of a polymerisation plant which uses aluminium containing compound(s).

Abstract: The present invention relates to a polymerisation process, and in particular provides a process for the polymerisation of monomer in a polymerisation system having at least one component attached thereto which component is flushed with a flush medium which enters the polymerisation system, wherein initially said component is flushed with a first flush medium, and subsequently said component is flushed with a second flush medium.