Linde Aktiengesellschaft

Saudi Basic Industries Corporation

Linde Gmbh

Richard Schneider

Heinz Bölt

Fuad Mosa

Peter M Fritz

Florian Winkler

Talal Ali

Mohammed Hassan Al-Hazmi

Helmut Fritz

Andreas Meiswinkel

Wolfgang Müller

Uwe Rosenthal

Normen Peulecke

Bernd H Müller

Sultan Eid Al-Otaibi

Sebastian Muschelknautz

Carsten Taube

Florian Mündl

Stephan Peitz

Shahid Azam

Anina Wöhl

Anton Wellenhofer

Vugar O Aliyev

Heinz Boelt

Karl-Heinz Hofmann

Hans-Jörg Zander

Volker Göke

Volker Goeke

Anina Woehl

Bhaskar Reddy Aluri

Sultan Al-Otaibe

Syriac Palackal

Bernd H Mueller

Hans-Jorg Zander

Mohammed Zahoor

Ayed Al-Ayed

Abdullah Al-Dugathier

Stefan Glanz

Shahid Majeed Azam

Aliyev Vugar

Wofgang Müller

Wolfgang MÜLLER

Sebastian Muschelknantz

Peter Fritz

Abdellah Al-Dugathier

Wolfgang Mueller

Fuad Mousa

A process () for the production of linear alpha-olefins is proposed, wherein ethylene in a feed mixture is subjected to catalytic oligomerization () to obtain a product mixture containing alpha-olefins with different chain length and side compounds. In a primary fractionation (), a primary fraction is formed using at least part of the product mixture, and in a secondary fractionation (), a secondary fraction is formed using at least part of the primary fraction. The primary fractionation () and the secondary fractionation () are carried out such that the primary fraction and the secondary fraction predominantly contain one of the alpha-olefins and are low in or free of other alpha-olefins, that the primary fraction contains one or more of the side compounds, and that the secondary fraction is depleted relative to the primary fraction in the one or more side compounds. In an intermediate step () between the primary fractionation () and the secondary fractionation (), to which at least part of the primary fraction is subjected, the one or more side compounds are at least partly converted to one or more secondary compounds, and the one or more secondary compounds are at least partly separated in the secondary fractionation (). The intermediate step () is carried out in such a way that not more than 0.8% of the alpha-olefin predominantly contained in the primary fraction or the part thereof subjected to the intermediate step is reacted. The intermediate step is carried out using an alumina-based catalyst.

Process and plant for producing alpha olefins

A process () for the production of linear alpha-olefins is proposed, wherein ethylene is subjected to catalytic oligomerization () in a feed mixture to obtain a product mixture containing alpha-olefins with different chain length and side compounds. In a primary fractionation (), a primary fraction is formed using at least part of the product mixture, and in a secondary fractionation (), a secondary fraction is formed using at least part of the primary fraction. The primary fractionation () and the secondary fractionation () are carried out such that the primary fraction and the secondary fraction predominantly contain one of the alpha-olefins and are low in or free of other alpha-olefins, that the primary fraction contains one or more of the side compounds, and that the secondary fraction is depleted relative to the primary fraction in the one or more side compounds. In an intermediate step () between the primary fractionation () and the secondary fractionation (), to which at least part of the primary fraction is subjected, the one or more side compounds are at least partly converted to one or more secondary compounds, and the one or more secondary compounds are at least partly separated in the secondary fractionation (). The intermediate step () is carried out in such a way that not more than 0.8% of the alpha-olefin predominantly contained in the primary fraction or the part thereof subjected to the intermediate step is reacted. The intermediate step is carried out in the presence of 30 wt.-ppm to 200 wt.-ppm of water as reaction moderator and using a strongly acidic ion exchange resin.

The present invention relates to a method for preparing linear alpha-olefins (LAO) by oligomerization of ethylene in the presence of solvent and homogenous catalyst, comprising the steps of: (i) feeding ethylene, solvent and catalyst into an oligomerization reactor, (ii) oligomerizing the ethylene in the reactor, (iii) removing a reactor outlet stream comprising solvent, linear alpha-olefins, ethylene, and catalyst from the reactor via a reactor outlet piping system, (iv) transferring the reactor outlet stream to a catalyst deactivation and removal step, and (v) deactivating and removing the catalyst from the reactor outlet stream, characterized in that at least one organic amine is added into the oligomerization reactor and/or into the reactor outlet piping system.

Method for preparing linear alpha-olefins

The present invention relates to a method for preparing linear alpha-olefins (LAO) by oligomerization of ethylene in the presence of a solvent and homogeneous catalyst, comprising the steps of:

The present invention relates to a method for oligomerization or polymerization of ethylene and/or alpha-olefins utilizing reactor equipment and other equipment wherein starting material comprising monomer(s), catalyst, cocatalyst and solvent is transferred to the reactor equipment via first piping, and product material comprising oligomer and/or polymer, non-reacted monomer(s), catalyst, cocatalyst and solvent is discharged from the reactor equipment via second piping, characterized in that the first piping, second piping, reactor equipment and/or other equipment are flushed with a product fraction obtained by said or a respective previous method prior to and/or after that oligomerization or polymerization method.

Method for oligomerization and/or polymerization of ethylene with flushing of equipment and piping

The present invention relates to a bubble column reactor comprising a column reactor having a sparger plate dividing the column reactor into a top reaction compartment and a bottom compartment, characterized in that an inlet and outlet line for introducing and disposing a flushing medium are connected to the bottom compartment; and an operation method thereof.

Method for operating bubble column reactor for the oligomerization of ethylene

The present invention relates to a method for processing high molecular weight oligomer waste products formed during the production of linear alpha-olefins by oligomerization of ethylene in a reactor in the presence of a solvent and a catalyst, characterized in that the high molecular weight oligomers are separated in a separation unit from a product stream of the reactor comprising the solvent, the catalyst, linear alpha-olefins and high molecular weight oligomers having a solidification temperature in the range of about 60-100&#xb0; C., then diluted with a dilution medium and heated to about 130&#xb0; C. to about 200&#xb0; C., the diluted high molecular weight oligomers are then transferred to a disposal device, wherein at least some of the dilution medium may be recovered and recycled for addition to the dilution medium.

Method for the preparation of linear alpha-olefins and reactor system therefore with improved disposal of high molecular weight oligomers

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Uffing, Germany

Richard Schneider