Abstract: 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.

Abstract: The present invention relates to a method for the deactivation of an organometallic catalyst in the product stream from an oligomerization reactor for the production of linear alpha-olefin, characterized in that the catalyst-containing product stream of the reactor is subjected to a temperature of at least 160° C. in a heating device. A reactor system for the method of the invention is also disclosed.

Abstract: The present invention relates to a method for preparing linear alpha-olefins by oligomerizing of ethylene in the presence of a first organic solvent and a homogenous catalyst in a reactor, characterized in that the reactor overhead is cooled by means of a refrigerant.

Abstract: The present invention relates to a process for oligomerization/polymerization of ethylene and/or alpha-olefins, comprising the steps of oligomerizing/polymerizing ethylene and/or alpha-olefins to produce a reaction product which contains undesired reaction by-products, separating the reaction by-product from the reaction product as one or more reaction by-product fractions, and subjecting at least one of the reaction by-product fractions to steam cracking to produce a steam cracking product which comprises ethylene, which may be optionally purified and feed to the oligomerization/polymerization of ethylene and/or alpha olefins step.

Abstract: 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° C., then diluted with a dilution medium and heated to about 130° C. to about 200° 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.

Abstract: 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.

Abstract: The present invention relates to a method for preparing linear alpha-olefins by oligomerizing of ethylene in the presence of an organic solvent and a homogenous catalyst, characterized in that the method is carried out in a reactor being fed with a gaseous feed comprising a minor amount of ethylene and a major amount of an inert gas.

Abstract: The present invention relates to a method for oligomerisation of ethylene to form linear alpha-olefins in an oligomerisation reactor in the presence of solvent and catalyst, wherein a reaction product containing unreacted ethylene and light linear alpha-olefins is discharged from the oligomerisation reactor and passed to at least one first direct cooling device for separating the reaction product into an ethylene rich gaseous fraction and a light linear alpha-olefins rich liquid fraction, wherein at least a portion of the light linear alpha-olefins rich liquid fraction is passed to a second cooling device for lowering the temperature thereof and is subsequently re-introduced into the first direct cooling device; and to a reactor system therefore.

Abstract: The invention relates to a homogeneous catalyst for the production of linear alpha-olefins by oligomerisation of ethylene, consisting of a zirconium salt of organic acids and a cocatalyst which consists of alkylaluminiums and/or aluminium chloride. The activity of the catalyst, system may sometimes be raised substantially by adjusting the molar ratio of chlorine to aluminium in the cocatalyst within the range between 1.0 and 1.5. The economic viability of the production process and product purity are improved.

Abstract: A method for producing at least one product stream containing hydrogen from a feedstock containing glycerol and a device for performing the method is disclosed. By separation of unwanted substances and pyrolysis of glycerol, an intermediate product is obtained from the feedstock containing glycerol and is then converted into a crude synthesis gas containing hydrogen and carbon monoxide by steam reforming in an externally heated steam reforming reactor.

Abstract: The invention provides a process for hydrogenating streams in plants for producing alkenes by catalytic dehydrogenation of light alkanes, and also an apparatus for carrying out the process. The entire hydrocarbon stream to the dehydrogenation reactor, consisting of fresh and recycled alkane, is subjected upstream of the dehydrogenation reactor to a full hydrogenation of all unsaturated hydrocarbons present therein. This drastically reduces coke formation in the dehydrogenation reactor. The energy demand for the preheating of the reactant stream to reaction temperature is reduced since the energy released in the exothermic hydrogenation remains virtually fully in the hydrocarbon stream.

Abstract: The invention relates to a process for the production of polypropylene with a propane-dehydrogenation stage and a polymerization stage, whereby a degassing stream is obtained, characterized in that the degassing stream is used as a feedstock stream for the propane-dehydrogenation stage.

Abstract: The invention relates to a process for the production of polyethylene with a stage for steam-cracking hydrocarbons to obtain ethylene and a polymerization stage to produce polyethylene, wherein a degassing stream is obtained from the polymerization stage, the degassing stream is used as a feedstock stream for the stage for steam-cracking.

Abstract: A hydrocarbon-containing feed, e.g. naphtha, is converted in a treatment plant (1), in particular a refinery or olefin plant, into desired olefins, e.g. ethylene and propylene. At least part of the fractions comprising relatively long-chain olefins, in particular olefins having at least four carbon atoms, obtained from the treatment plant (1) is passed to an olefin conversion stage (12) In the olefin conversion stage (12), for example, a catalytic reactor, in particular a fixed-bed reactor, at least part of the relatively long-chain olefins is converted into relatively shorter-chain olefins. Reaction products are fed together with any unreacted hydrocarbons to a conversion product fractionation stage (17) in which the desired olefins, in particular ethylene and propylene, are separated off. To increase the yield of the desired olefins, a paraffin/olefin separation stage (23) is installed downstream of the conversion product fractionation stage (17).

Abstract: A hydrocarbon-containing feed, e.g. naphtha, is converted in a treatment plant (1), in particular a refinery or olefin plant, into desired olefins, e.g. ethylene and propylene. At least part of the fractions comprising relatively long-chain olefins, in particular olefins having at least four carbon atoms, obtained from the treatment plant (1) is passed to an olefin conversion stage (12). In the olefin conversion stage (12), for example, a catalytic reactor, in particular a fixed-bed reactor, at least part of the relatively long-chain olefins is converted into relatively shorter-chain olefins. To increase the yield of desired olefins, the olefin conversion stage (12) is preceded by a paraffin/olefin separation stage (23) wherein the feed stream is separated into a paraffin stream, e.g., a stream comprising butane and pentane, and an olefin stream, e.g,. a stream comprising butene and pentene, e.g., by extractive distillation. The paraffins obtained are recirculated to the treatment plant (1), e.g.