Basf Aktiengesellschaft

Basf Se Corporation

Linde Gmbh

Alexander Weck

Stephan Schlitter

Michael Hesse

Rolf-Hartmuth Fischer

Holger Borchert

Gunther Windecker

Markus Rösch

Rolf Pinkos

Ralf-Thomas Rahn

Nils Bottke

Gunnar Heydrich

Gerhard Olbert

Markus Schubert

Randolf Hugo

Thomas Preiss

Frank Stein

Olga Schubert

Kirsten Wenz

Sabine Jourdan

Markus Roesch

Ekkehard Schwab

Gerhard Nestler

Holger Herbst

Gabriele Iffland

Kerem Bay

Gerd Kaibel

Toni Dockner

Peter Zehner

Otto Machhammer

Steffen Maas

Michael Schulz

Markus Weber

Heinrich Aichinger

Martin Haubner

Grigorios Kolios

Lothar Franz

Wolfgang Franzischka

Regina Benfer

Albrecht Dams

Herbert Exner

Willi Schmidt

Florina Corina Patcas

Albena Kostova

Kirsten Spannhoff

Ellen Dahlhoff

Matthias Geisendorfer

Alireza Rezai

Sabine Borchers

Horst Grafmans

Klaus Harth

Claus Hechler

Thomas Krug

Ulrike Wegerle

Sven Crone

Norbert Asprion

Mark Duda

Peter Pfab

Rainer Papp

Karl-Heinz Ross

Heinz Auer

Michael Steiniger

Heinz Isak

Frank-Friedrich Pape

Jochen Steiner

Jörg Heilek

Roland Krokoszinski

Axel Paul

Michael Jolyon Sprague

Jens Weiguny

Henrik Junicke

Norbert Sendhoff

Uwe Stabel

Dirk Franke

Heinrich-Josef Blankertz

Heinrich Laib

Markus R&ouml;sch

Jan Pablo Josch

Kirsten Burkart

J&ouml;rg Therre

Heinz Ruetter

Werner Weinle

Hendrik Reyneke

Till Blum

Manfred Munzinger

Christof Palm

Karl-Heinz Roβ

Oliver Seel

Carlos Tellaeche Herranz

Sylvia Huber-Dirr

Ragavendra Prasad Balegedde Ramachandran

Sonja Giesa

Ulrich-Dieter Pessel

Michael Dr&ouml;gem&uuml;ller

Jasmina Kessel

Heinz Rütter

Martin Kamann

Axel Sperber

Wulfrich Friedemann Beer

Klaus Beiser

J&uuml;rgen Ciprian

A method for producing ethylene and/or other olefins by steam cracking includes charging one or more crackers with a paraffin-containing feed and withdrawing a crude gas from the one or more crackers. The crude gas is subjected at least in part to a treatment comprising a crude gas compression and a thermal separation using a C2 refrigerant and a C3 refrigerant. A crude gas compressor is used for the crude gas compression, wherein the ethylene refrigerant is compressed using a C2 refrigerant compressor. The propylene refrigerant is compressed using a C3 refrigerant compressor. The crude gas compressor comprises two serial compressor trains. The compressor trains, the C2 refrigerant compressor and the C3 refrigerant compressor are each operated at least in part using electrical drives, which have at least partially identical power features, are provided as variable-speed drives of the same construction, and are each fed via frequency converters.

Method and plant for producing ethylene and/or other olefins by steam cracking

The present invention relates to a process for converting oxygenates to olefins, comprising

Process for the conversion of oxygenates to olefins

A process for the oxidative dehydrogenation of n-butenes to butadiene is disclosed herein, in which the formation of butadiene peroxides from butadiene in the work-up of the product gas mixture from the oxidative dehydrogenation is effectively prevented.

Process for the oxidative dehydrogenation of N-butenes to butadiene

The present invention relates to a catalyst for the conversion of oxygenates to olefins, comprising

Catalyst coating and process for the conversion of oxygenates to olefins

A reactor for gas-phase dehydrogenation of a hydrocarbon-comprising stream with an oxygen-comprising stream over a monolithic heterogeneous catalyst. Catalytically active zone(s) comprising monoliths packed next to one another and/or above one another and a mixing zone having fixed internals upstream of each catalytically active zone. Feed line(s) for the hydrocarbon-comprising gas stream to be dehydrogenated at the lower end of the reactor. Independently regulable feed line(s), which supply distributor(s), for the oxygen-comprising gas stream into each of the mixing zones and discharge line(s) for the reaction gas mixture of the autothermal gas-phase dehydrogenation at the upper end of the reactor. The interior wall of the reactor is provided with insulation. The catalytically active zone(s) is accessible from the outside of the reactor via manhole(s). The catalytically active zone(s), mixing zone, independently regulable feed line(s), and distributor(s), may be designed as one component which can individually be mounted and removed.

Reactor for carrying out an autothermal gas-phase dehydrogenation

A reactor includes an essentially horizontal cylinder for carrying out an autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream using an oxygen-comprising gas stream to give a reaction gas mixture over a heterogeneous catalyst configured as monolith. The interior of the reactor is divided by a detachable, cylindrical or prismatic housing, which is arranged in the longitudinal direction of the reactor and is gastight in the circumferential direction, into an inner region having one or more catalytically active zones, each having a packing composed of monoliths stacked on top of one another, next to one another and behind one another and before each catalytically active zone in each case a mixing zone having solid internals are provided and into an outer region, which is supplied with an inert gas, arranged coaxially to the inner region. A heat exchanger is connected to the housing at one end of the reactor.

A process for preparing oligomers by continuous oligomerization of butenes is described, wherein a) a feed stream 1) comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers. b) The oligomers obtained in a) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation. c) Isobutane is separated off by distillation from the residual stream, and d) the isobutane-depleted stream obtained after the work-up by distillation c) is reacted to form oligomers.

Process for preparing oligomers of butene

Processes for decreasing fumaric acid deposits in preparing maleic anhydride by heterogeneously catalyzed oxidation of a hydrocarbon with molecular oxygen. Maleic anhydride is absorbed from the crude mixture in an absorbent in an absorption column and desorbed in a desorption column, the entirety or portion of absorbent depleted in maleic anhydride, for controlled precipitation of fumaric acid, being cooled and/or concentrated by evaporating a portion of absorbent such that the difference between the concentration of fumaric acid in the recycle stream at the outlet of the desorption column under existing conditions and the equilibrium concentration of fumaric acid according to the solubility curve after cooling and/or evaporation of a portion of absorbent is &#x2267;250 ppm by weight, and the fumaric acid precipitated as a solid is removed completely or partly from the absorbent recycling system and the fumaric acid-depleted absorbent is recycled completely or partly to the absorption column.

Process for separating off fumaric acid and other minor components during the production of maleic anhydride

Process for preparing olefins, which comprises the following steps:

Process for the selective preparation of light olefins

The invention relates to a process for workup of a stream () comprising butene and/or butadiene, butane, hydrogen and/or nitrogen and carbon dioxide, comprising:

Process for workup of a stream comprising butene and/or butadiene

A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.

Method for the production of N,N-dimethylacetamide (DMAC)

A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of &#x2267;99.7% by weight.

The invention relates to a method of controlling a hydrogenation of a starting material in a hydrogenation reactor, in which the amount of hydrogen reacted in the hydrogenation is firstly determined, the ratio of the amount of hydrogen reacted to the amount of starting material fed in is then derived, this ratio is compared with a prescribed value and, finally, at least one process parameter is altered if the ratio of the amount of hydrogen reacted to the amount of starting material fed in deviates by a prescribed amount from the prescribed value.

Method for controlling hydrogenation

The invention relates to a catalyst provided in the form of an extrudate, which contains 5 to 85% by weight of copper oxide and comprises, in the active material and as binders, the same oxidic carrier material. The invention also relates to the use of the catalyst for hydrogenating carbonyl compounds.

Catalyst extrudates based on copper oxide and their use for hydrogenating carbonyl compounds

The present invention provides a process for distillatively purifying tetrahydrofuran in the presence of a polar solvent.

Method for the distillative processing of tetrahydrofuran

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Freinsheim, Germany

Alexander Weck