Basf Aktiengesellschaft

Basf Se Corporation

Basf Actiengesellschaft

Falk + Thomas Engineering Gmbh

Peter Zehner

Otto Machhammer

Oliver Bey

Rocco Paciello

Klaus Harth

Goetz-Peter Schindler

Ulrich Steinbrenner

Claus Hechler

Gunnar Heydrich

Joaquim Henrique Teles

Ulrich Hammon

Hermann Luyken

Klaus Joachim Mueller-Engel

Peter Bassler

Wolfgang Harder

Gerhard Olbert

Alexander Weck

Herwig Hoffmann

Wilhelm Ruppel

Hartmut Riechers

Andreas Raichle

Ulrich Mueller

Rolf Pinkos

Wolfgang Siegel

Michael Hesse

Ekkehard Schwab

Alfred Oftring

Hans-Josef Sterzel

Gerd Kaibel

Eckhard Stroefer

Toni Dockner

Norbert Rieber

Thomas Heidemann

Frank Rosowski

Leopold Hupfer

Torsten Mattke

Andreas Tenten

Georg Heinrich Grosch

Stephan Bauer

Frank Funke

Peter Schwab

Klaus Joachim Müller-Engel

Ludwig Schuster

Michael Röper

Stephan Schlitter

Kerstin Schierle-Arndt

Andreas Keller

Frieder Borgmeier

Thomas Ostrowski

Holger Friedrich

Götz-Peter Schindler

Martin Haubner

Mathias Schelwies

Regina Benfer

Georg Seeber

Gerd Tebben

Christoph Adami

Ralf Schulz

Martin Schäfer

Friedrich-Georg Martin

Stefan Birnbach

Ralf Böhling

Uwe Stabel

Heribert Kuerten

Ulrich Penzel

Heiko Arnold

Erwin Thomas

Marc Heider

Wolfgang Mackenroth

Irene Troetsch-Schaller

Siegfried Winderl

Dieter Voges

Kathrin Harre

Wolfgang Richter

Kai Gumlich

Michael Slany

Max Strohmeyer

Ralf Boehling

Gad Kory

Josef Guth

Wolfgang Reiss

Otto-Alfred Grosskinsky

Martin Schmidt-Radde

Guenter Herrmann

Jörg Pastre

Marcus Sigl

Christian Wulff

Thomas Narbeshuber

Andreas Walch

Henrik Junicke

Hans Volkmar Schwarz

Frank Poplow

Anne Wenzel

Anton Negele

Bernhard Geissler

Peter Resch

Jürgen Demeter

Steffen Oehlenschläger

Dominic Vanoppen

Filip Deberdt

A reactor for performing a gas/liquid biphasic high-pressure reaction with a foaming medium, comprising an interior formed by a cylindrical, vertically oriented elongate shell, a bottom and a cap, wherein the interior is divided by internals into a backmixed zone and a zone of limited backmixing, wherein the backmixed zone and the zone of limited backmixing are consecutively traversable by the reaction mixture, wherein the backmixed zone comprises means for introducing gas and liquid and a gas outlet and also comprises at least one mixing apparatus selected from a stirrer, a jet nozzle and means for injecting the gas, and the zone of limited backmixing comprises a reaction product outlet, a first cylindrical internal element which in the interior extends in the longitudinal direction of the reactor and which delimits the zone of limited backmixing from the backmixed zone, backmixing-preventing second internal elements in the form of random packings, structured packings or liquid-permeable trays arranged in the zone of limited backmixing and a riser tube whose lower end is arranged within the backmixed zone and whose upper end opens into the zone of limited backmixing so that liquid from the backmixed zone can ascend into the zone of limited backmixing via the riser tube, wherein flow into the zone of limited backmixing enters from below. The reactor is configured such that the high-pressure reaction space is optimally utilized and contamination of workup steps or subsequent reactions arranged downstream of the high-pressure reaction with foam is substantially avoided. The invention further relates to a process for performing a continuous gas/liquid biphasic high-pressure reaction in the reactor.

Reactor for carrying out a gas-liquid two-phase high-pressure reaction with a foaming medium

A process for performing a continuous gas/liquid biphasic high-pressure reaction, wherein a gas and a liquid are introduced into a backmixed zone of a reactor and in the backmixed zone the gas is dispersed in the liquid by stirring, injection of gas and/or a liquid jet, a reaction mixture consecutively traverses the backmixed zone and a zone of limited backmixing, and a liquid reaction product is withdrawn at a reaction product outlet of the zone of limited backmixing, wherein the reactor comprises: an interior formed by a cylindrical vertically oriented elongate shell, a bottom and a cap, wherein the interior is divided by means of internals into the backmixed zone, the zone of limited backmixing and a cavity, a first cylindrical internal element which in the interior extends in the longitudinal direction of the reactor and which delimits the zone of limited backmixing from the backmixed zone, backmixing-preventing second internal elements in the form of random packings, structured packings or liquid-permeable trays arranged in the zone of limited backmixing and a third internal element which in the interior extends in the longitudinal direction of the reactor and is open at the bottom, wherein the third internal element forms the cavity in which gas bubbles collect and do not escape upwards, thus preventing the volume of the cavity from being occupied by liquid and reducing the reaction volume. The reaction volume of the reactor used in the process can be reversibly reduced in simple fashion. The invention further relates to a process for adapting the reaction volume of a reactor suitable for performing a gas/liquid biphasic high-pressure reaction having an outlet for a liquid reaction product in which an internal element is arranged so as to form a cavity open at the bottom in which gas bubbles collect and do not escape upwards, thus preventing the volume of the cavity from being occupied by liquid and reducing the reaction volume.

Method for carrying out a gas/fluid two-phase high-pressure reaction

A reactor for performing a reaction between two immiscible fluids of different density, comprising an interior formed by a cylindrical, vertically oriented elongate shell, a bottom and a cap, wherein the interior is divided by internals into a backmixed zone, a zone of limited backmixing preferably arranged below the backmixed zone and a plug-flow zone which are at least consecutively traversable by one of the fluids, wherein the backmixed zone comprises at least one inlet and the plug-flow zone comprises an outlet and the backmixed zone comprises at least one mixing apparatus selected from a stirrer, a jet nozzle and means for injecting the fluid of lower density, a first cylindrical internal element which in the interior extends in the longitudinal direction of the reactor, which delimits the zone of limited backmixing from the plug-flow zone and which comprises a first passage to the backmixed zone and a second passage to the plug-flow zone, a second internal element which delimits the backmixed zone from the plug-flow zone such that there is no direct fluid connection between the backmixed zone and the plug-flow zone, and backmixing-preventing third internal elements in the form of random packings, structured packings or liquid-permeable trays arranged in the zone of limited backmixing. The reactor allows an optimal residence time distribution in the reaction of the two immiscible fluids of different density. The invention further relates to a process for performing a continuous reaction in the reactor.

Reactor for carrying out a reaction between two non-miscible fluids of different densities

Process for the continuous production of an optically active carbonyl compound by asymmetric hydrogenation of a prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound with hydrogen in the presence of a homogeneous rhodium catalyst that has at least one chiral ligand, wherein a liquid reaction mixture comprising the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound is subjected in a first, backmixed reactor to a gas/liquid two-phase hydrogenation, and the liquid reaction mixture is then further hydrogenated in a second reactor, wherein the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound is employed in the first reactor in a concentration from 3% to 20% by weight. The process allows a high total conversion to the prochiral &#x3b1;,&#x3b2;-unsaturated carbonyl compound.

Continuous preparation of an optically active carbonyl compound by asymmetric hydrogenation

The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. In the apparatus of the invention, the diversion of an internal circulatory flow in the reactor is effected by means of a diversion pan which is arranged underneath a heat exchanger.

Apparatus and process for the continuous reaction of liquids with gases

The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. Here, the cooling medium surrounds the tubes of the heat exchanger of the apparatus of the invention whereas the reaction takes place in the tubes.

The invention relates to an improved process for vaporizing organic compounds and the further conversion thereof.

Single chamber vaporizer and use thereof in chemical synthesis

The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic polyamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric polyurethanes and thermal dissociation of the latter, in which the polyisocyanates produced and unusable residues are separated off at particular stages of the reaction and reusable by-products and intermediates are recirculated to preceding stages.

Process for preparing isocyanates

A process for mixing a liquid stored in a vessel, in which gas is sucked in from the gas phase present above the liquid interface with a suction apparatus present in the liquid, and released into it again for the gas-induced mixing of the liquid.

Process for mixing a liquid or mixture of a liquid and a fine solid present in an essentially self-containing vessel

The invention relates to a process for oxidizing at least one organic substance with oxygen, which comprises the following steps: The invention further relates to an apparatus for performing the process.

Process and apparatus for oxidizing organic compounds

A process for mixing a liquid or mixture of a liquid and a fine solid present in a vessel, in which the vessel is supplied with the same liquid or the same mixture as a motive jet of a jet nozzle which is present in the vessel and has a motive jet and a momentum exchange chamber, the suction region between motive nozzle and momentum exchange chamber being provided with a sheath which has a suction orifice below the central jet leading from the motive nozzle into the momentum exchange chamber.

A continuous process for producing polyamides, their oligomers or mixtures thereof, if appropriate with further reaction products, comprises reaction of aminonitriles or dinitriles and diamines or mixtures thereof, if appropriate together with further polyamide-forming monomers and/or oligomers, with an aqueous medium composed of aqueous monomer and oligomer extracts obtained from polyamide production by extraction of the polymer with water in a reactor which has a vertical longitudinal axis and through which there is a flow substantially in the longitudinal direction wherein water and/or the aqueous medium are introduced into the reactor at two or more different locations along the vertical longitudinal axis, wherein the aqueous medium is introduced at one or more locations.

Continuous method for the production of polyamides

In a process for the preparation of alkylaromatic compounds by reacting C-olefins, or alcohols from which C-olefins are formed under the reaction conditions, with an aromatic hydrocarbon in the presence of an alkylation catalyst, the reaction is carried out in a reactor cascade of at least two reactors, where each of the reactors comprises the alkylation catalyst, at least 80% of the aromatic hydrocarbon are fed into the first reactor of the reactor cascade, and at least 40% of the olefins are intermediately fed in after the first reactor.

Method for producing alkyl aromatic compounds

A process for preparing alkylamines by reacting olefins with ammonia under hydroaminating conditions over a calcined zeolitic catalyst in an adiabatically operated reactor unit, wherein the reaction mixture comprising the starting olefin, ammonia and the corresponding alkylamine is taken off at one or more points and brought into indirect thermal contact with the reaction mixture at one or more points in the reactor unit having in each case a lower concentration of alkylamine compared to the point from which the reaction mixture was taken off, is proposed.

Process for preparing alkylamines by reacting olefins with ammonia

The present invention relates to a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer and of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.

Method for the polymerization of cyclic ethers

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Ludwigshafen, Germany

Peter Zehner