Basf Se Corporation

Basf Aktiengesellschaft

Basfaktiengesellschaft

Andreas Wölfert

Gerhard Olbert

Stefan Rittinger

Holger Friedrich

Ulrich Penzel

Mark Wehinger

Eckhard Stroefer

Torsten Mattke

Markus Weber

Andreas Daiss

Aurelie Alemany

Heinz Rütter

Stefan Maixner

Wolfgang Mackenroth

Kai Thiele

Andreas Brodhagen

Bernd Sachweh

Joachim Pfeffinger

Eckhard Ströfer

Filip Nevejans

Heinz Drieβ

Willi Schmidt

Wolfgang Gmeiner

Michael Schönherr

Martin Karches

Hermann Ascherl

Martin Sohn

Bernhard Geissler

Christian Müller

Manfred Heilig

Heinrich-Josef Blankertz

Harald Jachow

Filip Deberdt

Herald Jachow

Heinz R&uuml;tter

Johannes Jacobs

Tsung-Chieh Cheng

Kerstin Heinen

Michael Lorenz

Andreas Spiegel

Carsten Knösche

Dieter Stützer

Christian Benz

Markus Maurer

Jochen Gauer

Rene Leuthold

Matthias Klötzer

Robert Kuhn

Tobias Lenke

Christian Tragut

Myung Un Won

Günter Renz

Heinz Driess

Jan Peter Bredehöft

Hans-Jürgen Pallasch

Frank Grzonkowski

Stephan Scholl

Markus LINSENBÜHLER

Häns-Jürgen Pallasch

The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F) with shaped bodies (F) that are smaller than the shaped bodies (F), wherein groups of m to n shaped bodies (F), m and n being an integer from 3 to 30 with n&#x3e;m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless manner with side face to side face and with their longitudinal axis aligned in vertical direction, virtually completely covering the cross section of the tray, to form modules (M), and the modules (M), optionally with cooperation of a joint filler material, with vertical alignment of the longitudinal axis of the shaped bodies (F), are joined to one another virtually seamlessly in a mosaic-like manner.

Modular catalyst monoliths

The invention relates to a reactor for carrying out heterogeneously catalyzed gas-phase reactions, having an internal element () or a plurality of internal elements () which are arranged in succession in the flow direction of the gas mixture of the heterogeneously catalyzed gas-phase reaction through the reactor (), where the internal elements extend over the entire reactor cross section, wherein the one or more internal elements () is/are at least partly made of a fiber composite ceramic material.

Reactor for carrying out heterogeneously catalysed gas phase reactions, and use of the reactor

A device D accommodated in a reactor R and containing a gas- and/or liquid-permeable bottom B, in the peripheral region of which is arranged a lateral boundary W which completely surrounds the bottom B and forms a volume V which is partially or completely filled with catalytic and/or non-catalytic moldings, there optionally being located on the side facing the bottom B in the upstream direction at least one noble metal and/or non-noble metal fabric, wherein a thermal insulation layer S is located on at least part of the surface of the inner side of the lateral boundary W of the device D, the material for the thermal insulation layer S being selected from the group consisting of ceramic material, microporous material and silicate fibers.

Basket-like device having wall insulation

The present invention comprises a process for purifying isocyanate-comprising residues.

Method for purifying residues containing isocyanates

The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber () to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice () arranged coaxially to the mixing chamber () and the phosgene being added through feed orifices () in at least two planes () arranged at right angles to the axis () of the mixing chamber (), or the phosgene being added through the orifice () arranged coaxially to the mixing chamber and the amine through the feed orifices () in at least two planes () arranged at right angles to the axis () of the mixing chamber (). At least one plane () is arranged upstream and at least one plane () downstream of the orifice () arranged coaxially to the mixing chamber () in main flow direction of the reaction mixture. The mean residence time of the reaction mixture in the mixing chamber () is not more than 20 ms.

Process for preparing aromatic isocyanates

The invention relates to a reactor () and a process for continuously preparing HS by converting a reactant mixture which comprises essentially gaseous sulfur and hydrogen over a catalyst, comprising a sulfur melt () at least in a lower subregion () of the reactor (), into which gaseous hydrogen is introduced. The catalyst is arranged in at least one U-shaped tube () which is partly in contact with the sulfur melt (), the at least one U-shaped tube () having at least one entry orifice () on a limb () above the sulfur melt (), through which the reactant mixture can enter the U-shaped tube () from a reactant region () of the reactor (), having a flow path within the at least one U-shaped tube, along which the reactant mixture can be converted in a reaction region comprising the catalyst (), and having at least one exit orifice () in another limb () through which a product can exit into a product region ().

Reactor, and method for the production of hydrogen sulfide

Hydrogen sulfide HS is prepared from a crude gas stream containing HS and polysulfanes (HS). The crude gas stream is passed at temperatures of from 114 to 165&#xb0; C. through catalytically active material present in a vessel, and sulfur is collected in the bottom of the vessel and recycled to the preparation of HS. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an HS-containing crude gas stream passed out of the reactor to between 114 to 165&#xb0; C., a vessel coupled to the cooler, the vessel including catalytically active material and a bottom for collecting sulfur obtained from the crude gas stream, and a line which is connected to the bottom of the vessel and opens into the cooler or into the reactor, for recycling sulfur.

Method and device for continuous production of hydrogen sulphide

The present invention describes a reactor () for continuously preparing hydrogen sulfide HS from hydrogen and sulfur, comprising a distributor device () for distributing gaseous hydrogen in a sulfur melt () present at least in a lower part of the reactor. The distributor device () is arranged in the sulfur melt () and comprises a distributor plate () which is arranged in the reactor () and has an edge () extending downward and, if appropriate, has passage orifices (). The hydrogen from a hydrogen bubble which forms below the distributor plate () is (for example through the passage orifices ()) distributed in the sulfur melt () via the distributor plate ().

Reactor and method for production of hydrogen sulphide

The invention relates to a process and to an apparatus for preparing hydrogen sulfide HS by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450&#xb0; C. and a sulfur excess in a reactor (). The sulfur excess corresponds to a ratio of excess sulfur to HS prepared of from 0.2 to 3 kg of sulfur per kg of HS prepared.

Method and device for the continuous production of hydrogen sulfide

An amine-containing mixture containing one or more amines, water, low-boilers and optionally high-boilers is fractionated by a process having the steps (iii) and (iv) and optionally the steps (i), (ii) and (v):

Process for fractionating water-containing crude amine mixtures from amine synthesis

A mixture containing one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein

In a process for mixing reactant streams () to produce a product stream () using a mixing configuration () having a number of reactant feed points, an excess component stream of one reactant is divided into two reactant substreams () and fed into the suction region () of a mixing space () at right angles to a deficient component () entering the mixing space ().

Method and device for reducing byproducts in the mixture of educt streams

Starting material streams are mixed in a mixer () for the phosgenation of amines by a process in which the reaction product () is removed in a closed loop and the starting material streams () contain organic solvents. The main streams () and/or part-streams () of the starting materials () come into contact with one another according to the countercurrent principle.

Method and device for the continuous production of organic mono or polyisocyanates

Growing community of inventors

Bad Rappenau, Germany

Andreas Wölfert