Basf Se Corporation

Carlos Tellaeche Herranz

Gerhard Olbert

Grigorios Kolios

Joaquim Henrique Teles

Klemens Massonne

Alexander Weck

Thomas Schaub

Ulrike Wegerle

Norbert Asprion

Richard Dehn

Bernd Zoels

Ellen Dahlhoff

Ahmad Dehestani

Oliver Trapp

Jochen Gauer

Alireza Rezai

Sven Thate

Roland Bauer

Wolfgang Ferstl

Andrea Gienger

Jochen Götz

Reinhold Höchst

Arnold Kühling

Jedrzej Wysocki

Till Christian Brüggemann

Steffen Waglöhner

The present invention relates to a gastight multilayer composite tube having a heat transfer coefficient of &#x3e;500 W/m/K and comprising at least two layers, namely a layer of nonporous monolithic oxide ceramic and a layer of oxidic fiber composite ceramic, a connecting piece comprising at least one metallic gas-conducting conduit which in the longitudinal direction of the composite tube overlaps in a region at least two ceramic layers, where the one ceramic layer comprises a nonporous monolithic ceramic and the other ceramic layer comprises a fiber composite ceramic, and also the use of the multilayer composite tube as reaction tube for endothermic reactions, radiation tubes, flame tubes or rotary tubes.

Gas-tight, heat-permeable multilayer ceramic composite tube

The present invention relates to a process for preparing C-Clactams, in which a C-C-alkyl nitrite is reacted with a C-C-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C-C-cyclohexanone oxime which is then converted further to a C-Clactam; the C-Calcohol formed is recycled into the preparation of the C-C-alkyl nitrite.

Method for producing C4-C15 lactams

A method is proposed for installing monoliths () each formed of a ceramic block having a multiplicity of mutually parallel channels wherethrough the reaction gas mixture of a heterogeneously catalyzed gas phase reaction can flow in a reactor () for conducting heterogeneously catalyzed gas phase reactions, wherein said monoliths () are stacked side by side and on top of each other in the reactor interior, wherein the monoliths are sealed off from each other and from the inner wall of said reactor () by mats () each comprising an intumescent mat which before installation in said reactor () were completely enveloped in a polymeric film, wherein the interior enclosed by the polymeric film and containing said mat () is evacuated and wherein the interior enclosed by the polymeric film and containing said mat () is devacuated after installation in said reactor ().

Installing monoliths in a reactor for conducting heterogeneously catalyzed gas phase reactions

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 in the form of a cylinder or prism wherein

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Heidelberg, Germany

Carlos Tellaeche Herranz