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Verbunde keramischer Hohlfasern, Verfahren zu deren Herstellung und deren Verwendung

Composite structure for gas and liquid filtration and for high temperature applications, such as gas separations with the exception of oxygen removal comprises a hollow fiber made from gas- or liquid-transporting ceramic material
 
: Kilgus, M.; Schiestel, T.

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Frontpage ()

DE 102005005467 A: 20050204
DE 2005-102005005467 A: 20050204
WO 2006-EP539 A: 20060121
DE 102005005467 A1: 20060810
German
Patent, Electronic Publication
Fraunhofer IGB ()

Abstract
Beschrieben werden Verbunde, umfassend mindestens eine Hohlfaser aus Gas- oder Fluessigkeits-transportierendem keramischem Material, deren aeussere Oberflaeche mit der aeusseren Oberflaeche der gleichen oder einer anderen Hohlfaser in Kontakt steht und die Kontaktstellen durch Sintern verbunden sind. Weitere Verbunde umfassen mindestens eine Hohlfaser aus Gas- oder Fluessigkeits-tranportierendem keramischem Material und an mindestens einer Stirnflaeche ein Anschlusselement fuer die Zu- oder Abfuehrung von Fluiden, wobei Hohlfasern mit dem Anschlusselement durch Sintern verbunden sind. Die Verbunde lassen sich zur Gewinnung von Gasen aus Gasgemischen einsetzen.

 

WO 2006081957 A1 UPAB: 20061101 NOVELTY - Composite structure comprises a hollow fiber made from gas- or liquid-transporting ceramic material having an outer surface in contact with the outer surface of a similar fiber, in which the contact points are joined by sintering. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a process for the production of the composite structure comprising forming a green fiber by extruding through an annular nozzle a composition containing a polymer, an oxide ceramic or a precursor for a ceramic in the known manner, forming a green composite from one or more green hollow fibers by producing contacts between the outer surfaces of the green hollow fibers and thermally treating the green composite produced to remove the polymer and to form the contact between the ceramic hollow fibers and optionally the oxide ceramic. USE - For gas and liquid filtration and for high temperature applications, such as gas separations with the exception of oxygen removal. ADVANTAGE - The composite structure has high stability and is easy to handle.

: http://publica.fraunhofer.de/documents/N-51826.html