Title: Process and equipment for making carbon fibre
Application Number: 88100656 Application Date: 1988.02.06
Publication Number: 1020259 Publication Date: 1988.08.17
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10C3/06;D01F9/12
Applicant(s) Name: Didier Engineering GmbH (DE) Alfredstrasse 28 D-43 Address:
Inventor(s) Name: Heirich Patalon;Horst Mathejka;Rudolf Geier;Rudolf
Attorney & Agent: FAN WEIMIN
Abstract:
    In a process for producing carbon fibres from coal tar pitch, the coal tar pitch is filtered before being spun and the pitch filtrate is distilled in a thin-film evaporator in order to increase its softening point over 260 DEG C. A pure and homogeneous hard pitch is thus obtained, without the re-formation of infusable, chinolin-insoluble components. The most difficult and cost intensive step of the fibre production process, namely the thermal aftertreatment of the spun pitch fibres, can thus be easily and quickly carried out. The subsequent thermal treatment is carried out in a cyclic treatment installation.
Time: 3