Method and device for removing volatile components from...

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 6/00 (2006.01) B01D 3/06 (2006.01) B01D 19/00 (2006.01) B29C 47/10 (2006.01) B29C 47/76 (2006.01)

Patent

CA 2404774

The invention relates to a method and device for removing volatile components, especially solvents, monomers or oligomers, from polymer materials or polymer solutions by evaporating the volatile components from the pre-heated polymer materials in the form of free falling films, strands (4) or foaming liquids in an evaporator system (1). According to the inventive method, once partial or full degassing of the volatile components has occurred in the degassing chamber (9) of the evaporator system (1), the degassed polymer material (4) is directly received by a discharge conveyor device (5) on the lower end of the vaporization system (1), whereby the polymer is prevented from coming into contact with the inner wall of the evaporator system (1).

L'invention concerne un procédé et un dispositif pour enlever des composants volatils, en particulier des solvants, des monomères ou des oligomères, contenus dans des matériaux polymères. Ces composants volatils sont enlevés par évaporation des matériaux polymères préchauffés, sous la forme de films à chute libre, de cordons (4) ou de liquides moussants, dans une installation d'évaporation (1). Pendant la mise en oeuvre du procédé, après l'élimination partielle ou complète des composants volatils par dégazage dans la chambre de dégazage (9) de l'installation d'évaporation (1), les matériaux polymères (4) dégazés sont pris en charge et extraits à l'extrémité inférieure de l'installation d'évaporation (1), directement par un dispositif de transport d'extraction (5), un contact des polymères avec la paroi de l'installation d'évaporation (1) étant ainsi évité.

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