Method and apparatus for taking sample

Details Method and apparatus for taking sample Method and apparatus for taking sample

G - Physics

01

N

G01N 1/20 (2006.01) B01D 35/02 (2006.01) B01J 8/00 (2006.01)

Patent

CA 2220686

A method and an apparatus for taking sample from a flowing suspension formed by polymer particles and hydrocarbon diluent in olefin polymerization, which comprises at least one filter means situated at the plane of inside surface of flow space, which filter means is furnished with such perforation, where the size of pores is essentially smaller than the smallest particle size of the catalyst used in the polymerization. The perforation size of the filter means is preferably 0.1-10 µm, preferably between 0.2-1 µm.

Cette invention concerne un procédé et un appareil de prélèvement d'échantillons dans une suspension en écoulement formée de particules de polymères et d'un diluant à base d'hydrocarbures lors de la polymérisation d'oléfines. Cet appareil comprend au moins un système de filtre situé sur le plan de la surface interne d'un espace d'écoulement, lequel système de filtre comporte des perforations dont la taille des pores est sensiblement inférieure à la taille la plus réduite des particules du catalyseur utilisé durant la polymérisation. La taille des perforations du filtre varie de préférence entre 0,1 et 10 µm, et, idéalement, entre 0,2 et 1 µm.

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