Device for feeding reactor initiators

Details Device for feeding reactor initiators Device for feeding reactor initiators

C - Chemistry, Metallurgy

08

F

C08F 10/02 (2006.01) B01F 5/04 (2006.01) B01F 5/06 (2006.01) B01J 3/04 (2006.01) B01J 8/06 (2006.01) B01J 19/24 (2006.01) B01J 19/26 (2006.01) C08F 2/00 (2006.01) B01F 5/00 (2006.01) B01F 13/10 (2006.01)

Patent

CA 2430679

The invention relates to a method for producing polyethylene in tubular reactors with or without autoclaves, whereby a liquid medium current containing ethylene and comonomers is supplied to a radical chain initiator with or without cold ethylene. Torsion is produced between two currents (61, 62) to be mixed at an angle (66), or a torsion element (20, 80) is provided in the cross-section of the current (27, 28). A contraction of the cross-section (63, 67, 71) is formed in the region of a feeding point (72, 81) for a radical chain initiator, at which point the radical chain initiator is supplied in the current having torsion (61, 62, 70), through an eccentric, optimised outlet (44) of a feeding finger (40).

L'invention concerne un procédé de fabrication de polyéthylène dans des réacteurs tubulaires avec ou sans autoclaves, consistant à alimenter un initiateur de chaînes de radicaux avec ou sans éthylène froid dans un courant de milieu liquide contenant de l'éthylène et des comonomères. Selon l'invention, on produit une torsion entre deux courants (61, 62) devant être mélangés à un angle (66), ou on dispose un élément de torsion (20, 80) dans la section transversale d'écoulement (27, 28). La zone d'alimentation (72, 81) d'initiateur de chaînes de radicaux comporte un rétrécissement de la section transversale (63, 67, 71) au niveau de laquelle l'initiateur de chaînes de radicaux est alimenté dans le courant (61, 62, 70) affublé d'une torsion, au travers d'une ouverture de sortie excentrique optimisée (44) d'un doigt d'alimentation (40).

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