C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 2/34 (2006.01) B01J 8/00 (2006.01) B01J 8/24 (2006.01)
Patent
CA 2234510
In order to discharge the gas, which enters together with powder polymer through a polymer discharge pipe from a gas-phase polymerization vessel into a sedimentation tank, from the sedimentation tank, the sedimentation tank is connected by a gas discharge pipe to the portion of the lower pressure than the pressure in the sedimentation tank of a gas-phase circulation system for circulating the gas between the outside and inside of the gas-phase polymerization vessel, so that the mass of powder is not formed in the gas discharge pipe connecting the gas-phase polymerization vessel and the sedimentation tank.
Afin d'évacuer le gaz - qui entre avec le polymère en poudre à travers un tuyau d'évacuation de polymère provenant d'une cuve de polymérisation en phase gazeuse pour rejoindre une cuve de décantation - de la cuve de sédimentation, cette dernière cuve est connectée, via un tuyau d'évacuation de gaz, à la partie dont la pression est inférieure à celle de la cuve à décantation d'un système de circulation en phase gazeuse permettant de faire circuler le gaz entre l'extérieur et l'intérieur de la cuve de polymérisation en phase gazeuse, de telle façon que la masse de poudre ne se forme pas dans le tuyau d'évacuation des gaz connectant la cuve de polymérisation en phase gazeuse à la cuve de décantation.
Arase Tomohiro
Kikuchi Yoshiaki
Matsuda Shotaro
Ohtani Satoru
Yamamoto Ryoichi
Mitsui Chemicals Incorporated
Smart & Biggar
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