Process and apparatus for separating diluent from polymer...

Details Process and apparatus for separating diluent from polymer... Process and apparatus for separating diluent from polymer...

C - Chemistry, Metallurgy

08

F

C08F 2/14 (2006.01) C08F 10/00 (2006.01) C08F 210/06 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2498763

Polymer solids are maintained in an intermediate pressure zone for a desired polymer solids residence time and then transferred to a purge zone or other lower pressure zone. An increase in the polymer solids residence time in the intermediate pressure zone allows more diluent to flash or separate, thereby avoiding or reducing the need for a low pressure flash zone. A fluff chamber may be disposed between the intermediate pressure zone and a lower pressure zone. transporter tank may be used to transport polymer solids after the intermediate pressure zone.

Selon l'invention, des solides polymériques sont maintenus dans une zone de pression intermédiaire pendant une durée de séjour désirée, puis transférés vers une zone de purge ou autre zone de pression inférieure. Un séjour plus long des solides polymériques dans la zone de pression intermédiaire permet la vaporisation instantanée ou la séparation d'une plus grande quantité de diluant, ce qui limite ou élimine la nécessité d'une zone de détente. Une chambre de gonflement peut être disposée entre la zone de pression intermédiaire et la zone de pression inférieure. Un réservoir de transport peut être utilisé pour acheminer les solides polymériques après la zone de pression intermédiaire.

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