Powder transfer device and polyolefin production process

Details Powder transfer device and polyolefin production process Powder transfer device and polyolefin production process

2008-12-10

2010-11-16

Teskin, Fred M (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in two or more physically distinct zones

C526S088000, C526S920000, C422S134000, C034S582000

Reexamination Certificate

active

07834108

ABSTRACT:
The present invention provides a powder transfer device that has a simple construction, yet enables the powder discharge rate to be easily controlled, as well as a polyolefin powder production process using such a powder transfer device. A powder transfer device includes a downcomer which extends downward, and a gas slider situated below the downcomer. The gas slider has, on a side thereof facing an opening at a bottom end of the downcomer, a gas dispersion plate in which a plurality of gas outlets are formed.

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