06319997 is referenced by 40 patents and cites 33 patents.

A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the polymer solids which remain after removal of about 50 to 100% of the inert diluent therefrom to a second flash tank at a lower pressure.

Title
Continuous slurry polymerization volatile removal
Application Number
9/679959
Publication Number
6319997 (B1)
Application Date
October 5, 2000
Publication Date
November 20, 2001
Inventor
Scott T Roger
Zachary
LA, US
Thomas W Towles
Baton Rouge
LA, US
James A Kendrick
Baton Rouge
LA, US
Agent
S D Prodnuk
US
D J Alexander
US
Assignee
ExxonMobil Chemical Patents
TX, US
IPC
C08F 2/00
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