06262191 is referenced by 248 patents and cites 9 patents.

A process and apparatus for passing a polymerization effluent, comprising solid polymer, unreacted monomer, diluent and minor amounts of contaminants, to a high pressure flash where most of the fluid components are flashed and wherein a slip stream comprising diluent and minor amounts of monomer is separated from the bulk of the flashed fluid components. The slip stream is subjected to olefin removal to give an essentially olefin-free stream for recycle to a catalyst mud preparation area. The bulk of the flashed fluid components are recycled directly back to the polymerization zone without expensive olefin removal, although treatment to remove other contaminants can optionally be performed. The polymer and entrained fluid is passed to a low pressure flash zone where the fluids are flashed off, compressed and joined with the flash from the high pressure flash tank. Because the bulk of the fluids are removed in the high pressure flash, compression and cooling of product fluids prior to recycle is kept to a minimum.

Title
Diluent slip stream to give catalyst wetting agent
Application Number
9/265286
Publication Number
6262191 (B1)
Application Date
March 9, 1999
Publication Date
July 17, 2001
Inventor
Ragavan Vaidyanathan
Houston
TX, US
Timothy Roetman
Houston
TX, US
Scott E Kufeld
Houston
TX, US
David H Burns
Houston
TX, US
John D Hottovy
Bartlesville
OK, US
Agent
Polly C Owen
US
Assignee
Phillips Petroleum Company
OK, US
IPC
C08F 2/06
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