The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2007
Filed:
Jun. 19, 2001
Karin H Knudsen, Porsgrunn, NO;
Willy Wilhelmsen, Langesund, NO;
Hans Narvestad, Stathelle, NO;
Odd J. Vardal, Skien, NO;
Ingrid S. Melaaen, Porsgrunn, NO;
Karin H Knudsen, Porsgrunn, NO;
Willy Wilhelmsen, Langesund, NO;
Hans Narvestad, Stathelle, NO;
Odd J. Vardal, Skien, NO;
Ingrid S. Melaaen, Porsgrunn, NO;
Borealis Technology Oy, Porvoo, FI;
Abstract
A degassing apparatus for use with a polymerisation reactor is disclosed. Slurry from the reactor is discharged into a flask tank () in which monomers or dilluent vaporise to form a gas. Filler units () are provided at the upper part of the flash tank (). They may be selectively connected to the flash tank by valves (). No cyclone etc. is provided between the flash tank and the filter () and these particles may then fall back into the flash tank (). The filters may be separately isolated for cleaning or replacement.