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:
Nov. 20, 2012
Filed:
Sep. 21, 2009
Thibault Dumas, Strasbourg, FR;
Kevin Peter Ramsay, Livingston, GB;
Thibault Dumas, Strasbourg, FR;
Kevin Peter Ramsay, Livingston, GB;
Ineos Europe Limited, Hampshire, GB;
Abstract
The present invention relates to an apparatus and a process for polymerization, and, in particular, provides an apparatus for gas phase fluidised bed polymerization of olefins, which apparatus comprises: A) a first section which is an upright cylindrical section having a diameter, D, and cross-sectional area, A, and B) a second section, provided vertically above the first section and centered about a common vertical axis to the upright cylindrical first section, the base of the second section having a cylindrical cross-section of diameter Dand being joined to the top of the first section, and the horizontal cross-sectional area of the second section above its base being greater than the cross-sectional area of the first section, characterized in that: i) Dis greater than 4.5 meters, and ii) the second section has a maximum horizontal cross-sectional area, A, which is between 3.2 and 6 times the cross-sectional area, A, of the first section.