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:
Jan. 13, 2015
Filed:
Aug. 17, 2014
Chevron Phillips Chemical Company, Lp, The Woodlands, TX (US);
Scott E. Kufeld, Houston, TX (US);
Joel A. Mutchler, Kingwood, TX (US);
Ralph W. Romig, Kingwood, TX (US);
John D Stewart, Friendswood, TX (US);
Catherine M Gill, Kingwood, TX (US);
Bruce E. Kreischer, Kingwood, TX (US);
John D. Hottovy, Kingwood, TX (US);
Chevron Phillips Chemical Co., The Woodlands, TX (US);
Abstract
Loop reactors for olefin polymerization and processes utilizing such loop reactors are described herein. In one or more embodiments, the loop reactor generally includes a plurality of vertical sections; a plurality of elbow sections connecting the vertical sections to either a horizontal section having a horizontal length (L) or another elbow section, at least one elbow section having an internal diameter (d), a radius (R) of an inner curvature and a chord length (W) and wherein the horizontal length (L) is from 0 feet to 3 feet, the chord length (W) is 250 inches or less and a ratio (R/d) of the radius (R) of the inner curvature to the internal diameter (d) of the at least one elbow section is maintained from 2 to 4; and at least one loop reaction zone configured to polymerize an olefin monomer in the presence of a liquid diluent into a slurry comprising particles of a polyolefin polymer.