Russell Everett Reid

US Patent:

20060030684, Feb 9, 2006

Filed:

Oct 11, 2005

Appl. No.:

11/247096

Inventors:

Christopher Lobue - Montgomery TX, US
Gilbert Valdez - Pearland TX, US
Daniel Herndon - League City TX, US
C. Baxter - League City TX, US
Russell Reid - Dayton TX, US

International Classification:

C08F 2/00

US Classification:

526064000, 526088000, 526237000, 526348700, 526348200, 526348300, 526348400, 526348500

Abstract:

Polyolefin product produced using process conducted in apparatus for olefin polymerization which includes one or more shell and tube olefin polymerization reactors, each of which has an olefin polymerization reaction mixture inlet connection and a crude polyolefin product outlet connection. Each reactor is equipped with a recirculation system including a pump arranged to circulate a reaction mixture through the tube side of the reactor independently of the introduction of olefin polymerization reaction mixture into the reactor. The apparatus may also include an inlet reaction mixture distribution manifold and an outlet polymerization reaction mixture collection manifold interconnecting the reactors for operation in parallel. The apparatus also includes catalyst composition and catalyst modifier inlets for each reactor arranged such that a catalyst modifier to may be introduced into each reactor at a rate which is independent of the introduction of catalyst composition.