Robert D Olson

US Patent:

6472483, Oct 29, 2002

Filed:

Feb 28, 2000

Appl. No.:

09/514167

Inventors:

Mark Gregory Goode - Hurricane WV
Mark Williams Blood - Hurricane WV
Timothy Joseph Howley - Charleston WV
Billy Jack Garner - Charleston WV
Robert Darrell Olson - Charleston WV
Ralph Niels Hesson - Victoria TX
Thomas Walter Pilgrim - Port Lavaca TX
John Roberts Parrish - Cross Lanes WV

Assignee:

Union Carbide Chemicals Plastics Technology Corporation - Danbury CT

International Classification:

C08F 234

US Classification:

526 88, 526 65, 526 70

Abstract:

The liquid content of granular product removed from a fluidized bed polymerization reactor operating in the condensing mode is reduced or minimized by removing the product from a level in the fluidized bed which is about 0. 21 to about 0. 59 of its height while venting the product discharge tank to a point higher in the fluidized bed.

US Patent:

20050137364, Jun 23, 2005

Filed:

Dec 23, 2003

Appl. No.:

10/745456

Inventors:

Ping Cai - Hurricane WV, US
Robert Olson - Charleston WV, US
Ronald Eisinger - Charleston WV, US
Fathi Hussein - Cross Lanes WV, US
Robert Hagerty - La Porte TX, US
Mark Blood - Hurricane WV, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F002/00

US Classification:

526068000, 526901000

Abstract:

A continuous gas fluidized bed polymerization process for the production of a polymer from a monomer including continuously passing a gaseous stream comprising the monomer through a fluidized bed reactor in the presence of a catalyst under reactive conditions; withdrawing a polymeric product and a stream comprising unreacted monomer gases; cooling said stream comprising unreacted monomer gases to form a mixture comprising a gas phase and a liquid phase and reintroducing said mixture into said reactor with sufficient additional monomer to replace that monomer polymerized and withdrawn as the product, wherein said liquid phase is vaporized, and wherein the stream comprises an induced condensing agent selected from the group consisting of alkanes, cycloalkanes, and mixtures thereof, the induced condensing agent having a normal boiling point less than 25 C.

US Patent:

20130291720, Nov 7, 2013

Filed:

Dec 13, 2011

Appl. No.:

13/992465

Inventors:

Mark W. Blood - Hurricane WV, US
Randall L. Force - Charleston WV, US
Theodore D. Duncan - Elkview WV, US
Daniel W. Mosser - Hurricane WV, US
Donald A. Fischer - Cross Lanes WV, US
Robert D. Olson - Charleston WV, US

Assignee:

UNIVATION TECHNOLOGIES, LLC - Houston TX

International Classification:

C08F 6/00
F25J 3/08

US Classification:

95 39, 62618

Abstract:

Provided are systems and methods for separating a purge gas recovered from a polyethylene product. The method includes recovering a polyethylene product containing one or more volatile hydrocarbons from a polymerization reactor and contacting the polyethylene product with a purge gas to remove at least a portion of the volatile hydrocarbons to produce a polymer product having a reduced concentration of volatile hydrocarbons and a purge gas product enriched in volatile hydrocarbons. The purge gas product is compressed to a pressure of 2,500 kPaa to 10,000 kPaa, and is then cooled and separated into at least a first product, a second product, and a third product. A portion of one or more of the first, second, or third products is then recycled as a purge gas, to the polymerization reactor, or to the purge gas product enriched in volatile hydrocarbons prior to compression, respectively.