Univation Technologies, LLC

Ted A Powell

Gary David Mohr

Agapios Kyriacos Agapiou

Michael E Muhle

Zerong Lin

David Michael Glowczwski

Kevin Bruce Stavens

Edward F Smith

Keith Wesley Trapp

Michael E Sieloff

Robert Olds Hagerty

Fathi David Hussein

F David Hussein

Randall B Laird

David F Hussein

A method of treating a gas phase fluidized bed reactor and a method of polymerizing olefins in a gas phase fluidized bed reactor in the presence of a catalyst prone to cause sheeting by introducing a chromium-containing compound into the reactor and forming a high molecular weight polymer coating on the walls of the reactor. Furthermore, a device for and method of introducing the chromium-containing compound into the fluidized bed reactor at a plurality of locations in proximity to a lower section of a bed section wall of the fluidized bed reactor, and forming a high molecular weight polymer coating on the bed section wall.

Methods and devices for polymerization

A method for treating at least one interior surface (for example, a bed wall) of a fluidized bed polymerization reactor system, including by applying a solution catalyst (preferably at least substantially uniformly and in liquid form) to each surface, and optionally (where a catalyst component of the solution catalyst comprises at least one chromium containing compound) oxidizing at least some of the applied chromium containing compound in a controlled manner.

Methods for applying solution catalysts to reactor surfaces

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LaPorte, TX, United States of America

Ted A Powell