Alan Howard Bitzer

US Patent:

7973111, Jul 5, 2011

Filed:

May 28, 2004

Appl. No.:

10/857188

Inventors:

Thanh Tri Nguyen - Sugar Land TX, US
Tom Eugene Cushman - Humble TX, US
John Stevenson - Crosby TX, US
Alan Bitzer - Houston TX, US

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C08F 2/38
B01J 19/00
B01J 8/18

US Classification:

526 82, 526 83, 526 84, 526 85, 422131, 422139

Abstract:

Disclosed is a method to safely terminate a runaway reaction within a reaction vessel, comprising: sensing an increase in pressure in the reaction vessel, opening a barrier blocking a flow path into the reactor, wherein the barrier opening is achieved via a mechanical response to the sensed increase in pressure, and injecting a kill agent into the reaction vessel via the opened flow path, thereby terminating the reaction. Also disclosed is a system for performing the method. The system functions without an external electrical source and is therefore compliant with ASME standards.

US Patent:

47677350, Aug 30, 1988

Filed:

Feb 2, 1987

Appl. No.:

7/009712

Inventors:

John A. Ewen - Houston TX
Alan H. Bitzer - Houston TX

Assignee:

Cosden Technology, Inc. - Dallas TX

International Classification:

C08F 464

US Classification:

502109

Abstract:

A process for pretreating a Ziegler-type catalyst for use in olefin polymerization reactions. An olefin monomer is aded to a fluid carrier stream containing a Ziegler-type catalyst. The carrier stream containing the monomer and the catalyst is passed through an elongated tubular reactor at a flow rate sufficient to provide a residence time in the tubular reactor of less than 1 minute and under temperature conditions to prepolymerize the catalyst within the tubular reactor without plugging of the reactor. In a specific embodiment the residence time within the reactor is no more than 10 seconds, and more particularly, no more than 2 seconds.

US Patent:

51225832, Jun 16, 1992

Filed:

Nov 19, 1990

Appl. No.:

7/615079

Inventors:

John A. Ewen - Houston TX
Alan H. Bitzer - Houston TX
David L. Gressett - Galena Park TX
Herbert G. Hummel - Pasadena TX

Assignee:

Fina Technology, Inc. - Dallas TX

International Classification:

C08F 464

US Classification:

526125

Abstract:

The invention provides a process for increasing the efficiency of pre-polymerized catalysts used in the polymerization of olefins. The invention includes contacting a pre-polymerized catalyst with a cocatalyst or a mixture of cocatalyst and an electron donor prior to introducing the catalyst into a polymerization reaction zone.