Gordon Frederick Stuntz

US Patent:

6339181, Jan 15, 2002

Filed:

Nov 9, 1999

Appl. No.:

09/436561

Inventors:

Tan-Jen Chen - Kingwood TX
Philip A. Ruziska - Kingwood TX
Gordon F. Stuntz - Baton Rouge LA
Paul K. Ladwig - Randolph NJ

Assignee:

ExxonMobil Chemical Patents, Inc. - Houston TX

International Classification:

C07C 406

US Classification:

585653, 585300, 585302, 585330, 208 75, 208 78, 208 80, 208 92, 208113

Abstract:

This invention relates to a process to produce propylene from a hydrocarbon feed stream, preferably a naphtha feed stream, comprising C5 and C6 components wherein a light portion having a boiling point range of 120Â C. or less is introduced into a reactor separately from the other components of the feed stream.

US Patent:

6388152, May 14, 2002

Filed:

Mar 2, 2000

Appl. No.:

09/517554

Inventors:

Paul K. Ladwig - Randolph NJ
John E. Asplin - Houston TX
Gordon F. Stuntz - Baton Rouge LA
Tan-Jen Chen - Kingwood TX

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 406

US Classification:

585330, 585648, 585651, 585654, 585324, 585329, 208118, 20812001, 208122, 208 71, 208 67

Abstract:

A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration zone, and a fractionation zone. The naphtha feedstream is contacted in the reaction zone with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0. 7 nanometers at reaction conditions which include temperatures ranging from about 500Â to 650Â C. and a hydrocarbon partial pressure from about 10 to 40 psia. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone. Overhead products from the reaction zone are passed to a fractionation zone where a stream of C products is recovered and a stream rich in C and/or C olefins is recycled to the stripping zone.

US Patent:

6409911, Jun 25, 2002

Filed:

Sep 13, 2000

Appl. No.:

09/660695

Inventors:

Karl G. Strohmaier - Port Murray NJ
David E. W. Vaughan - Flemington NJ
Tan Jen Chen - Kingwood TX
Philip A. Ruziska - Kingwood TX
Brian Erik Henry - Baton Rouge LA
Gordon F. Stuntz - Baton Rouge LA
Stephen M. Davis - Baton Rouge LA

Assignee:

ExxonMobil Chemical Patents, Inc. - Houston TX

International Classification:

C01G 1100

US Classification:

208118, 208119, 20812001

Abstract:

Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions and high catalytic cracking activity a method for their preparation and their use as FCC catalysts. More particularly, the new SAPOs have a high silica:alumina ratio and favorable Si atom distribution. The new SAPOs may have a small crystal size and may be synthesized from a single-phase synthesis solution.

US Patent:

6489530, Dec 3, 2002

Filed:

May 19, 2000

Appl. No.:

09/574262

Inventors:

Gordon F. Stuntz - Baton Rouge LA

Assignee:

Exxon Mobile Chemical Patents Inc. - Houston TX

International Classification:

C07C 406

US Classification:

585648, 585651, 585654, 585502, 585518, 208118, 20812001, 208122

Abstract:

A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha feedstream is contacted in the reaction zone with a catalyst under catalytic conversion concditions. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone. A stream rich in C and/or C olefins is recycled to the stripping zone.

US Patent:

6569315, May 27, 2003

Filed:

Mar 16, 2001

Appl. No.:

09/811168

Inventors:

Gordon F. Stuntz - Baton Rouge LA
William E. Winter - Baton Rouge LA

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 5102

US Classification:

208 77, 208 74, 208 72

Abstract:

The invention relates to a process for converting cycle oils produced in catalytic cracking reactions into olefinic naphthas. More particularly, the invention relates to a process for hydroprocessing a catalytically cracked light cycle oil, and then re-cracking in an out-board FCC reactor it in order to form a naphthenic blend-stock.

US Patent:

6579444, Jun 17, 2003

Filed:

Dec 17, 2001

Appl. No.:

10/022948

Inventors:

Joseph L. Feimer - Brights Grove, CA
David N. Zinkie - Sarnia, CA
Myles W. Baker - Fairfax VA
Bal K. Kaul - Randolph NJ
Gordon F. Stuntz - Baton Rouge LA
Joseph T. OBara - Parsippany NJ

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 2904

US Classification:

208243, 208208 R, 208244, 585820

Abstract:

A process for removing sulfur compounds from hydrocarbon feedstreams, particularly those boiling in the naphtha range, by contacting the feedstream with an adsorbent comprised of cobalt and one or more Group VI metals selected from molybdenum and tungsten on a refractory support. This invention also relates to a process wherein a naphtha feedstream is first subjected to selective hydrodesulfurization to remove sulfur but not appreciably saturate olefins. A product stream is produced containing mercaptans that are removed by use of the cobalt-containing adsorbents of the present invention.

US Patent:

6610197, Aug 26, 2003

Filed:

Oct 12, 2001

Appl. No.:

09/977000

Inventors:

Gordon F. Stuntz - Baton Rouge LA
Robert C. W. Welch - Baton Rouge LA
Thomas R. Halbert - Baton Rouge LA

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 4500

US Classification:

208210, 208209, 208218, 208 14, 208 15, 208 16, 208 17

Abstract:

The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165Â F. and a heavy fraction boiling above about 165Â F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.

US Patent:

6610255, Aug 26, 2003

Filed:

May 9, 2000

Appl. No.:

09/568864

Inventors:

Guang Cao - Branchburg NJ
Todd Richard Steffens - Randolph NJ
Gordon Frederick Stuntz - Baton Rouge LA
Daniel Paul Leta - Flemington NJ
William Russell Adamson - Randolph NJ
Albert Yuan-Hsin Hu - Baton Rouge LA

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

B01J 808

US Classification:

422144, 422139, 422145, 422147, 502 41

Abstract:

A fluid catalytic cracking (FCC) process performed in a FCC process unit containing a reactor, a regenerator and an outboard vessel. Catalyst particles containing vanadium are circulated back and forth from the reactor to the regenerator and back and forth from the regenerator and the outboard vessel. The outboard vessel contains a vanadium trap material that removes vanadium from at least a portion of the catalyst particles.