Patrick G Maher

US Patent:

7053260, May 30, 2006

Filed:

Jun 13, 2002

Appl. No.:

10/170939

Inventors:

Teng Xu - Houston TX, US
Paul N. Chisholm - Houston TX, US
Stephen Neil Vaughn - Kingwood TX, US
Shun Chong Fung - Bridgewater NJ, US
Keith Holroyd Kuechler - Friendswood TX, US
James R. Lattner - Seabrook TX, US
Kenneth Ray Clem - Humble TX, US
Patrick J. Maher - Kingwood TX, US
Dean C. Draemel - Kingwood TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 1/20

US Classification:

585638, 585639, 585640, 502 38, 502 39, 502 41, 502 42

Abstract:

The present invention provides a process for making an olefin product from an oxygenate feedstock which comprises:a) contacting the feedstock in a reaction zone with a catalyst comprising i) a molecular sieve having defined pore openings and ii) a CO oxidation metal, under conditions effective to convert the feedstock into an olefin product stream comprising C–Colefins and to form carbonaceous deposits on the catalyst so as to provide a carbon-containing catalyst;b) contacting at least a portion of the carbon-containing catalyst with a regeneration medium comprising oxygen in a regeneration zone comprising a fluid bed regenerator having a dense fluid phase and a dilute fluid phase under conditions effective to obtain a regenerated catalyst portion, wherein the difference between the temperature of the dilute phase and the temperature of the dense phase is no greater than 100 C. ;c) introducing said regenerated catalyst portion into said reaction zone; andd) repeating steps a)–c).

US Patent:

7655826, Feb 2, 2010

Filed:

Apr 12, 2005

Appl. No.:

11/104315

Inventors:

Charles M. Yarbrough - Baton Rouge LA, US
Vijay Swarup - Prairieville LA, US
Patrick Joseph Maher - Kingwood TX, US
Albert Y Hu - Baton Rouge LA, US
Michael Walter Bedell - Baton Rouge LA, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 4/02
C07C 1/00
C10G 9/00
C10G 11/00

US Classification:

585653, 585638, 585639, 585640, 585648, 585651, 208 67, 208106, 208113, 208121, 208130

Abstract:

This invention relates to a method of making an olefin from a dialkyl ether comprising (a) introducing an ether having a formula CHCHinto a thermal or catalytic cracking unit processing a hydrocarbon feedstock; and (b) decomposing at least a portion of the ether to form an olefin having a formula CHand/or CHand an alcohol having a formula CHand/or CHOH, wherein x and y independently range from about 1 to about 30. This invention also relates to a method of reducing coking in a thermal or catalytic cracking unit comprising (a) introducing an ether, having a formula CHOCH, into the cracking unit processing a hydrocarbon feedstock in an amount effective to reduce coke formation relative to processing the hydrocarbon feedstock in the absence of the ether, wherein x and y independently range from about 1 to about 30.

US Patent:

8114272, Feb 14, 2012

Filed:

Sep 26, 2008

Appl. No.:

12/232942

Inventors:

Patrick J. Maher - Kingwood TX, US

Assignee:

ExxonMobil Research & Engineering Company - Annandale NJ

International Classification:

C10G 11/00

US Classification:

208113

Abstract:

A method of processing the waste stream includes introducing the waste stream into the Fluid Catalytic Cracking Unit such that waste stream is processed within the regenerator unit or in CO boiler unit such that the waste stream and the regenerator flue gas are burned within the regenerator unit or the CO boiler unit. The waste stream contains NHand the NHis converted to the NOx and N. The fluid catalytic cracking unit may further include an assembly for converting NOx to N. Flue gas from the CO boiler unit containing NOx and Nis fed to the assembly to NOx to Nwithin the assembly. The assembly for converting NOx to Npreferably includes a selective catalytic reduction unit containing a catalyst, and wherein converting NOx to Nincludes reacting the NOx with the catalyst to produce Nand HO.

US Patent:

20120093705, Apr 19, 2012

Filed:

Dec 22, 2011

Appl. No.:

13/334436

Inventors:

Patrick J. MAHER - Kingwood TX, US

Assignee:

EXXONMOBIL RESEARCH AND ENGINEERING COMPANY - Annandale VA

International Classification:

B01D 53/58
B01D 53/96

US Classification:

423237

Abstract:

A method of processing the waste stream includes introducing the waste stream into the Fluid Catalytic Cracking Unit such that waste stream is processed within the regenerator unit or in CO boiler unit such that the waste stream and the regenerator flue gas are burned within the regenerator unit or the CO boiler unit The waste stream contains NHand the NHis converted to the NOx and N. The fluid catalytic cracking unit may further include an assembly for converting NOx to N. Flue gas from the CO boiler unit containing NOx and Nis fed to the assembly to NOx to Nwithin the assembly. The assembly for converting NOx to Npreferably includes a selective catalytic reduction unit containing a catalyst, and wherein converting NOx to Nincludes reacting the NOx with the catalyst to produce Nand HO.