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David W Duhon Deceased3843 3Rd St, Port Arthur, TX 77642

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Barbara Ray Duhon 65 Jake R Patton Spence J Broussard 53 Portia L Duhon 79 Ruth R Duhon 78

David Duhon Phones & Addresses

3843 3Rd St, Port Arthur, TX 77642    409-9823994   

Alvin, TX   

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Medicine Doctors

David R. Duhon

Specialties:
Sleep Medicine, Neurology
Work:
Guadalupe Sleep Center
5625 Eiger Rd STE 115, Austin, TX 78735
512-3814555 (phone) 866-5102239 (fax)
Education:
Medical School
Louisiana State University School of Medicine at New Orleans
Graduated: 1986
Procedures:
Sleep and EEG Testing
Conditions:
Attention Deficit Disorder (ADD), Insomnia, Multiple Sclerosis (MS), Obstructive Sleep Apnea, Parkinson's Disease, Restless Leg Syndrome
Languages:
English
Description:
Dr. Duhon graduated from the Louisiana State University School of Medicine at New Orleans in 1986. He works in Austin, TX and specializes in Sleep Medicine and Neurology.

David Duhon resumes & CV records

Resumes

David Duhon Photo 41

David Duhon

Education:
Louisiana State University 1989 - 1992
Bachelors, Bachelor of Science
Skills:
Teaching, Microsoft Office, Microsoft Word, Powerpoint, Microsoft Excel, Public Speaking, Customer Service
David Duhon Photo 42

Districti Director

Work:
U.s Depratment of Labor
Districti Director
David Duhon Photo 43

David Duhon

David Duhon Photo 44

David Duhon

Location:
United States

Publications & IP owners

Us Patents

Recovery Of Ethylene And Propylene From A Methanol To Olefin Reaction System

US Patent:
7208650, Apr 24, 2007
Filed:
Jul 30, 2004
Appl. No.:
10/903669
Inventors:
Cor F. Van Egmond - Pasadena TX, US
David Duhon - Kingwood TX, US
John E. Asplin - Singapore, SG
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C07C 1/20
US Classification:
585809, 585638, 585820, 585639
Abstract:
The present invention provides new highly-efficient separation processes and systems for separating polymerization-grade ethylene and propylene from an initial effluent stream comprising ethane, ethylene, propylene, dimethyl ether, and one or more of propane, acetylene, methyl acetylene, propadiene, methane, hydrogen, carbon monoxide, carbon dioxide and C+ components. In one embodiment, the initial effluent stream is provided from a methanol-to-olefin reaction system. It has been discovered that an efficient separation of these components is realized when DME is partially removed in a first separation step comprising methanol and water washing steps, followed by separation of the remaining components in additional separation steps.

Recovery Of Ethylene And Propylene From A Methanol To Olefin Reaction System

US Patent:
7214846, May 8, 2007
Filed:
Aug 6, 2003
Appl. No.:
10/635410
Inventors:
Cornelis F. Van Egmond - Pasadena TX, US
David Jon Duhon - Kingwood TX, US
John Ernest Asplin - Singapore, SG
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C07C 1/20
US Classification:
585809, 585638, 585820, 585639
Abstract:
The present invention provides new highly-efficient separation processes and systems for separating polymerization-grade ethylene and propylene from an initial effluent stream comprising ethane, ethylene, propylene, dimethyl ether, and one or more of propane, acetylene, methyl acetylene, propadiene, methane, hydrogen, carbon monoxide, carbon dioxide and C+ components. In one embodiment, the initial effluent stream is provided from a methanol-to-olefin reaction system. It has been discovered that an efficient separation of these components is realized when DME is partially removed in a first separation step comprising methanol and water washing steps, followed by separation of the remaining components in additional separation steps.

System And Method For Extending The Range Of Hydrocarbon Feeds In Gas Crackers

US Patent:
7560019, Jul 14, 2009
Filed:
Dec 5, 2006
Appl. No.:
11/633823
Inventors:
James N. McCoy - Houston TX, US
Walter F. Filupeit - Houston TX, US
Barrington M. Hammond - Houston TX, US
David J. Duhon - Kingwood TX, US
Mark A. Rooney - Humble TX, US
Robert A. Strack - Houston TX, US
John R. Messinger - Kingwood TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C10G 55/04
B01J 8/04
US Classification:
208 69, 208106, 208125, 208130, 422189
Abstract:
In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of the at least one transfer line exchanger to quench the process effluent comprising olefins, separating in a separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to the water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for cracking a liquid hydrocarbon feedstock that yield tar is also provided.

Controlling Tar By Quenching Cracked Effluent From A Liquid Fed Gas Cracker

US Patent:
7582201, Sep 1, 2009
Filed:
Dec 5, 2006
Appl. No.:
11/633975
Inventors:
James N. McCoy - Houston TX, US
Barrington M. Hammond - Houston TX, US
David J. Duhon - Kingwood TX, US
Mark A. Rooney - Humble TX, US
Robert D. Strack - Houston TX, US
John R. Messinger - Kingwood TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C10C 1/19
C10G 55/02
F28D 21/00
US Classification:
208 44, 208 69, 208106, 208125, 208130, 422189, 422207
Abstract:
In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of a primary transfer line exchanger to quench the process effluent comprising olefins, separating in a first separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to a water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for carrying out such process is also provided.

System For Extending The Range Of Hydrocarbon Feeds In Gas Crackers

US Patent:
8025773, Sep 27, 2011
Filed:
Jun 5, 2009
Appl. No.:
12/479157
Inventors:
James N. McCoy - Houston TX, US
Walter F. Filupeit - Houston TX, US
Barrington M. Hammond - Houston TX, US
David J. Duhon - Kingwood TX, US
Mark A. Rooney - Humble TX, US
Robert A. D. Strack - Houston TX, US
John R. Messinger - Kingwood TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C10C 1/19
C10G 55/02
US Classification:
196 1452, 196127, 196136, 196137, 196139, 422198, 202 96
Abstract:
In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of the at least one transfer line exchanger to quench the process effluent comprising olefins, separating in a separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to the water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for cracking a liquid hydrocarbon feedstock that yield tar is also provided.

Controlling Tar By Quenching Cracked Effluent From A Liquid Fed Gas Cracker

US Patent:
8025774, Sep 27, 2011
Filed:
Jul 20, 2009
Appl. No.:
12/505840
Inventors:
James N. McCoy - Houston TX, US
Barrington M. Hammond - Houston TX, US
David J. Duhon - Kingwood TX, US
Mark A. Rooney - Humble TX, US
Robert D. Strack - Houston TX, US
John R. Messinger - Kingwood TX, US
Assignee:
ExxonMobil Chemical Patents Inc. - Houston TX
International Classification:
C10G 55/02
C10C 1/18
US Classification:
196 1452, 196127, 196136, 196137, 196140, 422198
Abstract:
In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of a primary transfer line exchanger to quench the process effluent comprising olefins, separating in a first separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to a water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for carrying out such process is also provided.

Integrating A Methanol To Olefin Reaction System With A Steam Cracking System

US Patent:
2005003, Feb 17, 2005
Filed:
Aug 15, 2003
Appl. No.:
10/642074
Inventors:
Cor Van Egmond - Pasadena TX, US
David Duhon - Kingwood TX, US
Jaimes Sher - Houston TX, US
International Classification:
C07C001/00
US Classification:
585324000, 422131000, 422188000
Abstract:
The present invention provides an integrated system for producing ethylene and propylene from an oxygenate to olefin (OTO) reaction system and a steam cracking system. In a preferred embodiment, at least a portion of an effluent stream from a steam cracking furnace is combined with at least a portion of an effluent stream from an OTO reaction system. Preferably the combined effluent stream is processed by one or more quench units, compression units, and/or fractionation columns. By integrating a steam cracking system with an OTO reaction system, equipment count can be reduced at a significant commercial savings. Compressor efficiency per pound of ethylene and propylene can also be advantageously increased over conventional steam cracking systems. Moreover, the amount of pollutants produced per pound of ethylene and propylene produced can be significantly reduced over the amount of pollutants produced per pound of ethylene and propylene produced in a steam cracking system.

Possible Relatives

Cynthia A Duhon  Deb B Duhon  Dana Duhon  Daniel Duhon  Danielle Duhon  Derek J Duhon  Darrin J Duhon  David Last  David W Johnson  David Stamps 

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