Robert C. Welch
Engineering at Woodruff Dr, Baton Rouge, LA
License number
Louisiana PE.0013223
Issued Date
Jun 13, 1972
Expiration Date
Mar 31, 2004
Category
Civil Engineer
Type
Chemical Engineer
Address
Address
542 E Woodruff Dr, Baton Rouge, LA 70808
Professional information
Catalytic Stripping For Mercaptan Removal (Ecb-0004)
US Patent:
6736962, May 18, 2004
Filed:
Sep 29, 2000
Appl. No.:
09/676875
Inventors:
Bruce Randall Cook - Stewartsville NJ
Robert Charles Welch - Baton Rouge LA
Richard Harry Ernst - Glen Gardner NJ
Richard Alan Demmin - Highland Park NJ
Robert Charles Welch - Baton Rouge LA
Richard Harry Ernst - Glen Gardner NJ
Richard Alan Demmin - Highland Park NJ
Assignee:
ExxonMobil Research and Engineering Company - Annandale NJ
International Classification:
C10G 4502
US Classification:
208210, 208212
Abstract:
A process for reducing the amount of mercaptan sulfur in a petroleum stream without significantly changing its octane value. The process comprising a three-phase system wherein the petroleum stream to be treated is passed through a fixed bed of catalyst in the presence of a stripping gas. The stripping gas can be either hydrogen containing gas or an method wherein the composition of the catalyst utilized varies according to the stripping gas.
Multi-Stage Hydrodesulfurization Of Cracked Naphtha Streams With Interstage Fractionation
US Patent:
6913688, Jul 5, 2005
Filed:
Oct 18, 2002
Appl. No.:
10/274021
Inventors:
John C. Coker - Baytown TX, US
Garland B. Brignac - Clinton LA, US
Thomas R. Halbert - Baton Rouge LA, US
John G. Matragrano - Baton Rouge LA, US
Brij Gupta - Thornhill, CA
Robert C. Welch - Baton Rouge LA, US
Garland B. Brignac - Clinton LA, US
Thomas R. Halbert - Baton Rouge LA, US
John G. Matragrano - Baton Rouge LA, US
Brij Gupta - Thornhill, CA
Robert C. Welch - Baton Rouge LA, US
Assignee:
ExxonMobil Research and Engineering Company - Annandale NJ
International Classification:
C10G065/00
US Classification:
208210, 208209, 208213, 208216 R, 208 59, 208217
Abstract:
A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically bound sulfur and olefins. The olefinic naphtha stream is selectively hydrodesulfurized in a first sulfur removal stage and resulting product stream, which contains hydrogen sulfide and organosulfur is fractionated at a temperature to produce a light fraction containing less than about 100 wppm organically bound sulfur and a heavy fraction containing greater than about 100 wppm organically bound sulfur. The light fraction is stripped of at least a portion ofits hydrogen sulfide and can be collected or passed to gasoline blending. The heavy fraction is passed to a second sulfur removal stage wherein at least a portion of any remaining organically bound sulfur is removed.
Fluid Catalytic Cracking Process For Converting Hydrocarbon Mixtures
US Patent:
6123832, Sep 26, 2000
Filed:
Jan 14, 1999
Appl. No.:
9/231697
Inventors:
Teh Chung Ho - Bridgewater NJ
Shun Chong Fung - Bridgewater NJ
Gordon Frederick Stuntz - Baton Rouge LA
Robert Charles Welch - Baton Rouge LA
Daniel Paul Leta - Flemington NJ
Shun Chong Fung - Bridgewater NJ
Gordon Frederick Stuntz - Baton Rouge LA
Robert Charles Welch - Baton Rouge LA
Daniel Paul Leta - Flemington NJ
Assignee:
Exxon Research and Engineering Co. - Florham Park NJ
International Classification:
C10G 5506, C10G 1100
US Classification:
208113
Abstract:
The invention relates to Fluid Catalytic Cracking (FCC) for producing liquid fuels and light olefins from liquid hydrocarbon mixtures such as petroleum fractions.
Selective Hydroprocessing And Mercaptan Removal
US Patent:
7244352, Jul 17, 2007
Filed:
Feb 7, 2003
Appl. No.:
10/359860
Inventors:
Thomas R. Halbert - Baton Rouge LA, US
Craig A. McKnight - Sherwood Park, CA
John P. Greeley - Annandale NJ, US
Bruce R. Cook - Stewartsville NJ, US
Garland B. Brignac - Clinton LA, US
Mark A. Greaney - Upper Black Eddy PA, US
Robert C. Welch - Baton Rouge LA, US
Craig A. McKnight - Sherwood Park, CA
John P. Greeley - Annandale NJ, US
Bruce R. Cook - Stewartsville NJ, US
Garland B. Brignac - Clinton LA, US
Mark A. Greaney - Upper Black Eddy PA, US
Robert C. Welch - Baton Rouge LA, US
Assignee:
ExxonMobil Research and Engineering Company - Annandale NJ
International Classification:
C10G 45/00, C10G 19/00
US Classification:
208212, 208203, 208204, 208206
Abstract:
A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.
Inhibitor Enhanced Thermal Upgrading Of Heavy Oils
US Patent:
7537686, May 26, 2009
Filed:
May 12, 2005
Appl. No.:
11/127731
Inventors:
Ramesh Varadaraj - Flemington NJ, US
Christopher P. Eppig - Vienna VA, US
Douglas W. Hissong - Cypress TX, US
Robert C. Welch - Baton Rouge LA, US
Christopher P. Eppig - Vienna VA, US
Douglas W. Hissong - Cypress TX, US
Robert C. Welch - Baton Rouge LA, US
Assignee:
ExxonMobil Research and Engineering Company - Annadale NJ
International Classification:
C10L 1/00, C10G 17/06, C10G 35/06, C10M 171/00, C10C 3/00, C10G 47/00
US Classification:
208107, 208136, 208224, 208 12, 208 22, 208 14
Abstract:
A method for upgrading heavy oils by contacting the heavy oil with an inhibitor additive and then thermally treating the inhibitor additized heavy oil. The invention also relates to the upgraded product from the inhibitor enhanced thermal treatment process.
Crude Oil Pre-Heat Train With Improved Heat Transfer
US Patent:
8349267, Jan 8, 2013
Filed:
Sep 26, 2008
Appl. No.:
12/232946
Inventors:
Ian A Cody - Annandale NJ, US
Amar S. Wanni - Antwerp, BE
Robert C. Welch - Baton Rouge LA, US
James E. Feather - Burke VA, US
Mark A. Greaney - Upper Black Eddy PA, US
Limin Song - West Windsor NJ, US
Jasmina Poturovic - Calgary, CA
Amar S. Wanni - Antwerp, BE
Robert C. Welch - Baton Rouge LA, US
James E. Feather - Burke VA, US
Mark A. Greaney - Upper Black Eddy PA, US
Limin Song - West Windsor NJ, US
Jasmina Poturovic - Calgary, CA
Assignee:
ExxonMobil Research and Engineering Company - Annandale NJ
International Classification:
B01J 8/00
US Classification:
422201, 422310, 208 48 R, 208308, 208309, 165 84, 165 95
Abstract:
Targeted application of anti-fouling mechanisms in a heat exchange system produces higher rates of energy recovery. The anti-fouling mechanisms with high mitigation rates can be deployed at only the hottest portions of a pre-heat train that experience the highest rates of fouling and heat loss. In application, bundles of corrosion resistant smoothed tubes are deployed in the late pre-heat train to significantly reduce the formation of harder deposits. Vibration can be used as an adjunct approach in conjunction with the corrosion resistant, smooth tubes, or deployed alone on existing bundles. The use of high performing, more durable exchangers in select locations justifies the increased cost of these components.
Selective Hydroprocessing And Mercaptan Removal
US Patent:
2003012, Jul 10, 2003
Filed:
Oct 18, 2002
Appl. No.:
10/273834
Inventors:
Thomas Halbert - Baton Rouge LA, US
John Greeley - Annandale NJ, US
Robert Welch - Baton Rouge LA, US
John Greeley - Annandale NJ, US
Robert Welch - Baton Rouge LA, US
International Classification:
C10G045/00, C10G045/02, C10G067/00, C10G067/04
US Classification:
208/212000, 208/095000, 208/096000, 208/189000, 208/058000, 208/097000, 208/209000, 585/818000
Abstract:
A process for the production of naphtha streams from cracked naphthas having sulfur levels which help meet future EPA gasoline sulfur standards (30 ppm range and below).
Process To Manufacture Low Sulfur Fuels
US Patent:
2005002, Feb 3, 2005
Filed:
Jul 9, 2004
Appl. No.:
10/887680
Inventors:
Robert Welch - Baton Rouge LA, US
Gordon Stuntz - Baton Rouge LA, US
Stuart Shih - Baton Rouge LA, US
Gordon Stuntz - Baton Rouge LA, US
Stuart Shih - Baton Rouge LA, US
International Classification:
C10G069/08, C10G059/02
US Classification:
208097000, 208213000, 20821600R, 208217000, 208134000
Abstract:
The instant invention relates to a process for producing high octane, low sulfur naphtha products through skeletal isomerization of feed olefins and hydrotreating.
Low-Sulfur Fuel
US Patent:
2003018, Oct 9, 2003
Filed:
Jan 15, 2003
Appl. No.:
10/342731
Inventors:
Gordon Stuntz - Baton Rouge LA, US
Robert Welch - Baton Rouge LA, US
Thomas Halbert - Baton Rouge LA, US
Robert Welch - Baton Rouge LA, US
Thomas Halbert - Baton Rouge LA, US
International Classification:
C10G045/02, C10L001/00
US Classification:
208/211000, 208/212000, 208/213000, 208/014000, 208/017000
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 165° F. and a heavy fraction boiling above about 165° 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.
Low-Sulfur Fuel
US Patent:
2004022, Nov 11, 2004
Filed:
Jun 10, 2004
Appl. No.:
10/865374
Inventors:
Gordon Stuntz - Baton Rouge LA, US
Robert Welch - Baton Rouge LA, US
Thomas Halbert - Baton Rouge LA, US
Robert Welch - Baton Rouge LA, US
Thomas Halbert - Baton Rouge LA, US
International Classification:
C10G051/02
US Classification:
208/049000
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 165° F. and a heavy fraction boiling above about 165° 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.