Michael Gary Driver

US Patent:

6339182, Jan 15, 2002

Filed:

Dec 12, 2000

Appl. No.:

09/735176

Inventors:

Curtis L. Munson - Oakland CA
Laura C. Boudreau - Lafayette CA
Michael S. Driver - San Francisco CA
William L. Schinski - San Rafael CA

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C07C 700

US Classification:

585809, 585843, 585845, 585849, 585850, 585848, 208219, 208223

Abstract:

Methods for separating olefins from non-olefins, such as parafins, including cycloparaffins, oxygenates and aromatics, are provided. The methods use metal salts to complex olefins, allowing the non-olefins to be separated by a variety of methods, including decantation and distillation. The metal salts are dissolved in ionic liquids, which tend to have virtually no vapor pressure, and which poorly solubilize the non-olefins. Accordingly, the non-olefins phase separate well, and can be distilled without carrying over any of the ionic liquid into the distillate. Preferred salts are Group IB salts, more preferably silver salts. A preferred silver salt is silver tetrafluoroborate. Preferred ionic liquids are those which form stable solutions or dispersions of the metal salts, and which do not dissolve the non-olefins. Further, if the olefins are subject to isomerization, the ionic liquid is preferably relatively non-acidic. The methods involve forming a solution of a suitable olefin-complexing salt in an appropriate ionic liquid.

US Patent:

6380420, Apr 30, 2002

Filed:

Sep 8, 2000

Appl. No.:

09/657859

Inventors:

William L. Schinski - San Rafael CA
Michael S. Driver - San Francisco CA

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C07C20948

US Classification:

558308, 558357, 558457, 558462, 564490, 564491, 564492, 564493

Abstract:

A process for preparing fatty amines by the cross-metathesis of normal alpha olefins and acrylonitrile to form an intermediate fatty acid nitrile which is hydrogenated to the corresponding fatty amine.

US Patent:

6605206, Aug 12, 2003

Filed:

Feb 8, 2002

Appl. No.:

10/071281

Inventors:

David R. Johnson - Petaluma CA
Christopher A. Simmons - El Cerrito CA
Donald H. Mohr - Orinda CA
Stephen J. Miller - San Francisco CA
Stephen K. Lee - Oakland CA
William L. Schinski - San Rafael CA
Michael S. Driver - San Francisco CA

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C10G 6717

US Classification:

208 80, 208 78, 208950, 585304, 585327

Abstract:

A process for increasing the yield of C plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C plus hydrocarbon product from the hydrofinishing zone.

US Patent:

6623659, Sep 23, 2003

Filed:

Dec 3, 2001

Appl. No.:

09/998138

Inventors:

Curtis L. Munson - Oakland CA
Laura C. Boudreau - Lafayette CA
Michael S. Driver - San Francisco CA
William L. Schinski - San Rafael CA

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C09K 300

US Classification:

252184, 585856, 585857

Abstract:

Methods for separating olefins from non-olefins, such as paraffins, including cycloparaffins, oxygenates and aromatics, are provided. The methods use metal salts to complex olefins, allowing the non-olefins to be separated by a variety of methods, including decantation and distillation. The metal salts are dissolved in ionic liquids, which tend to have virtually no vapor pressure, and which poorly solubilize the non-olefins. Accordingly, the non-olefins phase separate well, and can be distilled without carrying over any of the ionic liquid into the distillate. Preferred salts are Group IB salts, more preferably silver salts. A preferred silver salt is silver tetrafluoroborate. Preferred ionic liquids are those which form stable solutions or dispersions of the metal salts, and which do not dissolve the non-olefins. Further, if the olefins are subject to isomerization, the ionic liquid is preferably relatively non-acidic. The methods involve forming a solution of a suitable olefin-complexing salt in an appropriate ionic liquid.

US Patent:

6703535, Mar 9, 2004

Filed:

Apr 18, 2002

Appl. No.:

10/125879

Inventors:

David R. Johnson - Petaluma CA
Christopher A. Simmons - El Cerrito CA
Donald H. Mohr - Orinda CA
Stephen J. Miller - San Francisco CA
Stephen K. Lee - Oakland CA
William L. Schinski - San Rafael CA
Michael S. Driver - San Francisco CA
William J. Cannella - Hercules CA

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C07C 204

US Classification:

585303, 585302, 585304, 585329, 585330, 208950

Abstract:

A process for upgrading a Fischer-Tropsch feedstock which comprises (a) recovering from a Fischer-Tropsch reactor a Fischer-Tropsch wax fraction and a Fischer-Tropsch condensate fraction, wherein the Fischer-Tropsch condensate fraction contains alcohols boiling below about 370Â C. ; (b) contacting the Fischer-Tropsch condensate fraction with a dehydration catalyst in a dehydration zone under dehydration conditions pre-selected to convert at least some of the alcohols present in said fraction into olefins and recovering a first intermediate effluent from said dehydration zone; (c) pyrolyzing the paraffins in the Fischer-Tropsch wax fraction in a thermal cracking zone under thermal cracking conditions pre-selected to crack the Fischer-Tropsch wax molecules to form olefins and collecting a second intermediate effluent from the thermal cracking zone; (d) passing the first and second intermediate effluents recovered from steps (b) and (c) to an oligomerization zone containing an oligomerization catalyst under oligomerization conditions to form an oligomerization mixture having a higher molecular weight than either of said first and second intermediate effluent; (e) hydrofinishing the oligomerization mixture in a hydrofinishing zone; and (f) recovering from the hydrofinishing zone a C plus hydrocarbon product, most preferably a lubricating base oil.

US Patent:

7531707, May 12, 2009

Filed:

Dec 13, 2006

Appl. No.:

11/610006

Inventors:

Thomas V. Harris - Benicia CA, US
Michael Driver - San Francisco CA, US
Saleh Elomari - Fairfield CA, US
Hye-Kyung C. Timken - Albany CA, US

Assignee:

Chevron U.S.A., Inc - San Ramon CA

International Classification:

C07C 2/60
C07C 2/62

US Classification:

585906, 585725, 585727, 585728, 585724

Abstract:

A process for the production of a high quality gasoline blending components from refinery process streams by the alkylation of light isoparaffins with olefins using an ionic liquid catalyst is disclosed. The alkylation process comprises contacting a hydrocarbon mixture comprising at least one olefin having from 2 to 6 carbon atoms and at least one isoparaffin having from 3 to 6 carbon atoms under alkylation conditions, said catalyst comprising a mixture of at least one acidic ionic liquid and at least one alkyl halide. The alkylhalide by reacting to at least a portion of the olefin with a hydrogen halide.

US Patent:

7538256, May 26, 2009

Filed:

Dec 12, 2006

Appl. No.:

11/609739

Inventors:

Michael S. Driver - San Francisco CA, US
Gunther Dieckmann - Walnut Creek CA, US

Assignee:

Chevron U.S.A., Inc. - San Ramon CA

International Classification:

C07C 2/60
C07C 2/62

US Classification:

585712, 585725, 585727, 585728, 585724

Abstract:

An alkylation process comprising contacting a first hydrocarbon feed comprising at least one olefin having from 2 to 6 carbon atoms and a second hydrocarbon feed comprising at least one isoparaffin having from 3 to 6 carbon atoms with a halide-based acidic ionic liquid catalyst under alkylation conditions to produce an alkylate containing an organic halide and contacting at least a portion of the alkylate with a hydrotreating catalyst in the presence of hydrogen under hydrotreating conditions to reduce the concentration of the organic halide is disclosed.

US Patent:

7732651, Jun 8, 2010

Filed:

Jun 1, 2006

Appl. No.:

11/445561

Inventors:

Michael Driver - San Francisco CA, US
Curt B. Campbell - Hercules CA, US
Thomas V. Harris - Benicia CA, US

Assignee:

Chevron Oronite Company, LLC - San Ramon CA

International Classification:

C07C 2/70
C07C 2/26

US Classification:

585323, 585455, 585456, 585521, 585511

Abstract:

A process for alkylating an aromatic compound containing no hydroxyl groups comprising reacting at least one non-hydroxyl containing aromatic compound with at least one olefinic oligomer in the presence of an acidic ionic liquid catalyst, wherein the olefinic oligomer has a carbon range of from about Cto about Cand is synthesized by oligomerizing at least one monoolefin monomer in the presence of an acidic ionic liquid catalyst.