Michael L 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:

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:

8173826, May 8, 2012

Filed:

Jun 17, 2009

Appl. No.:

12/486463

Inventors:

Prakhar Prakash - San Ramon CA, US
Michael Driver - San Francisco CA, US
Zunqing He - San Rafael CA, US

Assignee:

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

International Classification:

C11B 7/00

US Classification:

554206

Abstract:

In some embodiments, the present invention relates to an enrichment process that involves a separation and/or fractionation and/or enrichment of monounsaturated fatty acid/ester molecules from polyunsaturated fatty acid/ester molecules or, correspondingly, monounsaturated molecules from saturated molecules. Such processes are at least partially based on π(pi)-complexation between metal ions and unsaturated bonds of the extractible molecules (fatty acids/esters), wherein a greater degree of unsaturation provides for greater coordinating (bond) strength and corresponding selectivity in the associated π-complexation with metal ions.

US Patent:

20170305817, Oct 26, 2017

Filed:

Jul 6, 2017

Appl. No.:

15/642550

Inventors:

- The Woodlands TX, US
- San Ramon CA, US
Michael S. DRIVER - Oakland CA, US
Hye Kyung TIMKEN - Albany CA, US

International Classification:

C07C 7/11
C07C 7/152
B01D 53/14
B01D 53/14
B01D 53/14
B01D 53/14
B01D 53/14
B01D 53/22
B01D 53/52
B01D 53/62
B01D 53/72
B01D 53/78
C01B 17/16
C07C 7/144
C07C 7/00
C07C 7/156
B01D 53/14
B01D 53/52

Abstract:

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

US Patent:

20160096784, Apr 7, 2016

Filed:

Dec 11, 2015

Appl. No.:

14/966208

Inventors:

- San Ramon CA, US
- The Woodlands TX, US
Michael S. DRIVER - Oakland CA, US
Hye-Kyung TIMKEN - Albany CA, US

International Classification:

C07C 7/11
C07C 7/144
C07C 7/00
B01D 53/14
B01D 53/22

Abstract:

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

US Patent:

20150133711, May 14, 2015

Filed:

Jan 15, 2015

Appl. No.:

14/597415

Inventors:

- The Woodlands TX, US
- San Ramon CA, US
Michael Sean Driver - Oakland CA, US
Hye-Kyung Cho Timken - Albany CA, US

International Classification:

C07C 7/11
C07C 7/00
C07C 7/144
B01D 53/14

US Classification:

585802, 585844

Abstract:

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.

US Patent:

20150030524, Jan 29, 2015

Filed:

Jul 23, 2013

Appl. No.:

13/948861

Inventors:

- The Woodlands TX, US
- San Ramon CA, US
Michael S. Driver - Oakland CA, US
Hye-Kyung Timken - Albany CA, US

International Classification:

B01D 53/14
C01B 17/16
C07C 7/11
B01D 53/62
B01D 53/52
B01D 53/72
C01B 31/20
B01D 53/78

US Classification:

4234371, 423563, 422255, 585844, 585843, 585818

Abstract:

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.