Kevin H Nguyen

US Patent:

6796332, Sep 28, 2004

Filed:

Apr 4, 2003

Appl. No.:

10/407258

Inventors:

Kevin H. Nguyen - Missouri City TX
W. Spencer Wheat - Missouri City TX
Vesna R. Mirkovic - Pearland TX

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

H01M 804

US Classification:

137883, 429 25, 429 34, 137 14, 13756518

Abstract:

A method and apparatus for providing a balanced fluid supply through multiple feeds are disclosed. The method comprises supplying the fluid through a plurality of feeds from a common fluid accumulator; determining the fluid pressure in a common fluid accumulator; and controlling the fluid pressure in the common fluid accumulator responsive to the fluid pressure sensed therein to maintain the fluid pressure within a predetermined range. The balanced fluid supply comprises a common fluid accumulator; a plurality of feeds from the common fluid accumulator; and a control system capable of controlling the pressure of the fluid supplied from the common fluid accumulator to the feeds responsive to a determined pressure of fluid in the common fluid accumulator.

US Patent:

6966327, Nov 22, 2005

Filed:

Sep 21, 2004

Appl. No.:

10/946154

Inventors:

Kevin H. Nguyen - Missouri City TX, US
W. Spencer Wheat - Missouri City TX, US
Vesna R. Mirkovic - Pearland TX, US

Assignee:

Texaco Development Corporation - San Ramon CA

International Classification:

G05D016/20
H01M008/04

US Classification:

137 14, 1374875, 137883, 429 25, 429 34

Abstract:

A method and apparatus for providing a balanced fluid supply through multiple feeds are disclosed. The method comprises supplying the fluid through a plurality of feeds from a common fluid accumulator; determining the fluid pressure in a common fluid accumulator; and controlling the fluid pressure in the common fluid accumulator responsive to the fluid pressure sensed therein to maintain the fluid pressure within a predetermined range. The balanced fluid supply comprises a common fluid accumulator; a plurality of feeds from the common fluid accumulator; and a control system capable of controlling the pressure of the fluid supplied from the common fluid accumulator to the feeds responsive to a determined pressure of fluid in the common fluid accumulator.

US Patent:

7081144, Jul 25, 2006

Filed:

Apr 4, 2003

Appl. No.:

10/408001

Inventors:

W. Spencer Wheat - Missouri City TX, US
Vesna R. Mirkovic - Pearland TX, US
Kevin H. Nguyen - Missouri City TX, US
Curtis L. Krause - Houston TX, US
James F. Stevens - Katy TX, US
Daniel G. Casey - Kingwood TX, US

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

C01B 3/36

US Classification:

48197R, 481279

Abstract:

A method for start-up and shut down of a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst is disclosed. Also disclosed are a computer programmed to start-up or shut down a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst or a program storage medium encoded with instruction that, when executed by a computer, start-up or shut down a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst.

US Patent:

7101175, Sep 5, 2006

Filed:

Apr 4, 2003

Appl. No.:

10/407290

Inventors:

Vijay Anant Deshpande - Houston TX, US
Curtis L. Krause - Houston TX, US
Paul Francis Martin - Toronto, CA
Kevin Hoa Nguyen - Missouri City TX, US
James F. Stevens - Katy TX, US
William Spencer Wheat - Missouri City TX, US

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

F24H 7/02

US Classification:

432 29, 432 30, 429 20, 422198

Abstract:

A combustor for oxidizing a combustion fuel and pre-heating one or more reactants for fuel reforming. The combustor includes an elongated housing having an inlet for receiving a combustion fuel and an outlet for exhausting combustion products. The elongated housing further includes a cylindrical side wall, a bottom wall, and a top wall. Inert particles are disposed within the housing adjacent the inlet. A combustion catalyst bed is disposed within the housing above the inert particles that is a mixture of inert particles and combustion catalyst. The inert particles and the combustion catalyst preferably have a volumetric ratio of inert particles to catalyst between about 2:1 and about 4:1. The combustor has at least one heat exchanger within the combustion catalyst bed for heating a reformer reactant and generating steam. Preferably, the combustor includes at least two heat exchangers within the combustion catalyst bed, the heat exchanging elements have different surface areas. The combustor can include at least one sensor for measuring temperature within the combustor, and preferably the reactor includes two or more sensors for measuring temperature at two or more locations within the combustion catalyst bed.

US Patent:

7235217, Jun 26, 2007

Filed:

Apr 4, 2003

Appl. No.:

10/408080

Inventors:

Kevin Hoa Nguyen - Missouri City TX, US

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

B01J 19/00

US Classification:

422198, 48 94, 429 17, 429 19, 429 20, 429 26, 431 8, 60303, 165173

Abstract:

Apparatus and method for rapidly heating one or more reactants for use in a fuel reformer. The apparatus includes a combustion section having an outer wall enclosing a combustion chamber and a catalyst disposed within the combustion chamber. A heat recovery section is in fluid communication with the combustion section and has an outer wall defining a heat recovery chamber. At least one heat exchanging element is located within the heat recovery chamber having an inlet for receiving a fuel reforming reactant and an outlet for directing a heated reactant out of the heat recovery section. The combustion section is elevated relative to the heat recovery section such that heated combustion gases are displaced down into the heat recovery section. The housing has an internal diameter of less than about 10 inches, or alternatively, has a length and a diameter in a ratio of between about 7:1 and about 4:1.

US Patent:

7578669, Aug 25, 2009

Filed:

Dec 14, 2006

Appl. No.:

11/610983

Inventors:

Yunquan Liu - Katy TX, US
Curtis L. Krause - Houston TX, US
Kevin H. Nguyen - Missouri City TX, US

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

C10L 3/00
F23D 3/40

US Classification:

431 7, 481273, 481275, 481277, 165154, 165156, 165163, 165169, 1223671

Abstract:

The present invention discloses a hybrid combustor, such as an anode tailgas oxidizer (ATO), for fuel processing applications which combines both flame and catalytic type burners. The hybrid combustor of the present invention combines the advantages of both flame and catalytic type burners. The flame burner component of the hybrid combustor is used during start-up for the preheating of the catalytic burner component. As soon as the catalytic burner bed is preheated or lit off, the flame burner will be shut off. Optionally, the hybrid combustor may also include an integrated heat recovery unit located downstream of the catalytic burner for steam generation and for the preheating of the feed for a reformer, such as an autothermal reformer.

US Patent:

7857875, Dec 28, 2010

Filed:

May 11, 2006

Appl. No.:

11/432068

Inventors:

W. Spencer Wheat - Missouri City TX, US
Vesna R. Mirkovic - Pearland TX, US
Kevin H. Nguyen - Missouri City TX, US
Curtis L. Krause - Houston TX, US
James F. Stevens - Katy TX, US
Daniel G. Casey - Kingwood TX, US

Assignee:

Texaco Inc. - San Ramon CA

International Classification:

C01B 3/36
C10J 3/46
C10J 3/54
H01M 8/06
H01M 8/04
F23N 5/20
F23N 5/22
F23N 5/00
F23D 11/38

US Classification:

48197R, 429420, 429423, 429425, 429429, 431 6, 431 29, 431121

Abstract:

A method for start-up and shut down of a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst is disclosed. Also disclosed are a computer programmed to start-up or shut down a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst or a program storage medium encoded with instruction that, when executed by a computer, start-up or shut down a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst.

US Patent:

7964176, Jun 21, 2011

Filed:

Mar 29, 2005

Appl. No.:

11/092555

Inventors:

Curtis L. Krause - Houston TX, US
Kevin H. Nguyen - Missouri City TX, US
Bhaskar Balasubramanian - Houston TX, US
Yunquan Liu - Katy TX, US
Jeroen Valensa - Muskego WI, US
Michael J. Reinke - Franklin WI, US
Mark G. Voss - Franksville WI, US
Todd M. Bandhauer - Racine WI, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA
Modine Manufacturing Company - Racine WI

International Classification:

F28F 1/00
C01B 3/26

US Classification:

423652, 165181, 165177, 481981, 481279

Abstract:

Relates to a process and apparatus that improves the hydrogen production efficiency for small scale hydrogen production. According to one aspect, the process provides heat exchangers that are thermally integrated with the reaction steps such that heat generated by exothermic reactions, combustion and water gas shift, are arranged closely to the endothermic reaction, steam reformation, and heat sinks, cool natural gas, water and air, to minimize heat loss and maximize heat recovery. Effectively, this thermally integrated process eliminates excess piping throughout, reducing initial capital cost.

Address:

7619 Tussendo Dr, Houston, TX 77083

VIN:

4T1BE46K47U666884

Make:

TOYOTA

Model:

CAMRY

Year:

2007

Address:

8810 Shl Crk Dr, Houston, TX 77064

VIN:

1N6AD06U27C413448

Make:

NISSAN

Model:

FRONTIER

Year:

2007

Address:

5847 Longforest Dr, Houston, TX 77088

VIN:

1N6BA07A07N224934

Make:

NISSAN

Model:

TITAN

Year:

2007

Address:

19034 Waterford Cv, Houston, TX 77094

VIN:

2HGFG12867H529331

Make:

HONDA

Model:

CIVIC

Year:

2007