Alan S Feitelberg

US Patent:

6432368, Aug 13, 2002

Filed:

Jun 30, 1994

Appl. No.:

08/269797

Inventors:

Alan S. Feitelberg - Clifton Park NY
Raul Eduardo Ayala - Clifton Park NY
Stephen Lan-Sun Hung - Waterford NY
David Joseph Najewicz - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01J 804

US Classification:

422190, 48128, 48210, 48197 R, 60775, 60780, 60781, 60 3912, 422187, 422188, 422189, 422191, 422198, 422200, 422211, 423650, 423655, 423656

Abstract:

The ammonia content of fuel gas in an IGCC power generation system is reduced through ammonia decomposition, thereby reducing the NO emissions from the plant. The power generation system includes a gasifier, a gas turbine and at least one catalytic reactor arranged between the gasifier and the gas turbine. The catalytic reactor may be either a three stage or two stage device. The three stage reactor includes a first catalyst which promotes water-gas-shift, a second catalyst which promotes CO methanation, and a third catalyst which promotes ammonia decomposition. The two stage reactor includes a first catalyst which promotes water-gas-shift and CO methanation and a second catalyst which promotes ammonia decomposition. The plural catalytic stages may be disposed in a single vessel or successively disposed in individual vessels, and the catalysts may be in a pelletized form or coated on honeycomb structures.

US Patent:

6632257, Oct 14, 2003

Filed:

May 3, 2000

Appl. No.:

09/564312

Inventors:

Alan S. Feitelberg - Niskayuna NY
Vinod Kumar Pareek - Niskayuna NY
Alan Whitehead - Charlton NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

C10L 112

US Classification:

44370, 44457, 44458, 44603

Abstract:

The addition of a magnesium compound to an ash bearing fuel results in a reduction in the formation of deposits in the turbine and extending the interval between turbine washes when burning the ash bearing fuel in a turbine compared to burning the ash bearing fuel in a turbine without the addition of a magnesium compound. The additive is desirably effective with ash bearing fuel having less than 0. 5 ppm vanadium by weight, less than 1 ppm sodium and potassium combined by weight, and greater than about 25 ppm ash by weight or greater than 2 ppm calcium by weight. The additive is blended with the ash bearing fuel to give a mass ratio of magnesium to ash of between about 0. 5 to 1 and about 3 to 1, and desirably about 1 to 1 on a mass basis after mixing.

US Patent:

6735949, May 18, 2004

Filed:

Jun 11, 2002

Appl. No.:

10/166960

Inventors:

Joel Meier Haynes - Niskayuna NY
Alan S. Feitelberg - Niskayuna NY
David Louis Burrus - Cincinnati OH
Narendra Digamber Joshi - Cincinnati OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02C 358

US Classification:

60746, 60750

Abstract:

A gas turbine engine combustor can downstream of a pre-mixer has a pre-mixer flowpath therein and circumferentially spaced apart swirling vanes disposed across the pre-mixer flowpath. A primary fuel injector is positioned for injecting fuel into the pre-mixer flowpath. A combustion chamber surrounded by an annular combustor liner disposed in supply flow communication with the pre-mixer. An annular trapped dual vortex cavity located at an upstream end of the combustor liner is defined between an annular aft wall, an annular forward wall, and a circular radially outer wall formed therebetween. A cavity opening at a radially inner end of the cavity is spaced apart from the radially outer wall. Air injection first holes are disposed through the forward wall and air injection second holes are disposed through the aft wall. Fuel injection holes are disposed through at least one of the forward and aft walls.

US Patent:

6951108, Oct 4, 2005

Filed:

Jan 22, 2004

Appl. No.:

10/762993

Inventors:

David Louis Burrus - Cincinnati OH, US
Narendra Digamber Joshi - Cincinnati OH, US
Joel Meier Haynes - Niskayuna NY, US
Alan S. Feitelberg - Niskayuna NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23R003/04

US Classification:

60746, 60750

Abstract:

A gas turbine engine combustor can downstream of a pre-mixer has a pre-mixer flowpath therein and circumferentially spaced apart swirling vanes disposed across the pre-mixer flowpath. A primary fuel injector is positioned for injecting fuel into the pre-mixer flowpath. A combustion chamber surrounded by an annular combustor liner disposed in supply flow communication with the pre-mixer. An annular trapped dual vortex cavity located at an upstream end of the combustor liner is defined between an annular aft wall, an annular forward wall, and a circular radially outer wall formed therebetween. A cavity opening at a radially inner end of the cavity is spaced apart from the radially outer wall. Air injection first holes are disposed through the forward wall and air injection second holes are disposed through the aft wall. Fuel injection holes are disposed through at least one of the forward and aft walls.

US Patent:

7416799, Aug 26, 2008

Filed:

Dec 23, 2004

Appl. No.:

11/022330

Inventors:

Ching-Jen Tang - Watervliet NY, US
Alan S. Feitelberg - Niskayuna NY, US

Assignee:

Plug Power Inc. - Latham NY

International Classification:

H01M 8/04

US Classification:

429 17, 429 19, 429 34

Abstract:

An oxidizer that is usable with a fuel cell includes a catalyst, an inlet to communicate an oxidant flow, an injection tube to communicate an anode exhaust flow, a mixing tube and a divergent nozzle. The injection tube communicates the anode exhaust flow from the fuel cell into the oxidizer to produce a combined flow in which the anode exhaust flow is oriented in substantially the same direction as the oxidant flow and surrounded by the oxidant flow. The mixing tube is connected to the inlet to receive the combined flow and mix the oxidant flow and the anode exhaust flow mix together to produce a mixed flow. A cross-sectional flow area of the mixing tube is sized to prevent flashback. The divergent nozzle communicates the mixed flow to the catalyst.

US Patent:

20070154359, Jul 5, 2007

Filed:

Dec 29, 2005

Appl. No.:

11/321907

Inventors:

Parshant Dhand - Troy NY, US
Troy Scriven - Waterford NY, US
Richard Graham - Scotia NY, US
David Parry - Clifton Park NY, US
Alan Feitelberg - Niskayuna NY, US

International Classification:

F01N 3/20
H01M 8/06
H01M 8/04

US Classification:

422105000, 429019000, 429025000

Abstract:

A fuel cell system includes a de-sulfurization tank, a reformer, a pressure monitoring device and a fuel cell stack. The de-sulfurization tank includes an agent that is adapted to remove sulfur compounds and is capable of undergoing a conditioning cycle. The tank includes an inlet to receive a first hydrocarbon flow and an outlet to provide a second hydrocarbon flow. The reformer is adapted to convert the second hydrocarbon flow into a reformate flow, which is received by the fuel cell stack. The pressure monitoring device monitors a pressure of the second hydrocarbon flow, a circuit of the fuel cell system is coupled to the pressure monitoring device to determine whether the conditioning of the tank is complete based on the pressure.

US Patent:

20080152969, Jun 26, 2008

Filed:

Dec 22, 2006

Appl. No.:

11/645154

Inventors:

Vishnu L. Poonamallee - Tamilnadu, IN
Zhi Zhou - Selkirk NY, US
Parshant Dhand - Lansdale PA, US
Alan S. Feitelberg - Niskayuna NY, US

International Classification:

H01M 8/04

US Classification:

429 17, 429 34

Abstract:

A fuel cell system includes a fuel cell stack, and a reactor to oxidize excess fuel exhausted from the fuel cell stack. A sensor associated with the reactor provides an output indication, and a controller detects a fuel-rich condition of the reactor based on the output indication from the sensor.

US Patent:

61926892, Feb 27, 2001

Filed:

Mar 18, 1998

Appl. No.:

9/040978

Inventors:

Alan S. Feitelberg - Niskayuna NY
Kevin Michael Elward - Simpsonville SC
Robert Lee Hillis - Oneonta NY
Milton Bradford Hilt - Sloansville NY
John Francis Love - Slingerlands NY
Roointon Erach Pavri - Schenectady NY
Richard Benjamin Schiefer - Niskayuna NY
Richard Arthur Symonds - Simpsonville SC

Assignee:

General Electric Company - Schnectady NY

International Classification:

F02C 300

US Classification:

60752

Abstract:

An optimized combustor cooperating with a compressor in driving a gas turbine comprises a cylindrical outer combustor wall having an upstream fuel entry region and a downstream turbine entry region. An array of mixing holes are disposed about the periphery of the outer combustor wall adjacent to the fuel entry region so as to lower No. sub. x production therein. An array of dilution holes are medially disposed within the outer combustor wall to provide an entry for dilution air to the combustor.