David K Moyeda

US Patent:

6481998, Nov 19, 2002

Filed:

Jun 7, 1995

Appl. No.:

08/483441

Inventors:

Roy Payne - Mission Viejo CA
Quang Nguyen - Mission Viejo CA
David Moyeda - Mission Viejo CA

Assignee:

GE Energy and Environmental Research Corporation - Irvine CA

International Classification:

F23C 702

US Classification:

431 5, 431 8, 431187

Abstract:

An apparatus and method for high velocity injection of a stream of fluid fuel into a stream of NO containing combustion effluents downstream of a primary combustion zone, without the use of recirculated flue gas or other carrier gas. The apparatus includes a fuel introducing member that has a fuel receiving end for receiving fluid fuel from a fuel source and a fuel injection end for injecting the fluid fuel into the stream of combustion effluents. A fuel passage is in fluid communication with the fuel receiving end and the fuel injection end of the fuel introducing member. A means for increasing the velocity of the fluid fuel, without the need of a carrier gas, is associated with the fuel introducing member.

US Patent:

7374735, May 20, 2008

Filed:

Jun 5, 2003

Appl. No.:

10/454597

Inventors:

Larry William Swanson - Laguna Hills CA, US
Wei Zhou - Foothill Ranch CA, US
David Kelly Moyeda - Laguna Hills CA, US
Roy Payne - Mission Viejo CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 53/56

US Classification:

423235

Abstract:

A method of decreasing the concentration of nitrogen oxides in a combustion gas flowing through a vessel including the steps of: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of the overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with the overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide; and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

US Patent:

7736608, Jun 15, 2010

Filed:

Nov 29, 2007

Appl. No.:

11/998377

Inventors:

Boris Nickolaevich Eiteneer - Irvine CA, US
Antonio Marquez - San Dimas CA, US
David Kelly Moyeda - Laguna Hills CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 53/56
C01B 21/00

US Classification:

4232391, 423235

Abstract:

A method for reducing the emissions from combustion gases produced during a combustion process includes injecting a hydrocarbon-based reducing agent into the combustion gases to form a combustion gas mixture. The combustion gas mixture including oxides of nitrogen, NO, is directed through a selective catalyst reduction (SCR) system including a catalyst bed to remove NOfrom the combustion gas mixture and to produce an exhaust gas. In one embodiment, the exhaust gases are released from the SCR to the atmosphere.

US Patent:

7892499, Feb 22, 2011

Filed:

Jan 16, 2008

Appl. No.:

12/014930

Inventors:

Larry William Swanson - Laguna Hills CA, US
Wei Zhou - Foothill Ranch CA, US
David Kelly Moyeda - Laguna Hills CA, US
Roy Payne - Mission Viejo CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 50/00

US Classification:

422168, 422173

Abstract:

A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

US Patent:

8052950, Nov 8, 2011

Filed:

Feb 18, 2011

Appl. No.:

13/030599

Inventors:

Larry William Swanson - Laguna Hills CA, US
Wei Zhou - Foothill Ranch CA, US
David Kelly Moyeda - Laguna Hills CA, US
Roy Payne - Mission Viejo CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 53/56

US Classification:

4232391, 423235

Abstract:

A method of decreasing a concentration of nitrogen oxides in a combustion gas flowing through a vessel including: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide, and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

US Patent:

8309045, Nov 13, 2012

Filed:

Feb 11, 2011

Appl. No.:

13/026166

Inventors:

Tian Xuan Zhang - Overland Park KS, US
David Michael Chapin - Overland Park KS, US
Robert Warren Taylor - Ponte Vedra Beach FL, US
David Kelly Moyeda - Laguna Hills CA, US
Peter Martin Maly - Lake Forest CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 53/34
B01D 53/74

US Classification:

423210, 422168, 422177

Abstract:

A system includes an emissions control system. The emissions control system includes a chemical injection conduit. The emissions control system also includes a chemical injector coupled to the chemical injection conduit, wherein the chemical injector is configured to output an emissions control chemical into the chemical injection conduit. The emissions control system further includes a wave generator coupled to the chemical injection conduit, wherein the wave generator is configured to output multiple waves that propagate through the chemical injection conduit into a flow path of combustion products to drive improved mixing of the emissions control chemical with the combustion products.

US Patent:

8430665, Apr 30, 2013

Filed:

Feb 25, 2008

Appl. No.:

12/036739

Inventors:

Roy Payne - Mission Viejo CA, US
Larry William Swanson - Laguna Hills CA, US
David Kelly Moyeda - Laguna Hills CA, US
Antonio Marquez - San Dimas CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23D 1/02
F23N 5/18

US Classification:

431 8, 431115, 431 10, 431187, 110345, 110210, 110203, 110302

Abstract:

Combustion systems having reduced nitrogen oxide emissions and methods of using the same are disclosed herein. In one embodiment, a combustion system is provided. The combustion system includes a combustion zone, which includes a burner for converting a fuel, under fuel rich conditions, to a flue gas. An intermediate staged air inlet is downstream from the combustion zone, for supplying intermediate staged air to the flue gas and producing fuel lean conditions. A reburn zone is downstream from the intermediate staged air inlet for receiving the flue gas. A process for using the combustion system and a method of reducing NOflowing into the reburn zone of a combustion system are also described herein.

US Patent:

8501131, Aug 6, 2013

Filed:

Dec 15, 2011

Appl. No.:

13/327121

Inventors:

David Kelly Moyeda - Santa Ana CA, US
Wei Zhou - Santa Ana CA, US
Antonio Marquez - Irvine CA, US
Xu Guang - Santa Ana CA, US
Santosh Nareddy - Irvine CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 53/56
B01D 53/74
B01D 53/79
B05D 7/04
F23D 11/38

US Classification:

423235, 4232391, 422168, 422169, 422170, 422172, 422177, 239 8, 239398

Abstract:

An apparatus to introduce a reagent to reduce nitrogen oxides in flue gas including: nozzles mounted to a passage for the flue gas, wherein the nozzles are mounted downstream of a SNCR system and upstream of a SCR system, wherein the nozzles are mounted on one or more walls of the passage and are configured to inject a pressurized fluid into the flue gas; a source of the pressurized fluid which is in fluid communication with the nozzles such that the pressurized fluid flows to the nozzles; a source of a NOx reducing reagent and a mixing device which mixes the reagent with the pressurized fluid such that the pressurized fluid flowing to the nozzles includes the reagent.