Larry H Swanson

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:

7374736, May 20, 2008

Filed:

Nov 13, 2003

Appl. No.:

10/705820

Inventors:

Roy Payne - Mission Viejo CA, US
Wei Zhou - Foothill Ranch CA, US
Vitali Victor Lissianski - San Juan Capistrano CA, US
Vladimir M. Zamansky - Oceanside CA, US
Larry William Swanson - Laguna Hills 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 flue gas in which a nitrogen reducing agent is introduced together with the overfire air to mixes with the products of primary combustion along with the overfire air. The nitrogen agent reduced NOx as it passes through the temperature regime that is optimum for the NOx reduction as overfire air and flue gas mix. The transition from low to high temperature effectively eliminates ammonia slip. Additionally, the nitrogen agent may be mixed with the overfire air stream in such a manner that it is optimally shielded from early mixing with the products of primary combustion, where a portion of the overfire air reacts initially with any residual carbon monoxide (CO) that would otherwise interfere with the NOx reduction chemistry.

US Patent:

7775791, Aug 17, 2010

Filed:

Feb 25, 2008

Appl. No.:

12/036772

Inventors:

Larry William Swanson - Laguna Hills CA, US
Roy Payne - Mission Viejo CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23C 7/00

US Classification:

431187, 110104 B, 110260, 110261, 110263, 110265

Abstract:

A method for operating a fuel-fired furnace including at least one burner is provided. The method includes channeling a first fluid flow to the at least one burner at a first predetermined velocity, and channeling a second fluid flow to the at least one burner at a second predetermined velocity during a first mode of operation of the at least one burner. The second predetermined velocity is different than the first predetermined velocity.

US Patent:

7776279, Aug 17, 2010

Filed:

May 19, 2008

Appl. No.:

12/123136

Inventors:

Roy Payne - Mission Viejo CA, US
Wei Zhou - Foothill Ranch CA, US
Vitali Victor Lissianski - San Juan Capistrano CA, US
Vladimir M. Zamansky - Oceanside CA, US
Larry William Swanson - Laguna Hills CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 50/00

US Classification:

422168, 422182

Abstract:

A combustion apparatus for combusting including: a boiler defining an enclosed flue gas path having a combustion zone and a burnout zone, wherein flue gas is formed in the combustion zone and the combustion flue gas comprising nitrogen oxides; a fuel injector aligned with and introducing fuel into the combustion zone and a combustion air injector aligned with and introducing air into the combustion zone; an overfire air system adjacent the burnout zone comprising an overfire air port adjacent the burnout zone and through which overfire air flows into the burnout zone, and a nitrogen reagent injector having an outlet aligned with the overfire air system and injecting nitrogen reagent gas or small droplets into said overfire air, wherein said small droplets have an average diameter of no greater than 50 microns.

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:

8038952, Oct 18, 2011

Filed:

Aug 28, 2008

Appl. No.:

12/200026

Inventors:

Larry William Swanson - Laguna Hills CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B01D 50/00
B01D 47/06

US Classification:

422168, 261 781

Abstract:

A flash atomizer comprising a channel substrate configured to generate a vapor and form a two-phase flow of a fluid; and an enhanced surface disposed on the channel substrate and configured to change a temperature and a pressure required to form the vapor, wherein the enhanced surface texture comprises a plurality of active nucleation sites configured to promote heterogeneous bubble nucleation.

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:

8302545, Nov 6, 2012

Filed:

Feb 20, 2009

Appl. No.:

12/389995

Inventors:

Larry William Swanson - Laguna Hills CA, US
Roy Payne - Mission Viejo CA, US
Quang H. Nguyen - Aliso Viejo CA, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F23C 1/00
F23L 17/16
F23L 9/04

US Classification:

110297, 110261, 1101825, 431 10

Abstract:

A combustion system for combusting air and fuel includes a primary combustion zone configured to produce combustion gases from the air and the fuel and an intermediate air zone downstream from the primary combustion zone. The intermediate air zone is configured to inject an intermediate air stream into the combustion gases. The combustion system further includes a burnout zone downstream from the intermediate air zone, wherein the burnout zone is configured to inject an overfire air stream into the combustion gases, and at least one hybrid-boosted air injector within at least one of the intermediate air zone and the burnout zone. The at least one hybrid-boosted air injector is configured to substantially simultaneously inject a boosted air stream and a windbox air stream into the combustion gases.