Eric L Streicher

US Patent:

6544029, Apr 8, 2003

Filed:

Sep 19, 2001

Appl. No.:

09/955719

Inventors:

Ovidiu Marin - Lisle IL
Eric Streicher - Downers Grove IL
Olivier Charon - Chicago IL
Remi P. Tsiava - Grigny, FR

Assignee:

LAir Liquide - Societe Anonyme A Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude - Paris
American Air Liqude - Fremont CA

International Classification:

F23C 500

US Classification:

431165, 431 10, 431159, 431179, 431278, 432196

Abstract:

Methods and apparatus for combusting a fuel with an oxidant are described, the apparatus comprising a ceramic burner block, the burner block having a back face and a front face. The burner block has at least one oxidant cavity in an upper portion of the burner block, and at least one fuel cavity in a lower portion of the burner block, each cavity extending from the back face to the front face. The at least one oxidant cavity has positioned therein a fuel supply conduit, the fuel supply conduit having a fuel supply conduit exit positioned a sufficient distance from the front face to allow combustion of at least a portion of fuel exiting the fuel supply conduit exit with at least some of the oxidant traversing the oxidant cavity, and the least one fuel cavity having connected thereto, near the back face, an oxidant conduit, thereby allowing mixing of a minor portion of the oxidant with the fuel.

US Patent:

6659762, Dec 9, 2003

Filed:

Sep 17, 2001

Appl. No.:

09/956370

Inventors:

Harley A. Borders - Lombard IL
Mahendra L. Joshi - Darien IL
Eric Streicher - Downers Grove IL
Thierry Legiret - Toussus le Noble, FR

Assignee:

LAir Liquide - Societe Anonyme a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude - Paris
American Air Liquide - Fremont CA

International Classification:

F23M 302

US Classification:

431 8, 431 10, 431351

Abstract:

An oxy-fuel burner generates a long, luminous, stable and adjustable flame temperature profile flame by incorporating separate, fuel and oxygen jets oriented in a unique geometry. In one preferred embodiment, the fuel is injected horizontally at medium injection velocity (50-200 m/s) while primary oxygen is injected underneath the fuel jet at supersonic velocity (300-500 m/s). The supersonic velocity oxygen jet (20 to 50% required for stoichiometric combustion) entrains fuel and furnaces gases in its core for the primary flame development over the furnace load. The subsequent mixing of the fuel, primary oxygen and entrained furnace gases establish a low NOx, stable, long and luminous primary flame. The secondary oxidant, preferably air or low purity oxygen (50 to 80% of stoichiometric needs), is injected above the flame using one or more oxygen jets to create an oxy-fuel flame with adjustable flame characteristics. The secondary oxidant completes unfinished combustion of flame gases containing CO, H , CH , soot and HC.

US Patent:

6685464, Feb 3, 2004

Filed:

Mar 28, 2001

Appl. No.:

09/819197

Inventors:

Ovidiu Marin - Lisle IL
Benjamin Bugeat - Oak Park IL
Eric Streicher - Downers Grove IL
Pietro Di Zanno - Rueil Malmaison, FR

Assignee:

LAir Liquide - Societe Anonyme à Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude - Paris
American Air Liquide - Fremont CA

International Classification:

F23C 500

US Classification:

431 10, 431 8, 431 9

Abstract:

Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remaining portion of air entering the combustion chamber at a plurality of locations downstream of the burners. The methods comprise injecting oxygen-enriched gas through a plurality of lances into the combustion chamber at a plurality of downstream locations, the oxygen-enriched gas injected at a velocity ranging from subsonic to supersonic, and the oxygen-enriched gas being present in an amount sufficient to provide an oxygen concentration of no more than 2% on a volume basis greater than when air is used alone as oxidant.

US Patent:

7014458, Mar 21, 2006

Filed:

Dec 8, 2003

Appl. No.:

10/730720

Inventors:

Ovidiu Marin - Lisle IL, US
Benjamin Bugeat - Oak Park IL, US
Eric Streicher - Downers Grove IL, US
Pietro Di Zanno - Malmaison, FR

Assignee:

American Air Liquide, Inc. - Fremont CA
L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude - Paris

International Classification:

F23C 5/00

US Classification:

431 10, 431 8, 431 9, 431187, 431173

Abstract:

Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remaining portion of air entering the combustion chamber at a plurality of locations downstream of the burners. The methods comprise injecting oxygen-enriched gas through a plurality of lances into the combustion chamber at a plurality of downstream locations, the oxygen-enriched gas injected at a velocity ranging from subsonic to supersonic, and the oxygen-enriched gas being present in an amount sufficient to provide an oxygen concentration of no more than 2% on a volume basis greater than when air is used alone as oxidant.