US 7,320,288 B2
Steam-generating combustion system and method for emission control using oxygen enhancement
Ovidiu Marin, Lisle, Ill. (US); Scott Macadam, Chicago, Ill. (US); Erwin Penfornis, Oak Park, Ill. (US); and Fabienne Chatel-Pelage, Chicago, Ill. (US)
Assigned to American Air Liquide, Inc., Fremont, Calif. (US)
Filed on May 31, 2005, as Appl. No. 11/140,868.
Application 11/140868 is a continuation of application No. 10/366114, filed on Feb. 12, 2003, granted, now 6,935,251.
Claims priority of provisional application 60/380808, filed on May 15, 2002.
Claims priority of provisional application 60/357414, filed on Feb. 15, 2002.
Prior Publication US 2005/0233274 A1, Oct. 20, 2005
Int. Cl. F23J 15/00 (2006.01)
U.S. Cl. 110—345  [110/233; 110/341; 110/348] 7 Claims
OG exemplary drawing
 
1. A steam-generating combustion system, comprising:
an oxidant delivery system providing an oxidant stream;
an oxygen enriched gas generation system providing an oxygen enriched gas with 21% to 100% oxygen to the oxidant delivery system;
a fuel delivery system providing a fuel stream with a fuel mass flow rate;
a combustion chamber arranged to receive and combust the fuel stream in the oxidant stream and generate steam, the combustion chamber generating flue gas having a flue gas mass flow rate which is smaller than the mass flow rate of flue gas generated by the combustion chamber when operated with the same fuel mass flow rate and with air as the oxidant stream; and
a flue gas pollutant control system receiving the flue gas from the combustion chamber and reducing the amount of at least one of particulate matter, SOx, NOx, and mercury in the flue gas, wherein the flue gas pollutant control system includes devices having flue gas flow capacities smaller than the flue gas capacity needed to treat a flue gas generated by the combustion chamber when operated with air as the oxidant stream, wherein the oxidant delivery system provides the oxidant stream to the combustion chamber in a plurality of streams having different compositions.