Abstract: A combustor liner cap including a cap center body portion and a fuel nozzle portion defined peripherally of the cap center body portion. A plurality of fuel nozzle ports are defined through the fuel nozzle portion and a plurality of air jet holes are defined through the cap center body portion, and each air jet hole is aligned along a radius of the liner cap with a respective fuel nozzle port.

Abstract: A combustor for mixing a flow of compressed air from a compressor and a flow of fuel from a fuel source. The combustor may include a first swirler for mixing the flow of compressed air and the flow of fuel into a first fuel-air flow, a second flow source for providing a second flow downstream of the first swirler, and a second swirler for mixing the first fuel-air flow and the second flow.

Abstract: A method is provided for reducing the nitrogen oxide content of a flue gas produced by the combustion of fuel by introducing a nitrogen oxide removal agent into either the nitrogen oxide contaminated flue gas or the fuel to be combusted. The nitrogen oxide removal agent is the reaction product of a carbon compound in a pyrolysis liquor and a nitrogen compound such as ammonia, ammonium hydroxide or urea. The carbon compound is selected from carboxylic acids, phenols, esters, aldehydes and ketones. The pyrolysis liquor is derived from a feed stock containing cellulose, lignin or starch.