A burner for burning a hydrogen-containing fuel is equipped with a burner unit which comprises a fuel feed and a feed for a primary oxidant (oxygen) and which is accommodated in a feed for a secondary oxidant (air). A swirl device whose relative position with respect to the burner unit can be altered is provided in the feed for the secondary oxidant. The relative position of the burner unit and the swirl device may be controlled according to a composition of the fuel, in particular according to the water content thereof and the ratio of primary and secondary oxidant. The burner allows flexible adaptation of the burning to fuels of different composition, even during ongoing operation.

A fuel injection device, for a gas turbine, which enhances uniform distribution in concentration of fuel gas and water vapor in a combustion chamber with simple structure and at low cost to effectively reduce NOx, is provided. The fuel injection device with a fuel nozzle to mix fuel gas and water vapor and inject the fuel gas and water vapor into a combustion chamber, includes: a nozzle housing having a mixing chamber thereinside; a first introduction passage to introduce the fuel gas into the mixing chamber from outside of the nozzle housing; and a second introduction passage to introduce the water vapor into the mixing chamber from an outside of the nozzle housing; and a plurality of reverse passages communicating with a downstream end of the mixing chamber and configured to allow for a plurality of reverses of flow of mixed gas from the mixing chamber.

A method for oxidizing a waste stream having hydrogen therein includes flowing the waste stream with hydrogen into an oxidant stream for mixing the streams in a proportion for providing a mixture below lower flammability limits (LFL), including the LFL of hydrogen; and introducing the mixed streams into a ceramic matrix bed of a flameless thermal oxidizer maintained at a temperature above auto-ignition temperature of the mixture. A related apparatus is also provided.

A gas turbine combustor includes a casing coupled to a main housing; a liner having formed inside a combustion chamber that extends in an axial direction, an upstream portion including a head portion of the liner accommodated in the casing, and a downstream portion accommodated in the main housing; a main burner provided at the head portion of the liner; a supplemental burner including an injection port located in an air passage formed between the liner and the casing, the supplemental burner configured to inject an air-fuel mixture in which supplemental burning fuel containing hydrogen and the compressed air taken into the supplemental burner through the space formed between the liner and the casing are mixed; and a duct including an entrance connected to the injection port of the supplemental burner and an exit which opens in the combustion chamber, the duct extends in parallel with the axial direction.

A burner for the firing of ceramic articles which can be installed in an industrial kiln can include a firing chamber; the burner further including a mixing body; a spark device; a flame detection device; a first tubular discharge element configured to be flown through by a fluid flowing out of the mixing body and provided with a first end and with a second end opposite the first end; wherein the mixing body comprises both a partitioning system of the fuel, configured to divide the fuel in a plurality of first portions, and an oxidizer partitioning system, configured to divide the oxidizer into a plurality of second portions, which are conveyed so as be mixed in at least two different stages with the first portions.

A regulation method of a premixed gas burner substantially and/or essentially fed by hydrogen H.sub.2 as well as a device to carry out such method is described.

A fuel supply system for a gas turbine engine comprises a housing having a housing interior chamber and a fuel swirler disposed inside the housing interior chamber. The fuel swirler has an upstream end and downstream end relative to a fuel flow direction along a fuel nozzle longitudinal axis. The fuel swirler has a first axial fuel passage along the longitudinal axis in fluid communication with a first fuel supply and terminating at a first fuel outlet at the downstream end, a second axial fuel passage along the longitudinal axis in fluid communication with a second fuel supply and terminating at a second fuel outlet at the downstream end, and a plurality of compressed air outlets at the downstream end. The first fuel outlet is positioned on an outermost surface of the fuel swirler and leads directly to a mixing site downstream of the fuel swirler.

A flameless thermal oxidizer apparatus for a gaseous stream containing hydrogen includes a vessel containing a ceramic matrix bed; and a dip tube extending into the ceramic matrix bed, the dip tube including a first flow path for a first stream having hydrogen therein, and a second flow path for a second stream having an oxidant therein to be mixed with the first stream for introduction into the ceramic matrix bed. A related method is also provided.

A method for the combustion of ammonia, wherein a first combustion chamber (2) receives ammonia (4) and hydrogen (5) in controlled proportions, and an oxygen-containing gas. Combustion of the ammonia and hydrogen produces NH.sub.2.sup. ions among other combustion products (22). A second combustion chamber (3) receives the combustion products (22) from the first combustion chamber and receives further ammonia (4) and further hydrogen (5) in controlled proportions, wherein combustion produces nitrogen oxides among other combustion products (24). A third combustion chamber (14) receives the nitrogen oxides along with further ammonia and further hydrogen in further controlled proportions along with further oxygen-containing gas, such that the nitrogen oxides are combusted into nitrogen and water.

An adjustable injector system for adjusting a radial distribution of a mixed fuel includes an adjustable injector configured to receive first and second non-carbon fuels and configured to adjust the radial distribution of the mixed fuel with a movable part, wherein the mixed fuel is obtained from mixing the first non-carbon fuel with the second non-carbon fuel; a sensor configured to determine an instability of a flame generated by the mixed fuel; and a controller electrically connected to the adjustable injector and the sensor, and configured to change a configuration of the adjustable injector, based on an input signal from the sensor, to control the radial distribution of the mixed fuel.