The combustion device includes: a combustion chamber in which fuel is combusted using combustion air; and a reducing agent injector that injects a reducing agent toward flames in the combustion chamber.

A hydrogen content fuel can be stably ignited using a gaseous fuel that does not contain hydrogen and dispersibility of the hydrogen content fuel is enhanced.

A gas turbine combustor including a burner including: a startup fuel pipe in which a startup fuel circulates; a first main fuel pipe in which a main fuel circulates, a second main fuel pipe in which the main fuel circulates; a fuel mixer to which the startup fuel pipe and the first main fuel pipe are connected; an inner fuel nozzle to which the fuel mixer is connected; a plurality of outer fuel nozzles to which the second main fuel pipe is connected; a startup fuel control valve provided in the startup fuel pipe; a first fuel control valve provided in the first main fuel pipe; and a second fuel control valve provided in the second main fuel pipe.

An emissions reduction system for a combined cycle power plant having a gas turbine engine and a heat recovery steam generator (HRSG) can comprise a duct defining a flow space configured to receive exhaust gas from the gas turbine and convey the exhaust gas into the HRSG, and a louver system coupled to the duct that can comprise a plurality of emission medium panels extending across the flow space, the emission medium panels configured to be moved between a first position where adjacent filter medium panels extend contiguously across the flow space of the duct and a second position where adjacent filter medium panels include spaces therebetween to provide an unobstructed flow path and an actuator to move the plurality of panels between the first position and the second position.

Apparatuses, systems, and methods are disclosed for emissions control. An emissions monitor module measures at least one pollutant level for an exhaust gas flow produced by a combustion source and treated by a pollution control device. The at least one pollutant level may be controllable based on at least one combustion source operating parameter and at least one pollution control device operating parameter. A control module controls the at least one combustion source operating parameter and the at least one pollution control device operating parameter based on the at least one measured pollutant level.

A combustion device burns fuel ammonia in a combustor using combustion air, and includes a catalyst reduction unit which is configured to reduce nitrogen oxides in a combustion exhaust gas supplied from the combustor, in which at least a part of the fuel ammonia is supplied to the catalyst reduction unit as a reducing agent for the nitrogen oxides in the combustion exhaust gas.

A method of controlling a gas turbine engine capable of operating in at least a high output power range, a medium-high output power range, a medium-low output power range and a low output power range. The method includes during the medium-high output power range bleeding a gas from a downstream part of the compressor to an upstream part of the compressor so that a first predetermined temperature of the combustor is maintained, during the medium-low output power range bleeding a gas from a downstream part of the compressor to an upstream part of the compressor and bleeding a gas from the downstream part of the compressor to the exhaust so that a second predetermined temperature of the combustor is maintained.

A fuel supply device includes a first supply pipe, a first on-off valve, a second on-off valve, a second supply pipe, a connection pipe, a third on-off valve, and a leak check measuring device, and performs a leak check of the first supply pipe.

A system includes a control system configured to control one or more parameters of an exhaust gas recirculation (EGR) gas turbine system to control a portion of electrical power for export from a generator driven by the turbine to an electrical grid. The control system includes a closed-loop controller configured to control parameters of the EGR gas turbine system and an open-loop controller configured to temporarily control the parameters of the EGR gas turbine system to increase the portion of the electrical power exported to the electrical grid to provide a Primary Frequency Response (PFR) in response to a transient event associated with the electrical power. The open-loop controller is configured to provide control signals to increase a concentration of an oxidant in a combustor to provide the PFR in response to the transient event when the EGR gas turbine system is operating in an emissions compliant mode.

To provide a gas turbine combustor that can suppress a generation amount of NOx and maintain a flame holding property, while suppressing burn damage around a pilot nozzle including the pilot nozzle. A gas turbine combustor includes a pilot nozzle that can inject fuel F and cooling air A for cooling a nozzle tip, a flow regulating valve that can adjust a flow rate of cooling air to be supplied to the pilot nozzle, a detection sensor that detects a combustion state of fuel, and a control device that controls the flow regulating valve based on a detection result of the detection sensor.

The upstream-side wall portion 54 includes, in the circumferential direction thereof, a first region 31 where air inlets 30 are formed at a lower density, and a second region 32 which is disposed at a position offset from the first region 31 in the circumferential direction, and in which the air inlets 30 are formed at a higher density than in the first region 31.