BOILER PLANT Russian patent published in 2019 - IPC F22G5/02 

FIELD: power engineering.

SUBSTANCE: invention relates to the field of production of heat energy in TPPs in the form of superheated steam by means of chamber combustion of fuel in a boiler furnace with the help of burners. It can also be used in metallurgical heat engineering to regulate the temperature distribution of the flame inside the furnaces and gas ducts of furnaces in order to reduce emissions of nitrogen oxide with flue gases into the atmosphere. Boiler plant containing a screened furnace, a drum, a horizontal gas duct in which a steam superheater connected to an interstage superheater is located, a down take duct, an economizer, a superheated steam temperature control system including a main steam superheat temperature sensor installed at the burner corners with the possibility of horizontal and vertical rotation, and a superheated steam temperature control system, equipped with a second steam superheat temperature sensor, which is electrically connected with the actuators of the burners rotation drives in the horizontal and vertical planes. According to the present invention, it further comprises a flue gas intake from a down take that is technologically connected with a recirculating motor-driven exhaust fan and a mixer, a flame heat radiation sensor, and the actuator of burners rotation drives has an additional computerized software control unit technologically connected by electrical connections to the flame heat radiation sensor, gas analyzer, electric drive of recirculating smoke extractor.

EFFECT: prevention of increased harmful emissions of nitrogen oxides when switching to high steam loads and to burning fuel with high heat value, as well as switching to burning fuel oil while maintaining sufficiently high efficiency values.

1 cl, 2 dwg