COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BOILER, BOILER, AND METHOD FOR OPERATING BOILER

摘要

Provided is a combustion burner including: a fuel nozzle (51) that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle (52) that is able to blow secondary air from the outside of the fuel nozzle (51); a flame stabilizer (54) that is provided at a front end portion of the fuel nozzle (51) so as to be near the axis center; and a rectification member (55) that is provided between the inner wall surface of the fuel nozzle (51) and the flame stabilizer (54), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized.

主权项

1. A combustion burner comprising:
a fuel nozzle that is arranged to blow a fuel gas obtained by mixing solid fuel with air; a secondary air nozzle that is arranged to blow air from the outside of the fuel nozzle; a flame stabilizer that is provided at a front end portion of the fuel nozzle so as to be near an axis center side of the fuel nozzle; and a guide member that is provided at a front end portion of the fuel nozzle and is arranged to guide the fuel gas flowing through the fuel nozzle toward the axis center side of the fuel nozzle, wherein the guide member is disposed between an inner wall surface of the fuel nozzle and the flame stabilizer.