| 摘要 |
PROBLEM TO BE SOLVED: To provide a coal fired boiler reducing NOx by enhancing combustion efficiency of coal and suppressing necessary height of a furnace. SOLUTION: The coal fired boiler includes: a plurality of pulverized coal burners 3 arranged on a furnace wall 12 of the furnace 11; over air ports 4 arranged above the pulverized coal burners 3 and supplying secondary air; and byproduct gas burners 13 arranged between the pulverized coal burners 3 and the over air ports 4 and performing mixed combustion of byproduct gases. COPYRIGHT: (C)2011,JPO&INPIT |
