System and method for low load operation of coal mill

摘要

Disclosed herein is a coal fed power generation system 200 comprising a mill 202 in fluid communication with a furnace 206; where the mill 202 is operative to pulverize coal and to ventilate the coal; where the furnace 206 contains more than one burner 210, 212, 214, or burner nozzles; where the burner 210, 212, 214, or burner nozzles are operative to receive the coal from the mill 202 and combust it in the furnace 206; and a plurality of flow control devices 216, 218, 220; where at least one flow control device 216, 218, 220, is in fluid communication with the mill 202 and with the burner 210, 212, 214, or burner nozzle; and where the flow control device 216, 218, 220, that is in fluid communication with the mill 202 and with the burners 210, 212, 214, or burner nozzles is closed to prevent fluid communication between the mill 202 and the furnace 206 during the operation of the furnace 206.