Patent ID: 6959654
Filing Date: 2005-11-01
Classification: F23G,F23J,F23L,F23N,Y02E

Abstract:
1. In a solid fuel fed combustor having an inlet feed for solid fuel and a combustion chamber including a first burner stage having a first traveling conveyor firebelt with means for introducing air along the length of said first traveling conveyor firebelt from below solid fuel on said first traveling conveyor firebelt and a second burner stage having a second traveling conveyor firebelt and means for introducing air along the length of said second traveling conveyor firebelt from below solid fuel on said second traveling conveyor firebelt, a method of minimizing production of carbon monoxide and nitrogen oxide pollutants comprising the step for controlling the amount of air introduced in said first and second burner stages so that air in progressively increasing amounts is supplied to solid fuel along the length of said first traveling conveyor firebelt and air in progressively decreasing amounts is supplied to solid fuel traveling along the length of said second traveling conveyor firebelt and also the step for controlling the speed of said firebelts such that endothermic decomposition of solid fuel takes place in said first burner stage and exothermic combustion and decomposition of solid fuel takes place in said second burner stage.