Patent ID: 6145454
Filing Date: 2000-11-14
Classification: F23C

Abstract:
A tangentially-fired furnace, comprising:(a) a coutant bottom and walls intersecting generally horizontally with said coutant bottom and extending generally vertically therefrom to enclose and define an interior combustion chamber;(b) a first windbox located at an intersection of two of said walls and having therein a vertical array of adjacently spaced coal compartments each including a coal nozzle, a said coal nozzle of the lowermost coal compartment being located at least ten feet from the intersection of said walls with said coutant bottom; and(c) a second windbox located at said intersection of said two walls and having therein a coal compartment with a coal nozzle and an air opening located in proximity thereto for admission of fuel air, said coal nozzle within said coal compartment of said second windbox being located within ten feet of said intersection of said walls with said coutant bottom.