Fuel combustor

Details Fuel combustor Fuel combustor

F - Mech Eng,Light,Heat,Weapons

23

K

110/19

F23K 3/00 (2006.01) F23C 3/00 (2006.01) F23C 6/04 (2006.01) F23C 7/02 (2006.01) F23J 1/08 (2006.01)

Patent

CA 1181998

ABSTRACT OF THE DISCLOSURE FUEL COMBUSTOR A combustor and a corresponding method for its operation, wherein the fuel, which is pulverized coal in the illustrative embodiment, is first reacted with at least a portion of oxidizer gas flow directed to the head end (20) of the combustor. Combustion in the head end proceeds at a substantially lower stoiohiometric ratio than the overall ratio for the combustor, which therefore operates at a relatively low temperature and high thermodynamic effi- ciency, while maintaining good. slag removal characteris- tics. Of the several embodiments disclosed, one group has an oxidizer inlet (12) from which oxidizer gas splits into a component directed toward the head end, where the first phase of combustion takes place, head-end and a component directed toward the exit end (18), where a second phase of combustion takes place. In another group of embodiments, oxidizer is directed only toward the head end, and the resultant exiting gas is rich in combustibles.

398337

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