Inventors:
Jer-Yu Shang - Fairfax VA
Joseph S. Mei - Morgantown WV
John S. Wilson - Morgantown WV
Assignee:
The United States of America as represented by the United States
_Department of Energy - Washington DC
International Classification:
F23D 1900
Abstract:
The present invention is directed to a fluidized-bed combustion apparatus provided with a U-shaped combustion zone. A cyclone is disposed in the combustion zone for recycling solid particulate material. The combustion zone configuration and the recycling feature provide relatively long residence times and low freeboard heights to maximize combustion of combustible material, reduce nitrogen oxides, and enhance sulfur oxide reduction.