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Title: Reversed flow fluidized-bed combustion apparatus

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.
Authors:
 [1] ;  [2] ;  [2]
  1. (Fairfax, VA)
  2. (Morgantown, WV)
Publication Date:
OSTI Identifier:
865180
Report Number(s):
US 4475884
Resource Type:
Patent
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Country of Publication:
United States
Language:
English
Subject:
reversed; flow; fluidized-bed; combustion; apparatus; directed; fluidized-bed; combustion; apparatus; provided; u-shaped; combustion; zone; cyclone; disposed; combustion; zone; recycling; solid; particulate; material; combustion; zone; configuration; recycling; feature; provide; relatively; residence; times; freeboard; heights; maximize; combustion; combustible; material; reduce; nitrogen; oxides; enhance; sulfur; oxide; reduction; nitrogen oxide; fluidized-bed combustion; fluidized-bed combustion; residence times; sulfur oxide; bed combustion; bed combustion; solid particulate; residence time; nitrogen oxides; particulate material; combustion zone; combustion zone; combustion zone; combustible material; provide relatively; combustion apparatus; combustion apparatus; flow fluid /431/110/422/432/