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Title: Hybrid fluidized bed combuster

A first atmospheric bubbling fluidized bed furnace is combined with a second turbulent, circulating fluidized bed furnace to produce heat efficiently from crushed solid fuel. The bed of the second furnace receives the smaller sizes of crushed solid fuel, unreacted limestone from the first bed, and elutriated solids extracted from the flu gases of the first bed. The two-stage combustion of crushed solid fuel provides a system with an efficiency greater than available with use of a single furnace of a fluidized bed.
Authors:
 [1] ;  [2]
  1. (Windsor, CT)
  2. (Poquonock, CT)
Publication Date:
OSTI Identifier:
864177
Report Number(s):
US 4325327
DOE Contract Number:
EX-76-C-01-2473
Resource Type:
Patent
Research Org:
Combustion Engineering, Inc., Windsor, CT (USA)
Country of Publication:
United States
Language:
English
Subject:
hybrid; fluidized; bed; combuster; atmospheric; bubbling; furnace; combined; turbulent; circulating; produce; heat; efficiently; crushed; solid; fuel; receives; sizes; unreacted; limestone; elutriated; solids; extracted; flu; gases; two-stage; combustion; provides; efficiency; available; single; circulating fluid; solid fuel; fluidized bed; fuel provides; bed furnace; produce heat; circulating fluidized; heat efficiently; /122/110/