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Title: Hybrid fluidized bed combuster

Abstract

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.

Inventors:
 [1];  [2]
  1. Windsor, CT
  2. Poquonock, CT
Issue Date:
Research Org.:
Combustion Engineering, Inc., Windsor, CT (United States)
OSTI Identifier:
864177
Patent Number(s):
4325327
Assignee:
Combustion Engineering, Inc. (Windsor, CT)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  {A CARRIER GAS OR} AIR 
DOE Contract Number:  
EX-76-C-01-2473
Resource Type:
Patent
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/

Citation Formats

Kantesaria, Prabhudas P, and Matthews, Francis T. Hybrid fluidized bed combuster. United States: N. p., 1982. Web.
Kantesaria, Prabhudas P, & Matthews, Francis T. Hybrid fluidized bed combuster. United States.
Kantesaria, Prabhudas P, and Matthews, Francis T. Fri . "Hybrid fluidized bed combuster". United States. https://www.osti.gov/servlets/purl/864177.
@article{osti_864177,
title = {Hybrid fluidized bed combuster},
author = {Kantesaria, Prabhudas P and Matthews, Francis T},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Patent:

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