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Title: Tube construction for fluidized bed combustor

Abstract

A fluidized bed combustor comprises a reactor or a housing which has a windbox distributor plate adjacent the lower end thereof which contains a multiplicity of hole and air discharge nozzles for discharging air and coal into a fluidized bed which is maintained above the distributor plate and below a take-off connection or flue to a cyclone separator in which some of the products of combustion are treated to remove the dust which is returned into the fluidized bed. A windbox is spaced below the fluidized bed and it has a plurality of tubes passing therethrough with the passage of combustion air and fluidizing air which passes through an air space so that fluidizing air is discharged into the reaction chamber fluidized bed at the bottom thereof to maintain the bed in a fluidized condition. A fluid, such as air, is passed through the tubes which extend through the windbox and provide a preheating of the combustion air and into an annular space between telescoped inner and outer tubes which comprise heat exchanger tubes or cooling tubes which extend upwardly through the distributor plate into the fluidized bed. The heat exchanger tubes are advantageously arranged so that they may bemore » exposed in groups within the reactor in a cluster which is arranged within holding rings.« less

Inventors:
 [1];  [2]
  1. (Totowa, NJ)
  2. (Mt. Tabor, NJ)
Issue Date:
Research Org.:
Curtiss-Wright Corp
OSTI Identifier:
865097
Patent Number(s):
4460037
Assignee:
Curtiss-Wright Corporation (NJ) OSTI
DOE Contract Number:  
EX-76-C-01-1726
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
tube; construction; fluidized; bed; combustor; comprises; reactor; housing; windbox; distributor; plate; adjacent; contains; multiplicity; air; discharge; nozzles; discharging; coal; maintained; below; take-off; connection; flue; cyclone; separator; products; combustion; treated; remove; dust; returned; spaced; plurality; tubes; passing; therethrough; passage; fluidizing; passes; space; discharged; reaction; chamber; bottom; maintain; condition; fluid; passed; extend; provide; preheating; annular; telescoped; inner; outer; comprise; heat; exchanger; cooling; upwardly; advantageously; arranged; exposed; cluster; holding; rings; combustor comprises; exchanger tubes; cyclone separator; reaction chamber; heat exchange; fluidized bed; heat exchanger; combustion air; outer tube; bed combustor; annular space; fluidizing air; outer tubes; passing therethrough; distributor plate; cooling tubes; spaced below; cooling tube; tubes passing; extend upwardly; tube construction; windbox distributor; tubes pass; plate adjacent; air discharge; air space; discharge nozzles; /165/

Citation Formats

De Feo, Angelo, and Hosek, William. Tube construction for fluidized bed combustor. United States: N. p., 1984. Web.
De Feo, Angelo, & Hosek, William. Tube construction for fluidized bed combustor. United States.
De Feo, Angelo, and Hosek, William. Sun . "Tube construction for fluidized bed combustor". United States. https://www.osti.gov/servlets/purl/865097.
@article{osti_865097,
title = {Tube construction for fluidized bed combustor},
author = {De Feo, Angelo and Hosek, William},
abstractNote = {A fluidized bed combustor comprises a reactor or a housing which has a windbox distributor plate adjacent the lower end thereof which contains a multiplicity of hole and air discharge nozzles for discharging air and coal into a fluidized bed which is maintained above the distributor plate and below a take-off connection or flue to a cyclone separator in which some of the products of combustion are treated to remove the dust which is returned into the fluidized bed. A windbox is spaced below the fluidized bed and it has a plurality of tubes passing therethrough with the passage of combustion air and fluidizing air which passes through an air space so that fluidizing air is discharged into the reaction chamber fluidized bed at the bottom thereof to maintain the bed in a fluidized condition. A fluid, such as air, is passed through the tubes which extend through the windbox and provide a preheating of the combustion air and into an annular space between telescoped inner and outer tubes which comprise heat exchanger tubes or cooling tubes which extend upwardly through the distributor plate into the fluidized bed. The heat exchanger tubes are advantageously arranged so that they may be exposed in groups within the reactor in a cluster which is arranged within holding rings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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