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Title: Slurry burner for mixture of carbonaceous material and water

Abstract

A carbonaceous material-water slurry burner includes a high pressure tip-emulsion atomizer for directing a carbonaceous material-water slurry into a combustion chamber for burning therein without requiring a support fuel or oxygen enrichment of the combustion air. Introduction of the carbonaceous material-water slurry under pressure forces it through a fixed atomizer wherein the slurry is reduced to small droplets by mixing with an atomizing air flow and directed into the combustion chamber. The atomizer includes a swirler located immediately adjacent to where the fuel slurry is introduced into the combustion chamber and which has a single center channel through which the carbonaceous material-water slurry flows into a plurality of diverging channels continuous with the center channel from which the slurry exits the swirler immediately adjacent to an aperture in the combustion chamber. The swirler includes a plurality of slots around its periphery extending the length thereof through which the atomizing air flows and by means of which the atomizing air is deflected so as to exert a maximum shear force upon the carbonaceous material-water slurry as it exits the swirler and enters the combustion chamber. A circulating coolant system or boiler feed water is provided around the periphery of the burnermore » along the length thereof to regulate burner operating temperature, eliminate atomizer plugging, and inhibit the generation of sparklers, thus increasing combustion efficiency. A secondary air source directs heated air into the combustion chamber to promote recirculation of the hot combustion gases within the combustion chamber.« less

Inventors:
 [1];  [2]
  1. West Mifflin, PA
  2. Bethel Park, PA
Issue Date:
Research Org.:
MANAGEMENT & TECH SERV CO
OSTI Identifier:
866150
Patent Number(s):
4644878
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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:  
AC22-82PC51504
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
slurry; burner; mixture; carbonaceous; material; water; material-water; pressure; tip-emulsion; atomizer; directing; combustion; chamber; burning; therein; requiring; support; fuel; oxygen; enrichment; air; introduction; forces; fixed; reduced; droplets; mixing; atomizing; flow; directed; swirler; located; immediately; adjacent; introduced; single; center; channel; flows; plurality; diverging; channels; continuous; exits; aperture; slots; periphery; extending; length; means; deflected; exert; maximum; shear; force; enters; circulating; coolant; boiler; feed; provided; regulate; operating; temperature; eliminate; plugging; inhibit; generation; sparklers; increasing; efficiency; secondary; source; directs; heated; promote; recirculation; hot; gases; pressure forces; oxygen enrichment; combustion efficiency; material-water slurry; air source; carbonaceous material-water; water slurry; air flows; hot combustion; heated air; combustion chamber; carbonaceous material; combustion gases; air flow; operating temperature; combustion air; secondary air; combustion gas; immediately adjacent; slurry flow; boiler feed; circulating coolant; source directs; shear force; feed water; slurry burner; /110/239/

Citation Formats

Nodd, Dennis G, and Walker, Richard J. Slurry burner for mixture of carbonaceous material and water. United States: N. p., 1987. Web.
Nodd, Dennis G, & Walker, Richard J. Slurry burner for mixture of carbonaceous material and water. United States.
Nodd, Dennis G, and Walker, Richard J. Thu . "Slurry burner for mixture of carbonaceous material and water". United States. https://www.osti.gov/servlets/purl/866150.
@article{osti_866150,
title = {Slurry burner for mixture of carbonaceous material and water},
author = {Nodd, Dennis G and Walker, Richard J},
abstractNote = {A carbonaceous material-water slurry burner includes a high pressure tip-emulsion atomizer for directing a carbonaceous material-water slurry into a combustion chamber for burning therein without requiring a support fuel or oxygen enrichment of the combustion air. Introduction of the carbonaceous material-water slurry under pressure forces it through a fixed atomizer wherein the slurry is reduced to small droplets by mixing with an atomizing air flow and directed into the combustion chamber. The atomizer includes a swirler located immediately adjacent to where the fuel slurry is introduced into the combustion chamber and which has a single center channel through which the carbonaceous material-water slurry flows into a plurality of diverging channels continuous with the center channel from which the slurry exits the swirler immediately adjacent to an aperture in the combustion chamber. The swirler includes a plurality of slots around its periphery extending the length thereof through which the atomizing air flows and by means of which the atomizing air is deflected so as to exert a maximum shear force upon the carbonaceous material-water slurry as it exits the swirler and enters the combustion chamber. A circulating coolant system or boiler feed water is provided around the periphery of the burner along the length thereof to regulate burner operating temperature, eliminate atomizer plugging, and inhibit the generation of sparklers, thus increasing combustion efficiency. A secondary air source directs heated air into the combustion chamber to promote recirculation of the hot combustion gases within the combustion chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

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