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Title: Loop-bed combustion apparatus

Abstract

The present invention is directed to a combustion apparatus in the configuration of a oblong annulus defining a closed loop. Particulate coal together with a sulfur sorbent such as sulfur or dolomite is introduced into the closed loop, ignited, and propelled at a high rate of speed around the loop. Flue gas is withdrawn from a location in the closed loop in close proximity to an area in the loop where centrifugal force imposed upon the larger particulate material maintains these particulates at a location spaced from the flue gas outlet. Only flue gas and smaller particulates resulting from the combustion and innerparticle grinding are discharged from the combustor. This structural arrangement provides increased combustion efficiency due to the essentially complete combustion of the coal particulates as well as increased sulfur absorption due to the innerparticle grinding of the sorbent which provides greater particle surface area.

Inventors:
 [1];  [2];  [3];  [2]
  1. (Fairfax, VA)
  2. (Morgantown, WV)
  3. (Kingwood, WV)
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
865134
Patent Number(s):
4466360
Assignee:
United States of America as represented by United States (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
loop-bed; combustion; apparatus; directed; configuration; oblong; annulus; defining; closed; loop; particulate; coal; sulfur; sorbent; dolomite; introduced; ignited; propelled; rate; speed; flue; gas; withdrawn; location; close; proximity; centrifugal; force; imposed; larger; material; maintains; particulates; spaced; outlet; resulting; innerparticle; grinding; discharged; combustor; structural; arrangement; provides; increased; efficiency; due; essentially; complete; absorption; particle; surface; provides increased; sulfur sorbent; coal particulates; combustion efficiency; centrifugal force; arrangement provides; bed combustion; gas outlet; closed loop; close proximity; particulate material; flue gas; particulate coal; complete combustion; structural arrangement; coal particulate; combustion apparatus; location spaced; particle surface; essentially complete; /110/

Citation Formats

Shang, Jer-Yu, Mei, Joseph S., Slagle, Frank D., and Notestein, John E. Loop-bed combustion apparatus. United States: N. p., 1984. Web.
Shang, Jer-Yu, Mei, Joseph S., Slagle, Frank D., & Notestein, John E. Loop-bed combustion apparatus. United States.
Shang, Jer-Yu, Mei, Joseph S., Slagle, Frank D., and Notestein, John E. Sun . "Loop-bed combustion apparatus". United States. https://www.osti.gov/servlets/purl/865134.
@article{osti_865134,
title = {Loop-bed combustion apparatus},
author = {Shang, Jer-Yu and Mei, Joseph S. and Slagle, Frank D. and Notestein, John E.},
abstractNote = {The present invention is directed to a combustion apparatus in the configuration of a oblong annulus defining a closed loop. Particulate coal together with a sulfur sorbent such as sulfur or dolomite is introduced into the closed loop, ignited, and propelled at a high rate of speed around the loop. Flue gas is withdrawn from a location in the closed loop in close proximity to an area in the loop where centrifugal force imposed upon the larger particulate material maintains these particulates at a location spaced from the flue gas outlet. Only flue gas and smaller particulates resulting from the combustion and innerparticle grinding are discharged from the combustor. This structural arrangement provides increased combustion efficiency due to the essentially complete combustion of the coal particulates as well as increased sulfur absorption due to the innerparticle grinding of the sorbent which provides greater particle surface area.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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