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Title: Cyclone reactor with internal separation and axial recirculation

Abstract

A cyclone combustor apparatus contains a circular partition plate containing a central circular aperture is described. The partition plate divides the apparatus into a cylindrical precombustor chamber and a combustor chamber. A coal-water slurry is passed axially into the inlet end of the precombustor chamber, and primary air is passed tangentially into said chamber to establish a cyclonic air flow. Combustion products pass through the partition plate aperture and into the combustor chamber. Secondary air may also be passed tangentially into the combustor chamber adjacent the partition plate to maintain the cyclonic flow. Flue gas is passed axially out of the combustor chamber at the outlet end and ash is withdrawn tangentially from the combustor chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry. A second mixture may be tangentially withdrawn from the outlet end and passed to a heat exchanger for cooling. Cooled second mixture is then recirculated to the axial inlet of the precombustor chamber. In another embodiment a single cyclone combustor chamber is provided with both themore » recirculation streams of the first mixture and the second mixture. 10 figs.« less

Inventors:
;
Publication Date:
Research Org.:
Thermo Electron Corp., Waltham, MA (USA)
OSTI Identifier:
6314988
Patent Number(s):
PATENTS-US-A7224413
Application Number:
ON: DE89011444
Assignee:
Dept. of Energy TIC; ERA-14-027856; EDB-89-075775
DOE Contract Number:
AC22-87PC79650
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 42 ENGINEERING; CYCLONE COMBUSTORS; DESIGN; COAL; COMBUSTION PRODUCTS; EFFICIENCY; FUEL SLURRIES; HEATING; INVENTIONS; RESIDENTIAL BUILDINGS; BUILDINGS; CARBONACEOUS MATERIALS; COMBUSTORS; DISPERSIONS; ENERGY SOURCES; FOSSIL FUELS; FUELS; MATERIALS; MIXTURES; SLURRIES; SUSPENSIONS; 014000* - Coal, Lignite, & Peat- Combustion; 421000 - Engineering- Combustion Systems

Citation Formats

Becker, F.E., and Smolensky, L.A. Cyclone reactor with internal separation and axial recirculation. United States: N. p., 1988. Web.
Becker, F.E., & Smolensky, L.A. Cyclone reactor with internal separation and axial recirculation. United States.
Becker, F.E., and Smolensky, L.A. 1988. "Cyclone reactor with internal separation and axial recirculation". United States. doi:.
@article{osti_6314988,
title = {Cyclone reactor with internal separation and axial recirculation},
author = {Becker, F.E. and Smolensky, L.A.},
abstractNote = {A cyclone combustor apparatus contains a circular partition plate containing a central circular aperture is described. The partition plate divides the apparatus into a cylindrical precombustor chamber and a combustor chamber. A coal-water slurry is passed axially into the inlet end of the precombustor chamber, and primary air is passed tangentially into said chamber to establish a cyclonic air flow. Combustion products pass through the partition plate aperture and into the combustor chamber. Secondary air may also be passed tangentially into the combustor chamber adjacent the partition plate to maintain the cyclonic flow. Flue gas is passed axially out of the combustor chamber at the outlet end and ash is withdrawn tangentially from the combustor chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry. A second mixture may be tangentially withdrawn from the outlet end and passed to a heat exchanger for cooling. Cooled second mixture is then recirculated to the axial inlet of the precombustor chamber. In another embodiment a single cyclone combustor chamber is provided with both the recirculation streams of the first mixture and the second mixture. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 7
}
  • This patent describes a cyclone combustor apparatus. It contains a circular partition plate containing a central circular aperture. The partition plate divides the apparatus into a cylindrical precombustor chamber and a combustor chamber. A coal-water slurry is passed axially into the inlet end of the precombustor chamber, and primary air is passed tangentially into the chamber to establish a cyclonic air flow. Combustion products pass through the partition plate aperture and into the combustor chamber. Secondarily air may also be passed tangentially into the combustor chamber adjacent the partition plate to maintain the cyclonic flow. Flue gas is passed axiallymore » out of the combustor chamber at the outlet end and ash is withdrawn tangentially from the combustion chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combuston chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry.« less
  • A cyclone combustor apparatus contains a circular partition plate containing a central circular aperture. The partition plate divides the apparatus into a cylindrical precombustor chamber and a combustor chamber. A coal-water slurry is passed axially into the inlet end of the precombustor chamber, and primary air is passed tangentially into said chamber to establish a cyclonic air flow. Combustion products pass through the partition plate aperture and into the combustor chamber. Secondary air may also be passed tangentially into the combustor chamber adjacent the partition plate to maintain the cyclonic flow. Flue gas is passed axially out of the combustormore » chamber at the outlet end and ash is withdrawn tangentially from the combuston chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry. A second mixture of flue gas and ash may be tangentially withdrawn from the outlet end of the combustor chamber and passed to a heat exchanger for cooling. Cooled second mixture is then recirculated to the axial inlet of the precombustor chamber. In another embodiment a single cyclone combustor chamber is provided with both the recirculation streams of the first mixture and the second mixture.« less
  • A reactor and separator apparatus for the separation of solid and fluid phases comprises: (a) a horizontal elongated vessel having a diameter, a horizontal body comprising an imperforate top, a first imperforate side wall, a bottom having a center line and a second perforate side wall for penetration of a fluid phase outlet withdrawal conduit; (b) an elongated tubular reactor having a cross section diameter and interconnecting a portion of the bottom of the vessel at a position adjacent the second perforate side wall and off center from the center line of the bottom defining and off-center ingress as definedmore » by a vertical plane through the diameter of the horizontal body for passage of an admixture of a solid phase admixed with a fluid phase into the horizontal elongated vessel; (c) a downcomer elongated relatively vertical conduit, (d) a fluid phase outlet withdrawal conduit; (e) an inclined slot solid dropout means; (f) a structure support means in the inclined slot solid dropout means for support of the inclined slot solid dropout means; and (g) wherein the fluid phase withdrawal conduit, the horizontal elongated vessel and the tubular reactor are constructed to insure that the diameter of the fluid phase withdrawal conduit is smaller than the diameter of the horizontal elongated vessel.« less
  • An apparatus is provided for introducing secondary air into an internal combustion engine. The apparatus has an air pump coupled to an air injection pipe system, the latter having an end terminating upstream of the catalytic converter, for introducing an amount of secondary air into the exhaust system of the engine. The apparatus further includes a valve device for maintaining the secondary air directed to the exhaust system from the air pump at determined constant pressure; thus, the amount of secondary air introduced into the exhaust system is effectively decreased during high rotational speed engine operation in order to preventmore » the catalytic converter from being overheated.« less