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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. 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 Flue gas is passed axially out of the combustor chamber at the outlet end and ash is withdrawn tangentially from the combuston chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry. A second mixture of flue gas and ash may be tangentially withdrawn from the outlet end of the combustor chamber and passed to a heat exchanger for cooling.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 cyclonemore » combustor chamber is provided with both the recirculation streams of the first mixture and the second mixture.« less

Inventors:
 [1];  [2]
  1. Reading, MA
  2. Concord, MA
Issue Date:
Research Org.:
THERMO ELECTRON CORP
OSTI Identifier:
867183
Patent Number(s):
4881476
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
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:  
AC22-87PC79650
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cyclone; reactor; internal; separation; axial; recirculation; combustor; apparatus; contains; circular; partition; plate; containing; central; aperture; divides; cylindrical; precombustor; chamber; coal-water; slurry; passed; axially; inlet; primary; air; tangentially; establish; cyclonic; flow; combustion; products; pass; secondary; adjacent; maintain; flue; gas; outlet; ash; withdrawn; combuston; mixture; recirculated; heat; exchanger; cooling; cooled; embodiment; single; provided; streams; partition plate; water slurry; coal-water slurry; combustion products; heat exchange; heat exchanger; air flow; flue gas; secondary air; combustor chamber; plate containing; combustion product; primary air; central circular; cyclone reactor; chamber adjacent; combustor apparatus; apparatus contains; circular aperture; ducts pass; /110/422/

Citation Formats

Becker, Frederick E, and Smolensky, Leo A. Cyclone reactor with internal separation and axial recirculation. United States: N. p., 1989. Web.
Becker, Frederick E, & Smolensky, Leo A. Cyclone reactor with internal separation and axial recirculation. United States.
Becker, Frederick E, and Smolensky, Leo A. Sun . "Cyclone reactor with internal separation and axial recirculation". United States. https://www.osti.gov/servlets/purl/867183.
@article{osti_867183,
title = {Cyclone reactor with internal separation and axial recirculation},
author = {Becker, Frederick E and Smolensky, Leo A},
abstractNote = {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 combustor 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}