Study of Flue-Gas Recirculation Sintering

Study of Flue-Gas Recirculation Sintering

The sintering process in a sinter machine with a sintering area of 224 m 2 involving recirculation of flue gas to reduce the emission of harmful substances into the atmosphere and its flow through a bag filter to be installed after the existing electrostatic precipitator is analyzed. Alternatives of...

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Bibliographic Details
Published in:Metallurgist (New York) Vol. 61; no. 7-8; pp. 629 - 637
Main Authors: Frolov, Yu. A., Nokesh, Aggarwal, Polotskii, L. I.
Format: Journal Article
Language:English
Published: New York Springer US 01-11-2017
Springer
Springer Nature B.V
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Emissions control
Flue gas
Gas flow
Materials Science
Metallic Materials
Oxygen content
Sintering
Solid fuels
bed
fuel
suction
consumption
air
recirculation
sinter machine
flue gas
wind box
exhauster
gas
mathematical model
temperature
leakages
emissions
oxygen
dust
mix
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Summary:The sintering process in a sinter machine with a sintering area of 224 m 2 involving recirculation of flue gas to reduce the emission of harmful substances into the atmosphere and its flow through a bag filter to be installed after the existing electrostatic precipitator is analyzed. Alternatives of supplying a portion of the flue gas alone or mixed with atmospheric air or hot air from the sinter cooler to the bed to increase the oxygen content of the gas are considered. It is shown that forcing atmospheric air into the bed is inappropriate. It is recommended to recirculate a mixture of 70% flue gas and 30% air. Implementing the recommended alternative will reduce the gas flow through the bag filter by 30–35%, the CO emissions into the atmosphere by 8136 tons/yr, and the solid fuel consumption by 5600 tons/yr.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-017-0544-3