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Comparison Study on Combustion Characteristics between Semicoke and Coke Breeze

Comparison Study on Combustion Characteristics between Semicoke and Coke Breeze The iron and steel industry is a major emitter of pollutant gases into the atmosphere, thus greatly affecting the quality of the environment. It is therefore imperative to find alternative means of reducing the pollutant gases emitted into the atmosphere through sintering activities in the iron and steel industry. This study focuses on semicoke as an alternative sinter fuel to replace coal, coke breeze and other fuels used in iron ore sintering. Specifically, comparison between semicoke and coke breeze was made with respect to their combustion characteristics and combustion efficiency. Investigations were made based on drop tube furnace test results, thermogravimetric analyses and optical microscopy. The chemical kinetics governing the combustion mechanism of semicoke and coke breeze were also investigated. Semicoke was high in volatile, hydrogen, net calorific value and oxygen content. The relatively high volatile content, low ignition and heating temperatures, high combustion index and combustion efficiency of semicoke makes semicoke a better alternative fuel to power sinter plants. Consequently, among the semicoke sample types employed in the study, SC2 semicoke showed high combustion characteristics. This study is relevant in the iron and steel industry as it investigates the validity of combustion efficiency of semicoke. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

Comparison Study on Combustion Characteristics between Semicoke and Coke Breeze

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References (25)

Publisher
Springer Journals
Copyright
Copyright © Allerton Press, Inc. 2021. ISSN 1068-364X, Coke and Chemistry, 2021, Vol. 64, No. 9, pp. 407–416. © Allerton Press, Inc., 2021.
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/s1068364x21090027
Publisher site
See Article on Publisher Site

Abstract

The iron and steel industry is a major emitter of pollutant gases into the atmosphere, thus greatly affecting the quality of the environment. It is therefore imperative to find alternative means of reducing the pollutant gases emitted into the atmosphere through sintering activities in the iron and steel industry. This study focuses on semicoke as an alternative sinter fuel to replace coal, coke breeze and other fuels used in iron ore sintering. Specifically, comparison between semicoke and coke breeze was made with respect to their combustion characteristics and combustion efficiency. Investigations were made based on drop tube furnace test results, thermogravimetric analyses and optical microscopy. The chemical kinetics governing the combustion mechanism of semicoke and coke breeze were also investigated. Semicoke was high in volatile, hydrogen, net calorific value and oxygen content. The relatively high volatile content, low ignition and heating temperatures, high combustion index and combustion efficiency of semicoke makes semicoke a better alternative fuel to power sinter plants. Consequently, among the semicoke sample types employed in the study, SC2 semicoke showed high combustion characteristics. This study is relevant in the iron and steel industry as it investigates the validity of combustion efficiency of semicoke.

Journal

Coke and Chemistry – Springer Journals

Published: Sep 1, 2021

Keywords: iron and steel; semicoke; coke breeze; combustion characteristics; optical microscopy

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