Assessment of the Effect of Oxygen and Carbon Dioxide Concentrations on Gas Evolution During Heat Treatment of Thermoanthracite Carbon Material
Olena Ivanenko 1  
,  
Yevgen Panov 1  
,  
Nikolai Gomelia 1  
,  
Andrii Vahin 2  
,  
 
 
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1
Faculty of Chemical Engineering, Igor Sikorsky Kyiv Polytechnic Institute, Peremogy Avenu, 37/4, 03056 Kyiv, Ukraine
2
Private Joint Stock Company «Ukrainian Graphite», Pivnichne shose str., 20, 69600 Zaporizhzhia,Ukraine
CORRESPONDING AUTHOR
Olena Ivanenko   

Faculty of Chemical Engineering, Igor Sikorsky Kyiv Polytechnic Institute, Peremogy Avenu, 37/4, 03056 Kyiv, Ukraine
Publication date: 2020-02-01
 
J. Ecol. Eng. 2020; 21(2):139–149
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ABSTRACT
The processes of the interaction of carbon material (thermoanthracite pouring) with a gas-air mixture in a heat chamber are studied while heating to 800-850 °C. The influence of temperature, oxygen and carbon dioxide concentration on the formation efficiency of carbon monoxide, carbon dioxide, hydrogen and methane is determined. A pilot plant is created, which provided heating of the carbon material at the indicated temperatures and regulating the supply of air and carbon dioxide. It is found that a noticeable oxidation of the carbon material in the heat chamber in the presence of oxygen or carbon dioxide occurs at temperatures above 500 °C. Significant concentrations of carbon monoxide are formed at temperatures of 600-800 °C. It is shown that when using gas mixtures with an oxygen content of 7-21% minimum concentrations of carbon monoxide are formed at an oxygen content of 14%. At temperatures above 500 °C, the formation of hydrogen and methane in gas flows is noted. The methane yield increases with decreasing oxygen content.