Assessment of the Effect of Oxygen and Carbon Dioxide Concentrations on Gas Evolution During Heat Treatment of Thermoanthracite Carbon Material
			
	
 
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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
				 
			 
										
				
				
		
		 
			
			
		
		
		
		
		
			
			 
			Publication date: 2020-02-01
			 
		 			
		 
	
							
					    		
    			 
    			
    				    					Corresponding author
    					    				    				
    					Olena  Ivanenko   
    					Faculty of Chemical Engineering, Igor Sikorsky Kyiv Polytechnic Institute, Peremogy Avenu, 37/4, 03056 Kyiv, Ukraine
    				
 
    			
				 
    			 
    		 		
			
																											 
		
	 
		
 
 
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.