Removal of CO Generated by a Gas Explosion Using a Cu–Mn Elimination Agent

Abstract

Addressing the issue of suffocation and casualties caused by a large amount of poisonous CO gas generated after a gas explosion, research involving an experimental system for the removal of CO using a Cu−Mn elimination agent was studied. The influence of O 2 concentration, temperature, and CO concentration on the elimination performance of the agent after a gas explosion was studied. The quantitative relationship between the amount of CO eliminated, the elimination rate, the O 2 concentration, and temperature was analyzed. Further analysis was completed regarding the influence of O 2 concentration, temperature, and CO concentration on the thermal effect in the elimination process. The results showed that the elimination agent had a rapid effect on the removal of CO. When the ratio of CO concentration to O 2 concentration was closer to the stoichiometric ratio, the elimination and reaction were more complete, the time to complete elimination was shorter, and the peak temperature was higher. As the temperature increased, the time to reach the elimination limit became longer, the elimination rate decreased, the reaction was slower, and the peak temperature was lower. As the CO concentration increased, it was observed that the higher the peak temperature, the longer it took to reach the peak time. The results of the study provide a theoretical support for the catalytic oxidation of CO using the Cu−Mn eliminator after a coal mine gas explosion.

Experimental research on rapid removing characteristics of carbon monoxide generated during gas explosions

“…The widely used nonprecious metal catalysts in China are Cu-supported catalysts. Cu + forms a complex with CO molecules, which is selective for CO catalysis [ 32 ]…”

Influence of CO on Explosion Limits and Characteristics of the CH4/Air Mixture

“…4 − 7 Gas explosions induced by spontaneous combustion of coal are continuous and multiple, 8 , 9 and the concentration of CO generated after the first explosion can be more than 12%. 10 − 12 CO will change the gas explosion characteristics in the coal spontaneous combustion environment. To understand the reaction characteristics and mechanism of the CO/CH 4 /air mixture, it is of great significance to find the most effective way to suppress such combustion and explosion accidents.…”

“…Gas explosions induced by spontaneous combustion of coal in coal mines can cause serious casualties and property damage. − Coal spontaneous combustion causes an increase in ambient temperature while generating CO at concentrations up to 4–6%. − Gas explosions induced by spontaneous combustion of coal are continuous and multiple, , and the concentration of CO generated after the first explosion can be more than 12%. − CO will change the gas explosion characteristics in the coal spontaneous combustion environment. To understand the reaction characteristics and mechanism of the CO/CH 4 /air mixture, it is of great significance to find the most effective way to suppress such combustion and explosion accidents.…”

Effect of Sn on the CO Catalytic Activity and Water Resistance of Cu–Mn Catalyst

“…This phenomenon remarkably reduces the air quality in the coal mine. Accumulation of coal mine gas and coal dust explosion, , coal fire, , and blasting operations in mines , unavoidably produce huge amounts of carbon monoxide (CO) in the mine atmosphere. When a large amount of CO gas is inhaled by a person, it easily combines with hemoglobin in the blood, which results in hypoxia, suffocation, and even death. , Accordingly, it is essential to remove CO from the coal mine atmosphere.…”