Study of the Effect of Drive Gas Type on the Inhibition of Coal Spontaneous Combustion by Ternary System Foam

Nan Chen; Hailin Jia; Xiangyu ShaoRongkun PanLigang ZhengChang LuLong Cheng

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Study of the Effect of Drive Gas Type on the Inhibition of Coal Spontaneous Combustion by Ternary System Foam

机译：Study of the Effect of Drive Gas Type on the Inhibition of Coal Spontaneous Combustion by Ternary System Foam

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Evaluation of the fire extinguishing capacity of homemade foams under different driving gases by thermogravimetric experiments. When the concentration of LS-99/SDS/isobutyl alcohol is 0.1, the expansion ratio can be 52.54 times, 25 drainage time is 210s. Coal spontaneous combustion processes shift toward the high temperature region under the action of foam. The maximum mass loss velocity is reduced. Activation energy analysis shows that the composite inhibition rate of air foam is 64.56, and nitrogen foam has a 28.18 increase compared to air foam. The heat release decreases under the action of air foam. The coal sample exhibits a heat absorption process in the presence of nitrogen foam. In addition, the mechanism of foam inhibition of coal spontaneous combustion was analyzed from physical and chemical perspectives. In summary, nitrogen foam is more effective than air foam in extinguishing spontaneous coal combustion processes.

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来源
《Combustion science and technology》 |2023年第12期|2556-2569|共14页
作者
Nan Chen; Hailin Jia; Xiangyu ShaoRongkun PanLigang ZhengChang LuLong Cheng;
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作者单位

Collaborative Innovation Center of Coal Safety and Clean High Efficiency Utilization, Henan Polytechnic University, Jiaozuo, China, School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, China;

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原文格式 PDF
正文语种英语
中图分类热力工程、热机;
关键词
Coal spontaneous combustion; foam; composite inhibitor; activation energy; inhibition rate;

Study of the Effect of Drive Gas Type on the Inhibition of Coal Spontaneous Combustion by Ternary System Foam

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