التفاصيل البيبلوغرافية
| العنوان: |
Molecular simulation and experimentation studies on the low-temperature oxidation of water-containing coal in the goaf atmosphere. |
| المؤلفون: |
Haojie Chang, Shengqiang Yang, Yunquan Yao, Tianwei Wang, Jinhui Li |
| المصدر: |
Energy Sources Part A: Recovery, Utilization & Environmental Effects; 2024, Vol. 46 Issue 1, p439-449, 11p |
| مصطلحات موضوعية: |
SPONTANEOUS combustion, COAL, PHYSISORPTION, CHEMICAL reactions, OXYGEN consumption |
| مستخلص: |
The moisture content of coal tends to have a significant impact on the occurrence of spontaneous combustion. In the present study, both molecular simulation and experimental investigation are performed to examine the interaction among water-containing coal and O2 in the goaf atmosphere, with the following conclusions drawn. Firstly, the presence of water and methane impedes the physical adsorption of coal and oxygen at a temperature of 298K. Methane mainly hinders the contact between coal and oxygen through the reduced concentration of oxygen and competitive adsorption. The increase in water content reduces the adsorption density of each gas but makes no difference to their relative proportions in the amounts of adsorption. At the initial stage of coal oxidation (30°C-80°C), the rate of oxygen consumption declines with a rise in water content. However, it is observed immediately after entry into the rapid oxidation stage (80°C-230°C) that the coal sample with a water content of 9.05% is the highest in the intensity of reaction. A higher concentration of methane in the initial atmosphere produces an inhibitory effect on both oxygen adsorption and chemical reaction, which is effective in reducing spontaneous combustion. [ABSTRACT FROM AUTHOR] |
|
Copyright of Energy Sources Part A: Recovery, Utilization & Environmental Effects is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
PDF full text from Publisher 
Full Text Finder