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- Title
Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology.
- Authors
Guo, Jun; Wu, Yunfei; Liu, Yin; Cai, Guobin; Li, Dailin; Jin, Yan
- Abstract
The molecular structure of coal is complex, and the existing research methods are limited, so it is difficult to clarify its influence mechanism on the spontaneous-combustion characteristics of coal. In this paper, the previous extraction, FTIR, TPR, TG-DSC and other experimental results are combined to analyze the extraction weakening effect and the correlation analysis of the spontaneous-combustion characteristic parameters of raffinate coal. The results show that extraction can destroy the connection bond of coal molecules, change the content of dominant active groups in the coal spontaneous-combustion reaction, increase the lower limit of the key temperature nodes of coal spontaneous-combustion or extend the temperature range, resulting in an increase in the ignition-point temperature of coal and a decrease in coal quality. This paper will provide a theoretical basis for the study of the microscopic mechanism of coal spontaneous-combustion and then provide new ideas for the development of an active prevention and control technology for coal spontaneous-combustion.
- Subjects
SPONTANEOUS combustion; SOLVENT extraction; MOLECULAR structure; COAL; STATISTICAL correlation; COAL gasification
- Publication
Fire (2571-6255), 2024, Vol 7, Issue 8, p283
- ISSN
2571-6255
- Publication type
Article
- DOI
10.3390/fire7080283