The effect of coal erosion on chemical structures and its low-temperature oxidation characteristics

Shengli Guo; Shujie Yuan; Zhuo Yan; Weile Geng

doi:10.1117/12.2624658

6 February 2022 The effect of coal erosion on chemical structures and its low-temperature oxidation characteristics

Shengli Guo, Shujie Yuan, Zhuo Yan, Weile Geng

Proceedings Volume 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021); 120811X (2022) https://doi.org/10.1117/12.2624658
Event: Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 2021, Chongqing, China

Abstract

The pH value of erosion solution may be one of the external factors affecting coal spontaneous combustion. The erosion effect on chemical structures and oxidation behavior of experimental coal samples were studied. The microcrystalline structure and active group of coal samples were analyzed utilizing X-ray diffractometer and infrared spectra. The coal oxidation characteristic was studied by temperature-programmed experiment. The results show that compared with the raw coal the number of aromatic sheets and coalification degree of eroded coal decreased, and microcrystalline structure is looser. Active groups content such as hydroxyl, aliphatic structures and oxygen-containing functional groups increased. Eroded coals, especially the coal eroded in acid aqueous solution, show more oxygen consumption and gas production after erosion treatment in coal oxidation process. Erosion effect can change the chemical structure of coal, resulting in a stronger tendency of spontaneous combustion.

Citation Download Citation

Shengli Guo, Shujie Yuan, Zhuo Yan, and Weile Geng "The effect of coal erosion on chemical structures and its low-temperature oxidation characteristics", Proc. SPIE 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 120811X (6 February 2022); https://doi.org/10.1117/12.2624658

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available