Search Results - "Qi, Xuyao"

Reaction pathways and cyclic chain model of free radicals during coal spontaneous combustion by Chen, Liangzhou, Qi, Xuyao, Tang, Jie, Xin, Haihui, Liang, Zhongqiu

“…•The cyclic model of free radicals R1 ~ R9 during coal self-heating was proposed.•Most reactions in free radicals are exothermic with a maximum heat release of…”
Get full text

Reaction mechanism of catalytic gasification by calcium-based catalysts and oxidized coal residues in coalfield fire zones by Chen, Liangzhou, Lu, Wei, Qi, Xuyao

“…Fires originating from coal spontaneous combustion within coalfields result not only in substantial coal resource depletion but also producing residual…”
Get full text

Reaction activity and mechanism of R3-CH structure oxidation in coal self-heating by Chen, Liangzhou, Qi, Xuyao, Zhang, Yabo, Xin, Haihui, Liang, Zhongqiu

“…•R3-CH structure especially the H atom is the most active site in coal self-heating with oxygen.•The free energy barrier of oxygen attacking R3-CH site is 8.28…”
Get full text

Research on the Diffusion Law of Fire Extinguishment Slurry to Prevent Coal Spontaneous Combustion in Regenerated Roof by Wang, Tao, Qi, Xuyao, Hao, Zhifeng, Zhang, Lanjun, Lu, Yi, Ji, Youcang, Liang, Zhongqiu

“…Coal is a major part to stable energy structure. Borehole Grouting is a primary method used for the prevention and control of coal spontaneous combustion in…”
Get full text

Detection and management of coal seam outcrop fire in China: a case study by Liu, Yang, Qi, Xuyao, Luo, Dayong, Zhang, Yongqing, Qin, Jiangtao

“…The outcrop fire area in Rujigou Coal Mine in Ningxia, China has been burning continuously for over 100 years. This not only results in wastage of resources…”
Get full text

Controlled-release inhibitor for preventing the spontaneous combustion of coal by Qi, Xuyao, Wei, Cunxiang, Li, Qizhong, Zhang, Libin

“…The existing coal self-heating inhibitors usually have the shortcomings of short effective time and low inhibition effect. This study proposed a kind of…”
Get full text

In Situ FTIR Study of Real-Time Changes of Active Groups during Oxygen-Free Reaction of Coal by Qi, Xuyao, Wang, Deming, Xin, Haihui, Qi, Guansheng

“…The distribution of functional groups in two different rank coal samples and their real-time changes during the oxygen-free reaction of coal were tested. An in…”
Get full text

An Environmentally Friendly Antioxidant Foamed Gel for Inhibiting Spontaneous Combustion of Coal by Huang, Zhian, Quan, Sainan, Hu, Xiangming, Zhang, Yinghua, Gao, Yukun, Ji, Yucheng, Qi, Xuyao, Yin, Yichao

“…Coal spontaneous combustion can cause serious coal mine fire and gas explosion. In order to overcome the problem that the effect of existing materials to…”
Get full text

Kinetics characteristics of coal low-temperature oxidation in oxygen-depleted air by Qi, Guansheng, Wang, Deming, Zheng, Keming, Xu, Jun, Qi, Xuyao, Zhong, Xiaoxing

“…The longwall gob (mined-out) area is one of the main places that are prone to coal spontaneous combustion and most of the residual coal in it is in…”
Get full text

Reaction pathways of hydroxyl groups during coal spontaneous combustion by Qi, Xuyao, Xue, Haibo, Xin, Haihui, Wei, Cunxiang

“…Hydroxyl groups are one of the key factors for the development of coal self-heating, although their detailed reaction pathways are still unclear. This study…”
Get full text

Real-Time Management of Coal Mine Underground Shield Machine Digging Speed Based on Improved Residual Neural Networks by Xu, Huigang, Qi, Xuyao, Liang, Zhongqiu

“…Aiming at the lack of accuracy and effectiveness of the current shield machine speed prediction method, the study proposes to improve the residual network and…”
Get full text

Reaction model and thermodynamic properties between sulfur-containing active groups and oxygen during coal self-heating by Qi, Xuyao, Chen, Liangzhou, Tang, Jie, Xin, Haihui, Liang, Zhongqiu

“…To further study the mechanism of coal self-heating, the reaction sequences and thermodynamic properties between sulfur-containing groups and oxygen during…”
Get full text

Microscopic Structural Evolution of Oxidized Coal Residues with Different Oxidation Degree by Chen, Liangzhou, Qi, Xuyao, Lu, Wei, Li, Jinliang

“…Coalfield fires represent a critical environmental and safety concern, warranting a comprehensive understanding of the factors influencing the reactivity of…”
Get full text

Structural characteristics and low-temperature oxidation thermodynamic properties of coal and gangue in the same coal seam by Zhang, Yabo, Qi, Xuyao, Zhang, Lanjun, Du, Zian, Rao, Yuxuan, Ji, Youcang, Liang, Zhongqiu, Li, Chengyue

“…In order to effectively mitigate the oxidation reactions of coal (RC) and gangue (RG) at low temperatures, a comprehensive study was conducted on the mineral…”
Get full text

Quantum chemistry calculation of reaction pathways of carboxyl groups during coal self-heating by Qi, Xuyao, Xue, Haibo, Xin, Haihui, Bai, Ziming

“…During coal self-heating, reactions of carboxyl groups feature in the evolution of the spontaneous combustion of coal. However, their elementary reaction…”
Get full text

The competitive reaction mechanism between oxidation and pyrolysis consumption during low‐rank coal combustion at lean‐oxygen conditions: A quantitative calculation based on thermogravimetric analyses by Ma, Liyang, Wang, Deming, Xin, Haihui, Qi, Xuyao, Dou, Guolan

“…The evolution of the oxidation‐pyrolysis competitive mechanism during low‐rank coal combustion at lean‐oxygen conditions determines the development of the…”
Get full text

Differences in smoldering characteristics of coal piles with different smoldering propagation directions by Guansheng, Qi, Wei, Lu, Xuyao, Qi, Xiaoxing, Zhong, Weimin, Cheng, Fangming, Liu

“…Smoldering combustion frequently occurs in the mined-out gobs of coal mines. This can act as an ignition source, triggering gas explosions and resulting in…”
Get full text

Detection of Spontaneous Combustion Areas of Coal Gangue Dumps and Comprehensive Governance Technologies: A Case Study by Liu, Yang, Qi, Xuyao, Luo, Dayong, Zhang, Yongqing, Qin, Jiangtao

“…Spontaneous combustion of coal gangue dumps not only releases toxic and harmful gases, polluting the environment, but also leads to explosion accidents and…”
Get full text

Research on the Law of Coal Pillar Spontaneous Combustion and Fire Prevention and Control Technology by Liu, Yang, Qi, Xuyao, Luo, Dayong, Zhang, Yongqing, Yin, Dexing

“…In coal pillar fires, the fire source is hard to be detected and the adjacent goaf is extremely likely to be affected. Such fires would give rise to thermal…”
Get full text

Reaction Mechanism of Aldehyde Groups during Coal Self-Heating by Qi, Xuyao, Li, Yawen, Chen, Liangzhou, Tang, Jie, Xin, Haihui, Liang, Zhongqiu

“…In order to further understand the mechanism of coal self-heating in the initial stage, the aldehyde group was analyzed by using the quantum chemistry methods…”
Get full text