Study on the inhibition effect of citric acid on coal spontaneous combustion

Liu, Peiyu; Li, Zenghua; Zhang, Xiaoyan; Li, Jinhu; Miao, Guodong; Cao, Shaodong; Li, Song

doi:10.1016/j.fuel.2021.122268

Cited by 30 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…that are attached to macromolecular side chains can promote the production of active radicals. [54][55][56][57] DL-malic acid and citric acid mainly produce stable complexes by chelating metal elements (M), inhibiting the activation of side chain groups by metal elements, and reducing the content of active groups in coal (Figures 15 and 16). At the same time, citric acid can improve the smoothness, reduce the pore size and reduce the oxygen storage capacity of coal.…”

Section: Antioxidant Inhibitorsmentioning

confidence: 99%

Review and prospects of research on materials to prevent and extinguish mine fires

Niu

Sun

et al. 2023

Fire and Materials

View full text Add to dashboard Cite

Coal spontaneous combustion (CSC) has hindered the utilization of coal resources and the development of the global economy for centuries. At present, many materials are used for preventing and extinguishing CSC fires, and different types of materials have various sites of action. In this paper, research on CSC fire prevention and extinguishing materials is reviewed and proposed. The preparation schemes and effects of physical barrier materials, chemical inhibitors, composite materials, and other fields of fire prevention materials were discussed. The improved compounding schemes of CSC inhibiting materials were analyzed regarding the characteristics of base materials and material properties. It was found that in the field of fire prevention materials, plant extracts, hydrolyzed proteins, biomass, and other green recycling materials have gradually become the new trend in materials. The composite material has a synergistic physical barrier and chemical inhibition and has a good inhibitory effect on coal heat storage and group activation, which has become an inhibitory material that is highly concerning. CSC inhibiting technology involving microbial control has emerged and exhibits notable characteristics, including a green cycle and long action time, but its application still needs to control the coexistence of heterogeneous microorganisms and improve the environmental livability. High‐quality firefighting materials, which are used in preventing battery fires, fighting building fires, inert coatings of cotton fabric, and other fields, have potential applicational value for CSC prevention. This review aims to provide new ideas for the research of CSC fireproof materials.

show abstract

Section: Antioxidant Inhibitorsmentioning

confidence: 99%

Review and prospects of research on materials to prevent and extinguish mine fires

Niu

Sun

et al. 2023

Fire and Materials

View full text Add to dashboard Cite

show abstract

“…[30][31][32][33][34] Metalembedded carbon-based heterogeneous catalysts have also been developed for the HDO of vanillin and other biomassderived compounds. [34][35][36][37][38] Owing to the high cost of Pd and noble metals, robust and economical metal carbide-, phosphide-, nitride-, and oxide-based catalysts have been developed for the HDO process. [39][40][41][42][43] CoMo-supported Al 2 O 3 afforded insufficient activity and selectivity in vanillin reduction even under harsh reaction conditions (300 °C and 5 MPa H 2 ).…”

Section: Introductionmentioning

confidence: 99%

Improving the hydrodeoxygenation activity of vanillin and its homologous compounds by employing MoO₃-incorporated Co-BTC MOF-derived MoCoO_x@C

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The air circulation in the goaf was insufficient, resulting in an accumulated heat that could not be discharged in time. The increase of temperature made it easier for CSC to occur in the mine. − The oxygen in the air reacted with the reactive groups in the coal, and the coal began to generate heat. , The heat generated by the low-temperature oxidation of coal cannot dissipate in time in a limited space, and the accumulated heat would further accelerate the oxidation reaction . After entering the rapid oxidation stage, the heat would make the surrounding temperature increase rapidly, and the spontaneous combustion tendency of coal would increase. , CSC produced toxic and harmful gases (such as CO, CH 4 , C 2 H 2 , C 2 H 4 , and C 2 H 6 ), which seriously endangered the life and health of workers and the ecological environment. , CSC would also cause gas and dust explosion, resulting in huge economic losses.…”

Section: Introductionmentioning

confidence: 99%

“… 14 , 15 The heat generated by the low-temperature oxidation of coal cannot dissipate in time in a limited space, and the accumulated heat would further accelerate the oxidation reaction. 16 After entering the rapid oxidation stage, the heat would make the surrounding temperature increase rapidly, and the spontaneous combustion tendency of coal would increase. 17 , 18 CSC produced toxic and harmful gases (such as CO, CH 4 , C 2 H 2 , C 2 H 4 , and C 2 H 6 ), which seriously endangered the life and health of workers and the ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Influence of High Sulfate Mine Water on Spontaneous Combustion of Coal

et al. 2022

View full text Add to dashboard Cite

Mine water cannot be discharged until it has been treated, which increases the cost of mining and causes environmental damage. This paper attempted to use sulfate mine water as a flame retardant material for the treatment of coal spontaneous combustion (CSC) in underground mines. The temperature-programed experimental device and gas chromatograph were used to simulate the low-temperature oxidation process of coal. Infrared spectroscopy was used to study the influence and inhibition mechanism of mine water and chloride inhibitor on active functional groups. It was found that although the sulfate mine water inhibited the formation of −OH, it accelerated the cleavage of the aromatic ring. The thermogravimetric experiment was used to analyze the ignition temperature and activation energy of different coal samples. It was found that mine water had an obvious effect on inhibiting CSC in the combustion stage, which could increase the oxidation temperature of coal.

show abstract

Study on the inhibition effect of citric acid on coal spontaneous combustion

Cited by 30 publications

References 47 publications

Review and prospects of research on materials to prevent and extinguish mine fires

Review and prospects of research on materials to prevent and extinguish mine fires

Improving the hydrodeoxygenation activity of vanillin and its homologous compounds by employing MoO₃-incorporated Co-BTC MOF-derived MoCoO_x@C

Influence of High Sulfate Mine Water on Spontaneous Combustion of Coal

Contact Info

Product

Resources

About

Study on the inhibition effect of citric acid on coal spontaneous combustion

Cited by 30 publications

References 47 publications

Review and prospects of research on materials to prevent and extinguish mine fires

Review and prospects of research on materials to prevent and extinguish mine fires

Improving the hydrodeoxygenation activity of vanillin and its homologous compounds by employing MoO3-incorporated Co-BTC MOF-derived MoCoOx@C

Influence of High Sulfate Mine Water on Spontaneous Combustion of Coal

Contact Info

Product

Resources

About

Improving the hydrodeoxygenation activity of vanillin and its homologous compounds by employing MoO₃-incorporated Co-BTC MOF-derived MoCoO_x@C