Evaluation on explosion characteristics and parameters of pulverized coal for low-quality coal: experimental study and analysis

Yan, Hongyuan; Nie, Baisheng; Peng, Chao; Liu, Peijun; Wang, Xiaotong; Yin, Feifei; Gong, Jie; Wei, Yueying; Sha, Lin; Gao, Qiang; Cao, Mingwei

doi:10.1007/s11356-021-17170-6

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…The interplay of these multifaceted considerations mandates a comprehensive and nuanced approach toward the energy transition that accommodates the diverse needs and challenges of different regions and socio‐economic strata. Among select research agendas including underground gasification of coal for enhanced H 2 production 7–9 and subsequent CO 2 storage and sequestration, 10,11 establishing in situ clean power plants based on controlled pulverized coal detonation may hold prominent promise 12,13 …”

Section: Introductionmentioning

confidence: 99%

Coal dilemma: Is in situ clean power plant a way out?

Nie,

Jiang,

Liu

et al. 2024

EcoEnergy

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The global shift toward cleaner energy sources, driven by carbon neutrality goals and climate change urgency, faces a paradoxical rise in coal consumption despite efforts to expand alternative energies. Economic disparities drive reliance on coal, particularly in underdeveloped regions where affordability and accessibility dictate energy choices. To address this, innovative approaches such as harnessing controlled pulverized coal detonation for in situ clean power plants are proposed. These plants offer compact, efficient, and sustainable energy generation with reduced emissions and minimal environmental impact. In addition, a comparison of costs, efficiency, and environmental impact with conventional methods showcases the potential of this novel technology to transform coal‐based energy into a green and viable solution.

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Section: Introductionmentioning

confidence: 99%

Coal dilemma: Is in situ clean power plant a way out?

Nie,

Jiang,

Liu

et al. 2024

EcoEnergy

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“…The main quantitative measure of the fire and explosion hazard of solid fuels in pulverized fuel systems is the explo siveness factor. The method for its calculation varies slightly from country to country, but in all cases, it takes into account the volatile yield, ash content, lower calorific value, and ele mental composition of the fuel [6,7]. The numerical value of the factor, as well as the fire and explosion hazard in pulver ized coal systems, increases in the anthraciteleanbitumi noussubbituminous coal series.…”

mentioning

confidence: 99%

Converting Slovianska TPP with the central coal pulverizing plant from anthracite to sub-bituminous coal

Сhernyavskyy¹,

Provalov²,

Miroshnychenko³

et al. 2023

Nauk. visn. nat. hirn. univ.

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Purpose. To develop scientific foundations and technical solutions and to implement the converting of the anthracite boiler of the 800 MW unit of Slovianska TPP with central coal pulverizing plant to sub-bituminous coal combustion with maximum use of existing equipment, without stopping the unit’s operation. Methodology. Theoretical and calculational studies on the processes of coal drying and pulverizing at the central coal pulverizing plant. Calculational justification of technical solutions to eliminate the risk of pulverized coal ignition in the pulverized coal supply system and in the boiler unit burners. Trial tests at the coal pulverizing plant and boiler unit. Findings. The technological features of coal pulverizing plant with steam panel dryers designed for anthracite and the peculiarities of the drying process of an individual coal particle were analyzed. It is substantiated that coal drying at the first stages takes place according to the “wet bulb thermometer” mechanism, and safe conditions for sub-bituminous coal pulverizing are determined and confirmed by tests. Technical solutions to eliminate the risk of pulverized coal ignition in the pulverized coal supply system and in the boiler burners were calculated and implemented, which allows the combustion of different coal grades (anthracite, sub-bituminous coal and their mixtures) without changing the composition of the air duct equipment and burners, using only operational measures. Originality. For the first time, it was proved that coal drying at the first stages takes place according to the “wet bulb thermometer” mechanism, and safe conditions for sub-bituminous coal pulverizing at the central pulverizing plant with steam panel dryers and unventilated ball drum mills were determined. Practical value. Technical solutions were developed and implemented to convert the anthracite boiler of the 800 MW unit of Slovianska TPP with a central coal pulverizing plant to sub-bituminous coal burning with maximal use of existing equipment, without stopping the unit’s operation, including safe modes of sub-bituminous coal pulverizing, as well as pulverized coal of various coal grades and their mixtures feeding and combustion. As a result of the implementation of the developed technical solutions, the 800 MW power unit of Slovianska TPP became the first unit in the world capable of using anthracite and sub-bituminous coal separately or in the form of mixtures of a wide range of compositions.

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