Coal in the Global Energy Scene

Balat, Mustafa

doi:10.1080/15567240701758927

Cited by 37 publications

(8 citation statements)

References 8 publications

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“…During the past few decades, petroleum has been the main source of liquid fuels. On one hand, petroleum reserves are declining; on the other hand, coal reserve is the most abundant fossil fuel known in the world [1]. Coal is a source of fuel for more than half of the world's power plants for electricity generation.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Study and Thermal Decomposition Behavior of Lignite Coal

Heydari

Rahman

Gupta

2015

International Journal of Chemical Engineering

129

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A thermogravimetric analyzer was employed to investigate the thermal behavior and extract the kinetic parameters of Canadian lignite coal. The pyrolysis experiments were conducted in temperatures ranging from 298 K to 1173 K under inert atmosphere utilizing six different heating rates of 1, 6, 9, 12, 15, and 18 K min −1 , respectively. There are different techniques for analyzing the kinetics of solid-state reactions that can generally be classified into two categories: model-fitting and model-free methods. Historically, model-fitting methods are broadly used in solid-state kinetics and show an excellent fit to the experimental data but produce uncertain kinetic parameters especially for nonisothermal conditions. In this work, different model-free techniques such as the Kissinger method and the isoconversional methods of Ozawa, Kissinger-Akahira-Sunose, and Friedman are employed and compared in order to analyze nonisothermal kinetic data and investigate thermal behavior of a lignite coal. Experimental results showed that the activation energy values obtained by the isoconversional methods were in good agreement, but Friedman method was considered to be the best among the model-free methods to evaluate kinetic parameters for solid-state reactions. These results can provide useful information to predict kinetic model of coal pyrolysis and optimization of the process conditions.

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Section: Introductionmentioning

confidence: 99%

Kinetic Study and Thermal Decomposition Behavior of Lignite Coal

Heydari

Rahman

Gupta

2015

International Journal of Chemical Engineering

129

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“…Although the development of new energy is in the ascendant, coal still occupies the main position of energy utilization (Balat, 2009;Zhang et al, 2017;Song et al, 2018;Li et al, 2019;Song Z. et al, 2021). The large demand for coal has led to the development of mining technology from the aspect of mechanization and automation (Fan et al, 2020c;Liu et al, 2020b;Liu et al, 2020c;Peng et al, 2020;Jiang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Study on Optimization of the Dedusting Air Duct Layout in Coal Mine Roadway

et al. 2022

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Coal dust pollution in fully mechanized excavation faces not only affects the safety production of the coal mine but also threatens the health of workers. In order to reduce coal dust pollution and improve work conditions in mines, the layout of the dedusting-air duct in the dry dust collector and the influence of the duct position on the dust-producing area were studied. In addition, the effects of different cutting positions on dust removal efficiency were also studied. A full-scale model of mine roadway is established by CFD, and the influence of the position of the dedusting-air duct on dust diffusion and the distance between the tunneling head and the dedusting air duct on dust removal efficiency are studied. The results show that the higher the cutting position, the higher the dust concentration, and the longer the dust diffusion time in the coal roadway. When the distance between the dedusting-air duct and the tunneling head is set to 4 or 5 m, the dust removal efficiency is the highest. Moreover, the dust removal efficiency of the dry dust collector with the dedusting air duct arranged on the opposite side of the roadway is higher than that of the collector with the duct in the middle of the roadway.

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“…6 At present, coal is the major source of energy and continues to dominate as a main contributor for energy generation in developing countries. 7 Pakistan has huge coal reserves that nearly approach to 185 billion tons in its different provinces, especially in Sindh. It is estimated that the recoverable coal reserves in Pakistan are about 1.45 thousand Mtoe with total production capacity of 2.33 Mtoe per year.…”

Section: Introductionmentioning

confidence: 99%

“…Coal is one of the abundantly and evenly distributed fossil fuel (~65% of the total fossil fuels) around the globe, unlike oil and gas reserves which are only present in a fewer regions of the world 6 . At present, coal is the major source of energy and continues to dominate as a main contributor for energy generation in developing countries 7 . Pakistan has huge coal reserves that nearly approach to 185 billion tons in its different provinces, especially in Sindh.…”

Section: Introductionmentioning

confidence: 99%