Results 11 to 20 of about 9,499,540 (295)
Research progress on degradative solvent extraction of low-rank coals [PDF]
Meitan kexue jishu, 2023 The degradative solvent extraction of low rank coal is the use of solvents to extract low rank coal under mild conditions, through the dehydration and multi-stage separation of the raw coal： the extraction products with no water content, no ash content ...
Zhu GUO +9 more
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Study of the Microstructural Characteristics of Low-Rank Coal under Different Degassing Pressures
Energies, 2022 Low-rank coal samples from the Xishanyao Formation in the southern Junggar basin of Xinjiang were processed under different negative pressures in order to examine the microstructural characteristics of low-rank coal reservoirs. The pore structures of low-
Yuanzhen Ma +4 more
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Biodesulphurisation of coal [PDF]
, 2001 The emission of sulphur oxides during the combustion of coal is one of the causes of an environmental problem known as acid rain. Biodesulphurisation technology applied as a method to remove sulphur before coal combustion was investigated in
Prayuenyong, P.
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Hydrothermal Treatment of Low Rank Coal [PDF]
, 2013 Abundance of low rank coal and increasing demand for energy provide an incentive for upgrading the low rank coal due to their high moisture and oxygen content. Various analyses were done to study the effect of the hydrothermal treatment on the physical and chemical structure of coal. Treatment of lignite coal results in a high reduction of moisture and
Sharifi, Mohammad
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Understanding the Role of Polyvinylpyrrolidone on Ultrafine Low-Rank Coal Flotation. [PDF]
ACS Omega, 2022 Effective regulation reagents are essential in low-rank coal flotation for improving the floatability of ultrafine particles. Polymer regulators have great potential in the surface modification of ultrafine coal particles.
Lin Q, Mei Y, Huang W, Zhang B, Liu K.
europepmc +2 more sources
Chemical Engineering Transactions, 2023 East Kalimantan is a province that has the largest coal reserves in Indonesia. One type of coal that is widespread and has low economic value as an energy source is low-rank coal.
Alwathan Sofian +4 more
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Frontiers in Earth Science, 2022 Based on the results of previous research on the fracture systems of reservoirs of middle- and low-rank coal, we took high-rank coal in the southern Qinshui Basin as the study object in this paper and summarize the characteristics of both macro- and ...
Yanhao Liu +4 more
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Kuangchan zonghe liyong, 2022 The energy structure characteristics of "rich coal, poor oil and less gas" in China determine the main energy status of coal resources, but its occurrence conditions are poor.
Zhihong Cheng
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Experimental study on the influence of middle and low rank coal functional groups on coal wettability [PDF]
, 2023 Coal seam water injection can effectively inhibit gas gushing in the process of coal mining, and its inhibition effect mainly depends on the wetting characteristics of coal seam.
Dongjie YAN +6 more
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Research Progress on Electro-Chemical Oxidation of Low-Rank Coal to Humic Acid
南方能源建设, 2022 [Introduction] With the vigorous development of renewable energy, clean and efficient utilization of low-rank coal not only improves resource utilization and economic value but also has great social significance.
Ruzhan BAI +6 more
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