Results 81 to 90 of about 496,578 (236)
Analysis of Detoxification Effect of Benzo[ a] pyrene in Polymer Modification ofthe Medium Temperature Coal-tar Pitch [PDF]
Zhengzhou Daxue xuebao. Gongxue banIn order to reduce the content of carcinogenic polycyclic aromatic hydrocarbons in coal asphalt and realize its green application, polyurethane monomer, trioxymethylene, polyethylene glycol, divinyl benzene and epoxyresin were respectively used to react ...
LI Ruixia +4 more
doaj +1 more source
Energy Science &Engineering, EarlyView.This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley +1 more source
Subcritical Extraction of Coal Tar Slag and Analysis of Extracts and Raffinates
Applied SciencesCoal is an important energy source for the development of modern society. The processing and utilization of coal have brought significant economic benefits for people, but at the same time, a large amount of coal-based solid waste is produced.
Xiaohua Wang +2 more
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Energy Science &Engineering, EarlyView.This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu +4 more
wiley +1 more source
Objective Tar-rich coal, a type of unique unconventional oil and gas resource that integrates coal, oil, and gas, can be transformed into tar, combustible gases, and semi-coke solid fuels with high added value through in-situ pyrolysis. Therefore, the in-
Gang, CHENG +3 more
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Meitan xuebaoAs a strategic coal-based oil and gas resource, tar-rich coal is abundant in China. The development of oil and gas resources rich in oil and coal is of great strategic value to ensure China’s energy security and help the “double carbon” goal and energy ...
Jun DENG +10 more
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Fire and Materials, EarlyView.ABSTRACT Timber plays a fundamental role in the fire performance of historic building components, where ageing and environmental exposure can markedly influence its physical and chemical properties. This study presents an experimental investigation of the fire behaviour of Ocotea sp.
João Vitor Lopes Ferreira +4 more
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Performance of carbon foams based on heavy tar produced by tar-rich coal pyrolysis
Objective Preparing graphitized foam materials using heavy tar produced by the pyrolysis of tar-rich coals plays a significant role in the high-value utilization of tar-rich coal resources.
Qi, WANG +5 more
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Research progress of in-situ pyrolysis technology for tar-rich coal
Meitan xuebaoChina has abundant resources of tar-rich coal, and the in-situ pyrolysis extraction of oil and gas can not only achieve efficient, clean, and low-carbon utilization of tar-rich coal, but also alleviate the external dependence of oil and gas, which is one
Miao WANG +8 more
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