College of Chemical Engineering, North China University of Science and Technology
Jiangsu Yonggang Group Corporation Ltd.
Handan Iron and Steel Group Corporation Ltd.
College of Science, North China University of Science and Technology

利用热萃取低阶煤制备无灰煤并将其应用至配煤炼焦领域,对高效利用低阶煤资源与改善冶金焦炭质量均具有重要的意义。结合无灰煤的制备原理从无灰煤制备的影响因素、无灰煤的高热塑性影响因素、无灰煤配煤炼焦对炼焦煤热塑性和焦炭质量的影响等方面综述无灰煤在配煤炼焦领域的应用研究进展。研究结果表明,极性溶剂的溶胀作用、萃取温度、热溶时间及固液比均对无灰煤制备有影响;在无灰煤的萃取中,溶剂与煤发生作用并分散煤的结构,在热解过程中其结构发生改变和重组,极性溶剂的溶胀作用更强则可使煤结构更分散且萃取效果更好;极性溶剂的溶胀作用、较高的萃取温度、恰当的热溶时间及固液比可使无灰煤形成一定的芳香结构,使其具有良好的热塑性,但仍需进一步研究无灰煤的结构与在成焦过程中的作用机理及其高热塑性机制。无灰煤在配煤炼焦领域的应用可有效提高炼焦煤的热塑性以及改善焦炭的碳质结构、气孔结构和光学组织结构,从而对焦炭质量有明显的提升作用。

The preparation of Hypercoal by thermal extraction of low rank coal and its application to coal blendingand coking are of great significance for the efficient utilization of low rank coal resources and the improvement of met⁃allurgical coke quality. Combined with the preparation principle of Hypercoal, the research progress on the applica⁃tion of Hypercoal in the field of coal blending and coking is summarized in terms of the influencing factors of Hyper⁃coal preparation, the influencing factors of the high thermoplasticity of Hypercoal, and the influence of Hypercoal co⁃king on the thermoplasticity of coking coal and the quality of coke. The results showed that the swelling effect of polarsolvents, extraction temperature, thermal dissolution time and solid⁃liquid ratio all had an effect on the preparation ofHypercoal; in the extraction of Hypercoal, the solvent interacts with the coal and disperses the coal structure,which changes and reorganizes during pyrolysis, and the stronger swelling effect of polar solvents makes the coalstructure more dispersed and the extraction effect better; the swelling effect of polar solvents, higher extraction tem⁃perature, proper thermolysis time and solid⁃liquid ratio can lead to the formation of a certain aromatic structure of theHypercoal, which makes it have good thermoplasticity, but still requires further research on the structure of the Hy⁃percoal and the role of the mechanism in the coking process and its high thermoplasticity mechanism. When appliedin the field of coal blending and coking, Hypercoal can effectively improve the thermoplasticity of coking coal, im⁃prove the carbonaceous structure, pore structure and optical texture of coke, and thus have a significant effect on thequality of coke.

中国博士后科学基金面上资助项目(2020M671408);河北省自然科学基金资助项目(E2018209310);河北省高等学校科学技术研究青年基金资助项目(QN2020217)

侯彩霞, 付佳旭, 程欢, 等. 无灰煤配煤炼焦对热塑性与焦炭质量的影响研究进展 [ J]. 煤质技术,2023, 38 (6): 28-34.

HOU Caixia, FU Jiaxu, CHENG Huan, et al. Research progress on the influence of Hypercoal blending andcoking on thermoplasticity and coke quality [J]. Coal Quality Technology, 2023, 38 (6): 28-34.