文献类型：期刊文献

英文题名：Insights into pyrolysis product characteristics and carbon structure evolution of bituminous coal under high-temperature thermal shock

作者：Zhang, Haigang[1,2];Shen, Zhongjie[1,2];Zeng, Rubin[1,2];Liang, Qinfeng[1,2];Liu, Haifeng[1,2]

机构：[1]East China Univ Sci & Technol, Natl Energy Coal Gasificat Technol Res & Dev Ctr, POB 272, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China

年份：2024

卷号：371

外文期刊名：FUEL

收录：;EI(收录号：20242416228319);WOS:【SCI-EXPANDED(收录号:WOS:001252219400001)】；

基金：This study is supported by the National Natural Science Foundation of China (22378130), National Key R&D Program of China (2022YFC3902502-04), Key R&D Program of Xinjiang Uygur Autonomous Region (2022B03026-1) , the Fundamental Research Funds of the Central Universities (2022ZFJH004).

语种：英文

外文关键词：High -temperature pyrolysis; Thermal shock; Product distribution; Carbon nanostructure; Carbonization

摘要：The current investigation aims to reveal the pyrolysis characteristics and particle microstructure evolution of bituminous coal under the high-temperature thermal shock. In the experimental temperatures, the purification of carbon matrix in the coal char is a successive process linear on temperature. In contrast, the graphitization process of carbon structure existed a transition temperature (1600 degrees C). Specifically, the range of 1000-1500 degrees C is critical for the transformation of amorphous carbon to disordered graphite, but the growth of graphite microcrystals was minimally affected. While the range of 1600-1900 degrees C is critical for the formation of the graphite-like carbon structure. It is characterized by the release of defective structures such as oxygen-containing functional groups, and a significant increase in crystal size. Although beneficial for the subsequent study of carbon materials, the ordered graphite transformation led to the deactivation of char. The pyrolysis behavior study under thermal shock insight into the thermal behavior of coal char in high-temperature furnaces, as well as a new idea for the clean utilization of coal resources.