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Production of High-Strength Coke from Low-Quality Coals Chemically Modified with Thermoplastic Components
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| Title: | Production of High-Strength Coke from Low-Quality Coals Chemically Modified with Thermoplastic Components |
| Authors: | Tsubouchi, Naoto Browse this author →KAKEN DB | | Naganuma, Ryo Browse this author | | Mochizuki, Yuuki Browse this author →KAKEN DB | | Hayashizaki, Hideyuki Browse this author | | Shishido, Takahiro Browse this author | | Sharma, Atul Browse this author |
| Keywords: | coal | | coke | | chemically modified | | thermoplastic components | | coke strength |
| Issue Date: | Jan-2021 |
| Publisher: | 一般社団法人 日本鉄鋼協会 (The Iron and Steel Institute of Japan) |
| Journal Title: | 鉄と鋼 : Journal of the iron and steel institute of Japan |
| Volume: | 107 |
| Issue: | 1 |
| Start Page: | 15 |
| End Page: | 23 |
| Publisher DOI: | 10.2355/tetsutohagane.TETSU-2020-052 |
| Abstract: | In order to produce high-strength coke from low-quality coals, noncovalent bonds between O-functional groups in coal were cleaved by pyridine containing HPC pyridine soluble and HPC-derived thermoplastic components were introduced into the pores formed by swelling; thus, the synergistic effect during carbonization of the suppression of cross-linking reactions and the fluidity amplification due to close placement of coal and thermoplastic components was investigated. When HPC was extracted with pyridine, a decrease in O-functional groups was observed in the pyridine-soluble and pyridine-insoluble components. When HPC was extracted with MeOH, on the other hand, O-functional groups in HPC selectively moved into the soluble components. When non- or slightly-caking coal was chemically-modified with the prepared HPC pyridine-soluble components by utilizing the solvent-swelling effect of pyridine, the fluidity improved compared with the coals physically mixed with the soluble components or HPC. On the other hand, the fluidity of the chemically-modified sample with the MeOH-soluble components hardly changed from that of the original sample, and no effect of the modification with the thermoplastic component was observed. Furthermore, it was clarified that higher-strength coke can be produced from the chemically-modified sample with the HPC pyridine -soluble components than from the original coal or the physically mixed coal with the soluble components. The contraction behavior during carbonization of the chemically-modified sample with the soluble components and that of the original coal was investigated; as a result, a large difference was not observed between these two. Thus, it was found that high-strength coke can be produced from low-quality coals by the present method. |
| Rights: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/81340 |
| Appears in Collections: | エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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