| Project/Area Number |
59850141
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
有機工業化学
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| Research Institution | Research Institute of Industrial Science, Kyushu University |
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Principal Investigator |
MOCHIDA Isao Res. Inst. Ind. Sci., Kyushu Univ., Professor, 生産科学研究所, 教授 (20037758)
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| Co-Investigator(Kenkyū-buntansha) |
SAKANISHI Kinya Res. Inst. Ind. Sci., Kyushu Univ., Research Assistant, 生産科学研究所, 教務員 (60183365)
KORAI Yozo Res. Inst. Ind. Sci., Kyushu Univ., Research Assistant, 生産科学研究所, 助手 (50122693)
FUJITSU Hiroshi Res. Inst. Ind. Sci., Kyushu Univ., Assistant Professor, 生産科学研究所, 助教授 (00038605)
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| Project Period (FY) |
1984 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 1986: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1985: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1984: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | Anisotropy / Formed Coking / Blustfurnace Coke / Copreheattreatment / Coal / 石炭 / 熱間強度 |
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| Research Abstract |
The co-preheattreatment of non-fusible and slightly fusible coals with A240 and hydrogenated A240 under high temperature-short contact-time conditions around 500 ゜C has been examined in an attempt to produce a formed coke with better anisotropic development. These conditions shortened the copreheat-treatment time and provided better anisotropic development in the resultant coke after carbonization. Effectiveness of short contact-time has been examined interms of the extent of depolymerization of coal molecules suitable for anisotropic development, this being related to coal liquefaction under similar conditions.
The carbonization properties of weathered bituminous coals were compared with those of the non-weathered coals. The weathering decreased the fusibility of the coal to leave more basic anisotropy and to diminish the size of the majority of the anisotropy in the resulting coke. On the other hand, more domain and flow domain textures developed. Co-carbonization with a petroleum pitch additive was found effective enhancing the fusibility of the coal and anisotropic development in the coke. Formed coking of the weathered coal by means of copreheat-treatment with the additive, provided an anisotropic, dense and strong coke of uniform size. For the weathered coal, the optimum copreheat-treat-ment was shorter than that using the non-weathered coal, indicating high coking reactivity of the weathered coal. The transferable hydrogens from the additive are rapidly consumed by the oxygen containing groups of the weathered coal.
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