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日本エネルギー学会誌 Vol. 84 (2005), No. 11

ISIJ International
belloff
オンライン版ISSN: 1882-6121
冊子版ISSN: 0916-8753
発行機関: The Japan Institute of Energy

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日本エネルギー学会誌 Vol. 84 (2005), No. 11

石炭表面の親水・疎水度がカラム浮選成績に及ぼす影響

関 根泰, 佐藤 大介, 山口 大輔, 菊地 英一, 松方 正彦

pp. 917-922

抄録

Continuous column flotation is one of an economical coal cleaning processes. In this study, we exam-ined the effect of hydrophilicity and hydrophobicitiy of coal surface on the continuous column flotation processes. We found that Wallarah coal was most suitable coal for the coal cleaning by the column flotation. From a static separation of film flotation, we found that the floatability of coal particle strongly depended on the hydrophilicity and hydrophobicity of coal surface. On the other hand, the trend of demineralization and the ratio of carbonaceous recovery could be predicted by the observation of methylene-blue adsorption test.

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石炭表面の親水・疎水度がカラム浮選成績に及ぼす影響

エネルギー用サトウキビからの食糧共存型バイオマスエタノール生産

小原 聡, 寺島 義文, 杉本 明, 早野 達宏, 氏原 邦博, 下ヶ橋 雅樹, 迫田 章義

pp. 923-928

抄録

Competition for raw materials between sugar and ethanol usually occurs when biomass ethanol is produced from sugarcane. In order to overcome this critical problem, numerous studies have investigated the production of ethanol from two by-products of sugarcane: molasses and bagasse. However, there have been no previous attempts to improve the relevant properties of sugarcane, such as its growth rate, sugar content or fiber content.
The objective of the current work was to develop a novel system for high-yield biomass ethanol production to support existing methods of sugar production. A system for the simultaneous production of sugar and biomass ethanol was designed by employing selected sugarcane strains that were developed specifically for this process, including 95GA-24, 95GA-27 and NiTn18.
We ran productivity simulations using data from the novel sugarcane strains and compared the per-formance of the new process with that of conventional methods. Our results confirmed that sugar produc-tion could be maintained at present levels while three-times more biomass ethanol could be generated com-pared with the conventional processes. In addition, we demonstrated that a carbon-neutral process could be achieved using the new system.

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エネルギー用サトウキビからの食糧共存型バイオマスエタノール生産

ごみ固形燃料 (RDF) の炭化システムと炭化物利用

行本 正雄, 山口 安幸

pp. 929-934

抄録

This paper introduces swinging-type waste carbonizing technology, and an energy saving process developed by combining a carbonizing system with refuse derived fuel (RDF) production from municipal waste. Applications of carbonized products are also reported. It is concluded that the carbonized products produced from RDF by this carbonizing system have uniform properties. Formaldehyde and other harmful organic substances are decomposed by the high temperature carbonizing treatment, and safe, high quality carbonized products are obtained. The JFE group is actively developing new applications of the carbonized products in various fields such as soil conditioners, adsorbents, coke substitute in iron making, and insulat-ing material.

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ごみ固形燃料 (RDF) の炭化システムと炭化物利用

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