著者
柿沼 伸良 相田 卓 佐藤 剛史 阿尻 雅文 新井 邦夫
出版者
一般社団法人 日本エネルギー学会
雑誌
石炭科学会議発表論文集 第38回石炭科学会議 (ISSN:24238295)
巻号頁・発行日
pp.123-126, 2001-11-13 (Released:2017-03-22)

Taiheiyo coal extraction experiments with supercritical water (SCW) and SCW-Phenol mixtures were conducted at 400℃ and 25MPa using a semi-continuous apparatus. With increasing the concentration of phenol, the extraction yield increased up to 80wt%-daf. Extraction yield of Yallourn coal extraction shows 80wt%-daf, while that of Adaro coal shows 65wt%-daf with the SCW-PhOH (80wt%) mixtures. Mechanism of the co-solvent reactive extraction was discussed based on the analysis of the products. This suggests the capping effect of phenol to prevent from polymerization of products.
著者
相田 哲夫 山本 宏貴 後藤 守史
出版者
一般社団法人 日本エネルギー学会
雑誌
石炭科学会議発表論文集 第46回石炭科学会議 (ISSN:24238295)
巻号頁・発行日
pp.16-17, 2009-11-26 (Released:2017-03-22)

It has been developed a reliable methodology to be able to elucidate such thermal behaviors as a plasticity, and carbonization of coal based on the electric property. In particular, the temperature dependency of electric conductivity observed in the heating range from 400℃ to 700℃ was satisfactory demonstrated a leaner relationship on the Arrhenius's equation suggesting that it could provide the kinetic parameters such as activation energy which are able to elucidate the mechanism of the electric conductivity induced in the macromolecular network structure of coal during a pyrolysis.
著者
田中 亮太 則永 行庸 工藤 真二 林 潤一郎 渡邊 裕章
出版者
一般社団法人 日本エネルギー学会
雑誌
石炭科学会議発表論文集 第50回石炭科学会議 (ISSN:24238295)
巻号頁・発行日
pp.62-63, 2013-10-21 (Released:2017-03-22)

This study focuses on the syngas production by partial oxidation of coke oven gas (COG). The reforming of COG, which is a multi-component mixture, in a turbulent flow includes various complex processes. Previous studies were limited to the results using simulated gas with a laboratory scale small reactor and a laminar flow. In this study, we developed a model which considers both chemical reactions and fluid dynamics for simulating the reforming characteristics of the actual COG in a bench scale relatively large reactor. The detailed chemical kinetic model which consists of more than 2000 elementary reactions and 257 species was reduced to 410 reactions and 47 sepcies for realizing coupling a finite rate reaction model with the turbulence model. Numerical simulations could fairly reproduce the reformed gas compositions and temperature profiles in a reformer.