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Title: 高温域における球形コークスの反応にともなう組織変化と粉発生挙動
Other Titles: Change of Coke Structure and Behavior of Fine Generation during Gasification of Coke Sphere in High Temperature Region
Authors: 柏谷, 悦章1 Browse this author →KAKEN DB
高畑, 雅博2 Browse this author
石井, 邦宜3 Browse this author
山口, 一良4 Browse this author
内藤, 誠章5 Browse this author
長谷川, 博6 Browse this author
Authors(alt): Kashiwaya, Yoshiaki1
Takahata, Masahiro2
Ishii, Kuniyoshi3
Yamaguchi, Kazuyoshi4
Naito, Masaaki5
Hasegawa, Hiroshi6
Keywords: coke degradation
gasification of coke
fine generation
coke structure change
pore distriubution
porosity of coke
Issue Date: 1-May-2001
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 87
Issue: 5
Start Page: 259
End Page: 266
Publisher DOI: 10.2355/tetsutohagane1955.87.5_259
Abstract: According to the pulverized coal injection (PCI) into blast furnace (BF), the fine generation of coke in the lower part of BF especially around raceway has come to an important problem for stable operation. In this study, three kind of spherical cokes were used for gasification experiment simulated to the lower part of BF (1500-1700°C). Each cokes before and after experiments were examined the fine generation using I type tumbler for single particle which was developed by authors. The behavior of fine generation in high temperature can not predict from the conventional industrial tests such as CSR, DI, CRI and JIS-RI, because the industrial tests are carried out around 1000°C and the apparent reaction rate of coke consist of not only a chemical reaction rate but also a diffusion of gas in pore, depending on the reaction temperature. Especially in higher temperature than 1500°C, graphitization behavior will affect significantly on the apparent reaction rate. Then, structure change of coke after experiment was investigated using fluorescent resin and the change of porosity from the surface was clarified. The reaction zone from the surface to the inside was determined by computer aided image analysis. It was found that the amount of coke remained in the reaction zone was in good agreement with that of fine generated from coke.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 柏谷 悦章

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