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Title: コークス中に添加された酸化鉄触媒のその場観察と反応機構
Other Titles: In Situ Observation and Reaction Mechanism of Iron Oxide Catalyst added to Coke
Authors: 山本, 雄一郎1 Browse this author
柏谷, 悦章2 Browse this author
三浦, 誠司3 Browse this author →KAKEN DB
西村, 勝4 Browse this author
加藤, 健次5 Browse this author
野村, 誠治6 Browse this author
窪田, 征弘7 Browse this author
国友, 和也8 Browse this author
内藤, 誠章9 Browse this author
Authors(alt): Yamamoto, Yuichiro1
Kashiwaya, Yoshiaki2
Miura, Seiji3
Nishimura, Masaru4
Katou, Kenji5
Nomura, Seiji6
Kubota, Masahiro7
Kunitomo, Kazuya8
Naito, Masaaki9
Authors(alt): Kunimoto, Kazuya8
Keywords: coke gasification
μ-X-ray CT
redox reaction
nondestructive analysis
high temperature laser microscope
Issue Date: 1-May-2010
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 96
Issue: 5
Start Page: 297
End Page: 304
Publisher DOI: 10.2355/tetsutohagane.96.297
Abstract: The performance of coke in blast furnace (BF) used to prefer a high strength and low reactivity, generally, while the high reactivity coke commonly has a low strength. To overcome the contradiction, it is important to develop a catalyst to increase the reactivity of carbon, so that the reaction mode can be changed from chemical reaction control to diffusion control. In this study, the reaction behavior of a ferro-coke was investigated, in which an iron oxide were added into a raw coal. Using high temperature laser microscope, in situ observation was carried out with the ferro-coke sample ground into tetragonal shape with 3.4×3.4×2.2 mm. Behavior of catalyst in coke was clarified through the in situ observations. It was found that the temperature at peak of reaction without catalyst was 1270°C, while the coke with catalyst showed two peaks at 900°C and 1270°C. It was considered that redox reactions would exist in the system. The mechanism of redox reaction is shown as Eqs. (1), (2) and (3), mainly. FeO(melt)+C = Fe+CO (1) FeO(melt)+CO = Fe+CO2 (2) Fe+CO2 = FeO(melt)+CO (3) On the other hand, the coke gasification was analyzed using high precision μ-X-ray CT. The optimum conditions for the image processing of data from the μ-X-ray CT were obtained through the comparison with the cross section image of the coke embedded in the resin. Because of the smaller sample than the previous study, higher precision analysis was able to carry out.
Description: 本文中の "Kazuya KUNIMOTO"は誤植
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: 三浦 誠司

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