DYNAMIC EFFECTIVE DIFFUSIVSTY WHEN APPLIED TO THE PRESSURE INCREASE DURING REACTION FOR MULTICOMPONENT GASEOUS SYSTEMS WITHIN A POROUS SOLID:REDUCTION OF IRON-OXIDE POWDER BED BY HYDROGEN-INERT GAS MIXTURES AT 900°C
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概要
- 論文の詳細を見る
α-Hematite powder of 8.1 μm in average diameter was packed in a quartz tube and was reduced by feeding pure hydrogen toward the upper surface of the packed bed at 900°C and the pressure increase within the bed was measured. Midway through the reduction, hydrogen-inert gas mixtures were fed instead of pure hydrogen and the variation of the pressure increase ΔP within the bed with increasing mole fraction of inert gas in feed gas, xI, 0, was investigated. Nitrogen, argon, and helium were used as the inert gas and it was found that the relationship between ΔP and xI, a varied with each inert gas. To interpret those phenomena, the concept of the multicomponent dynamic effective diffusivity is proposed. It will make the nonisobaric analysis of solid-multicomponent gas reactions possible.
- 公益社団法人 化学工学会の論文
著者
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Ishida Masaru
Research Laboratory Of Resources Utilization Tokyo Institute Of Technology
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SHIRAI TAKASHI
Research Laboratory of Resources Utilization
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AKEHATA TAKASHI
Research Laboratory of Resourses Utilization, Tokyo Institute of Technology
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NAKANO YOSHIO
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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