高炉内におけるコークスガス化反応挙動におよぼすコークス反応性,反応温度の影響

概要

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Coke degradation has a great influence on the blast furnace operation. Coke gasification behavior with CO_2 gas was investigated by coke gasification experiments and the mathematical model calculation. Cylindrically shaped coke was exposed to the CO/CO_2/N_2 atmosphere, at the temperature of 1473K or 1773K, then it was filed layer by layer to measure the gasification behavior. Coke gasification occurred preferentially at the surface of the coke with higher temperature or higher coke reactivity. Mathematical model of coke gasification clarified that the specific surface area of fine pores and the temperature had a great influence on the coke gasification behavior, which was expressed as α, the gasification ratio gradient inside the coke lump.
社団法人日本鉄鋼協会の論文