Reaction Behavior of Coke Lump in Raceway of Blast Furnace with Pulverized Coallnjection
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概要
- 論文の詳細を見る
Reaction behaviors of a coke lump in raceway of blast furnaces which pulverized coal injection technology was adopted were studied by using a horizontal pulverized coal reactor. In the experiments two types of coke lump were used as samples. In the experiments, the reaction behaviors of coke lump were continuously observed by an 8 mm video camera system. Mass change of the coke lump was weighed at each exposure time, and surface temperature of the coke lump was also continuously measured by a two-color pyrometer. Additionally, both the reacting coal particles and gas were sampled and analyzed, and the deposition on the coke surface was also analyzed. In order to elucidate the effect of ash particles in coal on the coke reaction, LPG was also supplied as a fuel into the reactor instead of coal. As a result, mass loss of coke in the coal combustion is larger than that in the LPG combustion. When the coal particles collide with the coke at the surface, the ash particles easily stick there and spherical molten ash is formed on the surface. For the LPG combustion, only small spherical molten ash resulted from the coke is formed. Those results suggest that ash particles of the coal may enhance coke degradation due to chemical interactions between coal ash and coke.
- 社団法人 日本鉄鋼協会の論文
- 2000-08-15
著者
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Naruse Ichiro
Department Of Ecological Engineering Toyohashi University Of Technology
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Higuchi Atsushi
Department Of Integrated Biosciences Graduate School Of Frontier Sciences The University Of Tokyo
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Nakayama Katsuya
Department Of Ecological Engineering Toyohashi University Of Technology
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Higuchi Atsushi
Department Of Ecological Engineering Toyohashi University Of Technology
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