酸素, 重油の多量併用吹き込みにおける適正操業範囲について
1974 年 60 巻 8 号 p. 1078-1083
詳細
1974 年 60 巻 8 号 p. 1078-1083
Simultaneons injection of oxygen and oil in large quantity is likely to cause slipping and other irregularities in blast furnace, if the choice of each quantity is inappropriate.
For this reason, it is necessary to treat this problem quite carefully both from theoretical and operational points of view. To solve this problem the idea of appropriate operational range is introduced, which takes into account the limitation of heat exchange of gas and burden, theoretical temperature at tuyeres and perfect combustion of oil. Fukuyama No 2 BF has been operated by applying these consideration.
The operational results of 380 kg/t HN coke ratio and 78 kg/t HM oil ratio have been obtained by the enrichment of oxygen of 25%.
The furnace is operated, at present, under good condition with 3.8% oxygen enrichment, which proves that the idea of appropriate operational range is very beneficial in injecting oxygen and oil in large quantity.
