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AssigneeSumitomo Metal Industries, Ltd.
InventorsShozo Okamura, Hidemasa Nakajima, Katsukiyo Marukawa, Shoji Anezaki, Takeyuki Hirata
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In a process for the gasification of solid carbonaceous material such as coal, powdered coal is top-blown onto a molten iron bath stored in a furnace through a non-submerged lance toward a hot spot formed by means of a jet of oxygen and steam top-blown through a non-submerged lance, coal being blown by means of a carrier gas, and flux is optionally added into the furnace by the lump or blown toward the hot spot, thereby the coal being gasified. The ratio L/L.sub.o of the depression depth L of the molten iron bath to the molten iron bath depth L.sub.o is maintained from 0.05 to 0.15, and the blowing velocity of the solid carbonaceous material is maintained from 50 to 300 m/sec so as to suppress the forming of an adhered mass in the furnace. A stirring gas is blown through a bottom nozzle to stir the molten iron bath.
A process for gasification of solid carbonaceous material in which pulverized solid carbonaceous material is top-blown onto a molten iron bath stored in a furnace through a non-submerged lance toward a hot spot formed by means of a jet of a gasifying agent comprising at least oxygen, the gasifying agent is top-blown through a non-submerged lance, the solid carbonaceous material being blown by means of a carrier gas, thereby the solid carbonaceous material being gasified, wherein the improvement comprises that the ratio L/L.sub.0 of the depression depth L of the molten iron bath to the molten iron bath depth L.sub.0 is maintained from 0.05 to 0.15, and the blowing velocity of the solid carbonaceous material is maintained from 50 to 300 m/sec so as to suppress the forming of an adhered mass in the furnace, and a stirring gas is blown through at least one nozzle which opens below the level of the molten iron bath to stir the molten iron bath.
Dependencies are inferred from the claim text.