VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN VON REDUZIERENDEM GAS

摘要

In a method and apparatus for manufacturing reducing gas by utilizing a slag-tap type furnace wherein a solid carbonaceous substance such as coal and coke is charged into the furnace through the top thereof, steam and oxygen or oxygen-rich air are blown into the furnace through a tuyere at the hearth, the gas produced is discharged from the furnace top and the ash components of the ash substance are discharged from the furnace bottom as a molten slag, a liquefied high calorie substance such as heavy oil, asphalt and plastics is blown into a region of the furnace in which the solid carbonaceous substance is heated to a temperature of from 600 DEG to 1200 DEG C. thus increasing the heat quantity of the gas produced. The efficiency of the furnace can be improved by separating low temperature volatile substances from the gas produced and admitting the separated low temperature volatile substances into the furnace together with steam and oxygen or oxygen-rich air.