APPARATUS FOR SUPPLYING PULVERIZED COAL TO BLAST FURNACE

摘要

PURPOSE: A supplying device for pulverized coal is provided to have a structure which is touched to pure oxygen which is discharged from the pure oxygen supply lance in the inner circumference part and to increase the contact area of pulverized coal with oxygen or the pure oxygen. CONSTITUTION: A supplying device for pulverized coal comprises a pulverized coal injection lance(110) and a pure oxygen supply lance(120). The pulverized coal injection lance is connected in a winnower of a blast furnace and is provided to blow the pulverized coal(20) inside the blast furnace. The pure oxygen supply lance is installed in the inner side of the pulverized coal injection lance and is provided to blow the pure oxygen(30) inside the blast furnace. The pulverized coal which is discharged from the pulverized coal injection lance increases the contact area of oxygen and the pure oxygen of the pure oxygen supply lance and increases combustion efficiency of the pulverized coal. The pure oxygen supply lance is installed inside the pulverized coal injection lance in order to form the same axis with the central axis of the pure oxygen supply lance and the central axis of the pulverized coal injection lance.