| 摘要 |
PURPOSE:To eliminate uneven distribution of fine powdered coal in a blast furnace and to improve the durability of inject introducing pipe by arranging a distributor to the introducing pipe connecting with a feeder, which feeds the fine powdered coal in a vessel in a fixed quantity, and further connecting with plural tuyeres through branching pipes. CONSTITUTION:A volumetric feed type feeder 7 is arranged as connecting with the upper part of discharging hole 5 of storing pressure vessel 2 for fine powdered coal. The introducing pipes 11a, 11b... are arranged as connecting with the feeder 7 and two-way distributors 12a, 12b... are connected with each end part of the introducing pipe. One pair of branching pipes 13a, 13'a... are branched from each distributor 12a, 12b... and each one pair of branching pipes 13a, 13'a are connected with the tuyeres 14a, 14'a in the blast furnace B. The fine powdered coal in the vessel 2 is distributed in the feeder 7 in a fixed quantity by the pressure gas flowed from a pressure gas source 8 and uniformly fed to the introducing pipes 11a, 11b and uniformly supplied in the blast furnace B without uneven distribution by the distributors 12a, 12b and the branching pipes 13a, 13'a. |
