| 摘要 |
PURPOSE:To improve the efficiency of a hot stove and to stabilize the operation of a blast furnace by using ceramic tubes in a heat exchanging section and incorporating a direct heat exchanging system which permits continuous blasting without change-over. CONSTITUTION:A hot stove is constituted of a combustion chamber 12 which generates heating gas, an introducing chamber 18 for heating gas which is provided in the upper part, a discharging chamber 22 for heating gas which is provided in the lower part, and many ceramic tubes 26 which communicate the chamber 18 and the chamber 22. The spaces between the tubes 26 are used as flow passages for the air to be heated, thus forming a heat exchanging chamber 16. The air fed through a cold air pipe 28 from a fan 27 enters the flow passages between the tubes 26 and is heated while the air passes in the flow passages. The heated air is blown continuously through an annular tube 32 and a tuyere 34 into a blast furnace 2. |
