BLAST FURNACE TOP PRESSURE RECOVERY TURBINE OPERATING METHOD AND BLAST FURNACE TOP PRESSURE RECOVERY TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a blast furnace top pressure recovery turbine operating method capable of preventing stress corrosion crack effectively even against change in shape such as design change.;SOLUTION: When a space enclosed by the end surface of a rotor, a casing, a shaft sealing member and a rotational shaft provided in a blast furnace top pressure recovery turbine is defined as space A, the pressure of the space A is defined P_A, and the pressure of the blast furnace gas flowing so that the blast furnace gas is in contact with rotor blades arranged on the outer periphery of the rotor is defined as P_T, monitoring is performed so that P_A is greater than P_T, and the pressure is adjusted if necessary.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2020,JPO&INPIT