Ensure Facility Robustness By Establishing Optimal Technology of Stage Axial Compressor

by Angga Yudistira P, Ilham Bimaskara

Publisher - PT KRAKATAU POSCO, Indonesia

Category - Engineering & IT

Blower is one of main facility in the ironmaking blast furnace system, as blast furnace using combustion to generate molten iron. There are 2 main components of blower, driving equipment and driven equipment. Driving equipment (motor) converts electrical energy to mechanical energy (rotation), and driven equipment (compressor) converts rotation into pressure and flowrate of air needed for blast furnace process. Blower supplies pressurised air needed for combustion process at blast furnace. Pressurised air is generated by multi-stage axial compressor with high mass flow rate. Axial compresor core component such as : rotor, stator, casing and coupling are critical for its purposes. As operating time passes on, blower needs to be overhauled regula rly to make sure the facility condition is reliable. This paper present theoritical, experiment and problem solving for core component of axial compressor, such as: stator and rotor gap measurement, detecting defect at the blade using NDT methods, casing bolt tightness, and coupling torque management. While overhaul, each critical component may faces several problem. When measuring the gap of rotor and stator blade, some gap may below or above standard. When check the defect which can be ignored or should be repaired immediately. And regarding bolt tightening that the bolt can be over tighten, under tighten or tighten by wrong methods.

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