Abstract:

Cracking gas compressor is the core of ethylene plant, and its ability to maintain efficient operation is critical to the safe and stable operation of ethylene plant. This paper focuses on the problems that had occurred since the startup of a 1000 kt/a ethylene plant, analyzes the causes of these problems, and takes reasonable measures to solve the problems including the full opening of low pressure control valve, the over high SiO2 content of boiler feed water, the increase in shaft displacement due to fouling, the high exhaust steam temperature during turbine startup, the breakdown of mist eliminator of separation tank, the high level of two-stage suction tank and the failure of critical instrument and regulating valve, thus guaranteeing the long period and stable operation of the ethylene plant.

Key words: ethylene plant')">

ethylene plant, compressor, long period, corrective actions