Abstract: Aiming at the problem of large amount of ice hanging on the outside of the silencer upper wall caused by the steam discharge in ethylene plant in winter, the silencer upper wall is optimized. This paper introduces the structure of silencer and analyzes the causes of ice accumulation. Based on the analysis, it takes such measures as adding auxiliary ears to the upper wall of silencer. This effectively solves the problem of ice hanging on the wall of silencer caused by steam discharge in ethylene plant in winter, eliminates the risk of personal injury caused by ice falling from high places, reduces the probability of production fluctuation caused by abnormal faults of instrument and electrical equipment, and ensures the long-term safe and stable operation of the ethylene plant.

Key words: steam discharge, silencer, winter icing, revamp