To solve the problems in the operation of the static container attached to quench oil hydraulic cyclone system in the ethylene plant of SINOPEC-SK (Wuhan) Petrochemical Company Limited, such as small perforated mesh, insufficient strength, poor coke discharge and short operation cycle, some measures including equipment transformation and operation optimization were taken. The operation cycle of the static container attached to quench oil hydraulic cyclone system can reach 90 days, and good economic benefit can be achieved.