The cold and hot crude syngas mixed tee at the shell side outlet of the converter inlet heater of a converter has been severely eroded.The perforation and leakage at the outlet end of the tee endanger the safe operation of the device.The turbulent flow phenomenon makes the saturated crude syngas prone to liquid phase.CO2 and H2S in the gas phase dissolve in water to form carbonic acid corrosion and wet H2S corrosion,which makes the tee corrosion and leakage.There are obvious streamline grooves at the bottom of tee outlet caused by high velocity.This paper uses computer software to compare and analyze the flow field of 90° reducer tee and 45° reducer lateral tee.Finally,three measures are proposed to ensure the safe operation of the device:replacing tee materials,increasing heat tracing pipeline and changing 90°reducer tee to 45°reducer lateral tee.
维普
万方数据
