Reasons for the cracking of heat exchange tubes
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The propylene stripping tower is equipped with a reboiler; the tube bundle is made of low-temperature carbon steel, 09MnD, and has been normalized. Propylene flows in the shell side at the bottom of the tower, while steam at 0.35 MPa flows in the tube side. What material upgrade would be better for preventing tube failure? Can stainless steel be used? Design temperature: –45
Due to substandard materials, people buy copper pipes if they can afford them; it’s for professional refrigeration purposes
Based on the location and shape of the crack, it is due to significant thinning at the elbow section, resulting in overpressure cracking.
Is the wear caused by an excessive amount of particulates in the medium?
It’s the extreme temperature difference between hot and cold that causes the pipes to crack
Thinning, cracking due to overpressure, or damage from freezing!