Does propylene carbonate corrode compressor pipes?
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We currently have a propylene decarburization unit; there is a propylene odor and liquid present at the fourth and fifth stages of the compressor. The pipes exiting stage five of the compressor are all thin, especially at the elbow sections. Could this be caused by propylene corrosion?
Pure carbon propylene liquid causes little corrosion to equipment and pipelines, but diluted carbon propylene liquid can corrode carbon steel pipelines and equipment!
When the concentration of carbon propyl liquid is low, it tends to decompose and produce corrosive substances; the corrosion is likely caused by the carbon propyl liquid being carried away.
If it’s just the elbow section, it’s mainly caused by erosion! Propylene carbon itself has very low corrosivity; corrosion increases under conditions of hydrolysis and the presence of hydrogen sulfide!