Reasons for corrosion of the deoxygenation water pump in hydrogen production units using catalytic dry gas and coking dry gas
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Dear sea friends: In our dry gas hydrogen production plant, the impeller of the deoxygenation water pump starts to corrode after about a year of operation. Initially, we suspected that oxygen corrosion was the cause, but the parameters of our deoxygenation water are also within acceptable limits, being less than 15 ug. What other factors could possibly lead to this issue? Additionally, what kind of materials are not susceptible to oxygen corrosion?
We have been running this for 10 years and such a situation has never occurred. Are you using centrifugal pumps?
Do you also operate gas-based hydrogen production plants? What is the material of the pump?
Are you sure it’s corrosion rather than cavitation?
The material is carbon steel; we produce hydrogen from dry gas