How to achieve process anti-corrosion for high-temperature heat exchange equipment?
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In high-temperature heat exchange equipment, the temperature of the medium is around 320 degrees; the tube bundles as well as the inlet and outlet pipelines suffer severe corrosion, especially at the welds. Material selection for corrosion protection is one aspect – but how can process-related measures be employed to prevent corrosion?
It mainly relies on material selection; generally, a 316L material is required at this temperature, with few other anti-corrosion methods available.
1. Simply in terms of temperature resistance, carbon steel is sufficient, as it can withstand temperatures of around 350 degrees℃； 2. For ordinary corrosion issues, 304 is recommended; it offers excellent temperature resistance and corrosion protection ； 3. If the process medium contains special corrosives, it is recommended to consult the corrosion prevention manual to select appropriate materials based on the specific types of corrosives.
There are specialized high-temperature corrosion-resistant repair materials; give them a try
To analyze the causes of corrosion, stress corrosion can be addressed through heat treatment
Anticorrosion measures should be taken at the manufacturing level. Analyze the properties of the medium and the causes of corrosion.
Stainless steel is chosen as it is generally resistant to corrosion