The service life of stainless steel heat exchange tubes is often affected by the use conditions. In different scenarios, its service life has a wide range. The following are real cases collected online:
1. Ultra-long standby (15-20 years)
Scenario: Pasteurization in food factories, the medium is pure water + steam (temperature <100℃)
Operation: Monthly citric acid cleaning + annual passivation treatment
2. Normal life (8-12 years)
Scenario: Cooling tower in chemical plant, the medium contains trace chloride ions (temperature 80-150℃)
Operation: Use 316L material + quarterly high-pressure water washing
3. Sudden death warning (<1 year)
Scenario: Flue gas heat exchange in coastal power plants, the medium contains seawater + sulfide (temperature >200℃)
Overturning operation: Misuse of 304 material + welding without pickling + never descaling