Boiler Corrosion Problems in Paper Making Line
Corrosion within a boiler system manifests as dangerous pitting or ulcerative damage in areas like the economizer, steam drum, and downcomers, which can progress to perforations and leaks. This degradation primarily stems from two key sources.
The first is oxygen corrosion, which occurs when dissolved oxygen enters the feedwater system due to a malfunctioning deaerator—operating at incorrect temperature or pressure—or through air ingress at feed pump seals. The second is acidic corrosion. This happens when boiler water pH is consistently controlled too low (below 10), or when improper lay-up procedures during shutdowns allow acidic conditions to form, aggressively attacking the metal surfaces of your boiler.
Combating this requires a disciplined, multi-layered defensive strategy for your boiler. The foremost solution is to ensure the deaerator operates with peak efficiency, maintaining a temperature above 102°C for atmospheric units and verifying its re-boiler section functions correctly. This should be supplemented by chemical oxygen scavenging, using agents like sodium sulfite or hydrazine. Simultaneously, rigorous control of boiler water chemistry is non-negotiable; pH must be maintained within the optimal 10-12 range to prevent acidic corrosion. Finally, implementing strict lay-up protection protocols—using proper dry or wet storage methods during extended shutdowns—is critical to prevent air intrusion and corrosive attack on your idle boiler.
Invest in a boiler system engineered from the start to resist corrosion and simplify water chemistry management. Our boilers incorporate design features and material selections that minimize corrosion risk and are supported by comprehensive operational guidance to help you maintain perfect water treatment conditions. Protect your capital investment and ensure continuous, reliable steam generation.
Choose a partner committed to the long-term health and efficiency of your boiler. Contact our team today to learn about our corrosion-resistant solutions: leizhanworld@gmail.com.
