What is Corrosion?
Corrosion, also known as rust or oxidation, is a natural process that occurs when untreated metal comes into contact with corrosive elements such as oxygen, hydrogen, or water. Over time, this process leads to metal degradation, compromising the integrity of compressed air piping networks.
How Corrosion Affects Compressed Air SystemIn compressed air system, corrosion has multiple detrimental effects. It releases impurities into the air, reduces pipe diameter, and restricts airflow. This, in turn, increases energy consumption, lowers system performance, and may even cause system failures. Addressing corrosion early is crucial for ensuring the longevity and reliability of compressed air systems.
Practical Methods to Prevent Corrosion in Compressed Air SystemCorrosion in compressed air systems primarily results from exposure to water, which introduces hydrogen and oxygen. Despite protective coatings and treatments, water can still enter the system. Therefore, reducing condensate is key to preventing corrosion.
1. Remove Moisture or CondensateRemoving moisture from the compressed air system is the first step in corrosion prevention. Here are effective strategies to eliminate moisture and prevent it from entering pipelines:
Regular Draining: Drain the
compressor air receiver after each use to remove condensate. This can be done manually or with automatic drain valves.
Store Compressors in Dry Locations: Keep compressors in dry, well-ventilated areas to minimize humidity exposure.
2. Install Cyclonic Separators, Aftercoolers, and Dryers to Reduce Corrosion Risk:
Moisture Separators: Equipped with automatic drains, separators can be installed directly in the compressor or downstream to efficiently remove moisture.
Aftercoolers: Aftercoolers cool
compressed air, causing water vapor to condense so it can be removed before entering the system.
Compressed Air Dryers: Use refrigerated dryers or desiccant dryers to eliminate moisture—an effective solution to prevent water buildup in compressed air systems.
