Hydrogen Dryer Technology for Ultra-High Purity Hydrogen
The hydrogen dryer, designed and manufactured with our proprietary technology and delivered on January 10, 2025, is a device that supplies ultra-high purity hydrogen (up to 99.999%) by removing moisture and oxygen using a Pd (Palladium) catalyst and adsorbents.
Preheating and Catalytic Reaction: Converting Oxygen into Water
The process begins by preheating the hydrogen gas supplied at the inlet and raising its temperature to 110–130℃ through the pre-heater (H10). This prepares the gas for a smooth chemical reaction with oxygen inside the catalyst tower (T10). Once heated, the hydrogen flows into the catalyst tower, where it reacts with oxygen to produce water. The generated water is cooled by a water-cooled cooler (GC1) and temporarily stored in the separator (SP2). A level sensor continuously monitors the water level, and once it exceeds the set point, the water is automatically discharged through a drain.
Dual-Tower Adsorption and Regeneration Cycle
The cooled hydrogen then passes through two adsorption towers, AD1 and AD2. The adsorption process starts in AD1, where hydrogen flows from the bottom to the top of the tower and moisture is removed by the adsorbent. While AD1 performs the drying process, AD2 undergoes regeneration. In this step, a portion of hydrogen is diverted and heated by the regeneration heater (H20) to desorb the moisture trapped in the adsorbent. The adsorbent is then cooled in the regeneration cooler (GC2), and the separated water is collected in the separator (SP2) before being discharged when the level sensor indicates the preset limit.
Automated Alternation for Continuous High-Purity Hydrogen Supply
After regeneration is complete, the roles of the two adsorption towers are switched: AD1, which was previously performing the drying process, enters regeneration, while AD2 takes over the drying process. This alternating operation allows for continuous supply of high-purity hydrogen. The entire system is fully automated and controlled through a PLC-based sequence control, ensuring stable, efficient, and reliable operation.
