Pressure Swing Adsorption (PSA) has proved to be an effective and economic way for hydrogen recovery. Nowadays, the capacity of PSA system with multi-bed ranges from a few hundred Nm3/h to large scale plants with more than 400,000 Nm3/h. The hydrogen purity can reach up to 99.9999%.
Binderless 5A and activated carbon are key adsorbents to remove feed gas impurities such as CO, N2 and CH4. There are four main groups of users for a hydrogen purification system:
- Steam Reforming (Hydrogen Plants)
- Catalytic Reforming Net Gas
- Hydrocracker and Hydrotreater Purge Gases
- Hydrocracker Flash Gas