The HGS system consists of alkaline water electrolysis electrolyzers (AWE), gas-liquid separators, purification systems, and auxiliary units. A Single Stack system can reach a capacity of up to 1,000 NM³/H (5 MW).
The electrolysis cell operates at a pressure of 1.6 or 3.2 MPa. The alkaline electrolysis cell is characterized by large hydrogen production volume, high hydrogen purity, long service life, reliable operation and low operation and maintenance requirements.
Hydrogen and oxygen flow through the electrolyte through their respective channels, together with the alkaline solution, and are directed to the gas separator. Gravity separates the gases from the alkaline solution. The separated hydrogen and oxygen exit through the top of the separator and proceed to the heat exchanger, where they are cooled. The remaining liquid droplets are removed by the hydrogen washing separator. The hydrogen then passes through a regulating valve before being sent to the next stage of the process.
The hydrogen generated by water electrolysis contains oxygen impurities and a small amount of saturated water. In the deaerator, oxygen quickly reacts with hydrogen to form water through a catalytic reaction. Then, a molecular sieve in the dryer absorbs the remaining moisture. After purification, the oxygen content is reduced to ≤5 ppm, and the hydrogen purity reaches 99.999%.
Location: Zhejiang, China
Capacity: 50 Nm³ per hour
Pressure: 16 bar
This is GF’s first integrated and containerized AWE solution for green hydrogen generation, which features easier deployment, assembly and commissioning.
