Hydrogen Drying, Purification and Compression
From the electrolyser to storage: what happens to the gas and which equipment is involved.
Hydrogen produced by electrolysis goes through several steps before storage or use. The gas can carry water vapour and traces of oxygen, so it is first dried and purified and then compressed to the storage or filling pressure.
Process steps
- 1
Electrolysis
Hydrogen is produced in the electrolyser. Electrolysers are part of the future H2X portfolio.
- 2
Drying and purification
Water vapour and trace oxygen are removed; the target purity or dew point depends on the application. Typical equipment: purification systems, dryers and pre- and after-filters.
- 3
Compression
The gas is brought to storage or filling pressure with pumps, boosters or compressors for high-pressure service.
- 4
Storage and distribution
Storage vessels, tube bundles and transfer systems complete the chain (future portfolio).
- 5
Testing and safety
Pressure and temperature measurement, relief valves and rupture discs protect the system.
What to define before selecting equipment
Related H2X products
Frequently asked questions
Why is electrolysis hydrogen dried?
Electrolysis hydrogen carries water vapour. Removing it, together with trace oxygen, brings the gas to the purity needed for storage, compression, fuel cells and industrial processes.
What information is needed to select a dryer or purifier?
Gas, flow rate, operating pressure, inlet moisture and the required dew point or purity. With these, the H2X team can guide you to the suitable product and request exact values from the manufacturer.
Are valves and fittings available for hydrogen service?
The catalogue includes valves, fittings and tubing for pressures up to 10,000 bar. For hydrogen, material compatibility and certification requirements must be confirmed for each application.
Planning a hydrogen project?
Tell us your flow, pressure and purity requirements; we will help you with product selection and a quotation.