Alkaline Hydrogen Generators: 103 to 4,000 Nm³/h

Nel Hydrogen is the acknowledged expert in large scale electrolysers. The very nature of the A Series is seamless capacity upsizing from medium to large scale hydrogen plants based on water electrolysis technology.

Our experience in large scale plants is exemplified through historical plants exceeding 30,000 Nm³/h, as well as the recent installation of new plants with an energy capacity of more than 60 MW.

The world’s most energy efficient electrolysers, the A Series features a cell stack power consumption as low as 3.8 kWh/Nm3 of hydrogen gas produced, up to 2.2 MW per stack. A Series electrolysers can produce up to 3,880 Nm3/h of hydrogen or just over 8 ton per day. This robust system can be containerized, offering one of the world’s smallest footprints for high capacity electrolyser plants at 200 barg.

Features

  • Pure hydrogen at process pressure – up to 200 barg (2,900 psig) hydrogen and 99.99 to 99.999% purity
  • Economical hydrogen supply – tracks electric costs
  • Increased safety – no caustic chemicals 
  • Virtually zero stored hydrogen – eliminates the risk of flooding the space
  • Large capacity at minimum footprint – fraction of space needed compared to large volume gas or liquid hydrogen storage
  • Reliable supply of hydrogen – field-proven reliability
  • Modular skid-based design – flexible plant configurations
  • Automated – safe, unattended operation
  • Containerization available – easy installation

Specifications

Source: Nel Hydrogen

Specifications A150 A300 A485 A1000 A3880
Net Production Rate 50 to 150 Nm3/h 150 to 300 Nm3/h 300 to 485 Nm3/h 600 to 970 Nm3/h 2,400 to 3,880 Nm3/h
Production Capacity Dynamic Range 15 to 100% of flow range 15 to 100% of flow range 15 to 100% of flow range 15 to 100% of flow range 3.75 to 100% of flow range
Power Consumption at Stack1 3.8 to 4.4 kWh/Nm3 3.8 to 4.4 kWh/Nm3 3.8 to 4.4 kWh/Nm3 3.8 to 4.4 kWh/Nm3 3.8 to 4.4 kWh/Nm3

Purity – with optional purification

99.99 to 99.999% 99.99 to 99.999% 99.99 to 99.999% 99.99 to 99.999% 99.99 to 99.999%
O2-Content in H2 < 2 ppm v < 2 ppm v < 2 ppm v < 2 ppm v < 2 ppm v
H2O-Content in H2 < 2 ppm v < 2 ppm v < 2 ppm v < 2 ppm v < 2 ppm v
Delivery Pressure 1 to 200 barg 1 to 200 barg 1 to 200 barg 1 to 200 barg 1 to 200 barg
Footprint

~150 m2

~200 m2

~225 m2

~225 m2

~770 m2

Ambient Temperature 5 to 35°C 5 to 35°C 5 to 35°C 5 to 35°C 5 to 35°C
Electrolyte

25% KOH aqueous solution

25% KOH aqueous solution

25% KOH aqueous solution

25% KOH aqueous solution

25% KOH aqueous solution

Feed Water Consumption 0.9 l/Nm3 0.9 l/Nm3 0.9 l/Nm3 0.9 l/Nm3 0.9 l/Nm3

 

For reference only – specifications are subject to change. Please contact Nel Hydrogen for solutions to best fit your needs.

1 Dependent upon configuration and operating conditions.

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