Blog icon

Hydrogen is produced via solid oxide electrolysis, then fed into a second reactor in which it is used as an input for ammonia synthesis.

Technology

What is it?

Hydrogen is produced via solid oxide electrolysis, then fed into a second reactor in which it is used as an input for ammonia synthesis. The heat from the ammonia production step is then fed back to the solid oxide electrolysis cell for further hydrogen production.

Why is it important?

Integrated hydrogen production and ammonia synthesis presents an opportunity to make use of the heat generated from ammonia synthesis step, reducing the amount of input energy required for the solid oxide electrolysis step.

Characteristics

  • Volumetric hydrogen density: High (10.7kg H2 / m3 at 10 bar and 25°C)
  • Gravimetric hydrogen density: High (17.8% by mass)
  • Storage conditions: Liquid at ambient temperature, 10-11 bar pressure

Benefits

  • Downstream process well established
  • Heat integration makes use of heat from exothermic downstream reaction, supplies it back to hydrogen generation reaction
  • No air separation unit required to provide a nitrogen input for ammonia synthesis

Limitations

  • Limitations largely dependent on type of ammonia synthesis method employed. Conventional synthesis is carried out via the Haber-Bosch process, which would necessitate an intermediate compression of hydrogen between steps

RD&D priorities

  • Develop means to economically manufacture and implement cells at scale
  • Prevent degradation of solid oxide electrolysers
  • Develop system integration concepts to engineer a complete integrated system
  • Reduce system capital cost

Known active organisations

  • No active institutions found in study

Other opportunities like this

  • Ammonia is synthesised from hydrogen and nitrogen via one of a variety of methods.

  • Membrane based ammonia synthesis is a method in which hydrogen gas is supplied on one side of a dense metallic membrane, and nitrogen gas on the other.

Process group

Readiness Level

Contact us

Find out how we can help you and your business. Get in touch using the form below and our experts will get in contact soon!

CSIRO will handle your personal information in accordance with the Privacy Act 1988 (Cth) and our Privacy Policy.


First name must be filled in

Surname must be filled in

I am representing *

Please choose an option

Please provide a subject for the enquriy

0 / 100

We'll need to know what you want to contact us about so we can give you an answer

0 / 1900

You shouldn't be able to see this field. Please try again and leave the field blank.