Green ammonia production via the integration of a solid oxide electrolyser and a Haber-Bosch loop with a series of solid electrolyte oxygen pumps

A conceptual design for a small-scale green ammonia plant is presented in which synthesis was realised via Haber-Bosch loop using hydrogen produced by solid oxide electrolyser and nitrogen purified from air with series of electrolyte oxygen pumps. The system operated an energetic efficiency 52.12%, very close to cryogenic ASU reference where 52.89% achieved. specific energy consumption 9.94 kWh/kgNH3. Whilst these were encouraging results, opportunities exist improve further. For example, greater heat integration could allow steam required the be raised waste