Ammonia can be a useful intermediate product for the storage and transport of green hydrogen. Elias presented the results of an investigation into an alternative process to Haber-Bosch synthesis, based on the absorption of ammonia in metal halides under moderate conditions.
The analysis used a dynamic process simulation model to compare condensation- and absorption-based separation for small decentralised synthesis plants. To ensure continuous operation, two absorption units were modelled in alternating operation. The analysis provides an energetic comparison of both processes (Haber-Bosch and absorption) and demonstrates the advantages of absorption in terms of flexibility and reduced pressure requirements.
The results show that absorption-based separation can be a viable alternative to condensation for decentralised ammonia production at low pressures. It has the potential to improve the overall efficiency of the system at low reactor turnover rates.
copyright: superdigital
copyright: superdigital
