Process implications of electrifying ammonia production
(2022) 23rd World Hydrogen Energy Conference (WHEC-2022) — Location: Istanbul, Turkey (26.June.2022)
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- Abstract
- The current ammonia production plants - Steam Methane Reforming (SMR) and Haber-Bosch (HB) - are responsible for 1.2% of global CO2 emissions. As more sectors are shifting to electrification, so does the NH3 industry as shown by the amount of studies focusing on electrolysers and Pressure Swing Adsorbers (PSA) to replace SMR. Haber-Bosch itself is being questioned as a new alternative technology is emerging: Chemical Looping (CL). Such transformations imply changes to the current process. This work assesses such implications by comparing 2 alternative scenarios with the conventional case. In terms of emissions, the electrification is clearly benefic with a cut of 74-95% when using wind energy. The replacement of SMR by electrolysers and PSA also improves the energy efficiency, as >60% of the energy consumption in conventional plants originates from the compressors and heat integration. Finally, the combination of Alkaline Electrolysers (AE) and CL is determined as the most suitable for small-scall flexible and economical installations.
- Affiliations
Universiteit Gent Laboratory for Chemical Technology
Citations
Dechany, A., Galvita, V., Van Geem, K., & Proost, J. (2022). Process implications of electrifying ammonia production. WHEC-2022 Abstract Book, p. 174. https://hdl.handle.net/2078.5/224438