SMTP25 Tagung
N2O and NH3 Emissions from an Ammonia ICE. And how to Get Rid of them with Precious Metal Catalysts
Autoren
Marcus BONIFER, Christian BREUER, Stefan NOTTELMANN
Heraeus Precious Metals GmbH & Co. KG, Hanau, DE
Zusammenfassung
Various routes are considered for the use of green ammonia: The classical utilization and substitution in industrial applications, using it as hydrogen source via ammonia cracking or its direct use as carbon neutral fuel for internal combustion engines (NH3- ICEs). At present, different engine concepts are under development that use raw or pre-cracked ammonia. However, these various designs present challenging exhaust compositions that require adapted exhaust system configurations and individual abatement technologies.
NH3-ICE’s can emit considerable amounts of unburnt NH3 as well as NOx and N2O which must be removed from an exhaust gas simultaneously containing very high concentrations of water vapor. Furthermore, as combustion technologies advance towards higher efficiency, this will result in overall lower exhaust temperatures.
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