Highly efficient ammonia synthesis and subsequent cracking to hydrogen are key processes in the transition to the green hydrogen economy. Catalysts play an important role in the ammonia cracking process. Clariant offers both nickel and precious metal catalysts for this application and research on robust catalysts that allow lower temperatures for increased energy efficiency is ongoing.
New methods for low-carbon ammonia production are emerging, while project activity is also rising rapidly.
Industry focus on technologies to reduce the carbon intensity of ammonia and methanol production has been intensifying. In this article thyssenkrupp Uhde, Proton Ventures, Toyo Engineering Corporation, Stamicarbon, BD Energy Systems and KBR report on some of their latest technology developments towards decarbonisation.
Erika Niino-Esser of thyssenkrupp Industrial Solutions explains the importance of thyssenkrupp’s technologies for sustainable hydrogen and ammonia value chains in the global energy transition, and how they are contributing to a climate-neutral world. Several novel green hydrogen projects are also highlighted.
CRU’s Nitrogen + Syngas conference returned to a face to face meeting for the first time in two years at the end of March this year.
ASRL has conducted studies on ammonia destruction in the sulphur recovery unit (SRU) for over a decade1-5 . Other studies at ASRL have investigated mechanisms for ammonium salt formation and deposition downstream in the Claus plant, as well as the potential sources of ammonia (NH3 )in a gas plant7 . A less understood subject is addressing how much residual NH3 is tolerable or at what temperature will residual NH3 cause ammonium salt deposition. In this study, existing knowledge on thermal stability of ammonium salts and new measurements have been used to identify the gaseous components required for deposition, through reversible vapour pressure expressions.