New exhaust gas clean-up systems for the combustion of new, low-carbon fuels in heavy-duty engines

燃料脱碳将对全球减少人为二氧化碳（CO2）排放（温室气体（GHG）排放的主要来源）产生重大影响。氨（NH3）被认为是一种潜在的无碳燃料和无碳能量载体（载体）。世纪以来，大规模的NH3生产、储存和分配已经在全球范围内商业化地建立。NH3可以从废物源中可持续地生产，可再生能源被认为是绿色氨（G-NH3）。NH3与H2、LPG（液化石油气）或柴油的燃料掺合具有增强NH3的燃烧性质的潜力。因此，对于Eminox来说，详细了解适用于NH3-ICE和NH3/燃料混合物-ICE的排气后处理系统的系统要求至关重要。利用谢菲尔德大学开发的热动力学模型，研究纯NH3和NH3燃料混合物（H2，LPG，柴油）在一定范围的空气燃料当量比，温度和压力下燃烧过程中发生的NOx形成机理。通过固定床反应器对SCR（选择性催化还原）系统的NOx还原效率的实验评估（谢菲尔德大学）。模拟纯NH3和NH3/燃料混合物（H2、天然气LPG、柴油）在一定燃料当量比范围内燃烧产生的发动机废气排放。

Fuel decarbonisation will impact significantly the global reduction of anthropogenic carbon dioxide (CO2) emissions the main source of greenhouse gas (GHGs) emissions. Ammonia (NH3) is considered a potential carbon-free fuel and a carbon-free energy vector (carrier). Large scale NH3 production, storage and distribution has been commercially established on a global scale for over a century. NH3 can be produced sustainably from waste sources, and renewable energy recognised as green-ammonia (G-NH3). Fuel blending of NH3 with either H2, LPG (liquified petroleum gas) or diesel has the potential to enhance the combustion properties for NH3. Therefore, it is critical for Eminox to develop a detailed understanding of the system requirements for an exhaust after-treatment system suitable for NH3-ICE and NH3/Fuel Blends-ICE. Utilising thermo-kinetic models developed by the University of Sheffield to investigate NOx formation mechanisms occurring during the combustion of for pure NH3 and NH3 fuel blends (H2, LPG, Diesel) at a range of air-fuel equivalence ratios, temperatures and pressures. Experimental evaluation of NOx reduction efficiencies for an SCR (selective catalytic reduction) system by way of a fixed bed reactor (University of Sheffield). Simulating engine exhaust gas emissions resultant from combusting pure NH3 and a NH3/fuel blends (H2, nat. gas LPG, Diesel) for a range of fuel-equivalence ratios.