Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

Chapter 3EconomicsInvestment costs. The cost of the AMI unit was EUR 2100000. Because of the experiencegained with the AMI unit, reduction of the investment cost is expected for future units for thisnitric acid plant capacity to around EUR 1700000 by making savings in parts of the equipment.Operating costs. Approximately zero additional energy costs, because the higher pressure drop(approx. +50 mbar) is compensated by the increased tail gas temperature (approx. +10 K;decomposition of N 2 O is an exothermic reaction). Specific catalyst costs and the lifetime of thecatalyst are not available, therefore total operating costs and specific cost calculations are notknown.According to [89, Kuiper, 2001], a comparison of various N 2 O reduction strategies (includingYara, BASF and Uhde approach) does not show a significant difference in cost effectivenessand the cost per tonne HNO 3 . The costs are estimated at EUR 0.71 – 0.87 per tonne CO 2 -eq.reduced and EUR 0.98 – 1.20 per tonne HNO 3 produced.Driving force for implementationReduction of N 2 O emissions.References to literature and example plants[82, Uhde/AMI, 2004, 83, Maurer and Groves, 2005, 84, Schwefer, 2005, 85, Uhde, 2004, 92,Maurer and Merkel, 2003, 93, Uhde, 2005, 94, Austrian UBA, 2001, 95, Wiesenberger, 2004,96, Maurer and Groves, 2004, 100, AMI, 2006, 108, Groves, 2006],AMI, Linz (change over from SCR to combined treatment in 09/2003)Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers 129