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

Chapter 2Operational dataSee Description.ApplicabilityIn general, SNCR is applicable to new and existing ammonia plants. In particular SNCR isconsidered as an efficient reduction measure for existing plants. SNCR is an option forretrofitting the primary reformer, as it can be implemented at existing plants.Retrofitting is considered suitable in the case of Kellogg furnaces, and unlikely to be possiblewith Foster Wheeler furnaces. Some furnaces will not provide the right temperaturerange/retention times [17, 2nd TWG meeting, 2004].EconomicsAs the reducing agent is available on-site, equipment costs and operating costs are lower incomparison to other combustion plants. At ammonia plants, equipment for an additive storageunit is not necessary.Driving force for implementationReduced NO x emissions.References to literature and example plants• the two ammonia production lines of Agrolinz Melamin were equipped with SNCR between1998 and 2000• DSM, Geleen• Kemira, Tertre.[9, Austrian UBA, 2002, 10, European Commission, 2005, 11, European Commission, 2003]74 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers