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

Chapter 22.4.16 Stripping and recycling of process condensatesDescriptionThe condensation of the steam surplus in the gas downstream of the shift conversion formsprocess condensate. This condensate contains NH 3 and CH 3 OH as contaminants, which can beremoved by stripping with process steam and then recycled to the primary reformer. Thestripped condensate, which may still contain minor amounts of impurities, can be recycled tothe boiler feed-water after further cleaning by an ion exchange.Achieved environmental benefitsReduction of emissions to water.Cross-media effectsEnergy consumption for stripping.Operational dataNo information provided.ApplicabilityThis technique is applicable to new and existing steam reforming and partial oxidation plants.EconomicsCosts are estimated to be EUR 2.9 – 3.3 million for retrofit in existing plants with a capacity of1500 tonnes/day.Driving force for implementationReduction of emissions to water.References to literature and example plants[1, EFMA, 2000, 3, European Commission, 1997]80 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers