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

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Chapter 88.4.14 UAN: partial recycle CO 2 strippingDescriptionIn the partial recycling CO 2 stripping process, unconverted NH 3 and CO 2 from the stripped ureasolution, together with the gases from the water treatment unit, are transferred for conversioninto UAN solutions.In these plants, UAN production is an integral part of the fertiliser complex. UAN fromscrubbing systems, sieving machines, etc. are fed to a central UAN system, where qualityadjustments can be made.Achieved environmental benefits• considerable saving of utility consumption by omitting various urea finishing steps.Cross-media effectsNone believed likely.Operational dataNo specific information provided.ApplicabilityGenerally applicable.EconomicsNo specific information provided, but cost savings can be assumed.Driving force for implementationCost benefits from omitting various urea finishing steps.References to literature and example plants[9, Austrian UBA, 2002, 128, EFMA, 2000]<strong>Large</strong> <strong>Volume</strong> <strong>Inorganic</strong> <strong>Chemicals</strong> – <strong>Ammonia</strong>, Acids and Fertilisers 361

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