nfcl, mangalore dap/npk plant feasibility study - Environmental ...

3ANNEXURE-IXlower emissions, both to comply with the more stringent legislation and to recover most ofthe nutrients.Licensed PlantsThis technology has been successfully applied to DAP / NPK factories, achieving very lowemissions. The design is always adapted to the local legislation, to avoid at the same timehigh emissions and unnecessary expenses on scrubbing equipment.Ammonia RecoveryThis technology includes several washing stages to recover the ammonia, havingrecorded values as low as 10-50 ppm NH3.Dust / Particles RecoveryModern design consists of medium pressure drop scrubbing systems, which in conjunctionwith high efficiency separators, allow us to reach 10-50 ppm particles emission.Fluorine RecoveryModern technology includes several washing stages of lower pressure drop operating withwater, resulting in very low fluorine emissions.Stack gases OpacityReduction of stack opacity is based on the use of high pressure drop (HPD) scrubber,consisting on a sophisticated multi stages venturi, which provides recovery for the smallestsub micron particles and mists.Integration in the whole PlantModern scrubbing system engineering includes the plant mass & energy balance, statingthe suitable process parameters to assure that the fulfillment of scrubbing systemconditions does not interfere with the operation of reaction section.Nutrients recovery