NITROGEN FERTILISERS / AMMONIUM NITRATE – NEUTRALISER & EVAPORATOR
Ammonia and Nitric Acid are fed to the Neutraliser, which can be operating under pressure, under vacuum or at atmospheric pressure. There is a high exothermic reaction which produces NH4NO3 and steam.
Ammonium Nitrate solution is then fed to...
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NITROGEN FERTILISERS / AMMONIUM NITRATE – PRILLING TOWER
Concentrated Ammonium Nitrate (NH4NO3) solution comes from the Evaporator and is sprayed downwards from the top of the Prilling Tower. The inlet air draft rising inside the Prilling Tower cools the falling, sprayed solution, which then forms into solid...
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NITROGEN FERTILISERS / UREA –EVAPORATOR
Urea is formed in the liquid phase following different reactions, in one of 3 types of process : Once Through ; Partial Recycle ; Total Recycle.
Liquid NH3 is mixed with CO2 gas and any recycled Carbamate under high pressure (3200 psi ),...
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NITROGEN FERTILISERS / UREA – PRILLING TOWER
Concentrated Urea solution comes from the Evaporator and is sprayed downwards from the top of the Prilling Tower. The inlet air draft rising inside the Prilling Tower cools the falling, sprayed solution, which then forms into solid ‘prills’. The prills then...
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NITROGEN FERTILISERS / NPK PLANT ACIDULATION & SPHERODISER EMISSIONS
NPK is a fertiliser where 27% of the product is N, P or K, made up of 3, 12 and 12%, respectively. Among the filters used in an NPK plant are those for Acidulation and Ammoniation duty, treating the...
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NITROGEN FERTILISERS / NPK PLANT ACIDULATION & SPHERODISER EMISSIONS
NPK is a fertiliser where 27% of the product is N, P or K, made up of 3, 12 and 12%, respectively. Among the filters used in an NPK plant are those for Acidulation and Ammoniation duty, treating...
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NITRIC ACID / INLET AIR AND NH3 FILTERS
NH3 is oxidised with air on catalyst to form NO at high temperature ( 700 – 1000°C ), in a quick exothermic reaction. After cooling, NO is oxidised by excess air to give NO2. This oxidation continues into the absorbtion...
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NITRIC ACID / PLATINUM CATALYST OR PALLADIUM DUST RECOVERY
NH3 is oxidised with air on catalyst to form NO at high temperature (700 – 1000 °C ), in a quick exothermic reaction. After cooling, NO is oxidised by excess air to give NO2. This oxidation continues into the...
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NITROGEN FERTILISERS / AMMONIUM NITRATE – GRANULATOR DRYER
Ammonium Nitrate (NH4NO3) is granulated then dried as a final process stage.
The drying process emits both Ammonium Nitrate dust and Ammonia at appx. 50 °C :
Typical Inlet dust load: 15,000 to 20,000 mg/Nm3 Ammonium Nitrate prills
Typical Inlet...
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NITROGEN FERTILISERS / UREA GRANULATOR SCRUBBER
Urea solution is granulated then dried as a final process stage. There are various process providers, such as Toyo and Uhde, some of which involve fluidised bed technology.
The process emits both Urea dust and Ammonia:
Typical Inlet Urea dust load...
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