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

Chapter 1010.3 Current emission and consumption levelsTable 10.3 gives an overview of the consumption levels for the production of superphosphate. For comparison of direct and indirect TSP granulation, see Table 10.4.Table 10.5 gives an overview of emissions to air, Table 10.6 shows an example for water emission levels.Per tonneproductPowerGrindingScrubbingDepends on the type of phosphate rock: about 15 – 18 kWh per tonne phosphaterockThree stage scrubbing: 20 kWh/tonne product due to high pressure drop in theVenturi scrubbers[9, Austrian UBA, 2002]Water 1.2 m 3 This includes 0.8 m 3 H 2 O/tonne product for scrubbingPowerRun of the pile19 kWhWater (powdery product, 0.1 m 3 Most scrubber liquids are recycled back into the processSteam/fuelSSP 18 % P 2 O 5 )No steam and no fuel consumptionPower34 kWh[53, German UBA, 2002]Water Granulate2.0 m 3SteamFuel(SSP 18 % P 2 O 5 )55 kg0.75 GJ For air heatingEnergy Directly granulated SSP 1.4 GJ This includes 0.4 GJ for powder production and 1.0 GJ for granulationPower Powdered SSP 19 kWh[52, infoMil, 2001]Energy Directly granulated TSP 2.0 GJ This includes 0.3 GJ for powder production, 1.0 for granulation, 0.7 for evaporationTable 10.3: Consumption levels for the production of superphosphates390 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers