Project Details

  • Name

    Monoammonium Phosphate Production Plant

  • Industry


  • Product

    Monoammonium phosphate (NH4H2PO4)

  • Scope

    Basic and Details Engineering
    Process Equipment Design and Manufacturing
    Site Assembly and Piping
    Electrification, Instrumentation and Automation
    Testing and Commissioning

  • Status


Mono ammonium phosphate MAP (12-61-0) is one of the most needed and completely water-soluble fertilizers.

Its chemical formula is ammonium dihydrogen phosphate (NH4H2PO4); It contains 12% N (nitrogen) and 61% P2O5 (phosphate). This fertilizer has the highest phosphorus content among other phosphorus-containing fertilizers. Due to its low nitrogen content, it is the most suitable way to provide phosphorus to plants. Since it does not contain harmful chemicals such as chlorine, sodium and heavy metals, it can be used safely on all kinds of plants.

MAP is generally produced by the synthesis of phosphoric acid with ammonia. The process is designed according to the preferred phosphoric acid properties.

Process solutions provided by ASOS for the MAP Facility:

  • Pre-Purification and Filtration Units,
  • Specially Designed Neutralization Unit, in which NH3 Gas and Phosphoric Acid are Mixed Homogenously,
  • High Energy Saving Evaporation Units with Multi Effect Technology,
  • Crystallization Units Designed for MAP Processes (DTB),
  • High Efficiency Fluidized Bed Dryer and Cooler Unit,
  • High purity Crystalline Mono Ammonium Phosphate MAP (12-61-0) Production (F<200 ppm and Low Heavy Metal)
  • Automatic Process Control Unit that Provides Control of the Entire Facility from a Single Point

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