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Production of NPK Fertilizers through the Nitro-Phosphate (or ODDA) Process with Conversion of Calcium Nitrate and Recirculation of Nitrogen and Phosphorous Effluents.


PB95233672

Publication Date 1981
Page Count 32
Abstract The company uses the Nitrophosphate (ODDA) process with conversion of calcium nitrate and recirculation of nitrogen and phosphorous effluents. The nitrophosphate process includes nitric acid digestion of phosphate rock and deep cooling precipitation of calcium nitrate with subsequent conversion into fertilizer products. The nitrophosphate process includes the use of waste CO2 from an NH3 plant and avoids the use of sulfur. 1.1 tons of steam and 35 kg of oil is saved per ton of P205 by this process. A wide range of commercial phosphate rocks may be used in the process. The Norsk Hydro Nitrophosphate products are not subject to self-sustaining decomposition.
Keywords
  • Waste recycling
  • Fertilizers
  • Urea
  • Ammonia
  • Nitrogen compounds
  • Phosphorus compounds
  • Energy conservation
  • Carbon dioxide
  • ODDA process
Source Agency
  • Environmental Protection Agency Science Applications International Corp
NTIS Subject Category
  • 98A - Agricultural Chemistry
  • 68 - Environmental Pollution & Control
Corporate Authors Economic Commission for Europe (UN), Geneva (Switzerland). Working Party on Low and Non-Waste Technology and Re-Utilization and Recycling of Wastes.; Environmental Protection Agency, Washington, DC.
Supplemental Notes Portions of this document are not fully legible. Sponsored by Environmental Protection Agency, Washington, DC.
Document Type Technical Report
NTIS Issue Number 199518
Production of NPK Fertilizers through the Nitro-Phosphate (or ODDA) Process with Conversion of Calcium Nitrate and Recirculation of Nitrogen and Phosphorous Effluents.
Production of NPK Fertilizers through the Nitro-Phosphate (or ODDA) Process with Conversion of Calcium Nitrate and Recirculation of Nitrogen and Phosphorous Effluents.
PB95233672

  • Waste recycling
  • Fertilizers
  • Urea
  • Ammonia
  • Nitrogen compounds
  • Phosphorus compounds
  • Energy conservation
  • Carbon dioxide
  • ODDA process
  • Environmental Protection Agency Science Applications International Corp
  • 98A - Agricultural Chemistry
  • 68 - Environmental Pollution & Control
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