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  • Home
  • Revamping
    • Ammonia revamping
    • Urea revamping
      • Total Recycle Processes
      • CO2 Stripping Process
      • Ammonia Stripping Processes
    • Nitric Acid revamping
    • Nitrates revamping
    • Phosphates & Complex Fertilizers revamping
    • Melamine revamping
    • Methanol revamping
  • New plants
    • Ammonia new plants
    • Urea new plants
    • Nitric Acid new plants
    • Nitrates new plants
    • Phosphates & Complex Fertilizers new plants
    • Melamine new plants
    • Methanol new plants
    • Syngas new plants
  • Green and Blue solutions
  • Markets
    • Ammonia
    • Urea
    • Nitric Acid
    • Nitrates
    • Phosphates & Complex Fertilizers
    • Melamine
    • Methanol
    • Syngas
    • Integrated solutions
  • Technologies
  • Services
    • Digital services
    • Engineering services
    • Customer care
    • Scope of work
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    • Nitrates
    • Phosphates & Complex Fertilizers
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  1. Home
  2. Revamping
  3. Urea revamping

CO2 Stripping Process

Urea revamping

In CO2 stripping plants urea is synthesized at 140 bar and 180-185°C, with molar NH3/CO2 ratio of 2.95-3.0 in the reactor. CO2 conversion is 58-60%. The reactor effluent, containing unconverted ammonia and carbon dioxide in the form of liquid ammonium carbamate, is decomposed using the feed CO2 as the stripping agent. The gaseous ammonia and carbon dioxide are then partially condensed and recycled to the reactor. The heat produced by this condensation is used to generate 3.5 bar steam. The unreacted carbamate from the stripping section is thoroughly decomposed in a decomposition stage operating at 3 bar and is subsequently condensed to form a carbamate solution, which is recycled to the 140 bar synthesis section. Further concentration of the urea solution leaving the 3 bar decomposition stage takes place in the evaporation section.

Split Flow Loop™ and Full Condenser™

Revamping scheme to boost capacity and efficiency of CO2 Stripping plants

Key features

  • About 65% less inerts to reactor
  • More efficient carbamate condensation thanks to Full Condenser™ technology

Read more …

Casale Full Condenser™

Key features

  • Simple and proven design
  • Submerged condenser with natural circulation
  • Significant production of urea

Read more …

MP Split Flow™ Section

Revamping scheme for large capacity increase of CO2 Stripping plants

Key features

  • Proven design
  • Suitable for production up to 6000 t/d in combination with Split Flow™ & Full Condenser™ technologies

Read more …

Market

  • Urea

folder Urea downloads

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