Casale SA

  • 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
  • News
  • Events
    • Webinars
    • Past Webinars
    • Conferences
    • Symposia
  • About us
    • Casale
    • Structure
    • History Timeline
    • The Story of Casale
    • Casale Project
  • Contacts
    • How to reach us
    • Casale in the world
    • Contact us
  • Careers
  • Downloads
    • Ammonia
    • Urea
    • Nitric Acid
    • Nitrates
    • Phosphates & Complex Fertilizers
    • Melamine
    • Methanol
    • Syngas
    • Green and Blue solutions
    • Integrated solutions
    • Services
    • Technologies
    • Conferences
    • Code of Ethics
  • 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
  • News
  • Events
    • Webinars
    • Past Webinars
    • Conferences
    • Symposia
  • About us
    • Casale
    • Structure
    • History Timeline
    • The Story of Casale
    • Casale Project
  • Contacts
    • How to reach us
    • Casale in the world
    • Contact us
  • Careers
  • Downloads
    • Ammonia
    • Urea
    • Nitric Acid
    • Nitrates
    • Phosphates & Complex Fertilizers
    • Melamine
    • Methanol
    • Syngas
    • Green and Blue solutions
    • Integrated solutions
    • Services
    • Technologies
    • Conferences
    • Code of Ethics
  1. Home
  2. Revamping

Melamine revamping

Melamine revamping

Specific technologies to revamp melamine plants are not easily available, but Casale has devised solutions to enhance the efficiency of melamine units or to comply with most stringent environmental regulations. Furthermore attractive solutions to better integrate your melamine unit with the urea plant are also available.

Revamping of single reactor-HP melamine plant

Revamp of HP mono reactor, ammonia based purification plants.

Key features

  • Energy saving
  • Waterfree off-gas
  • “debottlenecking effect” for urea production

Several melamine plants have one HP melamine reactor and an ammonia-based purification section.

This arrangement has some drawbacks, namely:

  • low pressure (25 bar g) and high-water content in the off-gas sent to the Urea Plant
  • High energy consumption for the recovery and recycle of ammonia in the purification section.

Taking advantage from some unique features of the Casale LEM™ technology, Casale has devised a revamping scheme, which basically consist is adding an HP scrubber fof the off-gas, upstream the HP reactor, and a secondary reactor just downstream. The main benefits of the revamped plant are as follows:

  • Higher urea conversion to melamine, due to enhanced OATs conversion to melamine and reduced melam formation
  • Production of CO2-free melamine melt
  • Increased heat recovery.

Part of the heat is recovered from the off gas in the new scrubber by directly preheating the molten urea feed. Furthermore, heat is also recovered by cooling the circulating urea melt in the scrubber thus generating steam that can be used within the plant.

The off-gas recycled to the urea plant is available at high-pressure and water-free.

This has a beneficial effect on urea plant since, being water no longer added to the urea synthesis section as in unmodified scheme, it creates room for additional urea production.

Market

  • Melamine

folder Melamine downloads

for information Contact us

Casale SAOne partner for all your needs
Global provider of integrated solutions for the production of fertilizers and chemicals.

Casale HQ Switzerland
Via Giulio Pocobelli 6 - 6900 Lugano CH

  • Revamping
  • New plants
  • Green and Blue solutions
  • Markets
  • Technologies
  • Services
  • News
  • Events
  • About us
  • Contacts
  • Careers
  • Downloads

Sitemap . Privacy Policy

Cookie Policy . Cookie preferences

© 2022 Casale SA

d60.it

Reserved Area
  • Forgot your password?
  • Forgot your username?
  • Create an account