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US 11,186,542 B2Granted
Combined apparatus for the synthesis of urea
AssigneeCasale SA
InventorsAndrea Scotto, Enrico Rizzi
Life of this patent
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Abstract
Combined apparatus (1) for the synthesis of urea from ammonia and carbon dioxide, comprising an internal wall (3) which delimits two coaxial zones (4) inside the apparatus, operating respectively as reaction (4) and condensation (5) zones, and optionally also comprising a stripping zone and/or a scrubber integrated in the same apparatus.
Claims9
A combined apparatus for the synthesis of urea from ammonia and carbon dioxide, comprising a shell and comprising a reaction zone and a condensation zone, said two zones communicating with each other and being contained inside said shell,
- wherein said reaction zone is arranged coaxially outside of said condensation zone;
- wherein cooling elements are arranged in the condensation zone,
- wherein said cooling elements comprise a tube bundle having a tube plate;
- and
- wherein the condensation zone is defined in a central region of the apparatus, and the tube plate has a substantially smaller diameter than the diameter of the shell of said apparatus.
2 more elements
Dependencies are inferred from the claim text.