The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2024
Filed:
Apr. 05, 2022
Casale SA, Lugano, CH;
Paolo Bertini, Lugano, CH;
Matteo Fumagalli, San Fermo della Battaglia, IT;
Casale SA, Lugano, CH;
Abstract
Process for the preparation of urea granules comprising the steps of obtaining an aqueous urea solution from one or more synthesis and recovery steps wherein ammonia and carbon dioxide are reacted together, subjecting the aqueous urea solution to an evaporation step wherein water is removed to obtain a urea melt (), processing and treating said urea melt in a granulation step () and optionally in a cooling section () to obtain solid urea granules (); the process further comprises a scrubbing step () of granulation offgas and an atmospheric evaporation step () to recover a urea solution () and a water-saturated air stream (): the water-saturated air stream is fed back to the scrubbing section () without condensation, and the recovered urea solution is conveyed to the granulation step ().