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:
May. 09, 2023
Filed:
Jun. 09, 2020
Casale SA, Lugano, CH;
Leonardo Marrone, Mercallo, IT;
Paolo Bertini, Lugano, CH;
Casale SA, Lugano, CH;
Abstract
A process for synthesis of urea from ammonia and carbon dioxide comprising the synthesis of urea in parallel in a first urea reactor () at a first urea synthesis pressure and in a second urea reactor () at a second and lower urea synthesis pressure; a stripping step of the reaction effluent of the first reactor, which is performed in a stripper () operating at a stripping pressure lower than the first urea synthesis pressure; the reaction effluent () of the second reactor () and the stripper liquid effluent () are sent to a recovery section () where a carbamate-containing recycle solution () is produced, and said recycle solution () is sent partly to said first reactor and partly to said second reactor.