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:
Mar. 06, 2012
Filed:
Nov. 17, 2009
Federico Zardi, Breganzona, CH;
Andrea Scotto, Breganzona, CH;
Federico Zardi, Breganzona, CH;
Andrea Scotto, Breganzona, CH;
Urea Casale S.A., , CH;
Abstract
A process and a related plant layout for producing urea are disclosed, wherein the high-pressure loop () comprises a synthesis reactor (), a thermal stripper (), a condenser (), and an adiabatic COstripper () disposed upstream said thermal stripper, separating a vapour phase () containing ammonia from the urea solution () discharged from the reactor, and recycling said vapour phase to the reactor. The adiabatic stripper () can be incorporated in a reactor () having a top reaction zone and a bottom adiabatic stripping zone. A revamping method for a conventional urea plant in accordance with the inventive process is also disclosed.