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:
Aug. 12, 2025
Filed:
Oct. 09, 2018
Framatome, Courbevoie, FR;
Bruno Mesona, Saint Marcel les Valence, FR;
André Feugier, Chatuzange le Goubet, FR;
Alain Yakoubi, Parnans, FR;
FRAMATOME, Courbevoie, FR;
Abstract
A conversion process for converting uranium hexafluoride into uranium dioxide includes the steps of hydrolysis of UFto uranium oxyfluoride (UOF) in a hydrolysis reactor () by reaction between gaseous UF6 and dry water vapour injected into the reactor (), pyrohydrolysis of UOFto UOin a pyrohydrolysis furnace () by reacting UOFwith dry steam and gaseous hydrogen (H) injected into the furnace (), extracting excess gas in the reactor () via a collecting device () comprising several filters (), periodically cleaning the filters () by injecting a neutral gas into the filters () from the outside to the inside of the reactor () to remove powder stuck on the filters (), and measuring the relative pressure in the reactor (). The conversion method further includes carrying out point cleaning of the filters () when the relative pressure in the reactor () exceeds a predetermined point cleaning threshold.