Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vulcan Cincinnati Inc
Original Assignee
Vulcan Cincinnati Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vulcan Cincinnati IncfiledCriticalVulcan Cincinnati Inc
Priority to ES0249808ApriorityCriticalpatent/ES249808A1/en
Publication of ES249808A1publicationCriticalpatent/ES249808A1/en
Process for obtaining urea characterized by comprising the dehydration of a molten urea product containing about 10% to 30% by weight of water, the remainder being essentially urease and is at a temperature of 95º to 143º c. Approximately to obtain a molten urea containing no more of 15% by weight of water and by evaporating the molten urea in such a way that the pressure of the water vapor on the molten urea is greater than the pressure of the water vapor that would balance the molten urea at its crystallization temperature as evaporation proceeds but no more of 20mm. Of mercury higher than the aforesaid equilibrium pressure of water vapor when the concentration of water thus minimizes the formation of biuret in the urea molten thereby evaporated while avoiding the formation of urea crystals during evaporation. (Machine-translation by Google Translate, not legally binding)
ES0249808A1959-06-031959-06-03Procedure for obtaining urea (Machine-translation by Google Translate, not legally binding)
ExpiredES249808A1
(en)
A procedure, with its corresponding installation, for the obtaining of crystallized products (Machine-translation by Google Translate, not legally binding)