US 12,403,436 B2
Method for producing solid urea by granulation
Gianfranco Bedetti, Milan (IT)
Assigned to Casale SA, Lugano (CH)
Filed by Casale SA, Lugano (CH)
Filed on Nov. 15, 2021, as Appl. No. 17/526,759.
Application 17/526,759 is a continuation of application No. 16/819,867, filed on Mar. 16, 2020, abandoned.
Application 16/819,867 is a continuation of application No. 15/741,652, abandoned, previously published as PCT/EP2016/063027, filed on Jun. 8, 2016.
Claims priority of application No. 15175347 (EP), filed on Jul. 3, 2015.
Prior Publication US 2022/0072492 A1, Mar. 10, 2022
Int. Cl. C07C 273/14 (2006.01); B01J 2/16 (2006.01); C05C 9/00 (2006.01); C07C 273/16 (2006.01)
CPC B01J 2/16 (2013.01) [C05C 9/005 (2013.01); C07C 273/14 (2013.01); C07C 273/16 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for producing solid urea by fluid-bed granulation, the method comprising feeding the granulation with a urea melt having a concentration of at least 99.5% by weight, and wherein no formaldehyde is added to said urea melt.