公开(公告)号：US20250108349A1

公开(公告)日：2025-04-03

申请号：US18850232

申请日：2023-08-29

Applicant: STAMICARBON B.V.

Inventor： Barbara CUCCHIELLA ,  Juan GONZALEZ COLOMA

IPC: B01J2/16 ,  B01J19/26

Abstract: The disclosure pertains to a fluidized bed granulation process, for instance for urea melt. An embodiment of the process comprises providing a fluidized bed of the particles in a granulation compartment of the fluidized bed granulator; forming a film of the granulation liquid in the form of a hollow conical frustum projecting into the granulation compartment by supplying the granulation liquid through a first channel of a granulation nozzle; supplying secondary gas stream through a secondary gas channel of the granulation nozzle into the granulation compartment, wherein the secondary gas channel is provided as an annulus around the first channel, wherein the exit of the secondary gas channel is directly exposed to the fluidized bed in the granulation compartment, wherein particles from the fluidized bed are entrained in said secondary gas stream.