Patent · US Active

Fluid bed granulator

US7955566B2 · kind B2 · utility

1Cited by

5References

6Claims

0Family size

Assignee

Urea Casale SA · CH

Inventor

Gianfranco Bedetti · Milano, IT

Key dates

Filing date	Nov 14, 2007
Grant date	Jun 7, 2011
Priority date	—
Expiry date	Apr 6, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/1923
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In order to produce granules granulometrically polidispersed in a very little range, a fluid bed granulation process of the type comprising the steps of preparing a fluid bed of seeds (S1) of the substance to be granulated, having a free surface (P) substantially horizontal; and feeding a continuous flow (L) of a fluid comprising a growth liquid, provides in the fluid bed for a continuous vortex (V) with a substantially horizontal axis, in which an upper zone (Z1) of seeds wetting and evaporation of possible solvent contained in the flow (L) and a lower zone (Z2) of solidification/consolidation of the growth liquid are identified.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.