Patent ID: 6444180
Filing Date: 2002-09-03
Classification: B01D,B01J,C07C,Y02P

Abstract:
A urea reactor comprising:a substantially cylindrical vertical external shell (2), a plurality of superimposed perforated plates (6a-6e) extending horizontally and in mutually spaced relationship in said shell (2), wherein at least two of said adjacent perforated plates (6a-6e) are each divided into a plurality of perforated sectors (17) and unperforated sectors (18) side by side and in alternating manner, and at least one opening (12a-12e) for liquid flow being provided in each of said perforated plates (6a-6e), wherein the openings (12a-12e) for liquid flow of at least two adjacent perforated plates (6a-6e) are mutually offset to define a zigzag liquid flow path, and wherein said perforated sectors (17) and unperforated sectors (18) of said perforated plates (6a-6e) extend between an edge (19) of the perforated plates (6a-6e) adjacent to said opening (12a-12e) for liquid flow and an opposed edge (20) of the perforated plates (6a-6e) adjacent to an internal wall (9) of said shell (2), the perforated sectors (17) defining corresponding flowpaths for a gaseous phase and the unperforated sectors (18) defining a plurality of corresponding zigzag flowpaths for said liquid flow.