Title:
PREVENTION OF ADHESION IN INTERIOR OF SEPARATOR
Document Type and Number:
Japanese Patent JP3390116
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for preventing adhesion of urea in the interior of a separator in a concentrating process having an evaporator and the separator for concentrating an aqueous solution of urea under reduced pressure in a urea process and a urea process of large particle.
SOLUTION: In a separator 1 in a concentrating process having an evaporator 7 and the separator 1, steam or an aqueous solution of urea or both are sprayed from holes bored through plural pipings of an inner wall upper than a raw material feed opening 8, a horizontal part 5 of a shielding part and a vertical part 50 of the shielding plate so as to wet the inner wall upper than the raw material feed opening 8 and shielding plate.
Inventors:
Haruyuki Morikawa
Yoshio Yamamoto
Yuzuru Yanagisawa
Yoshio Yamamoto
Yuzuru Yanagisawa
Application Number:
JP7431196A
Publication Date:
March 24, 2003
Filing Date:
March 28, 1996
Export Citation:
Assignee:
Toyo Engineering Corporation
International Classes:
B01D1/30; B01J19/00; C07C273/16; C07C275/02; (IPC1-7): C07C275/02; B01D1/30; B01J19/00; C07C273/16
Domestic Patent References:
| JP57167953A | ||||
| JP50155498A | ||||
| JP5046683A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)