Title:
【発明の名称】転化率が高くエネルギー消費が少ない尿素製造プロセス及びそのプラント
Document Type and Number:
Japanese Patent JP3003706
Kind Code:
B2
Abstract:
In a process for the production of urea, substantially pure ammonia and carbon dioxide are reacted in a reaction space (1) from which comes out a reaction mixture subjected to stripping (2) to obtain a partially purified mixture sent to a urea recovery section (3, 4, 7, 8). From the recovery section (3, 4, 7, 8) it is obtained a dilute carbamate solution, which is subjected to stripping (9) with recycling of vapors to the reaction space (1) after condensation (6). This process achieves high conversion yield with reduced energy consumption and low implementation costs.
Inventors:
Pagani, Giorgio
Zardi, Umberto
Zardi, Umberto
Application Number:
JP52338696A
Publication Date:
January 31, 2000
Filing Date:
January 31, 1996
Export Citation:
Assignee:
Yulia Casale Society Anonyme
International Classes:
B01J12/02; C07C273/04; C07C275/00; (IPC1-7): C07C273/04; C07C275/00
Domestic Patent References:
| JP920746A | ||||
| JP63208563A | ||||
| JP63126857A | ||||
| JP5750954A | ||||
| JP62135453A | ||||
| JP6239559A | ||||
| JP5867661A |
Attorney, Agent or Firm:
Yukio Ono (1 person outside)