Title:
The urea finishing-up method
Document Type and Number:
Japanese Patent JP5934370
Kind Code:
B2
Abstract:
Disclosed is a method for urea finishing. A urea solution is subjected to crystallization and, other than in conventional processes, the urea crystals are shaped by exerting mechanical force onto them. Thus, the conventional prilling or granulation finishing steps can be avoided, and so are the corresponding emissions of ammonia and/or dust. The crystallization comprises a flash crystallization. The invention also pertains to the urea particles obtainable by the process, to a urea plant, and to a method of modifying an existing urea plant.
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Inventors:
Johannes Henriks Mennen
Application Number:
JP2014535684A
Publication Date:
June 15, 2016
Filing Date:
October 12, 2012
Export Citation:
Assignee:
Sutami Carbon Bf
International Classes:
C07C273/16; C07C275/00
Domestic Patent References:
| JP50019538B1 | ||||
| JP54016427A | ||||
| JP45039010B1 | ||||
| JP42025183B1 | ||||
| JP9020747A | ||||
| JP45022531B1 |
Foreign References:
| US3232984 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro