METHOD FOR ENHANCING THE PRODUCTION CAPACITY OF A UREA PLANT

Japanese Patent JP2014169300

A

PROBLEM TO BE SOLVED: To provide a method for enhancing the capacity of a urea plant capable of enhancing the respective capacities of a high-pressure synthesis zone and a urea recovery zone alone.SOLUTION: In the provided method for enhancing the production capacity of urea overall, a melamine plant is additionally installed within an urea plant including: a compression zone of carbon dioxide and ammonia provided as raw ingredients; a high-pressure synthesis zone of urea; a urea recovery zone for forming a molten urea; and, optionally, a granulating zone. The additional melamine plant is installed so as to feed, entirely or partially into the melamine plant, the molten urea obtained from the urea recovery zone of the urea plant and to return, entirely or partially to the high-pressure synthesis zone and/or urea recovery zone of the urea plant, a residual gas from the melamine plant.

JPS56147756	SYNTHETIC METHOD OF UREA USING SILICON CARBIDE MATERIAL IN APPARATUS
WO/2016/083005	PLANT FOR UREA PRODUCTION
WO/2018/162594	UREA PROCESS WITH CONTROLLED EXCESS OF CO2 AND/OR NH3

TJIOE TJAY TJIEN
MEESSEN JOZEF HUBERT

JP2014084868A

September 18, 2014

April 16, 2014

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STAMICARBON

C07C273/04; C07C273/12; C07C275/00

JP2000516949A	2000-12-19
JP2001509159A	2001-07-10
JPS446273B1
JPS4618971B1	1971-05-27
JPS4519885B1
JPS4639708B1	1971-11-22
JPS4425583B1

WO2000032566A1

2000-06-08

Ikeda Adult
Kazuhiro Yamaguchi
Yoshinori Shimizu
Noda Masakazu

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