Title:
複数系統からなる尿素製造プラントの運転方法
Document Type and Number:
Japanese Patent JP5738433
Kind Code:
B2
Abstract:
An operation method of a urea production plant including multiple systems that can prevent a considerable decrease in urea production even when an ammonia synthesis facility is shut down. At a time of producing urea from CO2 and ammonia, in a case where urea production plants including at least two systems are arranged in parallel, when an ammonia production facility (10A) of one of the systems is shut down, liquefied ammonia stored in the shut down system is used, and a CO2 recovery amount in a CO2 recovery facility (23) in an ammonia synthesis facility (10B) of the other system is increased. Synthesis of urea can be then continued by a urea synthesis unit (30A1) in the shut down system by using the increased recovered CO2 and the liquefied ammonia.
Inventors:
Masaki Iijima
Application Number:
JP2013549033A
Publication Date:
June 24, 2015
Filing Date:
December 15, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
C07C273/10; C07C275/00
Domestic Patent References:
| JP2000159519A | ||||
| JP51118725A | ||||
| JP10503526A | ||||
| JP2006335653A |
Foreign References:
| CN101659633A |
Other References:
Masaaki Iijima,Keeping your Urea Plant Operational when the Ammonia Plant is Down,The 2nd Annual GPCA Fertilizer Convention,2011年 9月20日
Attorney, Agent or Firm:
Hiroaki Sakai
Jun Takamura
Jun Takamura