Title:
UREA PRODUCTION METHOD AND UREA PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/043390
Kind Code:
A1
Abstract:
The present invention provides a method and a device capable of producing urea more efficiently. In the present invention, prior to removing unreacted materials from a urea synthesis solution obtained from a stripper, the pressure of the urea synthesis solution is decreased from the synthesis pressure, and the obtained gas-liquid mixture, once heated by a decomposition gas from the stripper, is introduced into a purification system. The heating of the gas-liquid mixture by the decomposition gas is carried out using a shell-and-tube heat exchanger, the decomposition gas being introduced on the tube side while introducing the gas-liquid mixture on the shell side.
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| WO/2016/132091 | PROCESS FOR THE PRODUCTION OF FORMALDEHYDE |
| WO/2013/083378 | A PROCESS FOR SYNTHESIS OF UREA AND A RELATED ARRANGEMENT FOR A REACTION SECTION OF A UREA PLANT |
| WO/2011/162610 | UREA PLANT |
Inventors:
BAHARUDDIN MAGHFURI (JP)
NISHIKAWA GENSHI (JP)
MORIKAWA HARUYUKI (JP)
NISHIKAWA GENSHI (JP)
MORIKAWA HARUYUKI (JP)
Application Number:
PCT/JP2016/075504
Publication Date:
March 16, 2017
Filing Date:
August 31, 2016
Export Citation:
Assignee:
TOYO ENGINEERING CORP (JP)
International Classes:
C07C273/04; C07C275/00
Foreign References:
| JPS63112552A | 1988-05-17 | |||
| JP2003104949A | 2003-04-09 | |||
| EP0212744A1 | 1987-03-04 | |||
| US20150119603A1 | 2015-04-30 | |||
| US5849952A | 1998-12-15 |
Attorney, Agent or Firm:
AKATSUKA Masaki (JP)
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