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Patent Searching and Data


Title:
UREA PRODUCTION METHOD AND UREA PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/043391
Kind Code:
A1
Abstract:
The present invention provides a urea production method and production device, capable of increasing the rate of conversion into urea and decreasing the amount of steam consumed. In the present invention, the reactor temperature is raised by introducing into the reactor the entire amount of raw material ammonia, and introducing into the reactor a portion of a decomposition gas obtained from a stripper. The raw material ammonia is preferably heated using a steam condensate generated in a purification step and/or steam generated by condensation heat in a condensation step, whereof the temperature is preferably from 70 to 140°C.

Inventors:
SATO KEISHI (JP)
YOSHIMOTO KENJI (JP)
MORIKAWA HARUYUKI (JP)
Application Number:
JP2016/075505
Publication Date:
March 16, 2017
Filing Date:
August 31, 2016
Export Citation:
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Assignee:
TOYO ENGINEERING CORP (JP)
International Classes:
C07C273/04; C07C275/00
Foreign References:
JPS5653644A1981-05-13
JPH0920745A1997-01-21
JPH0920746A1997-01-21
EP0329215A11989-08-23
Attorney, Agent or Firm:
AKATSUKA MASAKI (JP)
Masaki Akatsuka (JP)
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