Title:
尿素製造方法及び尿素製造装置
Document Type and Number:
Japanese Patent JP6833698
Kind Code:
B2
Abstract:
Provided are urea manufacturing method and apparatus, which can increase the conversion ratio into urea and to reduce the consumption of steam. The temperature of the reactor is increased by introducing the entire amount of raw material ammonia and introducing a portion of the decomposed gas from the stripper into the reactor. The raw material ammonia is preferably heated using the steam condensate generated in the purification step, and/or the steam generated by the heat of condensation of the decomposed gas and the unreacted substances in the condensation step. The heating temperature is preferably between 70 and 140° C.
Inventors:
Hiroshi Sato
Kenji Yoshimoto
Haruyuki Morikawa
Kenji Yoshimoto
Haruyuki Morikawa
Application Number:
JP2017539136A
Publication Date:
February 24, 2021
Filing Date:
August 31, 2016
Export Citation:
Assignee:
Toyo Engineering Corporation
International Classes:
C07C273/04; C07C275/00
Domestic Patent References:
| JP9020745A | ||||
| JP9020746A | ||||
| JP56053644A |
Attorney, Agent or Firm:
Masaki Akatsuka