Title:
複数の蒸発器を用いた尿素製造
Document Type and Number:
Japanese Patent JP7311715
Kind Code:
B2
Abstract:
A urea production process which includes and a synthesis section, a recovery section and evaporation section and a finishing section wherein the evaporation section includes a first evaporator and downstream thereof a second evaporator for urea solution. The second evaporator operates a lower pressure than the first evaporator to provide a urea melt and second vapor, solidifying the urea melt in a finishing section to provide a solid urea produce and off gas, scrubbing the off gas followed by condensing to produce a first condensate and second condensate; supplying the first condensate to a wastewater treatment section and supply the second condensate to the scrubber wherein the second condensate is used as a scrub liquid in the scrubber.
Inventors:
Raffle Patil
Petrus Anna Maria Robertus Simmons
Branislav Manik
Petrus Anna Maria Robertus Simmons
Branislav Manik
Application Number:
JP2022540527A
Publication Date:
July 19, 2023
Filing Date:
December 30, 2020
Export Citation:
Assignee:
Sutami Carbon Bf
International Classes:
C07C273/16; B01D1/00; B01D53/14; C07C275/00
Domestic Patent References:
| JP2012509833A | ||||
| JP2015520741A | ||||
| JP51063400A | ||||
| JP2016527165A | ||||
| JP58189153A | ||||
| JP9020747A |
Foreign References:
| US4256662 | ||||
| EP3020702A1 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Shinya Mihiro
Tatsuhiko Abe
Shinya Mihiro
Tatsuhiko Abe