IN2015DN01008A - - Google Patents

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Publication number
IN2015DN01008A
IN2015DN01008A IN1008DEN2015A IN2015DN01008A IN 2015DN01008 A IN2015DN01008 A IN 2015DN01008A IN 1008DEN2015 A IN1008DEN2015 A IN 1008DEN2015A IN 2015DN01008 A IN2015DN01008 A IN 2015DN01008A
Authority
IN
India
Prior art keywords
carbon dioxide
stage
mpa
distillation
synthesis
Prior art date
Application number
Inventor
Yury Andreevich Sergeev
Rinat Venerovich Andrezhanov
Aleksandr Andreevich Vorobyev
Aleksei Vladimirovich Soldatov
Nikolai Valeryevich Lobanov
Aleksandr Alekseevich Prokopyev
Nikolai Mikhailovich Kuznetsov
Oleg Nikolaevich Kostin
Igor Veniaminovich Esin
Original Assignee
Otkrytoe Aktsionernoe Obschestvo Res & Design Inst Of Urea And Organic Synthesis Products Oao Niik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otkrytoe Aktsionernoe Obschestvo Res & Design Inst Of Urea And Organic Synthesis Products Oao Niik filed Critical Otkrytoe Aktsionernoe Obschestvo Res & Design Inst Of Urea And Organic Synthesis Products Oao Niik
Publication of IN2015DN01008A publication Critical patent/IN2015DN01008A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Abstract

The invention relates to processes and plants for producing urea from ammonia and carbon dioxide and can be used in the chemical industry and in the production of fertilizers. The process of producing urea by synthesizing same from carbon dioxide and ammonia at high temperatures and pressures with the two stage distillation of the synthesis products (at 1.5-2.5 and 0.2-0.5 MPa) and the recirculation of unreacted ammonia and carbon dioxide in the form of an aqueous solution of carbon ammounium salts (CAS) additionally includes a stage for the adiabatic separation of the synthesis products at a pressure of 8-12 MPa followed by distillation at the same pressure in a stream of carbon dioxide representing 40 60% of the total amount thereof introduced into the process; the corresponding plant is additionally provided with the equipment necessary to carry out this stage. The gases isolated during this distillation stage together with a portion of the adiabatic separation gases are subjected to absorption condensation at the same pressure of 8-12 MPa and are returned in the form of a CAS solution for synthesis. The technical result achieved by using the proposed process and plant and by the modernization of a plant for the implementation of the proposed process is an increase in the degree of conversion of the initial reagents in the synthesis zone.
IN1008DEN2015 2012-08-15 2013-08-05 IN2015DN01008A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2012134931/04A RU2499791C1 (en) 2012-08-15 2012-08-15 Method and apparatus for producing carbamide and method of upgrading apparatus for producing carbamide
PCT/RU2013/000671 WO2014027929A1 (en) 2012-08-15 2013-08-05 Urea production process and plant and method for modernizing a urea production plant

Publications (1)

Publication Number Publication Date
IN2015DN01008A true IN2015DN01008A (en) 2015-06-12

Family

ID=49710505

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1008DEN2015 IN2015DN01008A (en) 2012-08-15 2013-08-05

Country Status (6)

Country Link
GE (1) GEP201706706B (en)
IN (1) IN2015DN01008A (en)
RU (1) RU2499791C1 (en)
TR (1) TR201501111T1 (en)
UA (1) UA112806C2 (en)
WO (1) WO2014027929A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11766627B2 (en) 2017-10-27 2023-09-26 Stamicarbon B.V. High pressure carbamate condenser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU201591U1 (en) * 2020-07-09 2020-12-22 Акционерное общество "Аммоний" UNIT OF CONCENTRATION OF CARBAMIDE SOLUTION

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL127236C (en) * 1964-05-29
SU839225A1 (en) * 1979-07-12 1984-05-15 Предприятие П/Я Г-4302 Process for producing urea

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11766627B2 (en) 2017-10-27 2023-09-26 Stamicarbon B.V. High pressure carbamate condenser

Also Published As

Publication number Publication date
WO2014027929A1 (en) 2014-02-20
GEP201706706B (en) 2017-07-25
TR201501111T1 (en) 2018-11-21
RU2499791C1 (en) 2013-11-27
UA112806C2 (en) 2016-10-25

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