IT1245396B - Procedimento per la produzione di urea ad elevata efficienza energetica - Google Patents

Procedimento per la produzione di urea ad elevata efficienza energetica

Info

Publication number
IT1245396B
IT1245396B ITMI910778A ITMI910778A IT1245396B IT 1245396 B IT1245396 B IT 1245396B IT MI910778 A ITMI910778 A IT MI910778A IT MI910778 A ITMI910778 A IT MI910778A IT 1245396 B IT1245396 B IT 1245396B
Authority
IT
Italy
Prior art keywords
production
reaction
urea
procedure
synthesis
Prior art date
Application number
ITMI910778A
Other languages
English (en)
Inventor
Franco Gramelli
Giuseppe Carloni
Original Assignee
Snam Progetti
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 Snam Progetti filed Critical Snam Progetti
Publication of ITMI910778A0 publication Critical patent/ITMI910778A0/it
Priority to ITMI910778A priority Critical patent/IT1245396B/it
Priority to EP92200626A priority patent/EP0504966B1/en
Priority to DE69200785T priority patent/DE69200785T2/de
Priority to AT92200626T priority patent/ATE115120T1/de
Priority to ES92200626T priority patent/ES2065124T3/es
Priority to US07/854,298 priority patent/US5359140A/en
Priority to BG96104A priority patent/BG60675B1/bg
Priority to CA002063638A priority patent/CA2063638C/en
Priority to MX9201249A priority patent/MX9201249A/es
Priority to BR929200986A priority patent/BR9200986A/pt
Priority to SU925011231A priority patent/RU2043336C1/ru
Priority to CN92101898A priority patent/CN1035003C/zh
Priority to SA92120474A priority patent/SA92120474B1/ar
Publication of ITMI910778A1 publication Critical patent/ITMI910778A1/it
Application granted granted Critical
Publication of IT1245396B publication Critical patent/IT1245396B/it

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedimento per la produzione di urea comprendente il trattamento in sequenza della soluzione ureica prodotta nella zona di reazione con un primo decompositore termico isobaro con la reazione a decomporre parte del carbammato ammonico residuo nei suoi componenti, con uno stripper adiabatico con C02 dell'ammoniaca libera condotto ad una pressione da 1 a 7 MPa inferiore a quella di sintesi, con due ulteriori stadi di decomposizione termica del carbammato a pressioni decrescenti. I prodotti gassosi ottenuti dai trattamenti a pressioni inferiori a quella di sintesi vengono miscelati con le soluzioni di riciclo provenienti dagli stadi a valle, condensati in scambio termico nei detti stadi a valle, e quindi riciclati in reazione in fase liquida.
ITMI910778A 1991-03-22 1991-03-22 Procedimento per la produzione di urea ad elevata efficienza energetica IT1245396B (it)

Priority Applications (13)

Application Number Priority Date Filing Date Title
ITMI910778A IT1245396B (it) 1991-03-22 1991-03-22 Procedimento per la produzione di urea ad elevata efficienza energetica
EP92200626A EP0504966B1 (en) 1991-03-22 1992-03-04 Urea production process of high energy efficiency
DE69200785T DE69200785T2 (de) 1991-03-22 1992-03-04 Verfahren zur Herstellung von Harnstoff mit hoher Energieausbeute.
AT92200626T ATE115120T1 (de) 1991-03-22 1992-03-04 Verfahren zur herstellung von harnstoff mit hoher energieausbeute.
ES92200626T ES2065124T3 (es) 1991-03-22 1992-03-04 Procedimiento de produccion de urea de alto rendimiento en cuanto a energia.
BG96104A BG60675B1 (bg) 1991-03-22 1992-03-19 Метод за производство на карбамид с висок енергиен коефициент на полезно действие
US07/854,298 US5359140A (en) 1991-03-22 1992-03-19 Urea production process of high energy efficiency
CA002063638A CA2063638C (en) 1991-03-22 1992-03-20 Urea production process of high energy efficiency
MX9201249A MX9201249A (es) 1991-03-22 1992-03-20 Proceso para la obtencion de urea de eficiencia de energia elevada.
BR929200986A BR9200986A (pt) 1991-03-22 1992-03-20 Processo de producao de ureia
SU925011231A RU2043336C1 (ru) 1991-03-22 1992-03-20 Способ получения мочевины из аммиака и диоксида углерода
CN92101898A CN1035003C (zh) 1991-03-22 1992-03-21 高能效的尿素生产方法
SA92120474A SA92120474B1 (ar) 1991-03-22 1992-04-29 عملية انتاج البولة(اليوريا) بطاقة ذات كفاءة عالية

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI910778A IT1245396B (it) 1991-03-22 1991-03-22 Procedimento per la produzione di urea ad elevata efficienza energetica

Publications (3)

Publication Number Publication Date
ITMI910778A0 ITMI910778A0 (it) 1991-03-22
ITMI910778A1 ITMI910778A1 (it) 1992-09-22
IT1245396B true IT1245396B (it) 1994-09-20

Family

ID=11359193

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910778A IT1245396B (it) 1991-03-22 1991-03-22 Procedimento per la produzione di urea ad elevata efficienza energetica

Country Status (13)

Country Link
US (1) US5359140A (it)
EP (1) EP0504966B1 (it)
CN (1) CN1035003C (it)
AT (1) ATE115120T1 (it)
BG (1) BG60675B1 (it)
BR (1) BR9200986A (it)
CA (1) CA2063638C (it)
DE (1) DE69200785T2 (it)
ES (1) ES2065124T3 (it)
IT (1) IT1245396B (it)
MX (1) MX9201249A (it)
RU (1) RU2043336C1 (it)
SA (1) SA92120474B1 (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479103B1 (en) * 1990-10-05 1996-03-06 Urea Casale S.A. Process for the production of urea by steps with differentiated yields, and relevant implementations also on existing plants
CA2107253C (en) * 1992-12-15 1998-04-21 Anthony Castrogiovanni Cosmetic compositions with improved transfer resistance
EP0611753B1 (en) * 1993-01-07 1999-10-27 Urea Casale S.A. Improved process for urea production involving a carbon dioxide stripping step
USRE39218E1 (en) 1994-09-30 2006-08-01 L'oreal Anhydrous and water-resistant cosmetic compositions
EP0905127B1 (en) * 1997-09-20 2001-11-28 Urea Casale S.A. Process for combined production of ammonia and urea
MXPA02012329A (es) * 2000-06-15 2003-04-25 Urea Casale Sa Proceso y planta para la produccion de urea.
ITMI20071029A1 (it) * 2007-05-22 2008-11-23 Snam Progetti Procedimento migliorato per la sintesi di urea
EP2153880A1 (en) * 2008-07-31 2010-02-17 Urea Casale S.A. Process and plant for the production of a urea solution for use in SCR process for reduction of Nox
EP2199279A1 (en) * 2008-12-17 2010-06-23 Urea Casale S.A. Improvement to the high-pressure loop in a process for synthesis of urea
EP2397463A1 (en) * 2010-06-16 2011-12-21 Urea Casale SA Method for revamping a self-stripping urea plant
ITMI20120013A1 (it) * 2012-01-09 2013-07-10 Saipem Spa Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper
CN104529829B (zh) * 2014-12-22 2016-06-15 嵊州领航信息科技有限公司 一种尿素合成的方法
CN104557616B (zh) * 2014-12-22 2016-06-22 嵊州领航信息科技有限公司 一种合成尿素溶液的方法
CN104529828B (zh) * 2014-12-22 2016-09-07 嵊州领航信息科技有限公司 一种合成尿素的生产装置
CN104557615B (zh) * 2014-12-22 2016-09-07 嵊州领航信息科技有限公司 一种合成尿素溶液的生产装置
AU2019405414B2 (en) * 2018-12-21 2022-06-30 Stamicarbon B.V. Urea production process and plant with heat integration in low pressure recovery section
WO2025181112A1 (en) 2024-03-01 2025-09-04 Casale Sa A stripping process and plant for urea production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG35038A3 (en) * 1977-05-05 1984-01-16 Montedison Spa Method and installation for synthesis of urea
IT1141030B (it) * 1980-08-29 1986-10-01 Snam Progetti Procedimento per la produzione di urea
IT1212524B (it) * 1982-06-08 1989-11-30 Montedison Spa Procedimento perfezionato per il trasferimento, dalla fase liquida alla fase gassosa, dell'ammoniaca in eccesso contenuta in soluzioni acquose di urea.
NL8502228A (nl) * 1985-08-12 1987-03-02 Unie Van Kunstmestfab Bv Werkwijze voor de bereiding van ureum.
IT1232669B (it) * 1989-09-15 1992-03-02 Snam Progetti Procedimento per la produzione di urea con elevato rendimento energetico.

Also Published As

Publication number Publication date
RU2043336C1 (ru) 1995-09-10
EP0504966B1 (en) 1994-12-07
US5359140A (en) 1994-10-25
CA2063638C (en) 2005-11-08
CA2063638A1 (en) 1992-09-23
ITMI910778A0 (it) 1991-03-22
BG60675B1 (bg) 1995-12-29
BG96104A (bg) 1993-12-24
DE69200785D1 (de) 1995-01-19
CN1065452A (zh) 1992-10-21
MX9201249A (es) 1992-09-01
DE69200785T2 (de) 1995-05-11
ITMI910778A1 (it) 1992-09-22
EP0504966A1 (en) 1992-09-23
CN1035003C (zh) 1997-05-28
ATE115120T1 (de) 1994-12-15
ES2065124T3 (es) 1995-02-01
SA92120474B1 (ar) 2004-05-11
BR9200986A (pt) 1992-11-17

Similar Documents

Publication Publication Date Title
IT1245396B (it) Procedimento per la produzione di urea ad elevata efficienza energetica
CA2023316A1 (en) Urea production process with high energy efficiency
SE7710151L (sv) Forfarande for framstellning av karbamid
NO962339D0 (no) Melamin med forbedret renhet fremstilt ved en höy-trykk, ikke katalytisk prosess
ES2180139T3 (es) Procedimiento para preparar urea.
AU2015252275B2 (en) Process and plant for the synthesis of urea and melamine
MY124851A (en) Process for the preparation of urea
CH629733A5 (it) Procedimento integrato per la produzione congiunta di ammoniaca ed urea.
CA2246217A1 (en) Process for combined production of ammonia and urea
NZ503287A (en) Process and plant for the simultaneous production of ammonia and urea
UA85789C2 (ru) Способ получения мочевины, секция и установка для его осуществления
GB1261170A (en) Urea synthesis process
ES8301902A1 (es) Procedimiento para la produccion de urea
GB1147734A (en) Method for the preparation of urea
GB981641A (en) Production of urea
GB1032440A (en) Urea synthesis process
GB1031528A (en) Method for producing urea starting from carbon dioxide and ammonia
GB987528A (en) Urea synthesis process
AU3423901A (en) Process for preparing melamine from urea
IT1107739B (it) Procedimento per la sintesi dell'urea e impianto per il medesimo
ES374565A1 (es) Procedimiento para la produccion continua de una solucion acuosa de urea.
ATA501680A (de) Verfahren zur herstellung von harnstoff
UA81430C2 (en) Process and plant for the production of urea
ES8306104A1 (es) "un procedimiento mejorado para la preparacion de urea".
CA2595866C (en) Process for the preparation of melamine

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950314