BG96104A - Метод за производство на карбамид с висок енергиен коефициент на полезно действие - Google Patents

Метод за производство на карбамид с висок енергиен коефициент на полезно действие

Info

Publication number
BG96104A
BG96104A BG096104A BG9610492A BG96104A BG 96104 A BG96104 A BG 96104A BG 096104 A BG096104 A BG 096104A BG 9610492 A BG9610492 A BG 9610492A BG 96104 A BG96104 A BG 96104A
Authority
BG
Bulgaria
Prior art keywords
pressure
urea
production
high energy
reaction zone
Prior art date
Application number
BG096104A
Other languages
English (en)
Other versions
BG60675B1 (bg
Inventor
Franco Granelli
Giuseppe Carloni
Original Assignee
Snamprogetti S.P.A.
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 Snamprogetti S.P.A. filed Critical Snamprogetti S.P.A.
Publication of BG96104A publication Critical patent/BG96104A/bg
Publication of BG60675B1 publication Critical patent/BG60675B1/bg

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

По метода се произвежда карбамид от изходни продукти амоняк и въглероден двуокис. Карбамидният разтвор, получен в реакционната зона, се обработва последователно в първи апарат за термично разлагане при налягане, равно на реакционното, за да се разложи част от остатъчния амониев карбамат на съставките му. В адиабатен десорбер свободният амоняк се десорбира с со2 при налягане, което е с 1-7 мра по-малко от налягането на синтез. Газообразните продукти, получени на тези етапи, при налягане, по-малко от налягането на синтез, се смесват с рециркулиращите разтвори от следващите етапи и се кондензират с помощта на топлопреноса към следващите етапи, а след това се рециркулират като течност към реакционната зона. 9 претенции, 1 фигура
BG96104A 1991-03-22 1992-03-19 Метод за производство на карбамид с висок енергиен коефициент на полезно действие BG60675B1 (bg)

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 (2)

Publication Number Publication Date
BG96104A true BG96104A (bg) 1993-12-24
BG60675B1 BG60675B1 (bg) 1995-12-29

Family

ID=11359193

Family Applications (1)

Application Number Title Priority Date Filing Date
BG96104A BG60675B1 (bg) 1991-03-22 1992-03-19 Метод за производство на карбамид с висок енергиен коефициент на полезно действие

Country Status (13)

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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE134994T1 (de) * 1990-10-05 1996-03-15 Urea Casale Sa Verfahren zur herstellung von harnstoff mit unterschiedlichen leistungen sowie die implementierung in existierenden anlagen
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
ATE394367T1 (de) * 2000-06-15 2008-05-15 Urea Casale Sa Verfahren und vorrichtung zur herstellung von harnstoff
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
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
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
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
WO2020130817A1 (en) * 2018-12-21 2020-06-25 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
SE446978B (sv) * 1977-05-05 1986-10-20 Montedison Spa Isobariskt dubbelatercirkulationsforfarande for syntetisering av urea under bildning av ammoniumkarbamat som mellanprodukt
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
EP0504966B1 (en) 1994-12-07
ITMI910778A0 (it) 1991-03-22
US5359140A (en) 1994-10-25
CN1065452A (zh) 1992-10-21
DE69200785T2 (de) 1995-05-11
EP0504966A1 (en) 1992-09-23
ATE115120T1 (de) 1994-12-15
ES2065124T3 (es) 1995-02-01
DE69200785D1 (de) 1995-01-19
CA2063638C (en) 2005-11-08
IT1245396B (it) 1994-09-20
ITMI910778A1 (it) 1992-09-22
MX9201249A (es) 1992-09-01
CN1035003C (zh) 1997-05-28
SA92120474B1 (ar) 2004-05-11
BG60675B1 (bg) 1995-12-29
RU2043336C1 (ru) 1995-09-10
CA2063638A1 (en) 1992-09-23
BR9200986A (pt) 1992-11-17

Similar Documents

Publication Publication Date Title
BG96104A (bg) Метод за производство на карбамид с висок енергиен коефициент на полезно действие
GB899611A (en) Process for separating gases
IE46220B1 (en) Production of urea
ES422910A1 (es) Procedimiento para recuperar carbonato amonico sin reaccio-nar en la sintesis de urea.
GB930213A (en) Process for the preparation of urea
GB1388669A (en) Process for reducing the concentration of nitrogen oxides in gases
DE3060795D1 (en) Method for the preparation of melamine
GB1106024A (en) Urea synthesis
GB1129787A (en) Process for the production of urea
ES437246A1 (es) Procedimiento para el tratamiento de vapor de agua generado al concentrar una solucion acuosa de urea.
GB1261170A (en) Urea synthesis process
GB1147734A (en) Method for the preparation of urea
GB1131906A (en) Method of synthesizing urea
GB1134849A (en) Urea synthesis process
RO84765A (ro) Procedeu pentru prepararea unei solutii concentrate de uree
SU283197A1 (ru) Способ получени давлением азотоводородной смеси дл синтеза аммиака
GB1287548A (en) A process for purifying waste gases from the production of ammonium nitrite and re-using them for the production of ammonium carbonate
SE7903018L (sv) Integrerat forfarande for framstellning av karbamid och ammoniak
GB1423977A (en) Urea synthesis with heat recovery and ammonium carbamate recirculation
ES395094A1 (es) Procedimiento integrado para la produccion de urea.
ES396661A1 (es) Un procedimiento de sintesis de urea.
GB1104710A (en) Process for making ammonia and urea
FR2095106A5 (en) Urea process from ammonia and carbon dioxide - improved by stripping recycle carbamate with feed carbon dioxide
PL159710B2 (en) Method of purifying waste gases and waters from a melamine production plant
GB885691A (en) Urea synthesis using excess ammonia