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DE3565532D1 - Process for the preparation of urea - Google Patents

Process for the preparation of urea

Info

Publication number
DE3565532D1
DE3565532D1 DE8585104811T DE3565532T DE3565532D1 DE 3565532 D1 DE3565532 D1 DE 3565532D1 DE 8585104811 T DE8585104811 T DE 8585104811T DE 3565532 T DE3565532 T DE 3565532T DE 3565532 D1 DE3565532 D1 DE 3565532D1
Authority
DE
Germany
Prior art keywords
urea
zones
ammonia
followed
synthesis
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8585104811T
Other languages
English (en)
Inventor
Umberto Zardi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casale SA
Original Assignee
Ammonia Casale SA
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 Ammonia Casale SA filed Critical Ammonia Casale SA
Application granted granted Critical
Publication of DE3565532D1 publication Critical patent/DE3565532D1/de
Expired legal-status Critical Current

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)
DE8585104811T 1984-05-19 1985-04-20 Process for the preparation of urea Expired DE3565532D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH247784 1984-05-19

Publications (1)

Publication Number Publication Date
DE3565532D1 true DE3565532D1 (en) 1988-11-17

Family

ID=4234678

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585104811T Expired DE3565532D1 (en) 1984-05-19 1985-04-20 Process for the preparation of urea

Country Status (7)

Country Link
US (1) US4613696A (de)
EP (1) EP0180704B1 (de)
AT (1) ATE37868T1 (de)
CA (1) CA1329625C (de)
DE (1) DE3565532D1 (de)
IN (1) IN164714B (de)
SU (1) SU1417794A3 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8602769A (nl) * 1986-11-03 1988-06-01 Stamicarbon Werkwijze voor het concentreren van een ureumoplossing en inrichting voor het uitvoeren van de werkwijze.
US4869887A (en) * 1987-10-30 1989-09-26 Dijk Christiaan P Van Integrated ammonia-urea process
US4988491A (en) * 1989-04-11 1991-01-29 Christiaan Van Dijk Flexible integration of the production of ammonia and urea
US6150555A (en) * 1992-05-08 2000-11-21 Urea Casale, S.A. Process for urea production
EP0611753B1 (de) * 1993-01-07 1999-10-27 Urea Casale S.A. Verbessertes Verfahren zur Produktion von Harnstoff unter Verwendung eines Schrittes zur Kohlendioxidentfernung
NL1007713C2 (nl) 1997-12-05 1999-06-08 Dsm Nv Werkwijze voor de bereiding van ureum.
ES2560857T3 (es) * 2005-04-19 2016-02-23 Casale Sa Proceso de producción de urea y planta relacionada
US7687041B2 (en) * 2008-02-27 2010-03-30 Kellogg Brown & Root Llc Apparatus and methods for urea production
EP2128129A1 (de) * 2008-05-20 2009-12-02 Urea Casale S.A. Verfahren zur Modernisierung einer Harnstoffproduktionsanlage
EP2199279A1 (de) 2008-12-17 2010-06-23 Urea Casale S.A. Verbesserung der Hochdruck-Schleife in einem Verfahren zur Harnstoffsynthese

Family Cites Families (6)

* 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
US4235816A (en) * 1979-03-08 1980-11-25 Snamprogetti S.P.A. Integrated ammonia-urea process
JPS5811432B2 (ja) * 1979-10-08 1983-03-02 三井東圧化学株式会社 尿素合成法
JPS56128749A (en) * 1980-03-13 1981-10-08 Mitsui Toatsu Chem Inc Stripping of unreacted material in urea preparation process
US4311856A (en) * 1980-12-31 1982-01-19 Toyo Engineering Corp. Process for synthesizing 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.

Also Published As

Publication number Publication date
EP0180704A1 (de) 1986-05-14
ATE37868T1 (de) 1988-10-15
EP0180704B1 (de) 1988-10-12
US4613696A (en) 1986-09-23
IN164714B (de) 1989-05-13
SU1417794A3 (ru) 1988-08-15
CA1329625C (en) 1994-05-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: UREA CASALE S.A., LUGANO, CH

8339 Ceased/non-payment of the annual fee