LT3607B - Process for the production of urea by steps and implementation also on existing plants - Google Patents

Process for the production of urea by steps and implementation also on existing plants Download PDF

Info

Publication number
LT3607B
LT3607B LTIP996A LTIP996A LT3607B LT 3607 B LT3607 B LT 3607B LT IP996 A LTIP996 A LT IP996A LT IP996 A LTIP996 A LT IP996A LT 3607 B LT3607 B LT 3607B
Authority
LT
Lithuania
Prior art keywords
reactor
synthesis
process according
urea
fresh
Prior art date
Application number
LTIP996A
Other languages
English (en)
Lithuanian (lt)
Inventor
Giorgio Pagani
Original Assignee
Urea 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25692477&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=LT3607(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Urea Casale Sa filed Critical Urea Casale Sa
Publication of LTIP996A publication Critical patent/LTIP996A/xx
Publication of LT3607B publication Critical patent/LT3607B/lt

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
    • 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
    • Y02P20/141—Feedstock
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
LTIP996A 1990-10-05 1993-09-17 Process for the production of urea by steps and implementation also on existing plants LT3607B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH321690 1990-10-05
US08/041,944 US5403956A (en) 1990-10-05 1993-04-02 Process for urea production

Publications (2)

Publication Number Publication Date
LTIP996A LTIP996A (en) 1995-04-25
LT3607B true LT3607B (en) 1995-12-27

Family

ID=25692477

Family Applications (1)

Application Number Title Priority Date Filing Date
LTIP996A LT3607B (en) 1990-10-05 1993-09-17 Process for the production of urea by steps and implementation also on existing plants

Country Status (7)

Country Link
US (3) US5403956A (ru)
EP (1) EP0479103B1 (ru)
CN (1) CN1052975C (ru)
AT (1) ATE134994T1 (ru)
DE (1) DE69117641T2 (ru)
LT (1) LT3607B (ru)
RU (1) RU2040518C1 (ru)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69117641T2 (de) * 1990-10-05 1996-10-02 Urea Casale Sa Verfahren zur Herstellung von Harnstoff mit unterschiedlichen Leistungen sowie die Implementierung in existierenden Anlagen
US6150555A (en) * 1992-05-08 2000-11-21 Urea Casale, S.A. Process for urea production
US6274767B1 (en) * 1992-11-19 2001-08-14 Urea Casale, S.A. Process for the revamping of urea synthesis plants consisting of a stripper with ammonia
EP0611753B1 (en) * 1993-01-07 1999-10-27 Urea Casale S.A. Improved process for urea production involving a carbon dioxide stripping step
US5523482A (en) * 1993-05-14 1996-06-04 Urea Casale S.A. Process and plant for the production of urea in reaction spaces with different yields
CA2141886E (en) * 1994-05-11 1999-10-12 Federico Zardi Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature
CZ198197A3 (cs) * 1994-12-23 1998-04-15 Urea Casale S. A. Způsob výroby močoviny, zařízení k provádění tohoto způsobu a způsob modernizace existujícího zařízení pro výrobu močoviny
IT1274362B (it) * 1995-02-16 1997-07-17 Snam Progetti Procedimento ad alta resa per la sintesi dell'urea
DE69612661T2 (de) * 1996-08-01 2001-12-06 Urea Casale S.A., Lugano Verfahren und Anlage zur Herstellung von Harnstoff mit hohem Umwandlungsgrad und niedrigem Energieverbrauch
US6231632B1 (en) 1999-05-25 2001-05-15 Engelhard Corporation Urea processing agent
US7687041B2 (en) * 2008-02-27 2010-03-30 Kellogg Brown & Root Llc Apparatus and methods for urea production
EP2784062A1 (en) * 2013-03-27 2014-10-01 Urea Casale SA Method for revamping a self-stripping urea plant
EP3766865A1 (en) * 2019-07-18 2021-01-20 Casale Sa A process for the synthesis of urea

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670588A (en) 1981-10-16 1987-06-02 Ammonia Casle S.A. Process for the production of urea
IT1240675B (it) 1990-04-24 1993-12-17 Snam Progetti Procedimento per la concentrazione sotto vuoto di soluzioni di urea

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1942120A (en) * 1930-07-17 1934-01-02 Standard Oil Co Hydrogenation system
US3049563A (en) * 1957-04-05 1962-08-14 Sxpaf
US3091637A (en) * 1960-05-17 1963-05-28 Chemical Construction Corp Dual cycle urea synthesis process
US3222040A (en) * 1962-06-25 1965-12-07 John S Eckert Support plate for packed tower
GB1124547A (en) * 1966-05-02 1968-08-21 Toyo Koatsu Ind Inc Production of urea
GB1217560A (en) * 1967-07-31 1970-12-31 Mitsui Toatsu Chemicals Synthesis of urea
US4094903A (en) * 1976-01-21 1978-06-13 Ivo Mavrovic Urea synthesis with improved heat recovery and conversion
JPS5750954A (en) * 1980-09-12 1982-03-25 Mitsui Toatsu Chem Inc Synthesis of urea
US4929399A (en) * 1988-03-17 1990-05-29 Union Carbide Industrial Gases Technology Inc. Structured column packing with liquid holdup
DE69117641T2 (de) * 1990-10-05 1996-10-02 Urea Casale Sa Verfahren zur Herstellung von Harnstoff mit unterschiedlichen Leistungen sowie die Implementierung in existierenden Anlagen
EP0497215A1 (en) * 1991-01-29 1992-08-05 Urea Casale S.A. Process and plant for the production of urea with differentiated yield reaction spaces
IT1245396B (it) * 1991-03-22 1994-09-20 Snam Progetti Procedimento per la produzione di urea ad elevata efficienza energetica
ATE167666T1 (de) * 1991-11-14 1998-07-15 Urea Casale Sa Verfahren zur herstellung von harnstoff mit reaktionsräumen unterschiedlicher ausbeuten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670588A (en) 1981-10-16 1987-06-02 Ammonia Casle S.A. Process for the production of urea
IT1240675B (it) 1990-04-24 1993-12-17 Snam Progetti Procedimento per la concentrazione sotto vuoto di soluzioni di urea

Also Published As

Publication number Publication date
EP0479103B1 (en) 1996-03-06
CN1065060A (zh) 1992-10-07
US5573735A (en) 1996-11-12
US5403956A (en) 1995-04-04
DE69117641T2 (de) 1996-10-02
EP0479103A1 (en) 1992-04-08
ATE134994T1 (de) 1996-03-15
LTIP996A (en) 1995-04-25
DE69117641D1 (de) 1996-04-11
US5580236A (en) 1996-12-03
RU2040518C1 (ru) 1995-07-25
CN1052975C (zh) 2000-05-31

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Effective date: 20000917