GB1184004A - Process for the Production of Urea having a Low Carbamate Content - Google Patents

Process for the Production of Urea having a Low Carbamate Content

Info

Publication number
GB1184004A
GB1184004A GB30814/68A GB3081468A GB1184004A GB 1184004 A GB1184004 A GB 1184004A GB 30814/68 A GB30814/68 A GB 30814/68A GB 3081468 A GB3081468 A GB 3081468A GB 1184004 A GB1184004 A GB 1184004A
Authority
GB
United Kingdom
Prior art keywords
urea
excess
solution
synthesis zone
gaseous
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
GB30814/68A
Other languages
English (en)
Inventor
M Guadalupi
U 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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SpA filed Critical SnamProgetti SpA
Publication of GB1184004A publication Critical patent/GB1184004A/en
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/066—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB30814/68A 1967-09-29 1968-06-27 Process for the Production of Urea having a Low Carbamate Content Expired GB1184004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2102767 1967-09-29

Publications (1)

Publication Number Publication Date
GB1184004A true GB1184004A (en) 1970-03-11

Family

ID=11175595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30814/68A Expired GB1184004A (en) 1967-09-29 1968-06-27 Process for the Production of Urea having a Low Carbamate Content

Country Status (15)

Country Link
JP (1) JPS5432767B1 (fr)
AT (1) AT290545B (fr)
BE (1) BE719035A (fr)
CH (1) CH487855A (fr)
CS (1) CS155191B2 (fr)
DE (1) DE1768776B2 (fr)
DK (1) DK118396B (fr)
ES (1) ES358855A1 (fr)
FR (1) FR1576811A (fr)
GB (1) GB1184004A (fr)
IE (1) IE32209B1 (fr)
LU (1) LU56630A1 (fr)
NL (1) NL161137C (fr)
NO (1) NO145949C (fr)
SE (1) SE373574B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002298A2 (fr) * 1977-11-30 1979-06-13 Unie Van Kunstmestfabrieken B.V. Procédé et appareil pour l'élimination du carbamate d'ammonium d'une solution de synthèse d'urée
US4208347A (en) * 1977-05-05 1980-06-17 Montedison S.P.A. Process for the synthesis of urea
US4899813A (en) * 1984-04-20 1990-02-13 Snamprogetti S.P.A. Process and apparatus for the synthesis of urea and material used in it
EP0727414A1 (fr) 1995-02-16 1996-08-21 SNAMPROGETTI S.p.A. Procédé de préparation d'urée à rendement élevé
WO2013104638A1 (fr) 2012-01-09 2013-07-18 Saipem S.P.A Procédé de synthèse de l'urée comprenant un flux de passivation au fond de la colonne de rectification
WO2023121443A1 (fr) 2021-12-20 2023-06-29 Stamicarbon B.V. Production d'urée par extraction thermique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN169678B (fr) * 1987-08-13 1991-11-30 Austral Pacific Fertilizers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208347A (en) * 1977-05-05 1980-06-17 Montedison S.P.A. Process for the synthesis of urea
EP0002298A2 (fr) * 1977-11-30 1979-06-13 Unie Van Kunstmestfabrieken B.V. Procédé et appareil pour l'élimination du carbamate d'ammonium d'une solution de synthèse d'urée
EP0002298B1 (fr) * 1977-11-30 1981-01-21 Unie Van Kunstmestfabrieken B.V. Procédé et appareil pour l'élimination du carbamate d'ammonium d'une solution de synthèse d'urée
US4899813A (en) * 1984-04-20 1990-02-13 Snamprogetti S.P.A. Process and apparatus for the synthesis of urea and material used in it
EP0727414A1 (fr) 1995-02-16 1996-08-21 SNAMPROGETTI S.p.A. Procédé de préparation d'urée à rendement élevé
WO2013104638A1 (fr) 2012-01-09 2013-07-18 Saipem S.P.A Procédé de synthèse de l'urée comprenant un flux de passivation au fond de la colonne de rectification
US9199926B2 (en) 2012-01-09 2015-12-01 Saipem S.P.A. Process for the synthesis of urea comprising a passivation stream at the stripper bottom
WO2023121443A1 (fr) 2021-12-20 2023-06-29 Stamicarbon B.V. Production d'urée par extraction thermique

Also Published As

Publication number Publication date
FR1576811A (fr) 1969-08-01
BE719035A (fr) 1969-01-16
CH487855A (fr) 1970-03-31
NL6808895A (fr) 1969-04-01
NO145949C (no) 1982-06-30
IE32209B1 (en) 1973-05-16
LU56630A1 (fr) 1968-11-14
IE32209L (en) 1969-03-29
SE373574B (sv) 1975-02-10
DE1768776A1 (de) 1971-09-16
DK118396B (da) 1970-08-17
NO145949B (no) 1982-03-22
NL161137B (nl) 1979-08-15
DE1768776B2 (de) 1973-05-03
ES358855A1 (es) 1970-05-16
AT290545B (de) 1971-06-11
JPS5432767B1 (fr) 1979-10-16
CS155191B2 (en) 1974-05-30
NL161137C (nl) 1980-01-15

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years