NL161137C - METHOD FOR PREPARING UREA. - Google Patents

METHOD FOR PREPARING UREA.

Info

Publication number
NL161137C
NL161137C NL6808895.A NL6808895A NL161137C NL 161137 C NL161137 C NL 161137C NL 6808895 A NL6808895 A NL 6808895A NL 161137 C NL161137 C NL 161137C
Authority
NL
Netherlands
Prior art keywords
preparing urea
urea
preparing
Prior art date
Application number
NL6808895.A
Other languages
Dutch (nl)
Other versions
NL161137B (en
NL6808895A (en
Inventor
M Guadalupi
U Zardi
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 NL6808895A publication Critical patent/NL6808895A/xx
Publication of NL161137B publication Critical patent/NL161137B/en
Application granted granted Critical
Publication of NL161137C publication Critical patent/NL161137C/en

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)
NL6808895.A 1967-09-29 1968-06-25 METHOD FOR PREPARING UREA. NL161137C (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
NL6808895A NL6808895A (en) 1969-04-01
NL161137B NL161137B (en) 1979-08-15
NL161137C true NL161137C (en) 1980-01-15

Family

ID=11175595

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6808895.A NL161137C (en) 1967-09-29 1968-06-25 METHOD FOR PREPARING UREA.

Country Status (15)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL174548C (en) * 1977-05-05 1988-05-16 Montedison Spa PROCESS FOR PREPARING UREA BY REACTION OF AMMONIA AND CARBON DIOXIDE.
NL7713190A (en) * 1977-11-30 1979-06-01 Unie Van Kunstmestfab Bv METHOD AND DEVICE FOR THE REMOVAL OF AMMONIUM CARBAMATE FROM A UREEA SYNTHESIS SOLUTION.
IT1209532B (en) * 1984-04-20 1989-08-30 Snam Progetti PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF.
IN169678B (en) * 1987-08-13 1991-11-30 Austral Pacific Fertilizers
IT1274362B (en) 1995-02-16 1997-07-17 Snam Progetti HIGH YIELD PROCEDURE FOR THE SYNTHESIS OF UREA
ITMI20120013A1 (en) 2012-01-09 2013-07-10 Saipem Spa PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION
US20240092730A1 (en) 2021-12-20 2024-03-21 Stamicarbon B.V. Thermal stripping urea production

Also Published As

Publication number Publication date
SE373574B (en) 1975-02-10
ES358855A1 (en) 1970-05-16
BE719035A (en) 1969-01-16
CS155191B2 (en) 1974-05-30
IE32209B1 (en) 1973-05-16
NO145949C (en) 1982-06-30
NL161137B (en) 1979-08-15
LU56630A1 (en) 1968-11-14
DE1768776B2 (en) 1973-05-03
FR1576811A (en) 1969-08-01
CH487855A (en) 1970-03-31
DK118396B (en) 1970-08-17
NO145949B (en) 1982-03-22
JPS5432767B1 (en) 1979-10-16
AT290545B (en) 1971-06-11
GB1184004A (en) 1970-03-11
NL6808895A (en) 1969-04-01
IE32209L (en) 1969-03-29
DE1768776A1 (en) 1971-09-16

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: SNAM

V4 Lapsed because of reaching the maximum lifetime of a patent