GB1173195A - Urea Synthesis - Google Patents

Urea Synthesis

Info

Publication number
GB1173195A
GB1173195A GB3058/67A GB305867A GB1173195A GB 1173195 A GB1173195 A GB 1173195A GB 3058/67 A GB3058/67 A GB 3058/67A GB 305867 A GB305867 A GB 305867A GB 1173195 A GB1173195 A GB 1173195A
Authority
GB
United Kingdom
Prior art keywords
urea
jan
carbon dioxide
stages
urea 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
GB3058/67A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison 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 Montedison SpA, Montecatini Edison SpA filed Critical Montedison SpA
Publication of GB1173195A publication Critical patent/GB1173195A/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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/12—Carbamic acid or thiocarbamic acid; Salts thereof
    • 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)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,173,195. Urea. MONTECATINI EDISON S.p.A. 20 Jan., 1967 [21 Jan., 1966], No. 3058/67. Heading C2C. Urea is synthesized from ammonia and carbon dioxide in a process wherein the reaction products are separated in a number of stages at decreasing pressures by heating them, evaporating the gaseous components and condensing them in the presence of water and recycling the ammonium carbamate solution produced and wherein carbon dioxide is fed to the condenser of one of the separation stages. The heat available in the condensers of the first separation stage may used to produce steam which may be employed to partly cover the thermal requirements of the process.
GB3058/67A 1966-01-21 1967-01-20 Urea Synthesis Expired GB1173195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT143866 1966-01-21

Publications (1)

Publication Number Publication Date
GB1173195A true GB1173195A (en) 1969-12-03

Family

ID=11101458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3058/67A Expired GB1173195A (en) 1966-01-21 1967-01-20 Urea Synthesis

Country Status (6)

Country Link
BE (1) BE692926A (en)
CH (1) CH485674A (en)
CS (1) CS167219B2 (en)
FR (1) FR1508004A (en)
GB (1) GB1173195A (en)
NL (1) NL148879B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3656759A1 (en) * 2018-11-22 2020-05-27 Casale Sa A process for the synthesis of urea
RU2794580C2 (en) * 2018-11-22 2023-04-21 Касале Са Method for urea synthesis

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL187393C (en) * 1982-11-26 1991-09-16 V I Kucheryavy T M Bogdanova D METHOD FOR PREPARING UREA.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3656759A1 (en) * 2018-11-22 2020-05-27 Casale Sa A process for the synthesis of urea
WO2020104197A1 (en) * 2018-11-22 2020-05-28 Casale Sa A process for the synthesis of urea
CN112839926A (en) * 2018-11-22 2021-05-25 卡萨勒有限公司 Process for the synthesis of urea
US11535586B2 (en) 2018-11-22 2022-12-27 Casale Sa Process for the synthesis of urea
CN112839926B (en) * 2018-11-22 2023-02-17 卡萨勒有限公司 Process for the synthesis of urea
RU2794580C2 (en) * 2018-11-22 2023-04-21 Касале Са Method for urea synthesis

Also Published As

Publication number Publication date
FR1508004A (en) 1967-12-29
BE692926A (en) 1967-07-20
DE1618636A1 (en) 1971-04-01
CS167219B2 (en) 1976-04-29
NL6700668A (en) 1967-07-24
NL148879B (en) 1976-03-15
CH485674A (en) 1970-02-15
DE1618636B2 (en) 1975-08-07

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Legal Events

Date Code Title Description
PS Patent sealed
PE Patent expired