ES379855A1 - PROCEDURE TO SYNTHESIZE UREA FROM CARBON DIOXIDE AND AMMONIA. - Google Patents

PROCEDURE TO SYNTHESIZE UREA FROM CARBON DIOXIDE AND AMMONIA.

Info

Publication number
ES379855A1
ES379855A1 ES70379855A ES379855A ES379855A1 ES 379855 A1 ES379855 A1 ES 379855A1 ES 70379855 A ES70379855 A ES 70379855A ES 379855 A ES379855 A ES 379855A ES 379855 A1 ES379855 A1 ES 379855A1
Authority
ES
Spain
Prior art keywords
urea
zone
ammonia
procedure
carbon dioxide
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
ES70379855A
Other languages
Spanish (es)
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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
Priority claimed from JP44045395A external-priority patent/JPS4842860B1/ja
Priority claimed from JP44071237A external-priority patent/JPS4843101B1/ja
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Publication of ES379855A1 publication Critical patent/ES379855A1/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
    • 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)

Abstract

A process in which urea is synthesized comprises feeding to and reacting in a heat-recovery zone 7 maintained at urea-synthesis pressure, CO 2 and NH 3 to form a reaction mixture containing ammonium carbonate, the NH 3 /CO 2 molar feed ratio not exceeding 4 : 1, removing all of or some part of the heat of reaction from zone 7, then feeding the reaction mixture and any remaining NH 3 into a urea-synthesis zone 12 maintained at a urea-synthesis pressure to form urea, and maintaining the temperature in zone 12 substantially constant by adjusting the relative amounts of NH 3 fed to zone 7 and zone .12 e.g. through control valve 9 operated by a servomotor in response to the outlet temperature of autoclave 12.
ES70379855A 1969-06-11 1970-05-20 PROCEDURE TO SYNTHESIZE UREA FROM CARBON DIOXIDE AND AMMONIA. Expired ES379855A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP44045395A JPS4842860B1 (en) 1969-06-11 1969-06-11
JP44071237A JPS4843101B1 (en) 1969-09-10 1969-09-10

Publications (1)

Publication Number Publication Date
ES379855A1 true ES379855A1 (en) 1973-02-16

Family

ID=26385371

Family Applications (1)

Application Number Title Priority Date Filing Date
ES70379855A Expired ES379855A1 (en) 1969-06-11 1970-05-20 PROCEDURE TO SYNTHESIZE UREA FROM CARBON DIOXIDE AND AMMONIA.

Country Status (6)

Country Link
DK (1) DK137233B (en)
ES (1) ES379855A1 (en)
FR (1) FR2051080A5 (en)
GB (1) GB1273913A (en)
NL (1) NL166013C (en)
SU (1) SU458126A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094903A (en) * 1976-01-21 1978-06-13 Ivo Mavrovic Urea synthesis with improved heat recovery and conversion
IT1211125B (en) * 1981-10-16 1989-09-29 Ortu Francesco NITROGEN COMPOUNDS. PROCESS FOR THE PREPARATION OF

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU37175A1 (en) * 1958-05-07
NL101446C (en) * 1960-04-08
FR1458030A (en) * 1964-12-16 1966-01-24 Stamicarbon Method and device for the preparation of urea
FR1487249A (en) * 1966-04-05 1967-06-30 Inventa Ag Process for manufacturing urea from ammonia and carbon dioxide

Also Published As

Publication number Publication date
GB1273913A (en) 1972-05-10
NL7007846A (en) 1970-12-15
DK137233B (en) 1978-02-06
NL166013B (en) 1981-01-15
NL166013C (en) 1981-06-15
SU458126A3 (en) 1975-01-25
DK137233C (en) 1978-07-10
FR2051080A5 (en) 1971-04-02

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