CH468356A - Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature - Google Patents

Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature

Info

Publication number
CH468356A
CH468356A CH499766A CH499766A CH468356A CH 468356 A CH468356 A CH 468356A CH 499766 A CH499766 A CH 499766A CH 499766 A CH499766 A CH 499766A CH 468356 A CH468356 A CH 468356A
Authority
CH
Switzerland
Prior art keywords
synthesis
urea
ammonia
working
carbon dioxide
Prior art date
Application number
CH499766A
Other languages
German (de)
Inventor
Anton Dipl-Masch-Ing Ledergerber
Lung-Pao Dipl Ing Chen
Alfred Dipl Ing Buck
Original Assignee
Inventa Ag
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 Inventa Ag filed Critical Inventa Ag
Priority to CH499766A priority Critical patent/CH468356A/en
Priority to DE19661568845 priority patent/DE1568845A1/en
Priority to FR70377A priority patent/FR1487249A/en
Priority to BE684673D priority patent/BE684673A/xx
Priority to DK1567A priority patent/DK118013B/en
Priority to AT317567A priority patent/AT272360B/en
Priority to NL6704780A priority patent/NL6704780A/xx
Priority to GB1569767A priority patent/GB1124868A/en
Publication of CH468356A publication Critical patent/CH468356A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02Preparation 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
    • C07C273/14Separation; Purification; Stabilisation; Use of additives
    • C07C273/16Separation; Purification
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02Preparation 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
    • C07C273/04Preparation 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH499766A 1966-04-05 1966-04-05 Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature CH468356A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH499766A CH468356A (en) 1966-04-05 1966-04-05 Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature
DE19661568845 DE1568845A1 (en) 1966-04-05 1966-06-06 Process for the production of urea from ammonia and carbon dioxide
FR70377A FR1487249A (en) 1966-04-05 1966-07-21 Process for manufacturing urea from ammonia and carbon dioxide
BE684673D BE684673A (en) 1966-04-05 1966-07-27
DK1567A DK118013B (en) 1966-04-05 1967-03-28 Process for working up the synthesis mixture obtained by urea synthesis from ammonia and carbon dioxide.
AT317567A AT272360B (en) 1966-04-05 1967-04-03 Process for working up the urea synthesis mixture
NL6704780A NL6704780A (en) 1966-04-05 1967-04-04
GB1569767A GB1124868A (en) 1966-04-05 1967-04-05 Preparation of urea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH499766A CH468356A (en) 1966-04-05 1966-04-05 Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature

Publications (1)

Publication Number Publication Date
CH468356A true CH468356A (en) 1969-02-15

Family

ID=4286155

Family Applications (1)

Application Number Title Priority Date Filing Date
CH499766A CH468356A (en) 1966-04-05 1966-04-05 Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature

Country Status (7)

Country Link
AT (1) AT272360B (en)
BE (1) BE684673A (en)
CH (1) CH468356A (en)
DE (1) DE1568845A1 (en)
DK (1) DK118013B (en)
GB (1) GB1124868A (en)
NL (1) NL6704780A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4832091B1 (en) * 1968-02-12 1973-10-04
NL156686B (en) * 1968-03-16 1978-05-16 Stamicarbon PROCEDURE FOR THE PREPARATION OF UREA IN COMBINATION WITH THE SYNTHESIS OF AMMONIA.
US3984469A (en) * 1969-10-16 1976-10-05 Snam Progetti S.P.A. Process for the production of urea
JPS5189B1 (en) * 1970-03-12 1976-01-05
IT1068268B (en) * 1976-09-09 1985-03-21 Snam Progetti PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS
NL8104040A (en) * 1981-09-01 1983-04-05 Unie Van Kunstmestfab Bv METHOD FOR THE PREPARATION OF UREA.
NL8104039A (en) * 1981-09-01 1983-04-05 Unie Van Kunstmestfab Bv METHOD FOR THE PREPARATION OF UREA.
JPS61109760A (en) * 1984-11-02 1986-05-28 Toyo Eng Corp Production of urea
EP0569629A1 (en) * 1992-05-11 1993-11-18 Union Oil Company of California, dba UNOCAL Method for producing acidic urea solutions
AU2010319846B2 (en) 2009-10-28 2015-05-28 Oasys Water LLC Forward osmosis separation processes
JP5887273B2 (en) 2009-10-30 2016-03-16 オアシス ウォーター,インコーポレーテッド Osmotic separation system and method
MX353901B (en) 2011-04-25 2018-02-02 Oasys Water Inc Osmotic separation systems and methods.

Also Published As

Publication number Publication date
GB1124868A (en) 1968-08-21
NL6704780A (en) 1967-10-06
DK118013B (en) 1970-06-29
AT272360B (en) 1969-07-10
BE684673A (en) 1967-01-03
DE1568845A1 (en) 1972-04-13

Similar Documents

Publication Publication Date Title
CH468356A (en) Process for working up the synthesis mixture obtained in the synthesis of urea from ammonia and carbon dioxide in a synthesis reactor at elevated pressure and elevated temperature
DE2126776B2 (en) METHOD AND DEVICE FOR THE RECOVERY OF AMMONIA AND CARBON DIOXIDE FROM A HYDROGEN AND OXYGEN CONTAINING EXHAUST GAS FROM A UREA SYNTHESIS
CH498811A (en) Process for the production of urea from ammonia and carbon dioxide
AT288417B (en) Process for the production of urea in combination with the synthesis of ammonia
CH437230A (en) Process for the production of synthesis gas for ammonia synthesis
AT295554B (en) Process for the production of a synthesis gas containing hydrogen and nitrogen for the production of ammonia
CH459175A (en) Process for the production of urea and device for carrying out the process
AT238213B (en) Process for the production of a high-purity, in particular biuret and ammonia-free molten urea
ATA421674A (en) METHOD FOR PRODUCING UREME FROM AMMONIA AND CARBON DIOXIDE
AT292007B (en) Process for the separation of melamine from a pressurized gaseous reaction mixture of melamine, ammonia and carbon dioxide
CH512444A (en) Process for the production of urea in combination with the synthesis of ammonia
AT249074B (en) Process for the production of urea from ammonia and carbon dioxide
AT281850B (en) Process for the separation of ammonia from the waste gases that are produced from urea during melamine synthesis and have been freed from melamine
AT289036B (en) Process for the recovery of reaction heat in catalytic high-pressure synthesis, in particular ammonia and methanol synthesis
AT317909B (en) Process for urea production from ammonia and carbon dioxide
CH507916A (en) Process for the production of urea in combination with the synthesis of ammonia
AT245577B (en) Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide
CH475951A (en) Process for the separation of ammonia from gas mixtures containing ammonia and nitriles
AT307432B (en) Process for the production of melamine from a hot melamine vapor, ammonia and carbon dioxide-containing synthesis gas mixture
CH456569A (en) Process for the separation and recycling of starting gases not converted in the synthesis of urea from ammonia and carbon dioxide into the synthesis reactor
CH456552A (en) Process for the separation of ammonia from a gaseous mixture
AT244984B (en) Process for the production of urea from carbon dioxide and ammonia
CH387015A (en) Process for recycling carbon dioxide and ammonia in urea synthesis
AT280316B (en) Process for the production of a low-cyanuric acid-ammonia gas mixture from urea
AT268294B (en) Process for cooling the exhaust gases obtained during melamine synthesis by converting urea in the presence of catalysts and, after separation of the melamine, by cooling the synthesis gases