AT245577B - Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide - Google Patents

Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide

Info

Publication number
AT245577B
AT245577B AT144963A AT144963A AT245577B AT 245577 B AT245577 B AT 245577B AT 144963 A AT144963 A AT 144963A AT 144963 A AT144963 A AT 144963A AT 245577 B AT245577 B AT 245577B
Authority
AT
Austria
Prior art keywords
ammonia
carbon dioxide
urea synthesis
recycling unreacted
unreacted carbamate
Prior art date
Application number
AT144963A
Other languages
German (de)
Inventor
Umberto Zardi
Original Assignee
Montedison 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 filed Critical Montedison Spa
Application granted granted Critical
Publication of AT245577B publication Critical patent/AT245577B/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
    • 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)
AT144963A 1962-02-28 1963-02-25 Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide AT245577B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT402162 1962-02-28

Publications (1)

Publication Number Publication Date
AT245577B true AT245577B (en) 1966-03-10

Family

ID=11112033

Family Applications (1)

Application Number Title Priority Date Filing Date
AT144963A AT245577B (en) 1962-02-28 1963-02-25 Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide

Country Status (3)

Country Link
AT (1) AT245577B (en)
DE (1) DE1468245A1 (en)
ES (1) ES285555A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PH12569A (en) * 1970-09-03 1979-06-20 Snam Progetti Process for producing urea
JPS5517346A (en) * 1978-07-24 1980-02-06 Toyo Eng Corp Synthetic method of urea
ATE80870T1 (en) * 1987-05-15 1992-10-15 Ammonia Casale Sa PROCESS FOR THE PRODUCTION OF UREA.

Also Published As

Publication number Publication date
DE1468245A1 (en) 1968-12-19
ES285555A1 (en) 1963-08-01

Similar Documents

Publication Publication Date Title
CH411833A (en) Method for stripping ammonium carbamate from a urea synthesis solution
AT268326B (en) Process for the complete removal of nitrogen oxides from exhaust gases using ammonia and recovery as ammonium nitrate
CH498811A (en) Process for the production of urea from ammonia and carbon dioxide
AT343670B (en) PROCESS FOR THE RECOVERY OF UNREPOSED AMMONIUM CARBAMATE IN UREA SYNTHESIS
AT288417B (en) Process for the production of urea in combination with the synthesis of ammonia
CH552539A (en) PROCESS AND EQUIPMENT FOR RECOVERING AND LIQUIDIFYING AMMONIA.
AT241496B (en) Process for the production of granular ammonium sulphate nitrate
AT245577B (en) Process for recycling unreacted carbamate in urea synthesis from ammonia and carbon dioxide
AT238213B (en) Process for the production of a high-purity, in particular biuret and ammonia-free molten urea
CH351265A (en) Process for separating mixtures of carbon dioxide and ammonia into the components
AT251003B (en) Process for the production of ammonia and sulfur oxides from ammonium sulphate liquors
AT249074B (en) Process for the production of urea from ammonia and carbon dioxide
CH387015A (en) Process for recycling carbon dioxide and ammonia in urea synthesis
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
CH512444A (en) Process for the production of urea in combination with the synthesis of ammonia
NL138774B (en) PROCESS FOR PREPARING UREA FROM AMMONIA AND CARBON DIOXIDE.
AT244984B (en) Process for the production of urea from carbon dioxide and ammonia
ZM17669A1 (en) Process for the production of urea from a solution containing ammonium carbamate,ammonia and water,with a total recycle of ammonia and carbon dioxide which were not transformed
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
CH414591A (en) Process for the production of urea from NH3 and CO2 and device for carrying out this process
CH507916A (en) Process for the production of urea in combination with the synthesis of ammonia
AT254522B (en) Process for the production of moldings from elastomers containing urethane and / or urea and / or semicarbazide groups
ATA189874A (en) PROCESS FOR THE REMOVAL OF AMMONIA AND CARBAMATE FROM SOLUTIONS EMERGING FROM A UREA SYNTHESIS ACTOR
AT187917B (en) Process to prevent corrosion in the production of urea from NH3 and CO2