CH514555A - Process for removing synthesis residues from a urea solution by thin-layer distillation - Google Patents

Process for removing synthesis residues from a urea solution by thin-layer distillation

Info

Publication number
CH514555A
CH514555A CH470570A CH470570A CH514555A CH 514555 A CH514555 A CH 514555A CH 470570 A CH470570 A CH 470570A CH 470570 A CH470570 A CH 470570A CH 514555 A CH514555 A CH 514555A
Authority
CH
Switzerland
Prior art keywords
thin
urea solution
layer distillation
removing synthesis
synthesis residues
Prior art date
Application number
CH470570A
Other languages
French (fr)
Inventor
Guadalupi Mario
Zardi Umberto
Lagana Vincenzo
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 CH514555A publication Critical patent/CH514555A/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
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C07C273/16—Separation; Purification
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH470570A 1969-04-04 1970-03-31 Process for removing synthesis residues from a urea solution by thin-layer distillation CH514555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1507269 1969-04-04

Publications (1)

Publication Number Publication Date
CH514555A true CH514555A (en) 1971-10-31

Family

ID=11146229

Family Applications (1)

Application Number Title Priority Date Filing Date
CH470570A CH514555A (en) 1969-04-04 1970-03-31 Process for removing synthesis residues from a urea solution by thin-layer distillation

Country Status (17)

Country Link
JP (1) JPS5238017B1 (en)
AT (1) AT305304B (en)
BE (1) BE747769A (en)
BR (1) BR7017988D0 (en)
CA (1) CA949918A (en)
CH (1) CH514555A (en)
CS (1) CS152471B2 (en)
DE (1) DE2015781B2 (en)
ES (1) ES378592A1 (en)
FR (1) FR2042135A5 (en)
GB (1) GB1292515A (en)
IE (1) IE34603B1 (en)
LU (1) LU60616A1 (en)
NL (1) NL7004886A (en)
RO (1) RO69432A (en)
YU (1) YU35113B (en)
ZM (1) ZM3570A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1209532B (en) * 1984-04-20 1989-08-30 Snam Progetti PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF.
JP3259661B2 (en) * 1997-06-27 2002-02-25 株式会社イトーキクレビオ Panel body connection device
ITMI20120013A1 (en) 2012-01-09 2013-07-10 Saipem Spa PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION
DE102019208859A1 (en) 2019-06-18 2020-12-24 Skw Stickstoffwerke Piesteritz Gmbh Process for the continuous production of pure urea solutions by utilizing process water

Also Published As

Publication number Publication date
IE34603L (en) 1970-10-04
CS152471B2 (en) 1973-12-19
YU35113B (en) 1980-09-25
NL7004886A (en) 1970-10-06
BR7017988D0 (en) 1973-04-12
FR2042135A5 (en) 1971-02-05
YU85270A (en) 1979-12-31
GB1292515A (en) 1972-10-11
AT305304B (en) 1973-01-15
BE747769A (en) 1970-08-31
RO69432A (en) 1980-12-30
IE34603B1 (en) 1975-06-25
CA949918A (en) 1974-06-25
JPS5238017B1 (en) 1977-09-27
LU60616A1 (en) 1970-05-28
ZM3570A1 (en) 1971-07-22
ES378592A1 (en) 1972-06-16
DE2015781B2 (en) 1973-05-03
DE2015781A1 (en) 1970-10-08

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Legal Events

Date Code Title Description
PL Patent ceased