IE34603B1 - Process for producing urea - Google Patents

Process for producing urea

Info

Publication number
IE34603B1
IE34603B1 IE413/70A IE41370A IE34603B1 IE 34603 B1 IE34603 B1 IE 34603B1 IE 413/70 A IE413/70 A IE 413/70A IE 41370 A IE41370 A IE 41370A IE 34603 B1 IE34603 B1 IE 34603B1
Authority
IE
Ireland
Prior art keywords
aqueous solution
reaction vessel
urea
gaseous phase
pressure
Prior art date
Application number
IE413/70A
Other versions
IE34603L (en
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 IE34603L publication Critical patent/IE34603L/en
Publication of IE34603B1 publication Critical patent/IE34603B1/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

Abstract

1292515 Urea SNAM PROGETTI SpA 19 March 1970 [4 April 1969] 13413/70 Heading C2C A process for the production of an aqueous solution of urea comprises reacting ammonia and carbon dioxide in a reaction vessel and allowing the resulting aqueous solution to flow as a film down a heated surface in a decomposition chamber to cause removal of the volatile products and starting materials from the aqueous solution as a gaseous phase, which gaseous phase flows countercurrently to the aqueous solution, the pressure in the decomposition chamber being lower than that in the reaction vessel. The countercurrent flow may be assisted by passing a stripping fluid in the form of an inert gas over the film. The process is preferably carried out at a temperature of from 50‹ to 250‹ C. at a pressure of from 0.1 to 250 atmospheres. [GB1292515A]
IE413/70A 1969-04-04 1970-04-03 Process for producing urea IE34603B1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IE34603L IE34603L (en) 1970-10-04
IE34603B1 true IE34603B1 (en) 1975-06-25

Family

ID=11146229

Family Applications (1)

Application Number Title Priority Date Filing Date
IE413/70A IE34603B1 (en) 1969-04-04 1970-04-03 Process for producing urea

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
BE747769A (en) 1970-08-31
NL7004886A (en) 1970-10-06
ZM3570A1 (en) 1971-07-22
IE34603L (en) 1970-10-04
BR7017988D0 (en) 1973-04-12
CH514555A (en) 1971-10-31
LU60616A1 (en) 1970-05-28
DE2015781B2 (en) 1973-05-03
GB1292515A (en) 1972-10-11
YU35113B (en) 1980-09-25
ES378592A1 (en) 1972-06-16
CA949918A (en) 1974-06-25
FR2042135A5 (en) 1971-02-05
RO69432A (en) 1980-12-30
YU85270A (en) 1979-12-31
AT305304B (en) 1973-01-15
JPS5238017B1 (en) 1977-09-27
CS152471B2 (en) 1973-12-19
DE2015781A1 (en) 1970-10-08

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