IE780636L - Production of urea - Google Patents

Production of urea

Info

Publication number
IE780636L
IE780636L IE780636A IE63678A IE780636L IE 780636 L IE780636 L IE 780636L IE 780636 A IE780636 A IE 780636A IE 63678 A IE63678 A IE 63678A IE 780636 L IE780636 L IE 780636L
Authority
IE
Ireland
Prior art keywords
carbon dioxide
urea
production
reactor
ammonia
Prior art date
Application number
IE780636A
Other versions
IE46700B1 (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 IE780636L publication Critical patent/IE780636L/en
Publication of IE46700B1 publication Critical patent/IE46700B1/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In a process for producing urea with ammonia and pure carbon dioxide as starting materials, the improvement comprises feeding liquid ammonia in part to the absorber (1) with all the carbon dioxide and in part to the synthesis reactor (2). The NH3/CO2 molar ratios are 2 to 4 for the condenser and 2.5 to 7 for the reactor. Film-type absorbers are preferred. <IMAGE> [GB1586629A]
IE636/78A 1977-03-31 1978-03-30 Production of urea IE46700B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21904/77A IT1075371B (en) 1977-03-31 1977-03-31 PROCESS FOR THE PRODUCTION OF UREA STARTING FROM CO2 AND PURE NH3

Publications (2)

Publication Number Publication Date
IE780636L true IE780636L (en) 1978-11-30
IE46700B1 IE46700B1 (en) 1983-08-24

Family

ID=11188506

Family Applications (1)

Application Number Title Priority Date Filing Date
IE636/78A IE46700B1 (en) 1977-03-31 1978-03-30 Production of urea

Country Status (20)

Country Link
JP (1) JPS53149929A (en)
AR (1) AR214002A1 (en)
AU (1) AU519725B2 (en)
BE (1) BE865585A (en)
BR (1) BR7802007A (en)
CA (1) CA1101884A (en)
CH (1) CH632240A5 (en)
CS (1) CS204026B2 (en)
DD (1) DD134223A5 (en)
DE (1) DE2813528C3 (en)
DK (1) DK140378A (en)
ES (1) ES469090A1 (en)
FR (1) FR2385690A1 (en)
GB (1) GB1586629A (en)
IE (1) IE46700B1 (en)
IT (1) IT1075371B (en)
LU (1) LU79340A1 (en)
NL (1) NL7803338A (en)
PL (1) PL108056B1 (en)
SE (1) SE7803685L (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790015A (en) * 1971-10-19 1973-04-12 Mavrovic Ivo UREA SYNTHESIS WITH IMPROVED CONVERSION AND HEAT RECOVERY

Also Published As

Publication number Publication date
AU3429178A (en) 1979-09-27
CH632240A5 (en) 1982-09-30
PL108056B1 (en) 1980-03-31
CA1101884A (en) 1981-05-26
IE46700B1 (en) 1983-08-24
BR7802007A (en) 1979-04-03
IT1075371B (en) 1985-04-22
BE865585A (en) 1978-10-02
DE2813528B2 (en) 1979-07-26
LU79340A1 (en) 1978-07-13
DE2813528A1 (en) 1978-10-12
FR2385690A1 (en) 1978-10-27
NL7803338A (en) 1978-10-03
PL205651A1 (en) 1978-12-04
AR214002A1 (en) 1979-04-11
DE2813528C3 (en) 1980-03-20
JPS53149929A (en) 1978-12-27
DD134223A5 (en) 1979-02-14
GB1586629A (en) 1981-03-25
CS204026B2 (en) 1981-03-31
DK140378A (en) 1978-10-01
SE7803685L (en) 1978-10-01
ES469090A1 (en) 1978-11-16
AU519725B2 (en) 1981-12-17

Similar Documents

Publication Publication Date Title
IE41544L (en) Process for producing urea
ES485979A1 (en) Absorption of CO2 and/or H2S utilizing solutions containing two different activators
ES422910A1 (en) Method of recovering unreacted ammonium carbamate in urea synthesis
PL339358A1 (en) Method of concurrently modernising an ammonia production plant and an urea production plant, method of and plant for concurrently producing ammonia and urea
CA2357256A1 (en) Process for the integrated preparation of ammonia and urea
IE780636L (en) Production of urea
AU3806289A (en) Procedure and also apparatus for preparing compost
CA2076886A1 (en) Method for production of 2-amino-6-halogenopurine and synthesis intermediate therefor
CA2008645A1 (en) Process for producing sinterable crystalline aluminum nitride powder
ES8301902A1 (en) Urea production
GB1509950A (en) Urea manufacture
JPS5422323A (en) Preparation of urea for industrial uses
CA2040128A1 (en) Catalysts for the production of methyl amines
GB1366187A (en) Preparation of 2-pyrrolidinone
JPS52136122A (en) Preparation of acrylonitrile
GB1253724A (en) Process for producing urea
ES2006338A6 (en) Process for the obtaining of strontium salts and fertilizer derivatives. (Machine-translation by Google Translate, not legally binding)
JPS54136598A (en) Production of ammonia
ES427408A1 (en) Synthesis of 5-(beta-methylmercaptoethyl)-hydantoin
GB1402453A (en) Production of nickel sulphate
JPS5430129A (en) Preparation of toluic acid amide
JPS52153902A (en) Preparation of hexamethylenediamine
IE32163L (en) Production of urea
JPS52153903A (en) Preparation of hexamethylenediamine
JPS55127387A (en) Production of 5-dimethylamino-1,2,3-trithian