CA939293A - Removal of unreacted materials from urea synthesis effluent - Google Patents

Removal of unreacted materials from urea synthesis effluent

Info

Publication number
CA939293A
CA939293A CA091,858A CA91858A CA939293A CA 939293 A CA939293 A CA 939293A CA 91858 A CA91858 A CA 91858A CA 939293 A CA939293 A CA 939293A
Authority
CA
Canada
Prior art keywords
removal
urea synthesis
unreacted materials
synthesis effluent
effluent
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA091,858A
Other languages
English (en)
Other versions
CA91858S (en
Inventor
Nobuyoshi Hashimoto
Kazumichi Kanai
Eiji Otsuka
Shigeru Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Application granted granted Critical
Publication of CA939293A publication Critical patent/CA939293A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA091,858A 1969-08-30 1970-08-28 Removal of unreacted materials from urea synthesis effluent Expired CA939293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44068311A JPS4919259B1 (US07122603-20061017-C00045.png) 1969-08-30 1969-08-30

Publications (1)

Publication Number Publication Date
CA939293A true CA939293A (en) 1974-01-01

Family

ID=13370122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA091,858A Expired CA939293A (en) 1969-08-30 1970-08-28 Removal of unreacted materials from urea synthesis effluent

Country Status (9)

Country Link
US (1) US3725210A (US07122603-20061017-C00045.png)
JP (1) JPS4919259B1 (US07122603-20061017-C00045.png)
CA (1) CA939293A (US07122603-20061017-C00045.png)
DE (1) DE2042574C3 (US07122603-20061017-C00045.png)
ES (1) ES382368A1 (US07122603-20061017-C00045.png)
FR (1) FR2056850A5 (US07122603-20061017-C00045.png)
GB (1) GB1295742A (US07122603-20061017-C00045.png)
NL (1) NL148595B (US07122603-20061017-C00045.png)
SU (1) SU467518A3 (US07122603-20061017-C00045.png)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036878A (en) * 1972-06-12 1977-07-19 Unie Van Kunstmestfabrieken, B.V. Process for preparing urea
NL7417042A (nl) * 1974-01-16 1975-07-18 Fisons Ltd Werkwijze voor de bereiding van ammoniumfos- faten.
US4061633A (en) * 1974-02-25 1977-12-06 Lazar Isaevich Blyakhman Method of recovering primary and secondary amines
JPS555977B2 (US07122603-20061017-C00045.png) * 1974-05-14 1980-02-12
IT1014987B (it) * 1974-06-12 1977-04-30 Snam Progetti Procedimento integrato urea am moniaca
JPS5268129A (en) * 1975-12-05 1977-06-06 Mitsui Toatsu Chem Inc Recovery of unreacted material and heat on urea synthesis
US4110374A (en) * 1976-03-02 1978-08-29 Mitsui Toatsu Chemicals Inc. Process for separating and recovering unreacted materials in urea synthesis
JPS52105125A (en) * 1976-03-02 1977-09-03 Mitsui Toatsu Chem Inc Separation and recovery of unreacted material on urea synthesis
US4341640A (en) * 1976-09-27 1982-07-27 Standard Oil Company Urea hydrolysis
NL7903623A (nl) * 1979-05-09 1980-11-11 Stamicarbon Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
JPS56128749A (en) * 1980-03-13 1981-10-08 Mitsui Toatsu Chem Inc Stripping of unreacted material in urea preparation process
JP2004141263A (ja) * 2002-10-22 2004-05-20 Aruze Corp 遊技機
EP3366670A1 (en) * 2017-02-27 2018-08-29 Casale Sa A process and system to capture ammonia from a purge gas of a urea plant

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317601A (en) * 1962-08-08 1967-05-02 Toyo Koatsu Ind Inc Synthesizing urea
FR1534669A (fr) * 1964-02-17 1968-08-02 Allied Chem Procédé et dispositif de décomposition de carbamate d'ammonium notamment résultant de la synthèse de l'urée ainsi que les produits obtenus par le présent procédé ou procédé similaire
US3471558A (en) * 1964-02-27 1969-10-07 Allied Chem Method for the decomposition and evaporation of urea synthesis effluent
FR1434858A (fr) * 1964-05-29 1966-04-08 Stamicarbon Procédé pour la préparation d'urée
FR1458030A (fr) * 1964-12-16 1966-01-24 Stamicarbon Procédé et dispositif pour la préparation d'urée
US3301897A (en) * 1965-11-08 1967-01-31 Chemical Construction Corp Process for urea synthesis

Also Published As

Publication number Publication date
DE2042574C3 (de) 1978-08-10
NL7012798A (US07122603-20061017-C00045.png) 1971-03-02
NL148595B (nl) 1976-02-16
DE2042574A1 (de) 1971-03-11
US3725210A (en) 1973-04-03
ES382368A1 (es) 1972-11-16
JPS4919259B1 (US07122603-20061017-C00045.png) 1974-05-16
SU467518A3 (ru) 1975-04-15
GB1295742A (US07122603-20061017-C00045.png) 1972-11-08
DE2042574B2 (de) 1977-12-08
FR2056850A5 (US07122603-20061017-C00045.png) 1971-05-14

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