JPS5826909B2 - 尿素水溶液の濃縮方法 - Google Patents

尿素水溶液の濃縮方法

Info

Publication number
JPS5826909B2
JPS5826909B2 JP54117370A JP11737079A JPS5826909B2 JP S5826909 B2 JPS5826909 B2 JP S5826909B2 JP 54117370 A JP54117370 A JP 54117370A JP 11737079 A JP11737079 A JP 11737079A JP S5826909 B2 JPS5826909 B2 JP S5826909B2
Authority
JP
Japan
Prior art keywords
aqueous solution
urea
urea aqueous
weight
concentrating
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
JP54117370A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5643256A (en
Inventor
貴達 下川
豊安 宰田
紘志 石田
隆志 長浜
譲 柳沢
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
Priority to JP54117370A priority Critical patent/JPS5826909B2/ja
Priority to IN989/CAL/80A priority patent/IN151544B/en
Priority to GB8028261A priority patent/GB2058764B/en
Priority to US06/186,058 priority patent/US4316767A/en
Priority to SU802981965A priority patent/SU1155155A3/ru
Priority to BR8005864A priority patent/BR8005864A/pt
Publication of JPS5643256A publication Critical patent/JPS5643256A/ja
Publication of JPS5826909B2 publication Critical patent/JPS5826909B2/ja
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)
JP54117370A 1979-09-14 1979-09-14 尿素水溶液の濃縮方法 Expired JPS5826909B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP54117370A JPS5826909B2 (ja) 1979-09-14 1979-09-14 尿素水溶液の濃縮方法
IN989/CAL/80A IN151544B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-09-14 1980-08-28
GB8028261A GB2058764B (en) 1979-09-14 1980-09-02 Process for concentrating aqueous urea solutions
US06/186,058 US4316767A (en) 1979-09-14 1980-09-11 Process for concentrating aqueous urea solutions
SU802981965A SU1155155A3 (ru) 1979-09-14 1980-09-12 Способ концентрировани водных растворов мочевины
BR8005864A BR8005864A (pt) 1979-09-14 1980-09-12 Processo para concentrar solucoes aquosas de ureia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54117370A JPS5826909B2 (ja) 1979-09-14 1979-09-14 尿素水溶液の濃縮方法

Publications (2)

Publication Number Publication Date
JPS5643256A JPS5643256A (en) 1981-04-21
JPS5826909B2 true JPS5826909B2 (ja) 1983-06-06

Family

ID=14709970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54117370A Expired JPS5826909B2 (ja) 1979-09-14 1979-09-14 尿素水溶液の濃縮方法

Country Status (6)

Country Link
US (1) US4316767A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5826909B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR8005864A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2058764B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN151544B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU1155155A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8006477A (nl) * 1980-11-28 1982-06-16 Unie Van Kunstmestfab Bv Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossing.
IT1163795B (it) * 1983-07-18 1987-04-08 Montedison Spa Apparecchio per lo strippaggio dell'ammoniaca dalle soluzioni provenienti dalla sintesi dell'urea
US4654124A (en) * 1985-09-27 1987-03-31 Aristech Chemical Corporation Purifying cumene hydroperoxide
NL8602769A (nl) * 1986-11-03 1988-06-01 Stamicarbon Werkwijze voor het concentreren van een ureumoplossing en inrichting voor het uitvoeren van de werkwijze.
US5597454A (en) * 1995-04-06 1997-01-28 Lee; Jing M. Process for producing urea
EP0891968B1 (en) * 1997-06-26 2003-06-04 Urea Casale S.A. Process for reducing the residual free ammonia emissions from an urea production plant
US7049474B1 (en) 2000-09-12 2006-05-23 Sunoco, Inc. (R&M) Water diluted cumene hydroperoxide solutions
RU2230592C1 (ru) * 2002-10-14 2004-06-20 Ооо "Хармс" Пленочный выпарной аппарат
CN109070043B (zh) * 2016-05-03 2019-12-06 斯塔米卡邦有限公司 在控制缩二脲的情况下的尿素生产

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2367695A (en) * 1940-10-03 1945-01-23 Research Corp Concentration of hygroscopic solutions
US2933527A (en) * 1956-04-13 1960-04-19 Lonza Electric & Chem Works Process for the manufacture of urea in granular form
US3147174A (en) * 1959-10-14 1964-09-01 Chemical Construction Corp Low moisture urea melt
NL141179B (nl) * 1967-01-20 1974-02-15 Whitlock Mfg Co Werkwijze en inrichting voor de bereiding van ureum.
US3405689A (en) * 1967-05-29 1968-10-15 Stauffer Chemical Co Apparatus for boiling liquids by falling film heating
US3822192A (en) * 1971-12-08 1974-07-02 Aluminum Co Of America Evaporative method

Also Published As

Publication number Publication date
BR8005864A (pt) 1981-03-24
JPS5643256A (en) 1981-04-21
GB2058764A (en) 1981-04-15
US4316767A (en) 1982-02-23
IN151544B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1983-05-14
SU1155155A3 (ru) 1985-05-07
GB2058764B (en) 1983-09-07

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