BR8005864A - Processo para concentrar solucoes aquosas de ureia - Google Patents

Processo para concentrar solucoes aquosas de ureia

Info

Publication number
BR8005864A
BR8005864A BR8005864A BR8005864A BR8005864A BR 8005864 A BR8005864 A BR 8005864A BR 8005864 A BR8005864 A BR 8005864A BR 8005864 A BR8005864 A BR 8005864A BR 8005864 A BR8005864 A BR 8005864A
Authority
BR
Brazil
Prior art keywords
aqueous urea
urea solutions
concentrate aqueous
concentrate
solutions
Prior art date
Application number
BR8005864A
Other languages
English (en)
Inventor
Shimokawa Takatatsu
Saida Toyoyasu
Nagahama Takashi
Yanagisawa Yuzuru
Ishida Koji
Original Assignee
Toyo Engineering Corp
Mitsui Toatsu Chemicals
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 Toyo Engineering Corp, Mitsui Toatsu Chemicals filed Critical Toyo Engineering Corp
Publication of BR8005864A publication Critical patent/BR8005864A/pt

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)
BR8005864A 1979-09-14 1980-09-12 Processo para concentrar solucoes aquosas de ureia BR8005864A (pt)

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 (1)

Publication Number Publication Date
BR8005864A true BR8005864A (pt) 1981-03-24

Family

ID=14709970

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8005864A BR8005864A (pt) 1979-09-14 1980-09-12 Processo para concentrar solucoes aquosas de ureia

Country Status (6)

Country Link
US (1) US4316767A (pt)
JP (1) JPS5826909B2 (pt)
BR (1) BR8005864A (pt)
GB (1) GB2058764B (pt)
IN (1) IN151544B (pt)
SU (1) SU1155155A3 (pt)

Families Citing this family (7)

* 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
DE69722606T2 (de) * 1997-06-26 2004-04-29 Urea Casale S.A. Verfahren zur Verminderung der Emissionen von freiem Restammoniak aus einer Ureumproduktionsanlage
UA123548C2 (uk) 2016-05-03 2021-04-21 Стамікарбон Б.В. Виробництво карбаміду з контрольованим біуретом

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
SU1155155A3 (ru) 1985-05-07
IN151544B (pt) 1983-05-14
JPS5643256A (en) 1981-04-21
JPS5826909B2 (ja) 1983-06-06
US4316767A (en) 1982-02-23
GB2058764B (en) 1983-09-07
GB2058764A (en) 1981-04-15

Similar Documents

Publication Publication Date Title
BR8108416A (pt) Processo para a preparacao de derivados de ureia;composicao n-acilante;concentrado n-acilante
BR8004971A (pt) Processo para preparar solucoes de sal de titanio
BR8800538A (pt) Emulsao de organopolissiloxano e processo para preparar emulsao aquosa de organopolissiloxano
BR7701865A (pt) Processo para produzir tereftalato de polialquileno
BR8107256A (pt) Processo para preparar derivados de melamina
BR8207839A (pt) Processo para preparacao de ureia
BR8005864A (pt) Processo para concentrar solucoes aquosas de ureia
BR8105218A (pt) Processo para concentrar solucoes aquosas de glicois
BR8102608A (pt) Processo para preparar mercapto-alcoois
BR8006441A (pt) Processo para sintese de ureia
BR8004504A (pt) Processo para preparar um composto de azobenzeno
BR8305454A (pt) Processo de purificacao de solucoes aquosas uraniferas
BR7900690A (pt) Processo para preparar mercaptetos de metal alcalino
BR8104262A (pt) Processo para preparacao de solucoes concentradas de poliazocorantes oationicos e emprego
BR7700949A (pt) Aperfeicoamento em processo para purificacao de solucoes aquosas de acrilamida
BR8006886A (pt) Processo de purificacao, processo de remocao de um metal, solucao, e sistema para levar a efeito o processo
BR7902600A (pt) Processo para a preparacao de ciclo-hexanona,e instalacao para realizar o mesmo
BR8302433A (pt) Processo para produzir eteres alqui-ter-butilicos
IT1193553B (it) Processo per purificare soluzioni acquose di acrilamide
BR8200548A (pt) Processo para fabricacao de ureia
BR8005247A (pt) Processo para preparar sulfeto de carbonila
IT1044595B (it) Processo per la preparazione di soluzionl acquose concentrate di formaloeide e urea
BR8101607A (pt) Processo para preparar eteres haloalquilicos
BR7703975A (pt) Processo para preparar derivados de ciclopropano
BR7702341A (pt) Processo para a preparacao de solucoes concentradas de corantes basicos