ES281859A1 - Un procedimiento de circulación para cristalización al vacío de urea - Google Patents

Un procedimiento de circulación para cristalización al vacío de urea

Info

Publication number
ES281859A1
ES281859A1 ES281859A ES281859A ES281859A1 ES 281859 A1 ES281859 A1 ES 281859A1 ES 281859 A ES281859 A ES 281859A ES 281859 A ES281859 A ES 281859A ES 281859 A1 ES281859 A1 ES 281859A1
Authority
ES
Spain
Prior art keywords
urea
biuret
translation
machine
legally binding
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
ES281859A
Other languages
English (en)
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of ES281859A1 publication Critical patent/ES281859A1/es
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)
ES281859A 1961-10-26 1962-10-25 Un procedimiento de circulación para cristalización al vacío de urea Expired ES281859A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL270676 1961-10-26

Publications (1)

Publication Number Publication Date
ES281859A1 true ES281859A1 (es) 1963-04-16

Family

ID=19753361

Family Applications (1)

Application Number Title Priority Date Filing Date
ES281859A Expired ES281859A1 (es) 1961-10-26 1962-10-25 Un procedimiento de circulación para cristalización al vacío de urea

Country Status (5)

Country Link
US (1) US3185731A (es)
CH (1) CH421075A (es)
DK (1) DK103665C (es)
ES (1) ES281859A1 (es)
GB (1) GB954341A (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345099A (en) * 1981-08-10 1982-08-17 Union Oil Company Of California Method of selectively removing biuret from urea and compositions for use therein
US4645859A (en) * 1983-12-30 1987-02-24 Union Oil Company Of California Methods for purifying biuret
US4645860A (en) * 1983-12-30 1987-02-24 Union Oil Company Of California Biuret manufacture
US4698443A (en) * 1985-07-10 1987-10-06 Union Oil Company Of California Biuret purification
US4701555A (en) * 1985-07-10 1987-10-20 Union Oil Company Of California Methods for removing biuret from urea by adsorption
US4682999A (en) * 1985-10-31 1987-07-28 Union Oil Company Of California Methods for enhancing the productivity of plants
EP4015503A1 (en) * 2020-12-16 2022-06-22 Casale Sa Process for producing urea and biuret

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1127788A (fr) * 1954-07-20 1956-12-24 Grace Chemical Company Perfectionnements apportés à la cristallisation de l'urée

Also Published As

Publication number Publication date
GB954341A (en) 1964-04-02
US3185731A (en) 1965-05-25
CH421075A (de) 1966-09-30
DK103665C (da) 1966-02-07

Similar Documents

Publication Publication Date Title
ES281859A1 (es) Un procedimiento de circulación para cristalización al vacío de urea
GB1010840A (en) A process of recovering alkali metal dithionite from a solution thereof by cooling and crystallizing
FR1242556A (fr) Procédé de préparation d'hydrazine anhydre
FR1223635A (fr) Procédé de traitement de solutions d'amino-acides
FR1214581A (fr) Procédé de préparation d'hydrate d'hydrazine
ES281858A1 (es) Un procedimiento para la eliminación de biuret a partir de una solución saturada de urea que contiene biuret
FR1201027A (fr) Procédé de traitement des solutions aqueuses diluées d'hydrazine
FR1160629A (fr) Procédé de préparation des dialkylhydrazines dissymétriques
FR1315348A (fr) Procédé de préparation d'hydrate d'hydrazine
CH378876A (fr) Procédé de préparation des sels alcalins du 3,5-disulfamylbenzoate de testostérone
ES211140A1 (es) Un procedimiento, con su instalación correspondiente, para la obtención de productos cristalizados
ES345631A1 (es) Un procedimiento para la cristalizacion continua de urea.
FR1175310A (fr) Procédé de préparation de téréphtalate de di-(2-hydroxyéthyle)
BE560701A (fr) Procédé de préparation de mélanges d'amino-acides
FR78095E (fr) Procédé de préparation d'hydrate d'hydrazine
ES323414A1 (es) Procedimiento para preparar fosfato de estaño y fosfato de titanio.
ES280126A1 (es) Un procedimiento para cristalizar dextrosa hidratada
GB779742A (en) Crystallisation of salt
ES265729A1 (es) Un procedimiento de fabricaciën de sustancias aditivas para la obtenciën de coloraciones irisadas en las placas de termoplastico
FR1177946A (fr) Procédé de cristallisation du sel
FR1181752A (fr) Procédé de préparation de monohydrate d'acide gluconique
ES249808A1 (es) Procedimiento de obtenciën de urea
BE592989R (fr) Procédé de préparation d'hydrate d'hydrazine
GB973119A (en) Improvements in and relating to crystallizing devices
GB1521508A (en) Methods for reducing the water requirement and eliminating the discharge of impurities in the treatment of fibrous plant material with alkali in aqueous solution in order to enhance and improve the feed value of the plant material