ES345631A1 - Un procedimiento para la cristalizacion continua de urea. - Google Patents
Un procedimiento para la cristalizacion continua de urea.Info
- Publication number
- ES345631A1 ES345631A1 ES345631A ES345631A ES345631A1 ES 345631 A1 ES345631 A1 ES 345631A1 ES 345631 A ES345631 A ES 345631A ES 345631 A ES345631 A ES 345631A ES 345631 A1 ES345631 A1 ES 345631A1
- Authority
- ES
- Spain
- Prior art keywords
- urea
- mother liquor
- biuret
- crystals
- crystallization
- 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
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 8
- 239000004202 carbamide Substances 0.000 title abstract 8
- 238000000034 method Methods 0.000 title abstract 2
- 239000012452 mother liquor Substances 0.000 abstract 6
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 abstract 5
- 238000002425 crystallisation Methods 0.000 abstract 4
- 230000008025 crystallization Effects 0.000 abstract 4
- 239000013078 crystal Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
-
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6613811A NL6613811A (es) | 1966-09-30 | 1966-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES345631A1 true ES345631A1 (es) | 1968-11-16 |
Family
ID=19797808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES345631A Expired ES345631A1 (es) | 1966-09-30 | 1967-09-30 | Un procedimiento para la cristalizacion continua de urea. |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE704503A (es) |
| DE (1) | DE1668700A1 (es) |
| DK (1) | DK117558B (es) |
| ES (1) | ES345631A1 (es) |
| GB (1) | GB1141419A (es) |
| NL (1) | NL6613811A (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4015503A1 (en) * | 2020-12-16 | 2022-06-22 | Casale Sa | Process for producing urea and biuret |
-
1966
- 1966-09-30 NL NL6613811A patent/NL6613811A/xx unknown
-
1967
- 1967-09-27 GB GB4403467A patent/GB1141419A/en not_active Expired
- 1967-09-28 DE DE19671668700 patent/DE1668700A1/de active Pending
- 1967-09-29 BE BE704503D patent/BE704503A/xx unknown
- 1967-09-29 DK DK487467A patent/DK117558B/da unknown
- 1967-09-30 ES ES345631A patent/ES345631A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE704503A (es) | 1968-03-29 |
| NL6613811A (es) | 1968-04-01 |
| DK117558B (da) | 1970-05-11 |
| GB1141419A (en) | 1969-01-29 |
| DE1668700A1 (de) | 1971-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES386924A1 (es) | Perfeccionamientos en la construccion de plantas utilizablesen la reduccion del contenido en impurezas del agua impura. | |
| BE763438A (fr) | Procede de congelation de gouttelettes de solution | |
| GB1010840A (en) | A process of recovering alkali metal dithionite from a solution thereof by cooling and crystallizing | |
| GB1141419A (en) | Process for the crystallization of urea | |
| GB954341A (en) | Crystallization of urea | |
| ES386356A1 (es) | Un procedimiento para cristalizar un componente cristaliza-ble a partir de una solucion del mismo. | |
| GB1359347A (en) | Process for the production of1-nitroanthraquinone | |
| GB1389856A (en) | Crystallisation of fructose | |
| GB1236081A (en) | Method of crystallization | |
| GR33978B (el) | Μεθοδος δια την ληψιν ουριας χαμηλης περιεκτικοτητος εις διουριαν. | |
| ES336907A1 (es) | Un procedimiento para la manufactura de un fertilizante de biuret. | |
| GB1334871A (en) | Urea crystals pellets prills and the like | |
| GB1133629A (en) | Freeze concentration of tea | |
| ES378040A1 (es) | Procedimiento para la fabricacion de acido borico. | |
| GR36579B (el) | Μεθοδος και εγκαταστασις δια την παραγωγην ουριας. | |
| GB1001750A (en) | A process for isolating zinc glutamate | |
| ES281858A1 (es) | Un procedimiento para la eliminación de biuret a partir de una solución saturada de urea que contiene biuret | |
| GB653970A (en) | A process for lowering the calcium nitrate content of a solution of raw phosphate in nitric acid | |
| GB1283894A (en) | Cyclic process for preparing and working up a hydroxylammonium salt solution | |
| FR1419458A (fr) | Procédé et évaporateur pour la récupération continue de cristaux à partir de sels organiques | |
| FR2064277A1 (en) | Continuous crystallisation procedure | |
| NL6914589A (en) | Cooling crystallizer | |
| GB1038005A (en) | Purification of p-aminophenol | |
| FR2044488A6 (en) | Recovery of crystalline terephthalic acid by controlled | |
| ES327174A3 (es) | Procedimiento para producir acido glutamico de un caldo de fermentacion. |