ES281859A1 - Un procedimiento de circulación para cristalización al vacío de urea - Google Patents
Un procedimiento de circulación para cristalización al vacío de ureaInfo
- 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
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
- 238000002425 crystallisation Methods 0.000 title abstract 4
- 230000008025 crystallization Effects 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 abstract 5
- 239000012452 mother liquor Substances 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010790 dilution Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 abstract 1
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)
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)
| 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 |
| US4701555A (en) * | 1985-07-10 | 1987-10-20 | Union Oil Company Of California | Methods for removing biuret from urea by adsorption |
| US4698443A (en) * | 1985-07-10 | 1987-10-06 | Union Oil Company Of California | Biuret purification |
| 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)
| 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 |
-
1962
- 1962-10-18 US US231593A patent/US3185731A/en not_active Expired - Lifetime
- 1962-10-23 DK DK456862AA patent/DK103665C/da active
- 1962-10-24 CH CH1250662A patent/CH421075A/de unknown
- 1962-10-25 ES ES281859A patent/ES281859A1/es not_active Expired
- 1962-10-25 GB GB40500/62A patent/GB954341A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB954341A (en) | 1964-04-02 |
| CH421075A (de) | 1966-09-30 |
| US3185731A (en) | 1965-05-25 |
| DK103665C (da) | 1966-02-07 |
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