CH471089A - Procédé pour obtenir une urée de faible teneur en biuret - Google Patents
Procédé pour obtenir une urée de faible teneur en biuretInfo
- Publication number
- CH471089A CH471089A CH1060067A CH1060067A CH471089A CH 471089 A CH471089 A CH 471089A CH 1060067 A CH1060067 A CH 1060067A CH 1060067 A CH1060067 A CH 1060067A CH 471089 A CH471089 A CH 471089A
- Authority
- CH
- Switzerland
- Prior art keywords
- biuret content
- obtaining urea
- low biuret
- low
- urea
- Prior art date
Links
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
- C07C273/04—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 from carbon dioxide and ammonia
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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 |
|---|---|---|---|
| IT2073366 | 1966-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH471089A true CH471089A (fr) | 1969-04-15 |
Family
ID=11171223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1060067A CH471089A (fr) | 1966-07-27 | 1967-07-25 | Procédé pour obtenir une urée de faible teneur en biuret |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5127659B1 (xx) |
| BE (1) | BE701633A (xx) |
| BR (1) | BR6791527D0 (xx) |
| CH (1) | CH471089A (xx) |
| CS (1) | CS163163B2 (xx) |
| DE (1) | DE1618926B1 (xx) |
| ES (1) | ES343801A1 (xx) |
| GR (1) | GR33978B (xx) |
| LU (1) | LU54171A1 (xx) |
| NL (1) | NL145849B (xx) |
| SE (1) | SE387334B (xx) |
| YU (1) | YU33783B (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2802559B1 (en) | 2012-01-09 | 2016-03-30 | Saipem S.p.A. | Process for the synthesis of urea comprising a passivation stream at the stripper bottom |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139164U (xx) * | 1976-04-13 | 1977-10-21 | ||
| JPS52163463U (xx) * | 1976-06-02 | 1977-12-10 | ||
| JPS6114665U (ja) * | 1984-07-02 | 1986-01-28 | 和也 生駒 | 容器 |
| DE102006059760B4 (de) * | 2006-12-18 | 2009-04-02 | Skw Stickstoffwerke Piesteritz Gmbh | Verfahren zur kontinuierlichen Herstellung von hochreiner Harnstofflösung |
| JP2016064991A (ja) | 2014-09-22 | 2016-04-28 | 東洋エンジニアリング株式会社 | 尿素製造プロセスにおける高純度尿素水溶液の製造方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232984A (en) * | 1961-11-20 | 1966-02-01 | Pullman Inc | Low biuret urea |
| NL291528A (xx) * | 1963-04-11 | |||
| US3255246A (en) * | 1963-06-27 | 1966-06-07 | Du Pont | Synthesis and recovery of urea |
-
1967
- 1967-07-10 GR GR670133978A patent/GR33978B/el unknown
- 1967-07-20 BE BE701633D patent/BE701633A/xx not_active IP Right Cessation
- 1967-07-21 DE DE1967S0110929 patent/DE1618926B1/de not_active Withdrawn
- 1967-07-22 ES ES343801A patent/ES343801A1/es not_active Expired
- 1967-07-24 CS CS5415A patent/CS163163B2/cs unknown
- 1967-07-24 JP JP42047285A patent/JPS5127659B1/ja active Pending
- 1967-07-25 LU LU54171D patent/LU54171A1/xx unknown
- 1967-07-25 CH CH1060067A patent/CH471089A/fr not_active IP Right Cessation
- 1967-07-26 SE SE6710879*A patent/SE387334B/xx unknown
- 1967-07-26 BR BR191527/67A patent/BR6791527D0/pt unknown
- 1967-07-27 NL NL676710422A patent/NL145849B/xx not_active IP Right Cessation
- 1967-07-27 YU YU1507/67A patent/YU33783B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2802559B1 (en) | 2012-01-09 | 2016-03-30 | Saipem S.p.A. | Process for the synthesis of urea comprising a passivation stream at the stripper bottom |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1618926B1 (de) | 1971-01-28 |
| NL145849B (nl) | 1975-05-15 |
| GR33978B (el) | 1968-02-29 |
| CS163163B2 (xx) | 1975-08-29 |
| LU54171A1 (xx) | 1967-09-25 |
| JPS5127659B1 (xx) | 1976-08-13 |
| NL6710422A (xx) | 1968-01-29 |
| BE701633A (xx) | 1968-01-02 |
| SE387334B (sv) | 1976-09-06 |
| YU33783B (en) | 1978-05-15 |
| ES343801A1 (es) | 1968-09-16 |
| BR6791527D0 (pt) | 1973-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |