GB1404098A - Process for reducing the biuret content in urea - Google Patents
Process for reducing the biuret content in ureaInfo
- Publication number
- GB1404098A GB1404098A GB2327273A GB2327273A GB1404098A GB 1404098 A GB1404098 A GB 1404098A GB 2327273 A GB2327273 A GB 2327273A GB 2327273 A GB2327273 A GB 2327273A GB 1404098 A GB1404098 A GB 1404098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- lines
- columns
- resin
- ion
- 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 3
- 239000004202 carbamide Substances 0.000 title abstract 3
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 title 1
- 238000000746 purification Methods 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 abstract 1
- 238000010923 batch production Methods 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 abstract 1
- 239000003456 ion exchange resin Substances 0.000 abstract 1
- 229920003303 ion-exchange polymer Polymers 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000004576 sand 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)
- Phenolic Resins Or Amino Resins (AREA)
Priority Applications (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2327273A GB1404098A (en) | 1973-05-16 | 1973-05-16 | Process for reducing the biuret content in urea |
| AR253709A AR213610A1 (es) | 1973-05-16 | 1974-05-13 | Un procedimiento para eliminar todo contenido indeseado de biuret de urea contenida en una sustancia que comprende biuret y urea |
| BR3961/74A BR7403961D0 (pt) | 1973-05-16 | 1974-05-15 | Processo para reduzir o teor de biureto da ureia |
| EG175/74A EG11437A (en) | 1973-05-16 | 1974-05-15 | Process for reducing the buiret content in urea |
| AU69046/74A AU480560B2 (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
| SU742026956A SU953978A3 (ru) | 1973-05-16 | 1974-05-16 | Способ очистки карбамида от примесей биурета |
| CS743519A CS203001B2 (en) | 1973-05-16 | 1974-05-16 | Method for reducing content of biuret or its metallic complex in urea solution |
| BG026705A BG21603A3 (bg) | 1973-05-16 | 1974-05-16 | Метод за намаляване на количеството биорет в карбамида |
| DD178556A DD113897A5 (enrdf_load_stackoverflow) | 1973-05-16 | 1974-05-16 | |
| BE144365A BE815096A (fr) | 1973-05-16 | 1974-05-16 | Procede pour diminuer la teneur en biuret de l'uree |
| NL7406618A NL7406618A (enrdf_load_stackoverflow) | 1973-05-16 | 1974-05-16 | |
| FR7417058A FR2229690B1 (enrdf_load_stackoverflow) | 1973-05-16 | 1974-05-16 | |
| IN1069/CAL/1974A IN142126B (enrdf_load_stackoverflow) | 1973-05-16 | 1974-05-16 | |
| SE7406519A SE420196B (sv) | 1973-05-16 | 1974-05-16 | Forfarande for minskning av biurethalten i karbamid |
| CH674574A CH617672A5 (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
| LU70102A LU70102A1 (enrdf_load_stackoverflow) | 1973-05-16 | 1974-05-16 | |
| AT406174A AT344723B (de) | 1973-05-16 | 1974-05-16 | Verfahren zur verminderung des biuretgehaltes von harnstoff |
| DE19742423890 DE2423890C3 (de) | 1973-05-16 | 1974-05-16 | Verfahren zur Gewinnung von Harnstoff mit vermindertem Biuretgehalt |
| CA200,114A CA1019344A (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
| ZA00743136A ZA743136B (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2327273A GB1404098A (en) | 1973-05-16 | 1973-05-16 | Process for reducing the biuret content in urea |
| IT2416173A IT987491B (it) | 1973-05-16 | 1973-05-16 | Procedimento per ridurre il con tenuto di biureto nella urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1404098A true GB1404098A (en) | 1975-08-28 |
Family
ID=26256424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2327273A Expired GB1404098A (en) | 1973-05-16 | 1973-05-16 | Process for reducing the biuret content in urea |
Country Status (18)
Cited By (4)
| 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 |
| US7753985B2 (en) | 2004-02-05 | 2010-07-13 | Uhde Gmbh | Reduction of biuret and free ammonia during a method for producing fertilizer granulates containing urea |
| WO2021004713A1 (de) | 2019-07-10 | 2021-01-14 | Thyssenkrupp Industrial Solutions Ag | Reduzierung der biuretgeneration in der harnstoffproduktion |
| CN115738359A (zh) * | 2022-10-20 | 2023-03-07 | 江苏可兰素环保科技有限公司 | 一种尿素颗粒的萃取提纯工艺 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO131559A2 (ro) * | 2011-11-23 | 2016-12-30 | Farid Alekovich Batullin | Metodă pentru obţinerea carbamidei cristaline cu puritate ridicată |
-
1973
- 1973-05-16 GB GB2327273A patent/GB1404098A/en not_active Expired
-
1974
- 1974-05-13 AR AR253709A patent/AR213610A1/es active
- 1974-05-15 BR BR3961/74A patent/BR7403961D0/pt unknown
- 1974-05-15 EG EG175/74A patent/EG11437A/xx active
- 1974-05-16 BE BE144365A patent/BE815096A/xx not_active IP Right Cessation
- 1974-05-16 NL NL7406618A patent/NL7406618A/xx active Search and Examination
- 1974-05-16 AT AT406174A patent/AT344723B/de not_active IP Right Cessation
- 1974-05-16 SU SU742026956A patent/SU953978A3/ru active
- 1974-05-16 BG BG026705A patent/BG21603A3/xx unknown
- 1974-05-16 IN IN1069/CAL/1974A patent/IN142126B/en unknown
- 1974-05-16 DD DD178556A patent/DD113897A5/xx unknown
- 1974-05-16 SE SE7406519A patent/SE420196B/xx not_active IP Right Cessation
- 1974-05-16 CS CS743519A patent/CS203001B2/cs unknown
- 1974-05-16 LU LU70102A patent/LU70102A1/xx unknown
- 1974-05-16 CH CH674574A patent/CH617672A5/it not_active IP Right Cessation
- 1974-05-16 FR FR7417058A patent/FR2229690B1/fr not_active Expired
- 1974-05-16 CA CA200,114A patent/CA1019344A/en not_active Expired
- 1974-05-16 ZA ZA00743136A patent/ZA743136B/xx unknown
Cited By (4)
| 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 |
| US7753985B2 (en) | 2004-02-05 | 2010-07-13 | Uhde Gmbh | Reduction of biuret and free ammonia during a method for producing fertilizer granulates containing urea |
| WO2021004713A1 (de) | 2019-07-10 | 2021-01-14 | Thyssenkrupp Industrial Solutions Ag | Reduzierung der biuretgeneration in der harnstoffproduktion |
| CN115738359A (zh) * | 2022-10-20 | 2023-03-07 | 江苏可兰素环保科技有限公司 | 一种尿素颗粒的萃取提纯工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| LU70102A1 (enrdf_load_stackoverflow) | 1976-04-13 |
| CH617672A5 (en) | 1980-06-13 |
| ZA743136B (en) | 1975-08-27 |
| SE420196B (sv) | 1981-09-21 |
| BG21603A3 (bg) | 1976-07-20 |
| AU6904674A (en) | 1975-11-20 |
| CS203001B2 (en) | 1981-02-27 |
| NL7406618A (enrdf_load_stackoverflow) | 1974-11-19 |
| DE2423890B2 (de) | 1976-04-15 |
| IN142126B (enrdf_load_stackoverflow) | 1977-06-04 |
| ATA406174A (de) | 1977-12-15 |
| BE815096A (fr) | 1974-11-18 |
| DD113897A5 (enrdf_load_stackoverflow) | 1975-07-05 |
| EG11437A (en) | 1977-08-15 |
| BR7403961D0 (pt) | 1974-12-24 |
| SU953978A3 (ru) | 1982-08-23 |
| AT344723B (de) | 1978-08-10 |
| FR2229690A1 (enrdf_load_stackoverflow) | 1974-12-13 |
| FR2229690B1 (enrdf_load_stackoverflow) | 1976-12-24 |
| CA1019344A (en) | 1977-10-18 |
| DE2423890A1 (de) | 1974-12-12 |
| AR213610A1 (es) | 1979-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |