IL44844A - Process for reducing the biuret content in urea - Google Patents
Process for reducing the biuret content in ureaInfo
- Publication number
- IL44844A IL44844A IL44844A IL4484474A IL44844A IL 44844 A IL44844 A IL 44844A IL 44844 A IL44844 A IL 44844A IL 4484474 A IL4484474 A IL 4484474A IL 44844 A IL44844 A IL 44844A
- Authority
- IL
- Israel
- Prior art keywords
- urea
- biuret
- resin
- ion
- column
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 92
- 239000004202 carbamide Substances 0.000 title claims description 91
- 238000000034 method Methods 0.000 title claims description 33
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 title description 56
- 229920005989 resin Polymers 0.000 claims description 58
- 239000011347 resin Substances 0.000 claims description 58
- 238000005342 ion exchange Methods 0.000 claims description 34
- 125000000129 anionic group Chemical group 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 45
- 239000000243 solution Substances 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 230000008929 regeneration Effects 0.000 description 17
- 238000011069 regeneration method Methods 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 239000007788 liquid Substances 0.000 description 14
- 235000011121 sodium hydroxide Nutrition 0.000 description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 239000007795 chemical reaction product Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 2
- 229920001429 chelating resin Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 230000000885 phytotoxic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyamides (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2416173A IT987491B (it) | 1973-05-16 | 1973-05-16 | Procedimento per ridurre il con tenuto di biureto nella urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL44844A0 IL44844A0 (en) | 1974-07-31 |
| IL44844A true IL44844A (en) | 1977-06-30 |
Family
ID=11212301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL44844A IL44844A (en) | 1973-05-16 | 1974-05-16 | Process for reducing the biuret content in urea |
Country Status (11)
| Country | Link |
|---|---|
| ES (1) | ES426364A1 (it) |
| HU (1) | HU172788B (it) |
| IE (1) | IE39971B1 (it) |
| IL (1) | IL44844A (it) |
| IT (1) | IT987491B (it) |
| MW (1) | MW1974A1 (it) |
| NO (1) | NO149133C (it) |
| PH (1) | PH11266A (it) |
| TR (1) | TR17841A (it) |
| YU (1) | YU40426B (it) |
| ZM (1) | ZM7874A1 (it) |
-
1973
- 1973-05-16 IT IT2416173A patent/IT987491B/it active
-
1974
- 1974-05-15 HU HU74GU00000307A patent/HU172788B/hu unknown
- 1974-05-16 IL IL44844A patent/IL44844A/en unknown
- 1974-05-16 TR TR1784174A patent/TR17841A/xx unknown
- 1974-05-16 ES ES426364A patent/ES426364A1/es not_active Expired
- 1974-05-16 PH PH15842A patent/PH11266A/en unknown
- 1974-05-16 MW MW1974A patent/MW1974A1/xx unknown
- 1974-05-16 IE IE104574A patent/IE39971B1/xx unknown
- 1974-05-16 YU YU135574A patent/YU40426B/xx unknown
- 1974-05-16 NO NO741803A patent/NO149133C/no unknown
- 1974-05-16 ZM ZM7874A patent/ZM7874A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IE39971L (en) | 1974-11-16 |
| IE39971B1 (en) | 1979-02-14 |
| NO149133C (no) | 1984-02-29 |
| ZM7874A1 (en) | 1975-02-21 |
| YU135574A (en) | 1982-05-31 |
| NO741803L (no) | 1974-11-19 |
| HU172788B (hu) | 1978-12-28 |
| ES426364A1 (es) | 1976-07-01 |
| MW1974A1 (en) | 1975-04-09 |
| NO149133B (no) | 1983-11-14 |
| TR17841A (tr) | 1976-04-13 |
| IL44844A0 (en) | 1974-07-31 |
| YU40426B (en) | 1986-02-28 |
| IT987491B (it) | 1975-02-20 |
| PH11266A (en) | 1977-11-02 |
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