DE2060929A1 - Verfahren zur Abtrennung von Melamin aus einer heissen Synthesemischung,die Melamindampf enthaelt - Google Patents
Verfahren zur Abtrennung von Melamin aus einer heissen Synthesemischung,die Melamindampf enthaeltInfo
- Publication number
- DE2060929A1 DE2060929A1 DE19702060929 DE2060929A DE2060929A1 DE 2060929 A1 DE2060929 A1 DE 2060929A1 DE 19702060929 DE19702060929 DE 19702060929 DE 2060929 A DE2060929 A DE 2060929A DE 2060929 A1 DE2060929 A1 DE 2060929A1
- Authority
- DE
- Germany
- Prior art keywords
- melamine
- melt
- ammonium carbamate
- urea
- separation
- 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.)
- Pending
Links
- 229920000877 Melamine resin Polymers 0.000 title claims description 73
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims description 73
- 230000015572 biosynthetic process Effects 0.000 title claims description 28
- 238000003786 synthesis reaction Methods 0.000 title claims description 26
- 239000000203 mixture Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 17
- 238000000926 separation method Methods 0.000 title claims description 15
- 239000007789 gas Substances 0.000 claims description 57
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 44
- 239000004202 carbamide Substances 0.000 claims description 44
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims description 39
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 38
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 20
- 239000000155 melt Substances 0.000 claims description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 210000002700 urine Anatomy 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 238000001321 HNCO Methods 0.000 description 1
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WWJROBNVMZSTTG-UHFFFAOYSA-N azanium;urea;carbamate Chemical compound N.NC(N)=O.NC(O)=O WWJROBNVMZSTTG-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/62—Purification of melamine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6918571A NL6918571A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1969-12-11 | 1969-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2060929A1 true DE2060929A1 (de) | 1971-06-16 |
Family
ID=19808596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702060929 Pending DE2060929A1 (de) | 1969-12-11 | 1970-12-10 | Verfahren zur Abtrennung von Melamin aus einer heissen Synthesemischung,die Melamindampf enthaelt |
Country Status (14)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2050740A1 (de) * | 2007-10-15 | 2009-04-22 | Basf Se | Verfahren zur Herstellung von Melamin |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146120B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-08-22 | 1976-12-07 | ||
| US4138560A (en) * | 1975-06-10 | 1979-02-06 | Basf Aktiengesellschaft | Process for cooling melamine synthesis waste gases |
| DE102005023042B4 (de) * | 2005-05-06 | 2007-10-31 | Lurgi Ag | Verfahren zur Herstellung von Melamin |
| US9863725B1 (en) | 2012-02-29 | 2018-01-09 | The United States Of America As Represented By The Secretary Of The Air Force | Systems and methods for thermal management through use of ammonium carbamate |
| CN108465288A (zh) * | 2018-05-07 | 2018-08-31 | 河南省中原大化集团有限责任公司 | 一种物料之间热能交换装置及应用方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3239522A (en) * | 1963-03-12 | 1966-03-08 | Chemical Construction Corp | Synthesis of urea and melamine |
| US3544628A (en) * | 1965-09-20 | 1970-12-01 | Pullman Inc | Urea synthesis |
| NL6809253A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1968-06-29 | 1969-12-31 |
-
0
- BE BE760072D patent/BE760072A/xx unknown
-
1969
- 1969-12-11 NL NL6918571A patent/NL6918571A/xx unknown
-
1970
- 1970-12-07 ZA ZA708239A patent/ZA708239B/xx unknown
- 1970-12-08 GB GB58294/70A patent/GB1275490A/en not_active Expired
- 1970-12-08 FR FR7044094A patent/FR2073065A5/fr not_active Expired
- 1970-12-09 US US96466A patent/US3697519A/en not_active Expired - Lifetime
- 1970-12-09 CH CH1819270A patent/CH543523A/de not_active IP Right Cessation
- 1970-12-10 AT AT1110170A patent/AT301561B/de not_active IP Right Cessation
- 1970-12-10 NO NO4768/70A patent/NO131642C/no unknown
- 1970-12-10 DE DE19702060929 patent/DE2060929A1/de active Pending
- 1970-12-10 ES ES386315A patent/ES386315A1/es not_active Expired
- 1970-12-10 PL PL1970144904A patent/PL73475B1/pl unknown
- 1970-12-11 JP JP45110364A patent/JPS4917271B1/ja active Pending
- 1970-12-11 SE SE7016828A patent/SE381658B/xx unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2050740A1 (de) * | 2007-10-15 | 2009-04-22 | Basf Se | Verfahren zur Herstellung von Melamin |
| WO2009050169A3 (de) * | 2007-10-15 | 2009-07-16 | Basf Se | Verfahren zur herstellung von melamin |
| AU2008313759B2 (en) * | 2007-10-15 | 2013-01-24 | Basf Se | Method for the production of melamine |
| US9598379B2 (en) | 2007-10-15 | 2017-03-21 | Basf Se | Process for preparing melamine |
Also Published As
| Publication number | Publication date |
|---|---|
| NO131642B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-03-24 |
| JPS4917271B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-04-27 |
| CH543523A (de) | 1973-10-31 |
| GB1275490A (en) | 1972-05-24 |
| NO131642C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-07-02 |
| SE381658B (sv) | 1975-12-15 |
| US3697519A (en) | 1972-10-10 |
| NL6918571A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-06-15 |
| FR2073065A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-09-24 |
| ZA708239B (en) | 1971-09-29 |
| BE760072A (fr) | 1971-06-09 |
| AT301561B (de) | 1972-09-11 |
| PL73475B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-10-30 |
| ES386315A1 (es) | 1973-03-16 |
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