AR026497A1 - Procedimiento para la purificacion de la melamina - Google Patents
Procedimiento para la purificacion de la melaminaInfo
- Publication number
- AR026497A1 AR026497A1 ARP000106046A ARP000106046A AR026497A1 AR 026497 A1 AR026497 A1 AR 026497A1 AR P000106046 A ARP000106046 A AR P000106046A AR P000106046 A ARP000106046 A AR P000106046A AR 026497 A1 AR026497 A1 AR 026497A1
- Authority
- AR
- Argentina
- Prior art keywords
- melamine
- solution
- products
- purification
- subjecting
- Prior art date
Links
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Un procedimiento para la purificacion de la melamina, que deriva de la urea, de acuerdo con un procedimiento no catalítico de alta presion, por medio de latransformacion de los policondensados y otros subproductos, dichos subproductos derivan de la s íntesis de la melamina, que comprende los siguientes pasos:disolver en agua la melamina en bruto líquida que contiene policondensados y otros subproductos de la síntesis de la melamina; someter dicha solucion a untratamiento que tenga la capacidad de eliminar el CO2 disuelto, limitando su concentracion a un valor por debajo del 0,5% en peso; someter dicha solucion demelamina en bruto a la accion del amoníaco en un nivel dentro de la escala de entre 5 y 25% en peso a una temperatura dentro de la escala de 100 a 250 degree C, ydejar que la mezcla reaccione durante unos minutos; recuperar una solucion que tiene una conentracion de policondensados inferior a 1.000 ppm, típicamente pordebajo de 100 ppm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999MI002388A IT1315255B1 (it) | 1999-11-16 | 1999-11-16 | Procedimento di purificazione della melammina. |
Publications (1)
Publication Number | Publication Date |
---|---|
AR026497A1 true AR026497A1 (es) | 2003-02-12 |
Family
ID=11383963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP000106046A AR026497A1 (es) | 1999-11-16 | 2000-11-16 | Procedimiento para la purificacion de la melamina |
Country Status (16)
Country | Link |
---|---|
US (1) | US6774234B1 (es) |
EP (1) | EP1230226B1 (es) |
CN (1) | CN1263747C (es) |
AR (1) | AR026497A1 (es) |
AT (1) | ATE424389T1 (es) |
AU (1) | AU1883701A (es) |
DE (1) | DE60041709D1 (es) |
EA (1) | EA005007B1 (es) |
EG (1) | EG22361A (es) |
ES (1) | ES2323847T3 (es) |
IT (1) | IT1315255B1 (es) |
MY (1) | MY123710A (es) |
PL (1) | PL200104B1 (es) |
SA (1) | SA00210626B1 (es) |
TW (1) | TW521074B (es) |
WO (1) | WO2001036397A1 (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030028020A1 (en) * | 2001-07-27 | 2003-02-06 | Gupta Ram B. | Process for the synthesis of high purity melamine |
KR20050025132A (ko) | 2001-11-16 | 2005-03-11 | 아엠이-아그로린츠 멜라민 인터내셔날 게엠베하 | 멜렘-비함유 멜라민의 제조 방법 및 냉각기 |
DE102006055571B4 (de) | 2006-11-20 | 2018-09-27 | Urea Casale S.A. | Verfahren und Vorrichtung zur Aufarbeitung einer Melaminschmelze |
EP2098516A1 (en) * | 2008-03-04 | 2009-09-09 | Urea Casale S.A. | Process for the production of high purity melamine from urea |
ITMI20080861A1 (it) * | 2008-05-13 | 2009-11-14 | Eurotecnica Melamine Luxembourg | Processo migliorato per la purificazione della melammina e relativa apparecchiatura |
RU2417992C2 (ru) * | 2009-07-20 | 2011-05-10 | Открытое акционерное общество "Научно-исследовательский и проектный институт карбамида и продуктов органического синтеза" (ОАО "НИИК") | Способ получения меламина и способ удаления растворенных газов из водного раствора неочищенного меламина |
IT1403101B1 (it) * | 2010-12-15 | 2013-10-04 | Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen | Uso di urea contenente formaldeide in un procedimento per la produzione di melammina mediante pirolisi dell'urea e relativo procedimento per la produzione di melammina |
RU2495876C1 (ru) * | 2012-09-10 | 2013-10-20 | Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) | Способ очистки меламина |
CN105709675B (zh) * | 2014-12-11 | 2020-04-10 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | 用于生产三聚氰胺的设备的后反应器及相关方法 |
IT201800007367A1 (it) * | 2018-07-20 | 2020-01-20 | Procedimento a basso consumo energetico e ridotto consumo di ammoniaca per la produzione di melammina a elevata purezza tramite pirolisi dell’urea, e relativo impianto |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161638A (en) * | 1964-12-15 | Filter | ||
NL161750C (nl) * | 1968-11-16 | 1980-03-17 | Stamicarbon | Werkwijze voor het afscheiden van melamine uit een gasvormig reactiemengsel van melamine, ammoniak en kooldioxyde. |
US3637686A (en) * | 1969-02-10 | 1972-01-25 | Nissan Chemical Ind Ltd | Process for recovering purified melamine |
NL8201479A (nl) | 1982-04-07 | 1983-11-01 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
NL9002606A (nl) * | 1990-11-29 | 1992-06-16 | Stamicarbon | Proces voor de bereiding van melamine uit ureum. |
IT1261841B (it) | 1993-08-23 | 1996-06-03 | Conser Spa | Procedimento per la produzione di melammina ad alta purezza. |
US5384404A (en) * | 1993-11-05 | 1995-01-24 | Lee; Jing M. | Process for manufacturing melamine from urea |
AT402294B (de) * | 1994-12-23 | 1997-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
AT402296B (de) * | 1995-02-03 | 1997-03-25 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melamin |
NL1010316C2 (nl) * | 1998-10-14 | 1999-09-23 | Dsm Nv | Werkwijze voor de bereiding van melamine. |
-
1999
- 1999-11-16 IT IT1999MI002388A patent/IT1315255B1/it active
-
2000
- 2000-11-03 WO PCT/IT2000/000443 patent/WO2001036397A1/en active Search and Examination
- 2000-11-03 PL PL355580A patent/PL200104B1/pl unknown
- 2000-11-03 ES ES00981608T patent/ES2323847T3/es not_active Expired - Lifetime
- 2000-11-03 AU AU18837/01A patent/AU1883701A/en not_active Abandoned
- 2000-11-03 DE DE60041709T patent/DE60041709D1/de not_active Expired - Lifetime
- 2000-11-03 US US10/130,517 patent/US6774234B1/en not_active Expired - Lifetime
- 2000-11-03 AT AT00981608T patent/ATE424389T1/de not_active IP Right Cessation
- 2000-11-03 CN CNB008157030A patent/CN1263747C/zh not_active Expired - Lifetime
- 2000-11-03 EA EA200200570A patent/EA005007B1/ru not_active IP Right Cessation
- 2000-11-03 EP EP00981608A patent/EP1230226B1/en not_active Expired - Lifetime
- 2000-11-04 TW TW089123267A patent/TW521074B/zh not_active IP Right Cessation
- 2000-11-09 MY MYPI20005256A patent/MY123710A/en unknown
- 2000-11-14 EG EG20001421A patent/EG22361A/xx active
- 2000-11-16 AR ARP000106046A patent/AR026497A1/es unknown
- 2000-12-16 SA SA00210626A patent/SA00210626B1/ar unknown
Also Published As
Publication number | Publication date |
---|---|
SA00210626B1 (ar) | 2006-11-19 |
EA200200570A1 (ru) | 2002-12-26 |
ATE424389T1 (de) | 2009-03-15 |
WO2001036397A1 (en) | 2001-05-25 |
ITMI992388A0 (it) | 1999-11-16 |
EP1230226B1 (en) | 2009-03-04 |
DE60041709D1 (de) | 2009-04-16 |
CN1407974A (zh) | 2003-04-02 |
EG22361A (en) | 2002-12-31 |
ITMI992388A1 (it) | 2001-05-16 |
PL200104B1 (pl) | 2008-12-31 |
CN1263747C (zh) | 2006-07-12 |
EP1230226A1 (en) | 2002-08-14 |
ES2323847T3 (es) | 2009-07-27 |
US6774234B1 (en) | 2004-08-10 |
EA005007B1 (ru) | 2004-10-28 |
MY123710A (en) | 2006-05-31 |
PL355580A1 (en) | 2004-05-04 |
IT1315255B1 (it) | 2003-02-03 |
AU1883701A (en) | 2001-05-30 |
TW521074B (en) | 2003-02-21 |
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Legal Events
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