DE69704949D1 - Verfahren zur herstellung von harnstoff - Google Patents
Verfahren zur herstellung von harnstoffInfo
- Publication number
- DE69704949D1 DE69704949D1 DE69704949T DE69704949T DE69704949D1 DE 69704949 D1 DE69704949 D1 DE 69704949D1 DE 69704949 T DE69704949 T DE 69704949T DE 69704949 T DE69704949 T DE 69704949T DE 69704949 D1 DE69704949 D1 DE 69704949D1
- Authority
- DE
- Germany
- Prior art keywords
- urea
- synthesis
- gas stream
- melamine
- producing urea
- 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.)
- Revoked
Links
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
- C07C273/12—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 combined with the synthesis 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
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1003923A NL1003923C2 (nl) | 1996-08-30 | 1996-08-30 | Werkwijze voor de bereiding van ureum. |
NL1004475A NL1004475C2 (nl) | 1996-11-08 | 1996-11-08 | Werkwijze voor de bereiding van ureum. |
PCT/NL1997/000493 WO1998008808A1 (en) | 1996-08-30 | 1997-08-29 | Process for the preparation of urea |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69704949D1 true DE69704949D1 (de) | 2001-06-28 |
DE69704949T2 DE69704949T2 (de) | 2001-10-31 |
Family
ID=26642434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69704949T Revoked DE69704949T2 (de) | 1996-08-30 | 1997-08-29 | Verfahren zur herstellung von harnstoff |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0923541B1 (de) |
JP (1) | JP2000516949A (de) |
KR (1) | KR100499250B1 (de) |
CN (1) | CN1077884C (de) |
AT (1) | ATE201396T1 (de) |
AU (1) | AU713191B2 (de) |
CA (1) | CA2264135C (de) |
DE (1) | DE69704949T2 (de) |
ES (1) | ES2158576T3 (de) |
ID (1) | ID18250A (de) |
MY (1) | MY129419A (de) |
NO (1) | NO312291B1 (de) |
PL (1) | PL331925A1 (de) |
SA (1) | SA97180416B1 (de) |
TW (1) | TW385307B (de) |
WO (1) | WO1998008808A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6380385B1 (en) | 1995-12-07 | 2002-04-30 | Agrolinz Melanin Gmbh | Process for the preparation of pure melamine |
AT411830B (de) | 1998-12-03 | 2004-06-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von harnstoff unter einbindung der melamin-offgase in eine harnstoffanlage |
NL1014280C2 (nl) * | 2000-02-03 | 2001-08-06 | Dsm Nv | Werkwijze voor de bereiding van melamine uit ureum. |
US8472627B2 (en) | 2000-10-30 | 2013-06-25 | Geocodex Llc | System and method for delivering encrypted information in a communication network using location indentity and key tables |
US7120254B2 (en) | 2000-10-30 | 2006-10-10 | Geocodex Llc | Cryptographic system and method for geolocking and securing digital information |
AT409627B (de) * | 2000-12-27 | 2002-09-25 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von offgasen aus einer melaminanlage |
NL1021176C2 (nl) * | 2002-07-29 | 2004-01-30 | Dsm Nv | Werkwijze voor het vergroten van de capaciteit van een ureumfabriek. |
NL1021637C2 (nl) * | 2002-07-29 | 2004-01-30 | Dsm Nv | Werkwijze voor het vergroten van de capaciteit van een ureumfabriek. |
EP1433774A1 (de) * | 2002-12-27 | 2004-06-30 | Koninklijke DSM N.V. | Verfahren zur Reduzierung der Aldehydkonzentration in einer Cyclohexanon- und eine oder mehrere Aldehyd enthaltende Mischung |
EP1716111B2 (de) * | 2004-02-20 | 2022-06-08 | Casale Sa | Integriertes verfahren zur herstellung von harnstoff und melamin |
US7910531B2 (en) | 2004-06-17 | 2011-03-22 | C2C Technologies Llc | Composition and method for producing colored bubbles |
DE602005024680D1 (de) * | 2005-08-10 | 2010-12-23 | Urea Casale Sa | Verfahren zur integrierten Herstellung von Harnstoff und Melamin |
EP1918274A1 (de) * | 2006-11-04 | 2008-05-07 | Urea Casale S.A. | Integriertes Verfahren zur Herstellung von Harnstoff und Melamin |
CN101607168B (zh) * | 2009-07-17 | 2011-05-04 | 聊城市鲁西化工工程设计有限责任公司 | 三聚氰胺尾气处理工艺及设备 |
DE102009052420C5 (de) * | 2009-11-10 | 2014-05-22 | Lurgi Gmbh | Verfahren zur kontinuierlichen Herstellung von Melamin |
CN101774950B (zh) * | 2009-12-25 | 2013-04-17 | 鲁西化工集团股份有限公司 | 一种利用三聚氰胺尾气联产尿素的工艺 |
EA034482B1 (ru) * | 2013-12-17 | 2020-02-12 | Стамикарбон Б.В. | Совмещенное производство карбамида и меламина |
EP2940006A1 (de) * | 2014-04-28 | 2015-11-04 | Casale Sa | Verfahren und Anlage zur Herstellung von Harnstoff und Melamin |
EP3053915A1 (de) * | 2015-02-06 | 2016-08-10 | Casale SA | Methode zur verbesserung einer hochdruck-melamin herstellungsanlage |
WO2016171562A1 (en) * | 2015-04-23 | 2016-10-27 | Stamicarbon B.V. | Method and system for the integrated production of urea and melamine |
CN113476880B (zh) * | 2017-10-27 | 2023-01-24 | 斯塔米卡邦有限公司 | 高压氨基甲酸盐冷凝器 |
CA3077632A1 (en) * | 2017-11-16 | 2019-05-23 | Casale Sa | A method and system for measuring a liquid level in a pressure vessel of a urea synthesis plant |
IT201800006795A1 (it) * | 2018-06-29 | 2019-12-29 | Procedimento di conversione diretta di off-gas anidri da impianti melammina in urea | |
WO2024112199A1 (en) * | 2022-11-22 | 2024-05-30 | Stamicarbon B.V. | Coupled urea melamine production with hp co2 stripping |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1148767A (en) * | 1965-10-25 | 1969-04-16 | Nissan Chemical Ind Ltd | Process for the production of melamine |
US3503970A (en) * | 1967-07-19 | 1970-03-31 | Mitsui Toatsu Chemicals | Integrated process for producing urea and melamine |
DE1770969C3 (de) * | 1968-07-25 | 1978-08-24 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Rückführung der Abgase der Melaminsynthese in die Hamstoffsynthese |
JPS5022020B1 (de) * | 1969-11-01 | 1975-07-28 | ||
US4433146A (en) * | 1982-04-07 | 1984-02-21 | Stamicarbon B.V. | Process for the preparation of melamine |
-
1997
- 1997-08-21 TW TW086111813A patent/TW385307B/zh not_active IP Right Cessation
- 1997-08-28 ID IDP972996A patent/ID18250A/id unknown
- 1997-08-29 MY MYPI97004009A patent/MY129419A/en unknown
- 1997-08-29 PL PL97331925A patent/PL331925A1/xx not_active Application Discontinuation
- 1997-08-29 JP JP10511506A patent/JP2000516949A/ja active Pending
- 1997-08-29 AT AT97937897T patent/ATE201396T1/de not_active IP Right Cessation
- 1997-08-29 CN CN97198961A patent/CN1077884C/zh not_active Expired - Fee Related
- 1997-08-29 CA CA002264135A patent/CA2264135C/en not_active Expired - Fee Related
- 1997-08-29 ES ES97937897T patent/ES2158576T3/es not_active Expired - Lifetime
- 1997-08-29 AU AU40347/97A patent/AU713191B2/en not_active Ceased
- 1997-08-29 DE DE69704949T patent/DE69704949T2/de not_active Revoked
- 1997-08-29 WO PCT/NL1997/000493 patent/WO1998008808A1/en not_active Application Discontinuation
- 1997-08-29 EP EP97937897A patent/EP0923541B1/de not_active Revoked
- 1997-08-29 KR KR10-1999-7001628A patent/KR100499250B1/ko not_active IP Right Cessation
- 1997-09-21 SA SA97180416A patent/SA97180416B1/ar unknown
-
1999
- 1999-02-25 NO NO19990897A patent/NO312291B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69704949T2 (de) | 2001-10-31 |
WO1998008808A1 (en) | 1998-03-05 |
JP2000516949A (ja) | 2000-12-19 |
AU4034797A (en) | 1998-03-19 |
ID18250A (id) | 1998-03-19 |
CN1077884C (zh) | 2002-01-16 |
CA2264135C (en) | 2007-04-24 |
TW385307B (en) | 2000-03-21 |
EP0923541B1 (de) | 2001-05-23 |
ES2158576T3 (es) | 2001-09-01 |
MY129419A (en) | 2007-03-30 |
NO990897D0 (no) | 1999-02-25 |
NO990897L (no) | 1999-04-20 |
PL331925A1 (en) | 1999-08-16 |
KR100499250B1 (ko) | 2005-07-07 |
KR20000035903A (ko) | 2000-06-26 |
NO312291B1 (no) | 2002-04-22 |
SA97180416B1 (ar) | 2006-04-04 |
AU713191B2 (en) | 1999-11-25 |
EP0923541A1 (de) | 1999-06-23 |
ATE201396T1 (de) | 2001-06-15 |
CN1234022A (zh) | 1999-11-03 |
CA2264135A1 (en) | 1998-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DSM IP ASSETS B.V., HEERLEN, NL |
|
8331 | Complete revocation |