NO312545B1 - Fremgangsmåte ved fremstilling av urea - Google Patents
Fremgangsmåte ved fremstilling av urea Download PDFInfo
- Publication number
- NO312545B1 NO312545B1 NO19993698A NO993698A NO312545B1 NO 312545 B1 NO312545 B1 NO 312545B1 NO 19993698 A NO19993698 A NO 19993698A NO 993698 A NO993698 A NO 993698A NO 312545 B1 NO312545 B1 NO 312545B1
- Authority
- NO
- Norway
- Prior art keywords
- urea
- pressure
- melamine
- reactor
- ammonia
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000004202 carbamide Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 91
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 74
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 74
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 44
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 37
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 32
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 32
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 31
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims abstract description 19
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 19
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 30
- 241000196324 Embryophyta Species 0.000 description 29
- 238000009833 condensation Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000032683 aging Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910001868 water Inorganic materials 0.000 description 7
- 239000002826 coolant Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- YZEZMSPGIPTEBA-UHFFFAOYSA-N 2-n-(4,6-diamino-1,3,5-triazin-2-yl)-1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(NC=2N=C(N)N=C(N)N=2)=N1 YZEZMSPGIPTEBA-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007306 turnover Effects 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1005118A NL1005118C2 (nl) | 1997-01-29 | 1997-01-29 | Werkwijze voor de bereiding van ureum. |
| PCT/NL1998/000036 WO1998032731A1 (en) | 1997-01-29 | 1998-01-20 | Process for preparing urea |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO993698D0 NO993698D0 (no) | 1999-07-29 |
| NO993698L NO993698L (no) | 1999-09-21 |
| NO312545B1 true NO312545B1 (no) | 2002-05-27 |
Family
ID=19764295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19993698A NO312545B1 (no) | 1997-01-29 | 1999-07-29 | Fremgangsmåte ved fremstilling av urea |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US6111138A (de) |
| EP (1) | EP0977731B1 (de) |
| JP (1) | JP4063333B2 (de) |
| KR (1) | KR100522226B1 (de) |
| CN (1) | CN1119326C (de) |
| AT (1) | ATE220392T1 (de) |
| AU (1) | AU726205B2 (de) |
| CA (1) | CA2279235C (de) |
| DE (1) | DE69806475T2 (de) |
| ES (1) | ES2180139T3 (de) |
| ID (1) | ID22135A (de) |
| NL (1) | NL1005118C2 (de) |
| NO (1) | NO312545B1 (de) |
| PL (1) | PL196634B1 (de) |
| TW (1) | TW513396B (de) |
| WO (1) | WO1998032731A1 (de) |
Families Citing this family (30)
| 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. |
| NL1021637C2 (nl) * | 2002-07-29 | 2004-01-30 | Dsm Nv | Werkwijze voor het vergroten van de capaciteit van een ureumfabriek. |
| US8425441B2 (en) * | 2004-12-22 | 2013-04-23 | Ossur Hf | Spacer element for use in an orthopedic or prosthetic device |
| US7794418B2 (en) * | 2004-12-22 | 2010-09-14 | Ossur Hf | Knee brace and method for securing the same |
| US8585623B2 (en) | 2004-12-22 | 2013-11-19 | Ossur Hf | Orthopedic device |
| US7713225B2 (en) | 2004-12-22 | 2010-05-11 | Ossur Hf | Knee brace and method for securing the same |
| US7597675B2 (en) * | 2004-12-22 | 2009-10-06 | össur hf | Knee brace and method for securing the same |
| US8231560B2 (en) * | 2004-12-22 | 2012-07-31 | Ossur Hf | Orthotic device and method for securing the same |
| US8216170B2 (en) | 2004-12-22 | 2012-07-10 | Ossur Hf | Orthopedic device |
| PL1752447T3 (pl) * | 2005-08-10 | 2011-03-31 | Urea Casale Sa | Zintegrowany proces produkcji mocznika i melaminy |
| US7687041B2 (en) * | 2008-02-27 | 2010-03-30 | Kellogg Brown & Root Llc | Apparatus and methods for urea production |
| BRPI0919143B1 (pt) * | 2009-08-21 | 2018-03-13 | Asahi Kasei Chemicals Corporation | Método para produzir pelo menos um o-aril éster de ácido carbâmico n-substituído, e, composição para transferência e armazenamento de um composto tendo um grupo ureído |
| KR101389545B1 (ko) | 2012-04-27 | 2014-05-30 | 제우스산업 주식회사 | 암모니아 가스를 재사용하여 글리세롤로부터 글리세롤 카보네이트를 제조하는 방법 |
| EP2919603B1 (de) | 2012-11-13 | 2016-09-21 | Össur HF | Befestigungselement zur befestigung an einer struktur in einer orthopädischen vorrichtung und verfahren zur befestigung davon |
| EP2941226B1 (de) | 2013-01-07 | 2017-09-06 | Ossur Hf | Orthopädische vorrichtung und verfahren zur befestigung davon |
| US9364365B2 (en) | 2013-01-31 | 2016-06-14 | Ossur Hf | Progressive force strap assembly for use with an orthopedic device |
| US9375341B2 (en) | 2013-01-31 | 2016-06-28 | Ossur Hf | Orthopedic device having detachable components for treatment stages and method for using the same |
| WO2014168910A1 (en) | 2013-04-08 | 2014-10-16 | Ossur Hf | Strap attachment system for orthopedic device |
| EP3242642B1 (de) | 2015-01-06 | 2020-10-07 | Ossur Iceland EHF | Orthopädische vorrichtung zur behandlung von osteoarthritis des knies |
| US11850175B2 (en) | 2016-06-06 | 2023-12-26 | Ossur Iceland Ehf | Orthopedic device, strap system and method for securing the same |
| US11253384B2 (en) | 2016-06-06 | 2022-02-22 | Ossur Iceland Ehf | Orthopedic device, strap system and method for securing the same |
| EP3691578B1 (de) | 2017-10-06 | 2023-09-13 | Ossur Iceland EHF | Orthopädische vorrichtung zur knieentlastung |
| IT201800006795A1 (it) * | 2018-06-29 | 2019-12-29 | Procedimento di conversione diretta di off-gas anidri da impianti melammina in urea | |
| USD882803S1 (en) | 2018-10-08 | 2020-04-28 | Ossur Iceland Ehf | Orthopedic shell |
| USD908458S1 (en) | 2018-10-08 | 2021-01-26 | Ossur Iceland Ehf | Hinge cover |
| USD888258S1 (en) | 2018-10-08 | 2020-06-23 | Ossur Iceland Ehf | Connector assembly |
| US11872150B2 (en) | 2020-12-28 | 2024-01-16 | Ossur Iceland Ehf | Sleeve and method for use with orthopedic device |
| WO2024112196A1 (en) | 2022-11-22 | 2024-05-30 | Stamicarbon B.V. | Coupled urea melamine plant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| US3723430A (en) * | 1970-10-28 | 1973-03-27 | Nissan Chemical Ind Ltd | Method for reclamation of melamine waste gas |
| US4433146A (en) * | 1982-04-07 | 1984-02-21 | Stamicarbon B.V. | Process for the preparation of melamine |
| NL8400839A (nl) * | 1984-03-16 | 1985-10-16 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
-
1997
- 1997-01-29 NL NL1005118A patent/NL1005118C2/nl not_active IP Right Cessation
-
1998
- 1998-01-20 PL PL334875A patent/PL196634B1/pl unknown
- 1998-01-20 ID IDW990763A patent/ID22135A/id unknown
- 1998-01-20 CN CN98803584A patent/CN1119326C/zh not_active Expired - Fee Related
- 1998-01-20 CA CA002279235A patent/CA2279235C/en not_active Expired - Fee Related
- 1998-01-20 AU AU55788/98A patent/AU726205B2/en not_active Ceased
- 1998-01-20 ES ES98900772T patent/ES2180139T3/es not_active Expired - Lifetime
- 1998-01-20 TW TW087100694A patent/TW513396B/zh not_active IP Right Cessation
- 1998-01-20 KR KR10-1999-7006744A patent/KR100522226B1/ko not_active IP Right Cessation
- 1998-01-20 AT AT98900772T patent/ATE220392T1/de active
- 1998-01-20 WO PCT/NL1998/000036 patent/WO1998032731A1/en active IP Right Grant
- 1998-01-20 DE DE69806475T patent/DE69806475T2/de not_active Expired - Lifetime
- 1998-01-20 EP EP98900772A patent/EP0977731B1/de not_active Expired - Lifetime
- 1998-01-20 JP JP53185498A patent/JP4063333B2/ja not_active Expired - Fee Related
-
1999
- 1999-07-28 US US09/361,710 patent/US6111138A/en not_active Expired - Lifetime
- 1999-07-29 NO NO19993698A patent/NO312545B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ID22135A (id) | 1999-09-09 |
| JP2001509159A (ja) | 2001-07-10 |
| DE69806475D1 (de) | 2002-08-14 |
| PL334875A1 (en) | 2000-03-27 |
| ES2180139T3 (es) | 2003-02-01 |
| EP0977731B1 (de) | 2002-07-10 |
| DE69806475T2 (de) | 2003-02-27 |
| AU5578898A (en) | 1998-08-18 |
| US6111138A (en) | 2000-08-29 |
| CN1251088A (zh) | 2000-04-19 |
| EP0977731A1 (de) | 2000-02-09 |
| KR100522226B1 (ko) | 2005-10-17 |
| CA2279235C (en) | 2006-12-12 |
| TW513396B (en) | 2002-12-11 |
| NO993698D0 (no) | 1999-07-29 |
| WO1998032731A1 (en) | 1998-07-30 |
| NL1005118C2 (nl) | 1998-07-30 |
| ATE220392T1 (de) | 2002-07-15 |
| CA2279235A1 (en) | 1998-07-30 |
| JP4063333B2 (ja) | 2008-03-19 |
| PL196634B1 (pl) | 2008-01-31 |
| AU726205B2 (en) | 2000-11-02 |
| KR20000070500A (ko) | 2000-11-25 |
| CN1119326C (zh) | 2003-08-27 |
| NO993698L (no) | 1999-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |