ITMI20021026A1 - Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione - Google Patents
Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazioneInfo
- Publication number
- ITMI20021026A1 ITMI20021026A1 IT2002MI001026A ITMI20021026A ITMI20021026A1 IT MI20021026 A1 ITMI20021026 A1 IT MI20021026A1 IT 2002MI001026 A IT2002MI001026 A IT 2002MI001026A IT MI20021026 A ITMI20021026 A IT MI20021026A IT MI20021026 A1 ITMI20021026 A1 IT MI20021026A1
- Authority
- IT
- Italy
- Prior art keywords
- melamine
- urea
- free
- gas
- production process
- Prior art date
Links
- 229920000877 Melamine resin Polymers 0.000 title 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title 1
- 239000004202 carbamide Substances 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title 1
- 238000000926 separation method Methods 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
- C08G12/32—Melamines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2002MI001026A ITMI20021026A1 (it) | 2002-05-14 | 2002-05-14 | Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione |
| AU2003232234A AU2003232234A1 (en) | 2002-05-14 | 2003-04-29 | Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step |
| EP03749861A EP1504045A1 (en) | 2002-05-14 | 2003-04-29 | Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step |
| CNB038132893A CN1300122C (zh) | 2002-05-14 | 2003-04-29 | 由脲生产三聚氰胺的方法、特别是在第一分离步骤中得到不含三聚氰胺的尾气的方法 |
| PCT/EP2003/004556 WO2003095516A1 (en) | 2002-05-14 | 2003-04-29 | Process for the production of melamine from urea, and particularly to obtain melamine-free off-gas in the first separation step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2002MI001026A ITMI20021026A1 (it) | 2002-05-14 | 2002-05-14 | Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ITMI20021026A0 ITMI20021026A0 (it) | 2002-05-14 |
| ITMI20021026A1 true ITMI20021026A1 (it) | 2003-11-14 |
Family
ID=11449893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2002MI001026A ITMI20021026A1 (it) | 2002-05-14 | 2002-05-14 | Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1504045A1 (it) |
| CN (1) | CN1300122C (it) |
| AU (1) | AU2003232234A1 (it) |
| IT (1) | ITMI20021026A1 (it) |
| WO (1) | WO2003095516A1 (it) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2344125C2 (ru) | 2004-02-20 | 2009-01-20 | Уреа Касале С.А. | Способ и установка для совместного получения мочевины и меламина |
| ITMI20082294A1 (it) * | 2008-12-22 | 2010-06-23 | Eurotecnica Melamine Luxemburg Zwe Igniederlassun | Procedimento migliorato per la produzione di melammina ad elevata purezza mediante pirolisi dell'urea |
| IT1400090B1 (it) * | 2010-05-06 | 2013-05-17 | Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen | Procedimento a basso consumo energetico per la produzione di melammina ad elevata purezza tramite pirolisi dell'urea, e relativa apparecchiatura |
| EP2399669A1 (en) * | 2010-06-24 | 2011-12-28 | Borealis Agrolinz Melamine GmbH | Horizontal high-pressure melamine reactor |
| US9869403B2 (en) | 2011-05-09 | 2018-01-16 | Hamilton Sundstrand Corporation | Valve having pressure-relieving vent passage |
| HUE053647T2 (hu) | 2015-04-23 | 2021-07-28 | Stamicarbon | Módszer és rendszer a karbamid és a melamin integrált elõállításához |
| EP3208264A1 (en) | 2016-02-19 | 2017-08-23 | Casale SA | Method for revamping a high pressure melamine plant |
| CN109761922B (zh) * | 2017-11-09 | 2023-11-21 | 欧技三聚氰胺有限公司 | 通过脲的热解生产高纯度三聚氰胺的改进方法和相关装置 |
| CN110613952A (zh) * | 2019-11-06 | 2019-12-27 | 河南省中原大化集团有限责任公司 | 一种新型结晶器配氨装置及配氨方法 |
| WO2025186482A2 (en) | 2024-06-28 | 2025-09-12 | Casale Sa | A scrubbing section for offgas of a melamine plant |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315442A (en) * | 1964-10-05 | 1967-04-25 | American Cyanamid Co | Quenching of crude melamine gases |
| NL161750C (nl) * | 1968-11-16 | 1980-03-17 | Stamicarbon | Werkwijze voor het afscheiden van melamine uit een gasvormig reactiemengsel van melamine, ammoniak en kooldioxyde. |
| NL8201479A (nl) * | 1982-04-07 | 1983-11-01 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
| AT397214B (de) * | 1992-03-30 | 1994-02-25 | Chemie Linz Gmbh | Vorrichtung zur abscheidung von melamin |
| US5384404A (en) * | 1993-11-05 | 1995-01-24 | Lee; Jing M. | Process for manufacturing melamine from urea |
| NL1003328C2 (nl) * | 1996-06-13 | 1997-12-17 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| ES2209560T3 (es) * | 1998-11-13 | 2004-06-16 | Ami Agrolinz Melamine International Gmbh | Procedimiento para la obtencion de melamina pura. |
-
2002
- 2002-05-14 IT IT2002MI001026A patent/ITMI20021026A1/it unknown
-
2003
- 2003-04-29 CN CNB038132893A patent/CN1300122C/zh not_active Expired - Lifetime
- 2003-04-29 AU AU2003232234A patent/AU2003232234A1/en not_active Abandoned
- 2003-04-29 EP EP03749861A patent/EP1504045A1/en not_active Withdrawn
- 2003-04-29 WO PCT/EP2003/004556 patent/WO2003095516A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003095516A1 (en) | 2003-11-20 |
| EP1504045A1 (en) | 2005-02-09 |
| CN1300122C (zh) | 2007-02-14 |
| AU2003232234A1 (en) | 2003-11-11 |
| ITMI20021026A0 (it) | 2002-05-14 |
| CN1659201A (zh) | 2005-08-24 |
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