BR112022015714A2 - Processo de têmpera de gases de síntese de melamina - Google Patents
Processo de têmpera de gases de síntese de melaminaInfo
- Publication number
- BR112022015714A2 BR112022015714A2 BR112022015714A BR112022015714A BR112022015714A2 BR 112022015714 A2 BR112022015714 A2 BR 112022015714A2 BR 112022015714 A BR112022015714 A BR 112022015714A BR 112022015714 A BR112022015714 A BR 112022015714A BR 112022015714 A2 BR112022015714 A2 BR 112022015714A2
- Authority
- BR
- Brazil
- Prior art keywords
- melamine
- gases
- temperating
- synthesis gases
- residual
- 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
- C07D251/56—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)
Abstract
PROCESSO DE TÊMPERA DE GASES DE SÍNTESE DE MELAMINA. Um processo para a síntese de melamina a partir de ureia, preferencialmente do tipo de alta pressão, em que a têmpera de gás residual é realizada em um recipiente de têmpera, em que na parte superior do recipiente, um fluxo ascendente de gás residual é contatado em contracorrente com amônia líquida para obter a precipitação da melamina contida nos gases residuais e dos gases residuais anidros lavados isentos de melamina; na parte inferior do recipiente, a melamina sólida é colocada em contato com um solvente líquido para formar uma solução de melamina ou uma pasta de melamina.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20163999 | 2020-03-18 | ||
| PCT/EP2021/055130 WO2021185564A1 (en) | 2020-03-18 | 2021-03-02 | Process for quenching offgas of melamine synthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112022015714A2 true BR112022015714A2 (pt) | 2022-09-27 |
Family
ID=69845987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112022015714A BR112022015714A2 (pt) | 2020-03-18 | 2021-03-02 | Processo de têmpera de gases de síntese de melamina |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11858903B2 (pt) |
| EP (1) | EP4121418B1 (pt) |
| CN (1) | CN115135638A (pt) |
| AU (1) | AU2021238440A1 (pt) |
| BR (1) | BR112022015714A2 (pt) |
| CA (1) | CA3168612A1 (pt) |
| WO (1) | WO2021185564A1 (pt) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1670286A1 (de) * | 1967-11-11 | 1971-01-28 | Basf Ag | Verfahren zur Aufarbeitung der bei der Melaminsynthese anfallenden Abgase |
| AT410794B (de) * | 2001-11-16 | 2003-07-25 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von offgasen einer melaminanlage |
| ITMI20020615A1 (it) * | 2002-03-25 | 2003-09-25 | Eurotecnica Dev & Licensing S | Processo di produzione di melammina da aurea e particolarmente per laseparazione della melammina degli off-gas |
| DE102005023042B4 (de) | 2005-05-06 | 2007-10-31 | Lurgi Ag | Verfahren zur Herstellung von Melamin |
| CN201906557U (zh) * | 2010-12-23 | 2011-07-27 | 山东三和化工有限公司 | 一种三聚氰胺生产尾气中的二氧化碳吸收塔 |
| US9040755B2 (en) * | 2011-12-15 | 2015-05-26 | Council Of Scientific And Industrial Research | Hydrogenation of styrene oxide forming 2-phenyl ethanol |
| EP2940006A1 (en) * | 2014-04-28 | 2015-11-04 | Casale Sa | Process and plant for the synthesis of urea and melamine |
| EP3272743A1 (en) * | 2016-07-22 | 2018-01-24 | Casale SA | Process for melamine purification |
-
2021
- 2021-03-02 BR BR112022015714A patent/BR112022015714A2/pt unknown
- 2021-03-02 CA CA3168612A patent/CA3168612A1/en active Pending
- 2021-03-02 AU AU2021238440A patent/AU2021238440A1/en active Pending
- 2021-03-02 CN CN202180015492.XA patent/CN115135638A/zh active Pending
- 2021-03-02 US US17/912,445 patent/US11858903B2/en active Active
- 2021-03-02 EP EP21708016.7A patent/EP4121418B1/en active Active
- 2021-03-02 WO PCT/EP2021/055130 patent/WO2021185564A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021185564A1 (en) | 2021-09-23 |
| CN115135638A (zh) | 2022-09-30 |
| AU2021238440A1 (en) | 2022-08-04 |
| EP4121418A1 (en) | 2023-01-25 |
| CA3168612A1 (en) | 2021-09-23 |
| EP4121418B1 (en) | 2024-02-14 |
| US11858903B2 (en) | 2024-01-02 |
| US20230125818A1 (en) | 2023-04-27 |
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