ES8606303A1 - Procedimiento continuo para producir melamina a partir de urea - Google Patents
Procedimiento continuo para producir melamina a partir de ureaInfo
- Publication number
- ES8606303A1 ES8606303A1 ES539126A ES539126A ES8606303A1 ES 8606303 A1 ES8606303 A1 ES 8606303A1 ES 539126 A ES539126 A ES 539126A ES 539126 A ES539126 A ES 539126A ES 8606303 A1 ES8606303 A1 ES 8606303A1
- Authority
- ES
- Spain
- Prior art keywords
- melamine
- liquid
- transferred
- gas separator
- ammonia
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/04—Pressure vessels, e.g. autoclaves
- B01J3/042—Pressure vessels, e.g. autoclaves in the form of a tube
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
METODO E INSTALACION PARA LA PRODUCCION DE MELAMINA A PARTIR DE UREA. COMPRENDE PIROLIZAR UREA EN UN REACTOR A UNA PRESION DE 105 A 175 KG/CM2 Y A UNA TEMPERATURA DE 354 A 426JC PARA OBTENER UN PRODUCTO CONSTITUIDO POR MELAMINA LIQUIDA, CO2 Y NH3; TRANSFERIR, BAJO PRESION DICHO PRODUCTO A UNA UNIDAD DE SEPARACION EN LA QUE SE SEPARAN GASES DE CO2 Y NH3 CONTENIENDO VAPORES DE MELAMINA Y MELAMINA LIQUIDA; TRANSFERIR LOS GASES DE CO2 Y NH3 CON MELAMINA A UNA DEPURADORA, DEPURAR LOS GASES CON UREA FUNDIDA, ENFRIAR LOS GASES, SEPARAR DE LOS MISMOS LA MELAMINA, E INTRODUCIR LA UREA PRECALENTADA FUNDIDA Y DICHA MELAMINA EN EL REACTOR; Y LA MELAMINA LIQUIDA EN UNA UNIDAD DE ENFRIAMIENTO; DESPRESURIZAR Y ENFRIAR BRUSCAMENTE LA MELAMINA LIQUIDA, PARA OBTENER MELAMINA SOLIDA. LA MELAMINA TIENE APLICACIONES COMO FERTILIZANTE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US56840884A | 1984-01-05 | 1984-01-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES8606303A1 true ES8606303A1 (es) | 1986-04-16 |
| ES539126A0 ES539126A0 (es) | 1986-04-16 |
Family
ID=24271166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES539126A Expired ES8606303A1 (es) | 1984-01-05 | 1984-12-27 | Procedimiento continuo para producir melamina a partir de urea |
Country Status (16)
| Country | Link |
|---|---|
| JP (2) | JPS60208970A (es) |
| KR (1) | KR920001740B1 (es) |
| AT (1) | AT393124B (es) |
| AU (1) | AU568469B2 (es) |
| BR (1) | BR8500032A (es) |
| CA (1) | CA1220476A (es) |
| EG (1) | EG16900A (es) |
| ES (1) | ES8606303A1 (es) |
| FR (1) | FR2557876B1 (es) |
| GB (1) | GB2152505B (es) |
| IE (1) | IE57911B1 (es) |
| IT (1) | IT1188084B (es) |
| MX (1) | MX164901B (es) |
| NL (1) | NL193832C (es) |
| NO (1) | NO176795C (es) |
| NZ (1) | NZ210678A (es) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514796A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
| NL1002669C2 (nl) * | 1996-03-21 | 1997-09-23 | Dsm Nv | Werkwijze voor de bereiding van melamine. |
| NL1003105C2 (nl) * | 1996-05-14 | 1997-11-18 | Dsm Nv | Werkwijze voor de bereiding van melamine. |
| NL1003328C2 (nl) * | 1996-06-13 | 1997-12-17 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| NL1003709C2 (nl) * | 1996-07-30 | 1998-02-05 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| NL1004814C2 (nl) * | 1996-12-18 | 1998-06-19 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| WO1998027071A1 (en) * | 1996-12-16 | 1998-06-25 | Dsm N.V. | Method for the preparation of melamine |
| NL1008571C2 (nl) * | 1998-03-12 | 1999-07-28 | Dsm Nv | Kristallijn melamine. |
Family Cites Families (4)
| 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 |
| GB1218522A (en) * | 1969-01-24 | 1971-01-06 | Nissan Chemical Ind Ltd | A process for recovering the purified melamine |
| NL7903473A (nl) * | 1979-05-03 | 1980-11-05 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
| NL8201479A (nl) * | 1982-04-07 | 1983-11-01 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
-
1984
- 1984-12-18 IE IE3247/84A patent/IE57911B1/en not_active IP Right Cessation
- 1984-12-18 CA CA000470380A patent/CA1220476A/en not_active Expired
- 1984-12-19 NL NL8403843A patent/NL193832C/nl not_active IP Right Cessation
- 1984-12-20 NZ NZ210678A patent/NZ210678A/en unknown
- 1984-12-26 EG EG817/84A patent/EG16900A/xx active
- 1984-12-27 ES ES539126A patent/ES8606303A1/es not_active Expired
- 1984-12-27 NO NO845248A patent/NO176795C/no not_active IP Right Cessation
- 1984-12-29 JP JP59282026A patent/JPS60208970A/ja active Granted
- 1984-12-31 KR KR1019840008590A patent/KR920001740B1/ko not_active IP Right Cessation
-
1985
- 1985-01-04 AU AU37376/85A patent/AU568469B2/en not_active Expired
- 1985-01-04 AT AT21/85A patent/AT393124B/de not_active IP Right Cessation
- 1985-01-04 IT IT83302/85A patent/IT1188084B/it active
- 1985-01-04 FR FR858500073A patent/FR2557876B1/fr not_active Expired - Lifetime
- 1985-01-04 BR BR8500032A patent/BR8500032A/pt not_active IP Right Cessation
- 1985-01-04 GB GB08500197A patent/GB2152505B/en not_active Expired
- 1985-01-04 MX MX203965A patent/MX164901B/es unknown
-
1996
- 1996-01-24 JP JP8029814A patent/JP2757163B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| MX164901B (es) | 1992-09-30 |
| KR920001740B1 (ko) | 1992-02-24 |
| GB2152505B (en) | 1987-07-29 |
| NL193832B (nl) | 2000-08-01 |
| AT393124B (de) | 1991-08-26 |
| IE843247L (en) | 1985-07-05 |
| JPH0557984B2 (es) | 1993-08-25 |
| ATA2185A (de) | 1991-01-15 |
| CA1220476A (en) | 1987-04-14 |
| FR2557876B1 (fr) | 1991-04-19 |
| EG16900A (en) | 1990-10-30 |
| JP2757163B2 (ja) | 1998-05-25 |
| KR850005425A (ko) | 1985-08-26 |
| JPH0925271A (ja) | 1997-01-28 |
| IT8583302A0 (it) | 1985-01-04 |
| AU568469B2 (en) | 1987-12-24 |
| JPS60208970A (ja) | 1985-10-21 |
| IE57911B1 (en) | 1993-05-19 |
| NL8403843A (nl) | 1985-08-01 |
| GB8500197D0 (en) | 1985-02-13 |
| NO176795C (no) | 1995-05-31 |
| IT1188084B (it) | 1987-12-30 |
| FR2557876A1 (fr) | 1985-07-12 |
| NZ210678A (en) | 1987-03-06 |
| ES539126A0 (es) | 1986-04-16 |
| BR8500032A (pt) | 1985-08-13 |
| AU3737685A (en) | 1985-07-18 |
| GB2152505A (en) | 1985-08-07 |
| NO845248L (no) | 1985-07-08 |
| NL193832C (nl) | 2000-12-04 |
| NO176795B (no) | 1995-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5514796A (en) | Melamine of improved purity produced by high-pressure, non-catalytic process | |
| US4572826A (en) | Two stage process for HCN removal from gaseous streams | |
| RU96112135A (ru) | Меламин повышенной чистоты, полученный при высоком давлении не каталитическим способом | |
| US5721363A (en) | Process for the production of highly pure melamine | |
| AU579614B2 (en) | Process for the preparation of urea | |
| IN158211B (es) | ||
| ES8606303A1 (es) | Procedimiento continuo para producir melamina a partir de urea | |
| GB1348937A (en) | Processing of coke oven gas | |
| ES443998A1 (es) | Procedimiento para el tratamiento de vapor de agua generado al concentrar una solucion acuosa de urea. | |
| ES466103A1 (es) | Un procedimiento para preparar melamina. | |
| US3308123A (en) | Method of separating melamine from waste gas | |
| DE3567846D1 (en) | Process for preparing cyanamide | |
| US4832930A (en) | Decomposition of ammonium thiocyanate | |
| ES8704169A1 (es) | Un procedimiento para separar cafeina de carbon activo cargado con cafeina | |
| KR830001515B1 (ko) | 카르보닐 설파이드의 제법 | |
| ES8304029A1 (es) | "procedimiento para efectuar reacciones quimicas en un reactor de tubo oscilante y reactor para su realizacion". | |
| GB2337259A (en) | Preparation of Melamine | |
| GB1447705A (en) | Process for removing impurites from gases | |
| KR19990010948A (ko) | 개선된 아크릴로니트릴 회수방법 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC1A | Transfer granted | ||
| FD1A | Patent lapsed |
Effective date: 20060206 |