ES8504756A1 - Procedimiento para la obtencion de anhidrido de acido maleico a partir de los gases de escape de instalaciones de preparacion de anhidrido de acido ftalico - Google Patents
Procedimiento para la obtencion de anhidrido de acido maleico a partir de los gases de escape de instalaciones de preparacion de anhidrido de acido ftalicoInfo
- Publication number
- ES8504756A1 ES8504756A1 ES527431A ES527431A ES8504756A1 ES 8504756 A1 ES8504756 A1 ES 8504756A1 ES 527431 A ES527431 A ES 527431A ES 527431 A ES527431 A ES 527431A ES 8504756 A1 ES8504756 A1 ES 8504756A1
- Authority
- ES
- Spain
- Prior art keywords
- maleic anhydride
- maleic
- acid
- solution
- anhydride
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
- Furan Compounds (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
PROCEDIMIENTO DE OBTENCION DE ANHIDRIDO DE ACIDO MALEICO COMO PRODUCTO SECUNDARIO EN INSTALACIONES DE PREPARACION DE ANHIDRIDO FTALICO.LOS GASES DE ESCAPE DE LA INSTALACION DE PREPARACION DE ANHIDRIDO DE ACIDO FTALICO CONTENIENDO ANHIDRIDOS DE ACIDOS MALEICO, FTALICO, CITRACONICO Y QUINONAS, SE LAVAN, ENRIQUECIENDOSE LA SOLUCION ACIDA POR UNA CORRIENTE DE RECIRCULACION RICA EN ACIDO MALEICO RESPECTO DE FTALICO ENTRE 17:1 Y 20:1. EL ACIDO FTALICO SE ELIMINA POR CRISTALIZACION EN VACIO Y FILTRACION, OBTENIENDOSE EL ANHIDRIDO POR TRATAMIENTO DE LA SOLUCION ENRIQUECIDA EN ACIDO MALEICO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19637/83A IT1199989B (it) | 1983-02-17 | 1983-02-17 | Procedimento e impianto per il recupero di anidride maleica da gas effluenti da processi di produzione di anidride ftalica |
Publications (2)
Publication Number | Publication Date |
---|---|
ES527431A0 ES527431A0 (es) | 1985-05-01 |
ES8504756A1 true ES8504756A1 (es) | 1985-05-01 |
Family
ID=11159954
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES527432A Expired ES8504161A1 (es) | 1983-02-17 | 1983-11-21 | Dispositivo para la obtencion de anhidrido de acido maleico a partir de los gases de escape de instalaciones de preparacion de anhidrido de acido ftalico |
ES527431A Expired ES8504756A1 (es) | 1983-02-17 | 1983-11-21 | Procedimiento para la obtencion de anhidrido de acido maleico a partir de los gases de escape de instalaciones de preparacion de anhidrido de acido ftalico |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES527432A Expired ES8504161A1 (es) | 1983-02-17 | 1983-11-21 | Dispositivo para la obtencion de anhidrido de acido maleico a partir de los gases de escape de instalaciones de preparacion de anhidrido de acido ftalico |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0119301A3 (es) |
JP (1) | JPS59157079A (es) |
BR (1) | BR8400641A (es) |
ES (2) | ES8504161A1 (es) |
FI (1) | FI834118A (es) |
IT (1) | IT1199989B (es) |
ZA (1) | ZA838768B (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6371362A (ja) * | 1986-09-12 | 1988-03-31 | Ricoh Co Ltd | 印字装置の記録ヘツド揺動機構 |
JP4812204B2 (ja) * | 2001-09-28 | 2011-11-09 | 株式会社日本触媒 | 無水マレイン酸の製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB999630A (en) * | 1960-07-29 | 1965-07-28 | Halcon International Inc | Removal of maleic anhydride from a maleic anhydride-containing gas |
DE1216867B (de) * | 1962-01-02 | 1966-05-18 | Harpener Bergbau Ag | Verfahren zur Gewinnung von Maleinsaeureanhydrid aus den durch Oxydation von Benzol entstandenen Gasen |
US3261847A (en) * | 1964-06-17 | 1966-07-19 | Chevron Res | Manufacture of maleic anhydride |
DE1295539B (de) * | 1965-02-06 | 1969-05-22 | Huels Chemische Werke Ag | Verfahren zur Abtrennung von 1, 4-Naphthochinon aus den Abgasen der katalytischen Gasphasenoxydation von Naphthalin oder von Naphthalin-o-Xylol-Gemischen |
US3965123A (en) * | 1974-06-10 | 1976-06-22 | Chevron Research Company | Maleic anhydride recovery |
-
1983
- 1983-02-17 IT IT19637/83A patent/IT1199989B/it active
- 1983-11-09 FI FI834118A patent/FI834118A/fi not_active Application Discontinuation
- 1983-11-14 EP EP83111381A patent/EP0119301A3/de not_active Withdrawn
- 1983-11-21 ES ES527432A patent/ES8504161A1/es not_active Expired
- 1983-11-21 ES ES527431A patent/ES8504756A1/es not_active Expired
- 1983-11-24 ZA ZA838768A patent/ZA838768B/xx unknown
-
1984
- 1984-02-14 BR BR8400641A patent/BR8400641A/pt unknown
- 1984-02-15 JP JP59026923A patent/JPS59157079A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0119301A3 (de) | 1984-10-31 |
FI834118A (fi) | 1984-08-18 |
ES527432A0 (es) | 1985-04-01 |
ES527431A0 (es) | 1985-05-01 |
EP0119301A2 (de) | 1984-09-26 |
ES8504161A1 (es) | 1985-04-01 |
FI834118A0 (fi) | 1983-11-09 |
JPS59157079A (ja) | 1984-09-06 |
BR8400641A (pt) | 1984-09-25 |
IT1199989B (it) | 1989-01-05 |
IT8319637A0 (it) | 1983-02-17 |
IT8319637A1 (it) | 1984-08-17 |
ZA838768B (en) | 1984-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19990201 |