FR2404619A1 - PROCESS FOR SEPARATION OF METHACROLEIN AND / OR METHACRYLIC ACID FROM AQUEOUS SOLUTIONS CONTAINING THEM - Google Patents
PROCESS FOR SEPARATION OF METHACROLEIN AND / OR METHACRYLIC ACID FROM AQUEOUS SOLUTIONS CONTAINING THEMInfo
- Publication number
- FR2404619A1 FR2404619A1 FR7827689A FR7827689A FR2404619A1 FR 2404619 A1 FR2404619 A1 FR 2404619A1 FR 7827689 A FR7827689 A FR 7827689A FR 7827689 A FR7827689 A FR 7827689A FR 2404619 A1 FR2404619 A1 FR 2404619A1
- Authority
- FR
- France
- Prior art keywords
- methacrolein
- methacrylic acid
- tower
- separation
- gas
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
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)
Abstract
Procédé de séparation de méthacroléine et/ou d'acide méthacrylique à partir de solutions aqueuses les contenant et nouveaux produits ainsi obtenus. Dans ce procédé, on introduit le mélange réactionnel gazeux provenant d'un réacteur, où la réaction en phase gazeuse de la méthacroléine et de l'oxygène a été effectuée, dans un condenseur où le mélange réactionnel est mis en contact direct avec une partie de la liqueur condensée préalablement obtenue à une température non supérieure à 100 degrés C, on introduit le gaz résultant dans le fond d'une tour d'absorption de méthacroléine, à une température non supérieure à 30 degrés C où méthacroléine dans le gaz est absorbée dans une solution aqueuse ne contenant pas moins de 5% en poids d'acide méthacrylique, et on envoie la solution aqueuse d'acide méthacrylique contenant la méthacroléine, obtenue à partir du fond de la tour, au sommet d'une tour d'enlèvement de méthacroléine, tout en introduisant la liqueur condensée dans la partie médiane ou le sommet de la tour d'enlèvement, où un gaz inerte, tel que de l'azote ou de l'air, est fourni au fond de la tour. La présente invention est particulièrement utile pour fournir un procédé de séparation et de récupération d'acide méthacrylique et de méthacroléine, avec une grande efficacité, lors de la production d'acide méthacrylique en soumettant la méthacroléine, dans des conditions réactionnelles appropriées, à une oxydation en phase gazeuse avec de l'oxygène moléculaire.Process for the separation of methacrolein and / or methacrylic acid from aqueous solutions containing them and new products thus obtained. In this process, the gaseous reaction mixture is introduced from a reactor, where the gas phase reaction of methacrolein and oxygen has been carried out, into a condenser where the reaction mixture is brought into direct contact with part of the condensed liquor obtained previously at a temperature not higher than 100 degrees C, the resulting gas is introduced into the bottom of a methacrolein absorption tower, at a temperature not higher than 30 degrees C where methacrolein in the gas is absorbed in an aqueous solution containing not less than 5% by weight of methacrylic acid, and the aqueous solution of methacrylic acid containing methacrolein, obtained from the bottom of the tower, is sent to the top of a stripping tower. methacrolein, while introducing the condensed liquor into the middle part or the top of the stripping tower, where an inert gas, such as nitrogen or air, is supplied to the bottom of the tower. The present invention is particularly useful for providing a process for the separation and recovery of methacrylic acid and methacrolein, with high efficiency, when producing methacrylic acid by subjecting methacrolein, under suitable reaction conditions, to oxidation. in gas phase with molecular oxygen.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11704077A JPS6059891B2 (en) | 1977-09-28 | 1977-09-28 | Method for separating methacrolein and methacrylic acid |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2404619A1 true FR2404619A1 (en) | 1979-04-27 |
FR2404619B1 FR2404619B1 (en) | 1983-09-02 |
Family
ID=14701940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7827689A Granted FR2404619A1 (en) | 1977-09-28 | 1978-09-27 | PROCESS FOR SEPARATION OF METHACROLEIN AND / OR METHACRYLIC ACID FROM AQUEOUS SOLUTIONS CONTAINING THEM |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS6059891B2 (en) |
DE (1) | DE2842092A1 (en) |
FR (1) | FR2404619A1 (en) |
GB (1) | GB2004886B (en) |
NL (1) | NL7809746A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2447365A1 (en) * | 1979-01-26 | 1980-08-22 | Halcon Res & Dev | PROCESS FOR THE EXTRACTION, BY WASHING AND STRIPPING, OF METHACROLEIN FROM GASES OBTAINED BY CATALYTIC OXIDATION OF ISOBUTYLENE OR TERTIO-BUTYL ALCOHOL |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58126831A (en) * | 1982-01-22 | 1983-07-28 | Nippon Shokubai Kagaku Kogyo Co Ltd | Collection of methacrylic acid |
US4554054A (en) * | 1983-12-09 | 1985-11-19 | Rohm And Haas Company | Methacrylic acid separation |
JP2504777B2 (en) * | 1987-06-27 | 1996-06-05 | 三井東圧化学株式会社 | Method of quenching reaction gas |
CA1316545C (en) * | 1987-06-27 | 1993-04-20 | Morimasa Kuragano | Quenching process of reaction product gas containing methacrylic acid and treatment method of quenched liquid |
CA1307004C (en) * | 1988-06-03 | 1992-09-01 | Syoichi Matsumoto | Process for recovering methacrolein |
DE4026732A1 (en) * | 1990-08-24 | 1992-02-27 | Huels Chemische Werke Ag | METHOD FOR CLEANING AN OXIDATION EXHAUST GAS WITH ENERGY RECOVERY |
JP3289303B2 (en) * | 1992-03-06 | 2002-06-04 | 住友化学工業株式会社 | Acrolein manufacturing method |
DE4225321A1 (en) * | 1992-07-31 | 1994-02-03 | Basf Ag | Process for the separation of methacrolein from a gaseous mixture |
JP3279491B2 (en) * | 1996-12-16 | 2002-04-30 | 株式会社日本触媒 | Method for producing (meth) acrylic acid |
JP4056429B2 (en) * | 2003-06-05 | 2008-03-05 | 株式会社日本触媒 | Method for producing (meth) acrylic acid |
US7799946B2 (en) * | 2007-02-14 | 2010-09-21 | Saudi Basic Industries Corporation | Process for separating methacrolein from methacrylic acid in a gas phase product from the partial oxidation of isobutene |
EP3945086B1 (en) | 2020-07-30 | 2022-10-26 | Röhm GmbH | C-4 based method for preparing mma with recovery and recycling of methacrolein |
EP3945088A1 (en) | 2020-07-30 | 2022-02-02 | Röhm GmbH | Process for minimising the loss of activity in reaction steps carried out in circulation |
CN113413626A (en) * | 2021-08-24 | 2021-09-21 | 山东蓝湾新材料有限公司 | Quenching absorption tower for preparing acrylic acid by tower top gas recirculation |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1393175A (en) * | 1963-05-18 | 1965-03-19 | Distillers Co Yeast Ltd | Process for the production of unsaturated aliphatic acids |
FR1535061A (en) * | 1966-08-09 | 1968-08-02 | Knapsack Ag | Process for separating acrylic acid from reaction gases obtained by oxidation of propylene or acrolein |
US3433840A (en) * | 1966-12-29 | 1969-03-18 | Sumitomo Chemical Co | Process for recovering acrolein by quenching,absorption and plural distillation |
FR2289482A1 (en) * | 1974-10-23 | 1976-05-28 | Asahi Glass Co Ltd | PROCESS FOR PREPARING METHACRYLIC ACID FROM ISOBUTYLENE AND BY A TWO-STAGE OXIDATION |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB953763A (en) * | 1962-02-06 | 1964-04-02 | Distillers Co Yeast Ltd | Improvements in and relating to the production of unsaturated aliphatic acids |
US3513632A (en) * | 1968-12-18 | 1970-05-26 | Union Carbide Corp | Separation of acrylic acid and acrolein |
-
1977
- 1977-09-28 JP JP11704077A patent/JPS6059891B2/en not_active Expired
-
1978
- 1978-09-26 NL NL7809746A patent/NL7809746A/en not_active Application Discontinuation
- 1978-09-27 FR FR7827689A patent/FR2404619A1/en active Granted
- 1978-09-27 DE DE19782842092 patent/DE2842092A1/en active Granted
- 1978-09-28 GB GB7838561A patent/GB2004886B/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1393175A (en) * | 1963-05-18 | 1965-03-19 | Distillers Co Yeast Ltd | Process for the production of unsaturated aliphatic acids |
FR1535061A (en) * | 1966-08-09 | 1968-08-02 | Knapsack Ag | Process for separating acrylic acid from reaction gases obtained by oxidation of propylene or acrolein |
US3433840A (en) * | 1966-12-29 | 1969-03-18 | Sumitomo Chemical Co | Process for recovering acrolein by quenching,absorption and plural distillation |
FR2289482A1 (en) * | 1974-10-23 | 1976-05-28 | Asahi Glass Co Ltd | PROCESS FOR PREPARING METHACRYLIC ACID FROM ISOBUTYLENE AND BY A TWO-STAGE OXIDATION |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2447365A1 (en) * | 1979-01-26 | 1980-08-22 | Halcon Res & Dev | PROCESS FOR THE EXTRACTION, BY WASHING AND STRIPPING, OF METHACROLEIN FROM GASES OBTAINED BY CATALYTIC OXIDATION OF ISOBUTYLENE OR TERTIO-BUTYL ALCOHOL |
Also Published As
Publication number | Publication date |
---|---|
JPS6059891B2 (en) | 1985-12-27 |
DE2842092A1 (en) | 1979-04-05 |
NL7809746A (en) | 1979-03-30 |
DE2842092C2 (en) | 1990-06-13 |
FR2404619B1 (en) | 1983-09-02 |
GB2004886A (en) | 1979-04-11 |
JPS5452027A (en) | 1979-04-24 |
GB2004886B (en) | 1982-03-10 |
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