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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 THEM

Info

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
Application number
FR7827689A
Other languages
French (fr)
Other versions
FR2404619B1 (en
Inventor
Tetsuya Ohrui
Michio Kato
Masami Ayano
Masaaki Iwasa
Tsunejiro Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of FR2404619A1 publication Critical patent/FR2404619A1/en
Application granted granted Critical
Publication of FR2404619B1 publication Critical patent/FR2404619B1/fr
Granted legal-status Critical Current

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.

FR7827689A 1977-09-28 1978-09-27 PROCESS FOR SEPARATION OF METHACROLEIN AND / OR METHACRYLIC ACID FROM AQUEOUS SOLUTIONS CONTAINING THEM Granted FR2404619A1 (en)

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)

* Cited by examiner, † Cited by third party
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 (15)

* Cited by examiner, † Cited by third party
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
GB202312698D0 (en) * 2023-08-18 2023-10-04 Mitsubishi Chemical Uk Ltd Apparatus and condensation method

Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
JPS5452027A (en) 1979-04-24
GB2004886B (en) 1982-03-10
GB2004886A (en) 1979-04-11
DE2842092A1 (en) 1979-04-05
NL7809746A (en) 1979-03-30
DE2842092C2 (en) 1990-06-13
JPS6059891B2 (en) 1985-12-27
FR2404619B1 (en) 1983-09-02

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