JPS5679634A - Separation of methacrylic acid - Google Patents
Separation of methacrylic acidInfo
- Publication number
- JPS5679634A JPS5679634A JP15683079A JP15683079A JPS5679634A JP S5679634 A JPS5679634 A JP S5679634A JP 15683079 A JP15683079 A JP 15683079A JP 15683079 A JP15683079 A JP 15683079A JP S5679634 A JPS5679634 A JP S5679634A
- Authority
- JP
- Japan
- Prior art keywords
- line
- methacrylic acid
- separator
- scum
- mixing vessel
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To separate high purity methacrylic acid, in high efficiency, from an aqueous solution of methacrylic acid containing the by-products of gase-phase catalytic oxidation, by providing a process for the pretreatment with a hydrophobic organic solvent, thereby conveniently removing the scum which is to be generated in the subsequent extraction process.
CONSTITUTION: An aqueous solution of the reaction product containing methacrylic acid and obtained by the gase-phase catalystic oxidation, is introduced through the line 1 to the mixing vessel 2, and a hydrophobic organic solvent is introduced from the separator 4 to the mixing vessel 2 through the line 5. Both materials are mixed in the vessel to produce scum of the side products, e.g. polymers. The mixed solu- tion is transferred to the separator 4 through the line 3 and separated into an organic layer comprising mainly the hydrophobic roganic solvent and an aqueous layer. A part of the organic layer is circulated to the mixing vessel through the line 5. A filter 6 is inserted in the line 5 to remove the scum. The aqueous layer at the bottom of the separator is introduced to the extraction tower through the line 7 to separate the high purity methacrylic acid.
EFFECT: Continuous extraction is possible for a long time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15683079A JPS5679634A (en) | 1979-12-05 | 1979-12-05 | Separation of methacrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15683079A JPS5679634A (en) | 1979-12-05 | 1979-12-05 | Separation of methacrylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5679634A true JPS5679634A (en) | 1981-06-30 |
Family
ID=15636274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15683079A Pending JPS5679634A (en) | 1979-12-05 | 1979-12-05 | Separation of methacrylic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5679634A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441207A1 (en) * | 1983-11-11 | 1985-05-30 | Nippon Kayaku K.K., Tokio/Tokyo | Process for the recovery of methacrylic acid |
| US9718756B2 (en) | 2013-07-23 | 2017-08-01 | Lg Chem, Ltd. | Method for continuously recovering (meth)acrylic acid and apparatus for the method |
| CN116120167A (en) * | 2022-12-01 | 2023-05-16 | 中建安装集团有限公司 | Method for efficiently purifying methacrylic acid |
-
1979
- 1979-12-05 JP JP15683079A patent/JPS5679634A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441207A1 (en) * | 1983-11-11 | 1985-05-30 | Nippon Kayaku K.K., Tokio/Tokyo | Process for the recovery of methacrylic acid |
| US9718756B2 (en) | 2013-07-23 | 2017-08-01 | Lg Chem, Ltd. | Method for continuously recovering (meth)acrylic acid and apparatus for the method |
| CN116120167A (en) * | 2022-12-01 | 2023-05-16 | 中建安装集团有限公司 | Method for efficiently purifying methacrylic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5452027A (en) | Separation of methacrolein and methacrylic acid | |
| JPS54138097A (en) | Method of washing a polycarbonate solution in an organic solvent | |
| JPS5692228A (en) | Preparation of high-purity alkylene glycol | |
| JPS52103390A (en) | Removal of acidic substances from reaction product | |
| JPS5432431A (en) | Replacement and separation of mother liquor in terephthalic acid suspension | |
| JPS5679634A (en) | Separation of methacrylic acid | |
| FR2505202B3 (en) | ||
| JPS54119412A (en) | Purification of methacrylic acid | |
| JPS54141721A (en) | Preparation of methacrylic acid | |
| JPS54115318A (en) | Recovery of methacrylic acid | |
| JPS5513255A (en) | Preparation of terephthalic acid | |
| JPS53144524A (en) | Production of methacrylic ester | |
| GB1013618A (en) | Improved process for recovery of adipic acid precursors | |
| JPS5312155A (en) | Process for removing color of separatad loquid from heat treatment apparatus | |
| JPS5498734A (en) | Method of separation of naphthoquinone and phthalic acid | |
| JPS5446730A (en) | Separation of m-cresol | |
| JPS5663827A (en) | Rhodium separating and recovering method | |
| JPS5566539A (en) | Preparation of m-phenoxybenzoic acid | |
| JPS527917A (en) | Process for purification of methacrylic acid | |
| JPS5257135A (en) | Esterification process | |
| JPS57136547A (en) | Preparation of terephthalic acid for direct polymerization | |
| JPS5390650A (en) | Waste water treatment | |
| JPS5365814A (en) | Purification of acetic acid | |
| JPS5251316A (en) | Process for preparation of methacrylic acid | |
| JPS55123686A (en) | Continuous circulating hydrotreating of heavy oil |