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
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000926 separation method Methods 0.000 title 1
- 238000000605 extraction Methods 0.000 abstract 3
- 230000002209 hydrophobic effect Effects 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 239000006227 byproduct Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 2
- 239000012044 organic layer Substances 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
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 (4)
| 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 |
| CN116120167B (en) * | 2022-12-01 | 2024-11-12 | 中建安装集团有限公司 | A method for efficiently purifying methacrylic acid |
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