JPS5690034A - Purification of acrylic acid - Google Patents
Purification of acrylic acidInfo
- Publication number
- JPS5690034A JPS5690034A JP16759879A JP16759879A JPS5690034A JP S5690034 A JPS5690034 A JP S5690034A JP 16759879 A JP16759879 A JP 16759879A JP 16759879 A JP16759879 A JP 16759879A JP S5690034 A JPS5690034 A JP S5690034A
- Authority
- JP
- Japan
- Prior art keywords
- column
- acrylic acid
- acetic acid
- line
- water
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE:To recover acrylic acid free of water and by-products, from crude acrylic acid aqueous solution obtained by the vapor phase catalytic oxidation of propylene, in high recovery, preventing polymerization of acrylic acid, by using a dehydration column and an acetic acid separation column, and distillating in the presence of a specific azeotropic agent. CONSTITUTION:An aqueous solution of crude acrylic acid obtained by the vapor phase catalytic oxidation of propylene and/or acrolein is introduced into a dehydration column E through a line 12, and distilled together with an azeotropic agent introduced to the column through the line 16. The azeotropic agent is a compound which forms azeotropic mixtures with both water and acetic acid, is hardly soluble in water, and does not form an azeotropic mixture with acrylic acid. Whole water and formic acid and a part of acetic acid in the aqueous solution is distilled out from the top of the column E, and acrylic acid containing residual acetic acid is extracted from the bottom of the column, introduced into an acetic acid separation column F through a line 14, and distilled together with the above azeotropic agent to distil off the whole acetic acid and a small amount of acrylic acid through the top of the column F. A part of the acrylic acid is recycled to the column F through the line 18, and the remainder is returned to the dehydration column E through the line 16. The purified acrylic acid is recovered from the bottom of the column F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16759879A JPS5690034A (en) | 1979-12-25 | 1979-12-25 | Purification of acrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16759879A JPS5690034A (en) | 1979-12-25 | 1979-12-25 | Purification of acrylic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5690034A true JPS5690034A (en) | 1981-07-21 |
| JPS6310691B2 JPS6310691B2 (en) | 1988-03-08 |
Family
ID=15852729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16759879A Granted JPS5690034A (en) | 1979-12-25 | 1979-12-25 | Purification of acrylic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5690034A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6038341A (en) * | 1983-08-11 | 1985-02-27 | Nippon Shokubai Kagaku Kogyo Co Ltd | Purification of acrylic acid |
| JPS6038342A (en) * | 1983-08-12 | 1985-02-27 | Nippon Shokubai Kagaku Kogyo Co Ltd | Production of acrylic acid |
| FR2554809A1 (en) * | 1983-08-11 | 1985-05-17 | Nippon Catalytic Chem Ind | PROCESS FOR THE PREPARATION OF ACRYLIC ACID |
| JP2001031624A (en) * | 1999-06-28 | 2001-02-06 | Rohm & Haas Co | Preparation of (meth)acrylic acid |
| JP2007176951A (en) * | 2007-02-26 | 2007-07-12 | Nippon Shokubai Co Ltd | Method for producing (meth)acrylic acid |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3937462B2 (en) | 1994-08-04 | 2007-06-27 | 三菱化学株式会社 | Acrylic acid purification method |
| JP2001247510A (en) | 2000-03-08 | 2001-09-11 | Nippon Shokubai Co Ltd | Method of producing acrylic acid |
-
1979
- 1979-12-25 JP JP16759879A patent/JPS5690034A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6038341A (en) * | 1983-08-11 | 1985-02-27 | Nippon Shokubai Kagaku Kogyo Co Ltd | Purification of acrylic acid |
| FR2554809A1 (en) * | 1983-08-11 | 1985-05-17 | Nippon Catalytic Chem Ind | PROCESS FOR THE PREPARATION OF ACRYLIC ACID |
| JPS6038342A (en) * | 1983-08-12 | 1985-02-27 | Nippon Shokubai Kagaku Kogyo Co Ltd | Production of acrylic acid |
| JP2001031624A (en) * | 1999-06-28 | 2001-02-06 | Rohm & Haas Co | Preparation of (meth)acrylic acid |
| JP2007176951A (en) * | 2007-02-26 | 2007-07-12 | Nippon Shokubai Co Ltd | Method for producing (meth)acrylic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6310691B2 (en) | 1988-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Effective date: 20050316 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081021 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20090121 |
|
| A602 | Written permission of extension of time |
Effective date: 20090302 Free format text: JAPANESE INTERMEDIATE CODE: A602 |
|
| A601 | Written request for extension of time |
Effective date: 20090223 Free format text: JAPANESE INTERMEDIATE CODE: A601 |
|
| A602 | Written permission of extension of time |
Effective date: 20090413 Free format text: JAPANESE INTERMEDIATE CODE: A602 |
|
| A313 | Final decision of rejection without a dissenting response from the applicant |
Effective date: 20090511 Free format text: JAPANESE INTERMEDIATE CODE: A313 |
|
| A02 | Decision of refusal |
Effective date: 20090630 Free format text: JAPANESE INTERMEDIATE CODE: A02 |