JPS5452038A - Recovery hydroquinone - Google Patents
Recovery hydroquinoneInfo
- Publication number
- JPS5452038A JPS5452038A JP11564877A JP11564877A JPS5452038A JP S5452038 A JPS5452038 A JP S5452038A JP 11564877 A JP11564877 A JP 11564877A JP 11564877 A JP11564877 A JP 11564877A JP S5452038 A JPS5452038 A JP S5452038A
- Authority
- JP
- Japan
- Prior art keywords
- acrylic acid
- hydroquinone
- acrolein
- dimer
- evaporating
- 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 and reuse hydroquinone added as a polymerization inhibitor in a process for the preparation of acrylic acid by the catalytic gasphase oxidation of propylene or acrolein, in high efficiency, by evaporating the bottom of a fracftionation column to dryness, and extracting the residue with water.
CONSTITUTION: A mixture containing acrylic acid prepared by the catalytic gas- phase oxidation of propylene or acrolein, is distilled in an acrylic acid fractionation column 2, and the distilled acrylic acid is collected in a tank 4. The bottom liquid of the fractionation column 2 composed of acrylic acid containing concentrated hydroquinone which is added as a polymerization inhibiter and other high-boiling products such as polymers, is introduced into an evaporator 7. After evaporating 60- 90 wt% of the liquid supplied to the evaporator 7, the composition of the residue thus obtained is adjusted to 5-25wt% of acrylic acid, 25-40% of its dimer, 10-25 wt% of hydroquinone, and 40-50wt% of polymers and other high-boiling components (esp. the sum of the acrylic acid and its dimer is less than 50wt%), and extracted with 1-10 times of water in an extractor 15. The objective component is recovered through the line 17, and reused
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11564877A JPS6059889B2 (en) | 1977-09-28 | 1977-09-28 | Hydroquinone recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11564877A JPS6059889B2 (en) | 1977-09-28 | 1977-09-28 | Hydroquinone recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5452038A true JPS5452038A (en) | 1979-04-24 |
| JPS6059889B2 JPS6059889B2 (en) | 1985-12-27 |
Family
ID=14667829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11564877A Expired JPS6059889B2 (en) | 1977-09-28 | 1977-09-28 | Hydroquinone recovery method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059889B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5498718A (en) * | 1978-01-19 | 1979-08-03 | Nippon Shokubai Kagaku Kogyo Co Ltd | Recovery of acrylic acid |
| JPS54100315A (en) * | 1978-01-20 | 1979-08-08 | Nippon Shokubai Kagaku Kogyo Co Ltd | Recovery of acrylic acid |
| WO2002051786A3 (en) * | 2000-12-22 | 2003-01-23 | Basf Ag | Method for producing (meth)acrylic acid |
| WO2003043970A1 (en) * | 2001-11-22 | 2003-05-30 | Mitsubishi Chemical Corporation | Method of recovering polymerization inhibitor and process for producing acrylic acid |
| JP2004028092A (en) * | 2002-05-31 | 2004-01-29 | General Electric Co <Ge> | Automatic engine protection system acted when electronic component of control system is exposed to overheated state |
| JP2009143826A (en) * | 2007-12-12 | 2009-07-02 | Mitsubishi Chemicals Corp | Method for recovering polymerization inhibitor |
| JP2015071564A (en) * | 2013-10-03 | 2015-04-16 | 株式会社サン・ペトロケミカル | Method of producing 5-vinyl-2-norbornene and method of recovering polymerization inhibitor used in the method |
-
1977
- 1977-09-28 JP JP11564877A patent/JPS6059889B2/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5498718A (en) * | 1978-01-19 | 1979-08-03 | Nippon Shokubai Kagaku Kogyo Co Ltd | Recovery of acrylic acid |
| JPS6135977B2 (en) * | 1978-01-19 | 1986-08-15 | Nippon Shokubai Kagaku Kogyo Kk | |
| JPS54100315A (en) * | 1978-01-20 | 1979-08-08 | Nippon Shokubai Kagaku Kogyo Co Ltd | Recovery of acrylic acid |
| JPS6136501B2 (en) * | 1978-01-20 | 1986-08-19 | Nippon Shokubai Kagaku Kogyo Kk | |
| WO2002051786A3 (en) * | 2000-12-22 | 2003-01-23 | Basf Ag | Method for producing (meth)acrylic acid |
| WO2003043970A1 (en) * | 2001-11-22 | 2003-05-30 | Mitsubishi Chemical Corporation | Method of recovering polymerization inhibitor and process for producing acrylic acid |
| US7041849B2 (en) | 2001-11-22 | 2006-05-09 | Mitsubishi Chemical Corporation | Method of recovering polymerization inhibitor and method of producing acrylic acid |
| CN100390127C (en) * | 2001-11-22 | 2008-05-28 | 三菱化学株式会社 | Method of recovering polymerization inhibitor and process for producing acrylic acid |
| JP2004028092A (en) * | 2002-05-31 | 2004-01-29 | General Electric Co <Ge> | Automatic engine protection system acted when electronic component of control system is exposed to overheated state |
| JP2009143826A (en) * | 2007-12-12 | 2009-07-02 | Mitsubishi Chemicals Corp | Method for recovering polymerization inhibitor |
| JP2015071564A (en) * | 2013-10-03 | 2015-04-16 | 株式会社サン・ペトロケミカル | Method of producing 5-vinyl-2-norbornene and method of recovering polymerization inhibitor used in the method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6059889B2 (en) | 1985-12-27 |
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