JPS56158725A - Purifying method of ketone - Google Patents
Purifying method of ketoneInfo
- Publication number
- JPS56158725A JPS56158725A JP6170880A JP6170880A JPS56158725A JP S56158725 A JPS56158725 A JP S56158725A JP 6170880 A JP6170880 A JP 6170880A JP 6170880 A JP6170880 A JP 6170880A JP S56158725 A JPS56158725 A JP S56158725A
- Authority
- JP
- Japan
- Prior art keywords
- ketone
- aqueous solution
- crude
- crude ketone
- alkali metallic
- 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 obtain a ketone of high purity, by heat-treating a mixture of a crude ketone with a waste aqueous solution of an alkali metallic hydroxide in the homogeneous phase, feeding a fresh aqueous solution of an alkali metallic hydroxide to a multistage rectifying column continuously, and bringing the crude ketone into the countercurrent contact with the fresh aqueous solution.
CONSTITUTION: A waste aqueous solution, containing an alkali metallic hydroxide, preferably NaOH, and expelled from the bottom of a multistage rectifying column in a concentration of 0.02W0.1wt% in an amount enough to form the homogeneous phase, i.e. 1/12W1/3, based on a crude ketone, is mixed with the crude ketone containing a very small amount of an aldehyde, preferably crude acetone obtained by the cumene method, and heat-treated at 10W60°C to convert the aldehyde into compounds having a high boiling point. The resultant mixture is then fed into the multistage rectifying column and rectified by feeding a fresh aqueous solution of the alkali metallic hydroxide in a concentration of 0.1W5wt% continuously above the feed point of the crude ketone in an amount of 1/100W1/7 that of the crude ketone. The method inhibits the dissociation of the high-boiling compounds and provides the purified ketone with a low content of the aldehyde.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6170880A JPS56158725A (en) | 1980-05-12 | 1980-05-12 | Purifying method of ketone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6170880A JPS56158725A (en) | 1980-05-12 | 1980-05-12 | Purifying method of ketone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56158725A true JPS56158725A (en) | 1981-12-07 |
Family
ID=13178995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6170880A Pending JPS56158725A (en) | 1980-05-12 | 1980-05-12 | Purifying method of ketone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56158725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105642A (en) * | 1983-11-15 | 1985-06-11 | Daicel Chem Ind Ltd | Purification of acetone |
| US4885399A (en) * | 1986-11-26 | 1989-12-05 | Catalytica, Inc. | Process for obtaining substantially aldehyde-free ketone products |
| JP2001058143A (en) * | 1999-06-02 | 2001-03-06 | Retech Services Inc A Lockeed Martin Co | Material and geometory design for improving operation of pouring nozzle of plasma-arc centrifugal treating system |
-
1980
- 1980-05-12 JP JP6170880A patent/JPS56158725A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105642A (en) * | 1983-11-15 | 1985-06-11 | Daicel Chem Ind Ltd | Purification of acetone |
| US4885399A (en) * | 1986-11-26 | 1989-12-05 | Catalytica, Inc. | Process for obtaining substantially aldehyde-free ketone products |
| JP2001058143A (en) * | 1999-06-02 | 2001-03-06 | Retech Services Inc A Lockeed Martin Co | Material and geometory design for improving operation of pouring nozzle of plasma-arc centrifugal treating system |
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