JPS643133A - Purification of tar acid - Google Patents
Purification of tar acidInfo
- Publication number
- JPS643133A JPS643133A JP15442987A JP15442987A JPS643133A JP S643133 A JPS643133 A JP S643133A JP 15442987 A JP15442987 A JP 15442987A JP 15442987 A JP15442987 A JP 15442987A JP S643133 A JPS643133 A JP S643133A
- Authority
- JP
- Japan
- Prior art keywords
- impurity
- tar acids
- mentioned
- active clay
- tar
- 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
Abstract
PURPOSE: To efficiently remove an impurity in tar acids, by maintaining tar acids in vapor phase state and carrying out absorption of the above-mentioned impurity by an active clay in vapor phase when the impurity in tar acids is removed by using an active clay.
CONSTITUTION: When an impurity including a basic nitrogen compound such as aniline contained in tar acids such as phenol, cresol, xylenol, etc., obtained by distilling coal tar recovered in carbonization of coal is removed using an active clay strengthened in activity by subjecting bentonite mainly containing montmorillonite to oxygen treatment, the above-mentioned tar acids maintained to vapor phase is passed into a packed layer of the active clay and the above- mentioned impurity is absorbed and removed in simple treatment and short time. According to the method, a nitrogen compound exhibiting no basic properties such as benzonitrile can be removed and residual amount of impurity in the above-mentioned tar acids useful as a raw material for synthetic resin or plasticizer can be reduced to extremely low concentration.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15442987A JPH0248531B2 (en) | 1987-06-23 | 1987-06-23 | TAARUSANRUINOSEISEIHOHO |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15442987A JPH0248531B2 (en) | 1987-06-23 | 1987-06-23 | TAARUSANRUINOSEISEIHOHO |
Publications (3)
Publication Number | Publication Date |
---|---|
JPH013133A JPH013133A (en) | 1989-01-06 |
JPS643133A true JPS643133A (en) | 1989-01-06 |
JPH0248531B2 JPH0248531B2 (en) | 1990-10-25 |
Family
ID=15583985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15442987A Expired - Lifetime JPH0248531B2 (en) | 1987-06-23 | 1987-06-23 | TAARUSANRUINOSEISEIHOHO |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0248531B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108440302A (en) * | 2018-03-21 | 2018-08-24 | 司华山 | A kind of 4,6- dinitro-o-cresols preparation process |
-
1987
- 1987-06-23 JP JP15442987A patent/JPH0248531B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108440302A (en) * | 2018-03-21 | 2018-08-24 | 司华山 | A kind of 4,6- dinitro-o-cresols preparation process |
Also Published As
Publication number | Publication date |
---|---|
JPH0248531B2 (en) | 1990-10-25 |
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