JPS643133A - Purification of tar acid - Google Patents

Purification of tar acid

Info

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
Application number
JP15442987A
Other languages
Japanese (ja)
Other versions
JPH013133A (en
JPH0248531B2 (en
Inventor
Ryozo Shimizu
Masafumi Sekino
Shuji Endo
Katsuyuki Hoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP15442987A priority Critical patent/JPH0248531B2/en
Publication of JPH013133A publication Critical patent/JPH013133A/en
Publication of JPS643133A publication Critical patent/JPS643133A/en
Publication of JPH0248531B2 publication Critical patent/JPH0248531B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
JP15442987A 1987-06-23 1987-06-23 TAARUSANRUINOSEISEIHOHO Expired - Lifetime JPH0248531B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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