PROCESS FOR PRODUCTION OF RAW COKE, AND PROCESS FOR PRODUCTION OF NEEDLE COKE

WIPO Patent Application WO/2010/131708

A1

Disclosed are: a reformed pitch which contains a polar molecule component of a coal-derived pitch in a reduced amount and can be produced with high efficiency; a raw coke suitable for the production of a needle coke; and the needle coke. The following first and second steps are carried out: a first step of removing a light fraction from a coal-derived low-temperature tar by distillation to produce a coal-derived pitch; and a second step of adding a reforming solution to the coal-derived pitch obtained in the first step, agitating the resulting mixture while heating the mixture at a temperature equal to or lower than the boiling point of the reforming solution, and separating the resulting mixture into a solid fraction and a liquid fraction to obtain a solid content as a reformed pitch, wherein the reforming solution is mainly composed of a polyhydric alcohol that can selectively dissolve a polar molecule component contained in the coal-derived pitch obtained in step 1 and having a hetero atom in the molecule. A raw coke can be produced from the reformed pitch obtained in step 2.

MORIYAMA RYO (JP)
SOGABE TOSHIAKI (JP)
YAMAGUCHI CHIHARU (JP)
AZUMA TAKAYUKI (JP)
KOIDE JIRO (JP)
KANO KEISUKE (JP)

PCT/JP2010/058109

November 18, 2010

May 13, 2010

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OSAKA GAS CHEMICALS CO LTD (JP)
SUMITOMO CORP (JP)
MORIYAMA RYO (JP)
SOGABE TOSHIAKI (JP)
YAMAGUCHI CHIHARU (JP)
AZUMA TAKAYUKI (JP)
KOIDE JIRO (JP)
KANO KEISUKE (JP)

C10B57/04; C10B57/08; C10C3/08

JPH02296894A	1990-12-07
JP2775784B2	1998-07-16
JPS4911603B1	1974-03-18

KITAMURA SHUICHIRO (JP)
Shuichiro Kitamura (JP)

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