Process for preparing needle coal pitch coke

摘要

A process for preparing needle coal pitch coke by mixing coal tar and/or coal tar pitch with aromatic and aliphatic solvents under atmospheric pressure and at temperatures between 15 DEG C and 140 DEG C. The mixing ratio of the aromatic and aliphatic solvents and their quantities of addition to coal tar and/or coal tar pitch are adjusted so that insoluble substances precipitate in a zone selected from the group consisting of a slurry zone and a crystal zone. By distilling a supernatant solution obtained by separating the insoluble substances occurring in the slurry or crystal zone, hydrocarbons consisting substantially of aromatic compounds and free of the insoluble substances are obtained. The obtained hydrocarbons are processed into coke.