Hydrogenation of the Naphthalene Fractions of Coal Tar from Coal of the Shubarkol Deposit

Abstract

The results of studies on the hydrogenation of a naphthalene fraction of coal tar performed to obtain high-grade sulfur-free naphthalene and high-purity benzene for organic syntheses and to increase the yield of naphthalene due to hydrodemethylation of its homologues from the feedstock are presented. It was established that the preliminary ozonization of a mixture of crude coke-chemical benzene and the naphthalene fraction (3 : 1) for 60 min makes it possible to obtain a 95–96% yield of valuable chemical products on a converted raw material basis upon the subsequent high-temperature hydrogenation.