水素化溶媒を用いる石炭のソリボルシス ＩＩ 水素化アントラセン油溶媒

Abstract

Solvolysis liquefaction of subbituminous coal by short contact time at high temperature has been carried out using hydrogenated anthracene oil (H-A0) as a model solvent concerning the property and liquefaction ability of the solvent in the development of the solvolysis liquefaction phase II process.The anthracene oil (AO) hydrogenated by sulfided Ni-Mo/Al2O3 catalyst was an excellent solvent for coal liquefaction in comparison with AO done by non-sulfided catalyst and original AO, and yielded the benzene- and quinoline-soluble fractions of coal in about 70% and 90%, respectively, by solvolysis liquefaction at 450°C for 10 min. Strongly hydrogenated AO was superior to weakly hydrogenated AO for the benzene-solublization of coal, but the quinoline-solublization of coal did not depend upon the degree of hydrogenation of AO. The hydroaromatics contained in H-AO were presumed to be hydrogen-donor species to coal; for they were converted to the corresponding aromatics in the analyses of the solvolysis liquefaction products.The solvolysis liquefaction with various distillate fractions of H-AO suggested that the liquefaction abilities of hydroaromatics increased in the order of di-, tri-, and tetracyclic hydroaromatics; it showed that the higher-boiling fraction of H-AO with higher aromaticity was effective for the quinoline-solublization of coal.