SOLVENT FOR COAL LIQUEFACTION, METHOD FOR PRODUCING SAME AND METHOD FOR PRODUCING LIQUEFIED COAL OIL

摘要

Disclosed are a solvent for coal liquefaction, a method for producing the same, and a method for producing a liquefied coal oil such that in addition to obtaining a liquefied coal oil under low-pressure reaction conditions, excellent liquefied coal oil can be obtained by continuous processing. The solvent for coal liquefaction is formed by hydrogenation of a starting material which contains 30 - 60% by mass phenanthrene and 0.2 - 5% by mass naphthalene, and which is derived from a coal tar fraction. The solvent for coal liquefaction is a fraction having an aromatic index of 0.6 - 0.9 and a boiling point of 260 - 540°C. The solvent for coal liquefaction is obtained by carrying out a hydrogenation process after vacuum distillation of anthracene oil. Coal is liquefied at a temperature of 320 - 450°C and a pressure of 0.3 - 1 MPa using the solvent for coal liquefaction.