Method for producing rubber filling oil from direct coal liquefaction oil

The invention relates to the field of coal chemical industry, the invention discloses a method for producing a rubber filling oil by adopting direct coal liquefaction oil. The method comprises the following steps: (1) in the presence of hydrogen, contacting a fraction with a distillation range of more than M obtained by fractionating the direct coal liquefaction oil with a catalyst, carrying out hydrofining reaction to obtain a hydrofining effluent, wherein M is an arbitrary value between 300 DEG C and 360 DEG C, and the catalyst comprises a hydrofining catalyst; (2) in the presence of hydrogen, contacting the hydrofining effluent with a hydro-upgrading catalyst, and carrying out hydro-upgrading reaction to obtain a hydro-upgrading effluent; and (3) in the presence of hydrogen, contactingthe hydro-upgrading effluent with a hydro-finishing catalyst, carrying out a further hydrofining reaction, and separating the obtained product to obtain the rubber filling oil. The rubber filling oilproduced by the method has