System for preparing degradable plastic from direct coal liquefaction oil product

The utility model relates to the technical field of degradable plastic preparation, in particular to a system for preparing degradable plastic from a direct coal liquefaction oil product, which comprises a fractionation unit for fractionating direct coal liquefaction liquefied gas to obtain propane and C4 fraction; the first reaction unit is communicated with the bottom end of the fractionation unit; the reforming unit is used for carrying out reforming reaction on naphtha to obtain cyclohexane, C6-C7 aromatic hydrocarbon fractions and C8 < + > fractions; the first oxidation unit is communicated with the top end of the reforming unit; the second oxidation unit is communicated with the bottom end of the reforming unit; the first polymerization unit is communicated with the first reaction unit, the first oxidation unit and/or the second oxidation unit. According to the utility model, the direct coal liquefaction naphtha and the direct coal liquefaction liquefied gas are combined to produce the degradable plasti