Under direct coal liquefaction conditions, coprocessing of Tanitharm coal and plastic using 1:1 Athabasca tar sand bitumen/tetralin mixture as a solvent was carried out with a 500cc autoclave. At 430℃ with 4MPa initial pressure of a simulated coke oven gas (1:1 hydrogen/nirogen mixture), observed value of oil yield for coliquefaction of coal with mixed plastic of PP, PS and PE was higher than calculated value, due to the interaction between coal and the mixed plastic.
