Liquefaction tests were conducted on Wandoan coal, Illinois No. 6 coal and Wyoming coal at 1t/d Process Supporting Unit (PSU). And effect of liquefaction reaction conditions on the product yield was studied. As a result, the target of liquefied oil yield of NEDOL process, over 50wt% ,was achieved at the basic liquefaction reaction conditions of NEDOL process with these three coals. And the oil yield on Illinois No.6 coal was mostly increased with increasing reaction temperature compared with other coals. And the oil yield on Wandoan coal was the highest in the three coals under the basic liquefaction reaction conditions.
