THERMAL SIMULATION EXPERIMENT RESEARCH OF SINGLE MACERAL IN COALS WITH A WATERED PRESSURE VESSEL-AN EXAMPLE OF BROWN COAL IN THE YIMIN FORMATION OF THE HAILAR BASIN

In this paper, the thermal simulation experiment with watered pressure vessel was used to study the organic macerals in coals of the Yimin Formation (J₃) of the Hailar Basin. The experiment results showed that desmocollinite was the most important hydrocarbon-generating source material with the main hydrocarbon-generating stage of 270-330℃ as well as the maximum liquid hydrocarbon yield of 19mg/g and gaseous hydrocarbon yield of 256mL/g, the main hydrocorbon-generating stage of sporinite was 300-380℃ with its maximum liquid hydrocarbon yield of 40mg/g and gaseous hydrocarbon yield of 265mL/g, and fusinite yielded hardly liquid hydrocarbon with its maximum liquid hydrocarbon yield below 2mg/g even at 300℃ and its gaseous hydrocarbon yield of 120-160mL/g. Compared with the water-free thermal simu-lation method, the peak hydrocarbon generation temperature of this method dropped obviously, commonly about 50-100℃.