Liquefaction of Warukin Formation Coal, Barito Basin, South Kalimantan on Low Pressure and Low Temperature

Research focusing on the quality of coal in Warukin Formation has been conducted in coal outcropslocated on Tabalong area, particularly in 3 coal seams, namely Wara 120 which consists of low rank coal (lignite).Meanwhile, coals in seam Tutupan 210 and Paringin 712 are medium rank coal (sub-bituminous). Coal liquefactionis conducted in an autoclave on low pressure and temperature. Pressure during the process is 14 psi and temperatureis 120oC. Catalyst used are alumina, hydrogen donor NaOH and water solvent. Liquefaction is conducted in threetimes variables of 30 minutes, 60 minutes and 90 minutes. This process shows following yield : Wara seam 120:25.37% - 51.27%; Tutupan seam 210: 3.02%-15.45% and seam Paringin 712:1.99%-11.95%. The average result ofyield shows that coals in seam Wara has higher yield conversion than coals in seam Tutupan and Paringin.