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

• Main Authors: Edy Nursanto, Arifudin Idrus, Hendra Amijaya, Subagyo Pramumijoyo
• Format: Article
• Language: English
• Published: Society of Economic Geologists and Mineral Technologists 2013-06-01
• Series: International Journal of Economic and Environment Geology
• Online Access: http://www.econ-environ-geol.org/pdf/july2013/Article-1.pdf

Research focusing on the quality of coal in Warukin Formation has been conducted in coal outcrops located 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 liquefaction is conducted in an autoclave on low pressure and temperature. Pressure during the process is 14 psi and temperature is 120oC. Catalyst used are alumina, hydrogen donor NaOH and water solvent. Liquefaction is conducted in three times 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 of yield shows that coals in seam Wara has higher yield conversion than coals in seam Tutupan and Paringin.