Abstract
Hyper-coal (HPC) is produced by coal extraction and solid-liquid separation treatment. Ash content of HPC is almost negligible and it has high heat value and excellent thermal plasticity. Because of the excellent characteristics, various applications of HPC are proposed. The 0.1t/d (dry and ash free feed coal basis) Bench Scale Unit (BSU) has been operated for demonstration and optimization of HPC process, and samples for application studies have been produced. The insoluble residiue-coal (RC) was separated by the double settling system and the operation conditions (coal concentration, overflow/underflow ratio of settling, etc.) were improved for high HPC yield. As a result, 96.5% of produced HPC was recovered, and then 60.5wt% of HPC yield (feed coal daf basis) was obtained.
