| Abstract
| - A total process for methanol-mediated extraction was designed. The process consisted of (1)methanol-mediated extraction, (2) neutral oil removal, (3) methanol recovery, (4) water treatment,and (5) washing. The recovery ratio of each process was determined with the naphtha fractionderived from Tanito Harum coal produced in a 150 t/day NEDOL coal liquefaction pilot plantunder the conditions of a feedstock/methanol/water ratio of 1:1:1. The mass balance of the totalsystem was calculated from the recovery ratios. In the total process, slight losses were found inmethanol, water, heptane, and toluene, requiring 2−21 g of addition per 1000 g of feedstock,which were insignificant compared to the amount of feedstock. Based on the results, the entireextraction process was mostly closed. Overall, 197 g of crude phenol containing 138 g of phenolsand 877 g of product oil were recovered from 1000 g of feedstock containing 206 g of phenols.
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