A method of recovery of organic solvents required in refining of coal comprising of following steps: feeding solvent, co-solvent and coal in the feed preparation unit to form slurry. Pumping the slurry to the reactor wherein the slurry is thermally treated under pressure and high temperature. Feeding the material, to the filter in the extraction unit for separating. Passing the coal-extract to drum filter and through the membrane under high pressure in the ultra filtration unit to obtain penetrating fluid without coal to recovery most of the solvents. Afterwards to the precipitation tank residing in solvent recovery zone in contact with water, to obtain precipitated coal in slurry with mixture of water and organic solvent, feeding the slurry in a drum filter to get clean coal of very low ash content as residue and a mixture of water and organic solvent as filtrate, sending the filtrate to the solvent recovery unit for distillation for separating the residual organic solvents from water. Wherein using membrane in the method for obtaining clean coal with very low ash content and the method for separating the organic solvents from the coal after heat treatment completely and recovering can minimize heat requirement and achieve economical efficiency.