New process for purifying and refining coarse fluorene

The invention relates to a new process for purifying and refining coarse fluorene. The new process comprises the following steps: first, adding fluorene with the mass content of 60 to 70 percent and an organic solvent in a mass ratio of 1:1 into a reaction kettle, stirring for 40 to 60 minutes at normal temperature at the stirring speed of 30 to 90r/min, and performing suction filtration and drying to obtain industrial fluorene with the mass content being over 80 percent; then, adding the industrial fluorene into the reaction kettle according to the proportion that the ratio of organic solvent to water to the industrial fluorene is 0.5:0.5:1, then adding the organic solvent and the water, turning on a program heating and cooling control device for heating the mixture, starting a stirring machine for stirring 40 to 60 minutes at the stirring speed of 30 to 90 r/min, heating to 90+/-2 DEG C until the industrial fluorene is dissolved completely; turning off the stirring machine, adjusting the temperature of the