Different Heavy Residue Preparation Mesophase Pitch

Raw material composition, temperature and carbonization time among the influence of phase formation of different and directly related to modulation of high quality, of mesophase pitch, must find a balance between the different connection spot. In this experiment process, considering aromatic content, gelatin and bituminous content, carbonization temperature and carbonization reaction time on the influence of mesophase pitch preparation.Will light aromatics and heavy aromatics adds the reaction kettle in the atmosphere, nitrogen purging, take away the reaction that produces light component. Atmospheric pressure, temperature setting 180℃/h and 400℃temperature heating rate, stirring constantly, under the precondition of carbonization reaction. Will light aromatics and aromatic reaction kettle, respectively, to join in the atmosphere, nitrogen purging, take away the reaction that produces light component. Atmospheric pressure, temperature setting 180℃/h and 400℃temperature heating rate, stirring constantly, under the precondition of carbonization reaction Light aromatics raw materials, atmospheric conditions,380℃and 400℃, 420℃, carbonized time. Light aromatics raw materials, atmospheric conditions, 400℃carbonization reaction time 4h, 6h, 10h, The above conditions in the preparation of mesophase pitch under polarizing microscope observation analysis.Remove after curing samples, first add water use water resistant coarse grinding the coarse grinding with paper, paper will sample the coarse grinding whet flat, then sanded (metallographic) fine grinding, final reoccupy polishing machine will fine grinding the samples after polishing among brightness, so until samples in sample is complete the processing, it can be performed under the polarizing microscope observation. Light aromatics with aromatic content saturated hydrocarbon content high, low, the colloid bituminous content low characteristic, is preparation mesophase pitch of high quality raw materials, appropriate temperature 400℃, the suitable carbonized time.