EFFECTS OF PRETREATMENT ON CARBONIZATION PROPERTIES OF RESIN FRACTIONS SEPARATED FROM A SOLVENT-REFINED COAL

Resin B and C (separated from hexane insoluble-benzene soluble fractio n of Akabira SRC) produced isotropic cokes after carbonization. The pr etreatment of heteroatom removal followed by hydrogenation (two-staged pretreatment) was more effective in attaining the anisotropic texture s of widely developed flow domain type from both resin B and C, than p retreatment with only hydrogenation. The analytical results suggested that the carbonization properties of resin B and C and, hence, the ext ent of developed anisotropic textures, may be more affected by OH grou ps than by total heteroatom content.