Analysis of Chemical Composition and Property of Pyrolysate Oil of Rosin

The orthogonal test of the cracking reaction of rosin by the catalyst of activated clay were studied. Chemical compositions and physicochemical properties of the pyrolysate oil were analyzed.The results showed that activated clay can catalyzed the cracking reaction of rosin in lower temperature, with reduced the reaction time. Optimum cracking process conditions are reaction temperature 240℃, reaction time 1.5h, dosage of catalyst 10% in weight of rosin. The acid value of pyrolysate oil is 0.69-0.75 mg/g and its yield is 60%-63%. GC-MS found that main constituents of pyrolysate oil were benzene, naphthalene,ketone,ester,phenanthrene and other aromatic compounds. Acid value of pyrolysate oil is 0.075 g/L, dynamic viscosity (20℃)is 47.6 mm2/s, condensation point is -30℃, cold filter plugging point is 11℃, cetane number is 30.4。After mixing pyrolysis oil with other oils or improve performance of the pyrolysate oil, It can reach the national standards of petrochemical diesel.