松香裂解油的化学组成与性能分析

Analysis of Chemical Composition and Property of Pyrolysate Oil of Rosin

以活性白土为催化剂对松香进行催化裂解正交试验，并对裂解产物的化学组成及理化性能指标进行分析测试。结果表明：活性白土可以在较低的反应温度和较短的反应时间内对松香起到催化裂解作用，最佳工艺条件为：反应温度240℃，反应时间1．5h，催化剂用量为松香质量的10％。裂解油酸值稳定在0．69～0．75mg／g，得率稳定在60％～63％。气相色谱-质谱（GC—MS）分析表明，得到的非挥发性裂解油主要由苯、萘、酮、酯和菲等化合物组成，松香裂解油酸度为0．075g/L，运动黏度（20℃）为47．6mm。／s，冷凝点为-30℃，冷滤点为11℃，十六烷值为30．4。松香裂解油经过复配和性能改良，可达到石化柴油国家标准。

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 1.5 h, 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 30.4o After mixing pyrolysis oil with other oils or improve performance of the pyrolysate oil, It can reach the national standards of petrochemical diesel.