中文摘要：

松节油是一种具有芳香气味的无色透明液体，由萜烯类化合物组成，其主要成分α-蒎烯、β-蒎烯和对伞花烃含量可达90％以上。我国松节油年产达6万吨以上。由于蒎烯可以提供C10分子骨架，并同时提供桥环或环内双键，作为中间体可以合成多种名贵香料。松节油最初主要用于制造松油醇、樟脑和龙脑，其经济价值不大，但将其分离成α-蒎烯和β-蒎烯单体，则可以合成品种多样的高附加值精细化学品。

英文摘要：

The vapor-liquid equilibrium（VLE）data of α-pinene＋β-pinene（428.82—438.13 K）,α-pinene＋p-cymene（429.05—447.15 K）,β-pinene＋p-cymene（439.20—448.66 K）and α-pinene＋β-pinene＋p-cymene（432.17—448.11 K）were determined at atmospheric pressure（100.7 kPa）with the modified Ellis still.The thermodynamic consistency of the experimental data was confirmed by means of the Herington method.Three activity coefficient models,Wilson,NRTL,UNIQUAC,were used to correlate and calculate the VLE data of these binary systems to obtain the binary parameters.Average relative deviations between calculated values and experimental data of vapor phase mole fraction were all less than 0.40%.The binary parameters of Wilson equation were also used to calculate the bubble point and the vapor phase composition for the ternary mixture without any additional adjustment.The predicted VLE for the ternary system was in good agreement with the experimental results.