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采用自建的流动型常、减压汽-液平衡（VLE）实验装置，进行了新疆原油小于350℃馏分油在常压和不同温度下以及大于350℃重油在不同压力和不同温度下的平衡汽化实验，实测了每25℃的假组分的密度和分子量等相应物性数据，经多元逐步回归得到ki的关联式，并用以进行泡点、露点、平衡闪蒸温度与汽化率的计算，取得了较满意结果。
A self-built flow-type constant pressure and vacuum vapor-liquid balance (VLE) experimental device was used to carry out the equilibrium of Xinjiang crude oil with the pressure less than 350 ℃ and different temperature at 350 ℃ under different pressures and different temperatures Vaporization experiment was carried out. The corresponding physical properties such as density and molecular weight of each pseudo-component at 25 ° C were measured. The correlations of ki were obtained by multivariate stepwise regression and were used to calculate the bubble point, dew point, equilibrium flash evaporation temperature and vaporization rate. A more satisfactory result.