国产石油馏分临界性质的测定和计算方法研究  

INVESTIGATION ON MEASUREMENT AND PREDICTIVE METHOD FOR THE CRITICAL PROPERTIES OF CHINESE PETROLEUM FRACTIONS

作　　者：王从岗[1] 寿德清[1] 向正为 万重英[1] 

机构地区：[1]石油大学炼制系

出　　处：《石油学报（石油加工）》1993年第1期73-80,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金

摘　　要：用封闭管法和以镓为传递介质的半封闭管法分别测定五种国产原油58个馏分的临界温度T_c和三种国产原油44个馏分的临界性质T_c、P_c、V_c.提出6个用易测的密度和平均沸点或密度和粘度(后者对重馏分特别有用)预测T_c、P_c和V_c的关联式,平均相对偏差分别为1.02～1.12%、3.79～4.17%、9.08～12.04%.探索用基团贡献法预测石油馏分T_c和P_c的方法,取得满意的结果.The critical temperature T_c of 58 virgin oil fractions from five Chinese crude oil are measured by sealed tube method and the critical properties T_c, P_c, V_c of 44 fractions from three Chinese crude oil are measured by semi-sealed tube method using gallium as the pressure transfer medium. Six satisfactory correlations for predicting the critical properties are proposed with the easily-measured physical property pairs of ρ,T_m or ρ, ν(the latter pair is especially useful for heavy oil fractions) as the parameters. The average relative deviation are: T_c, 1.02～1.12% ,P_c,3.79～4.17% ,V_c,9.08～12.04%.The feasibility of group contribution method for predicting critical properties for the above-mentioned oil fractions are also investigated and good results are obtained.

关 键 词：石油馏分 临界性质 计算方法 

分 类 号：TE622.5[石油与天然气工程—油气加工工程]