Braun K10法计算假组分体系气-液相平衡的数学模型  

MATHEMATICAL MODEL OF VAPOR-LIQUID PHASE EQUILIBRIUM FOR PSEUDOCOMPONENT SYSTEM WITH BRAUN K10 METHOD

作　　者：曹睿[1] 王俊[1] 刘艳升[1] 蒋荣兴[2] 

机构地区：[1]中国石油大学(北京)化学科学与工程学院,北京102249 [2]中国石化建设工程公司

出　　处：《石油炼制与化工》2009年第8期36-40,共5页Petroleum Processing and Petrochemicals

摘　　要：对计算油品假组分体系气液相平衡的Braun K10法进行分析和讨论,通过对BraunK10法的图表数据进行拟合,开发一套可替代图表计算的数学模型,低压范围模型的最大相对误差为7.39%,高压范围模型的最大相对误差为8.54%。选取两个体系的文献数据对该模型进行验证,结果表明,两个体系的模型计算值与实测值的相对误差分别为3.09%和3.18%,说明该模型具有较高的准确性。The calculation of the vapor-liquid phase equilibrium for pseudocomponent system was analyzed and discussed by using Braun K10 method in this paper. Based on the diagrammatical data, a mathematical model of Braun K10 method was proposed and applied to numerical simulation. The maximum relative errors of the model in low pressure range and high pressure range are 7. 39% and 8.54% ,respectively. Using cited data of two systems （low and high pressure range）to validate the accuracy of the model, it can be seen that the relative errors between proposed values and actual data of these two systems are 3.09% and 3. 18% respectively, which indicates that the model can be used in engineering design with high accuracy.

关 键 词：Braun K10 法 数学模型 相平衡 假组分 

分 类 号：TE622.5[石油与天然气工程—油气加工工程]