以PR方程为基础的氧—氮—氩系统气液平衡计算及在空分操作中应用  

PR equation based vapor-liquid phase equilibrium calculation of O_2-N_2-Ar system and its application in the operation of air separation unit

作　　者：徐福根[1] 万建余[1] 曾永林[1] 

机构地区：[1]新余钢铁有限责任公司气体厂,江西省新余市团结西路338001

出　　处：《深冷技术》2008年第1期26-32,共7页

摘　　要：综合分析了多组分相平衡理论特点,介绍利用Peng—Robinson(PR)立方型状态方程进行氧—氮—氩系统气液平衡计算的方法(泡点、露点和闪蒸计算),对该计算方法的准确性进行分析和验证,并举例分析了空分设备的运行工况。After a comprehensive analysis of the characteristics of multi-component phase equilibrium theory,the calculating method based on Peng-Robinson（PR） equation,a cubic equation of state,for vapor-liquid phase equilibrium of O2-N2-Ar system has been introduced to calculate the bubble point,dew point and flash.The accuracy of the calculation is discussed and validated.Operation status of an air separation unit is also analyzed based on the calculation results.

关 键 词：空分设备 立方型状态方程 气液平衡计算 工况分析 

分 类 号：TB657.7[一般工业技术—制冷工程]