H_2O-NH_3-CO_2体系汽液平衡计算  

Calculation of H_2O-NH_3-CO_2 Vapor-Liquid Equilibria

作　　者：魏顺安[1] 薛荣书[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《化学工业与工程》2004年第3期193-197,共5页Chemical Industry and Engineering

摘　　要：本文给出计算H2O-NH3-CO2三元体系在温度323 15K～473 15K、压力0 2MPa～8 0MPa、液相NH3摩尔分率≤0 3、富氨区条件下汽液平衡的UNIQUAC模型及其参数,模型的计算结果与试验数据吻合。该模型可用于尿素生产装置中蒸发冷凝、循环吸收以及水解精馏等过程的设备计算。A set of interactive energy parameters of UNIQUAC equation were obtained to calculate the H_2O-NH_3-CO_2 vapor-liquid equilibria for the conditions of temperatures from 323.15K to 473.15K,pressures from 0.2MPa to 8.0MPa,and the maximum NH_3 concentrations up to 0.3 mole fraction.The calculated results of the model were consistent very well with that of the experiments.This method can be used in simulation system of the urea process.

关 键 词：水-氨-二氧化碳 汽液平衡 热力学模型 

分 类 号：O642.42[理学—物理化学]