Aspen Plus模拟计算传统水溶液全循环法低压分解塔物性方法的选择  

Physical Method Selection of Low Pressure Separating Column Simulation and Calculation by Aspen Plus in Aqueous Solution Total Recycle Process

作　　者：黄波 HUANG Bo(Chengdu Raise Environmental Technology Co.Ltd.,Chengdu 610065,China)

机构地区：[1]成都锐思环保技术股份有限公司,四川成都610091

出　　处：《化工技术与开发》2019年第4期44-47,共4页Technology & Development of Chemical Industry

摘　　要：利用Aapen Plus软件,分别选用ELECNRTL、SR-POLAR和UNIQUAC这3种物性方法,用于水溶液全循环法低压分解塔的模拟计算。最终的模拟计算结果表明,ELECNRTL得到的模拟结果中,液相浓度与文献数据较一致,而气相误差较大。SR-POLAR得到的模拟结果中,气、液相的浓度误差均较大。采用UNIQUAC,并利用已有的文献数据计算其交互作用参数,气、液相浓度与文献数据的误差均较小。故UNIQUAC物性方法适用于水溶液全循环法低压分解塔的模拟计算,并可推广到其他低压下的NH_3-CO_2-H_2O-Urea四元体系相平衡研究和计算。Three physical methods were chosen to simulate and calculate low pressure separating column in aqueous solution total recycle process by Aspen Plus.The simulation results indicated that,by ELECNRTL physical method,the liquid phase concentration was in accordance with the literature,but the vapor phase concentration had a bigger error.If SR-POLAR physical method was used,both of liquid phase concentration and vapor phase concentration had a large error with the literature.By UNIQUAC physical method,after interaction parameter calculation using existing literature data,both of liquid phase concentration and vapor phase concentration had little error with the literature.As a result,UNIQUAC physical method was suitable for simulation and calculation of low pressure separating column in aqueous solution total recycle process,and it was also applied to phase equilibrium study and calculation in NH3-CO2-H2O-Urea quaternary system.

关 键 词：ASPEN Plus 低压分解塔 模拟计算 物性方法 

分 类 号：TQ441.41[化学工程—化学肥料工业]