乙醇-水体系分离提纯过程新技术的研究  

Research on the new technology of ethanol-water distillation

作　　者：李群生[1] 王亚茹[1] 文放[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《化工进展》2015年第12期4179-4184,共6页Chemical Industry and Engineering Progress

摘　　要：首先拟合了Aspen Plus中乙醇-水的二元交互参数,使其计算结果更符合实际。其次通过分析乙醇-水精馏二塔（C31103）与新型吸附系统工艺流程,计算了C31103与吸附系统的主要能耗,得到了二者关于C31103塔顶采出中乙醇质量分数xD的关系式。并计算得到淡酒量和塔顶采出量关于xD的关系式。运用Aspen Plus软件对C31103进行稳态优化,计算出xD在0.945~0.88之间时的能耗与xD的关系,确定最适宜xD为0.9~0.92,并通过模拟得到各xD下的淡酒量和塔顶采出量等结果,比较淡酒量的计算结果和模拟结果,得到相对误差小于4%,证实了能耗模型的准确性。In this paper,binary interaction parameters were firstly fitted by using Aspen Plus to make its calculation results practical. Secondly based on the analysis of ethanol-water distillation column（C31103） and adsorption system,the energy consumption for both parts was calculated and the relationship between energy consumption and mass fraction of ethanol of C31103 distillation（xD） was established as well. The amount of dilute alcohol was calculated in association with xD. A series of energy consumption were calculated when xD was between 0.945—0.88 with the increment 0.005. It was concluded that the appropriate xD was within 0.9 and 0.92. The amount of distillate alcohol and the distillation of C31103 under different xD was calculated by simulation. After analyzing and comparing the results by calculation and simulation,it was obtained that the relative errors were less than 4%,which confirmed the accuracy of the model of energy consumption.

关 键 词：乙醇-水 精馏 吸附 节能优化 

分 类 号：TQ214[化学工程—有机化工]