典型文献
Mechanism analysis of solvent selectivity and energy-saving optimization in vapor recompression-assisted extractive distillation for separation of binary azeotrope
文献摘要：
Octane and p-xylene are common components in crude gasoline,so their separation process is very important in petroleum industry.The azeotrope and near azeotrope are often separated by extractive dis-tillation in industry,which can realize the recovery and utilization of resources.In this work,the vapor-liquid equilibrium experiment was used to obtain the vapor-liquid equilibrium properties of the difficult separation system,and on this basis,the solvent extraction mechanism was studied.The mechanism of solvent separation plays a guiding role in selecting suitable solvents for industrial separation.The inter-action energy,bond length and charge density distribution of p-xylene with solvent are calculated by quantum chemistry method.The quantum chemistry calculation results and experiment results showed that N-formylmorpholine is the best solvent among the alternative solvents in the work.This work pro-vides an effective and complete solvent screening process from phase equilibrium experiments to quan-tum chemical calculation.An extractive distillation simulation process with N-formylmorpholine as solvent is designed to separate octane and p-xylene.In addition,the feasibility and effectiveness of the intensified vapor recompression assisted extraction distillation are also discussed.In the extractive dis-tillation process,the vapor recompression-assisted extraction distillation process is globally optimal.Compared with basic process,the total annual cost can be reduced by 43.2％.This study provides theoret-ical guidance for extractive distillation separation technology and solvent selection.
文献关键词：
中图分类号：
作者姓名：
Xiaomin Qiu;Yuanyuan Shen;Zhengkun Hou;Qi Wang;Zhaoyou Zhu;Yinglong Wang;Jingwei Yang;Jun Gao
作者机构：
College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;College of Chemical and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China
文献出处：
引用格式：
[1]Xiaomin Qiu;Yuanyuan Shen;Zhengkun Hou;Qi Wang;Zhaoyou Zhu;Yinglong Wang;Jingwei Yang;Jun Gao-.Mechanism analysis of solvent selectivity and energy-saving optimization in vapor recompression-assisted extractive distillation for separation of binary azeotrope)[J].中国化学工程学报（英文版）,2022(06):271-279
A类：
azeotrope,Octane,tillation,formylmorpholine
B类：
Mechanism,analysis,selectivity,energy,saving,optimization,vapor,recompression,assisted,extractive,distillation,separation,binary,xylene,common,components,crude,gasoline,their,process,important,petroleum,industry,near,often,separated,by,which,can,realize,recovery,utilization,resources,In,this,work,liquid,equilibrium,was,used,obtain,properties,difficult,system,basis,extraction,mechanism,studied,plays,guiding,selecting,suitable,solvents,industrial,inter,bond,length,charge,density,distribution,calculated,quantum,chemistry,method,calculation,results,showed,that,best,among,alternative,This,complete,screening,from,phase,experiments,chemical,An,simulation,designed,octane,addition,feasibility,effectiveness,intensified,also,discussed,globally,optimal,Compared,basic,total,annual,cost,reduced,study,provides,theoret,guidance,technology,selection
AB值：
0.433982
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