隔壁萃取精馏塔分离戊烷混合物的模拟研究  

Simulation study on separation of pentane mixture by extractive distillation dividing wall column

作　　者：彭珂 胡本源 王克峰[1] PENG Ke;HU Ben-yuan;WANG Ke-feng(Institute of Chemical Systems Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工系统工程研究所,辽宁大连116024

出　　处：《现代化工》2020年第10期221-225,共5页Modern Chemical Industry

摘　　要：基于环戊烷制取项目,提出了隔壁萃取精馏的新工艺。利用Aspen Plus软件的Multifrac模块,以DMF为萃取剂,对隔壁萃取精馏过程进行了研究。通过灵敏度分析对影响分离的操作参数进行了优化,根据优化后的结果可以得到质量分数为99.61%的环戊烷,质量分数为90.15%的2,2-二甲基丁烷,主要原因是隔壁萃取精馏塔能够有效地避免组分返混,提高精馏效率。和常规工艺相比,隔壁萃取精馏节能18.1%,并减少了相关塔件设备的投资。Based on the cyclopentane production project,a new technology is proposed for preparation of cyclopentane by using extractive distillation dividing wall column.The dividing wall extractive distillation process with DMF as extractant is simulated by means of the MultiFrac module of Aspen Plus software.The sensitivity analysis tool is used to optimize the parameters that affecting the separation effect.According to optimization result,the cyclopentane with a mass fraction of 99.61%and 2,2-dimethylbutane with a mass fraction of 90.15%can be obtained respectively.It is found that the extractive distillation dividing wall column can effectively avoid the backmixing of components and improve the distillation efficiency.Compared with the conventional process,the extractive distillation dividing wall column process can save energy by 18.1%and reduce the investment of related equipment.

关 键 词：环戊烷 萃取精馏 隔壁塔 模拟 节能 

分 类 号：TQ028[化学工程]