隔壁塔(DWC)在NMP精制过程中的应用  

Application of dividing wall column(DWC)tower in NMP refining process

作　　者：郭晓俊 马立津 王荷芳[1] 宋彦磊 肖长松 GUO Xiaojun;MA Lijin;WANG Hefang;SONG Yanlei;XIAO Changsong(College of Chemical Engineering,Hebei University of Technology,Tianjin 300130,China;Binzhou Yuneng Chemical Co.,LTD.,Binzhou,Shandong 251700,China)

机构地区：[1]河北工业大学化工学院,天津300130 [2]山东滨州裕能化工有限公司,山东滨州251700

出　　处：《河北工业大学学报》2023年第2期35-42,共8页Journal of Hebei University of Technology

基　　金：国家自然科学基金(21776058);河北省自然科学基金(B2017202226)。

摘　　要：传统的N-甲基吡咯烷酮(NMP)精制要需常压塔、负压脱水塔和精馏塔三塔串联操作,过程复杂且能耗较高。本文首先对某企业的NMP精制过程进行了数据采集、模拟计算及优化,并以优化的传统工艺年总成本(TAC)为基准,与侧线采出和隔壁塔工艺(DWC)进行对比。结果显示:当前运行工艺优化后可节能30%以上。DWC比优化传统工艺操作操作费用高4.56%,但投资费用低约15.15%,TAC比传统工艺降低近2.4%,具有显著的优越性。Traditional N-methyl pyrrolidone(NMP)refining requires three column series operation of atmospheric pres⁃sure column,negative pressure dehydrating column and distillation column.The process is complex and energy consump⁃tion is high.Data acquisition,simulation calculation and optimization of the NMP refining process of an enterprise were firstly carried out in this paper,and based on total annual cost(TAC)of the optimized traditional process,were compared with that of separation by means of lateral extractions and DWC process.The results showed that optimization of the cur⁃rent operation process can save energy more than 30%.Although the operation cost of DWC was 4.56%higher than that of the optimized current operation process,the investment cost and TAC of DWC was 15.15%and 2.4%lower than that of the optimized.So DWC has significant advantages.

关 键 词：N-甲基吡咯烷酮(NMP) 负压脱水塔 隔壁塔(DWC) 精制 年总成本(TAC) 

分 类 号：TQ051.81[化学工程] TQ251.3