N,N-二甲基甲酰胺合成装置的模拟与优化  

Simulation and optimization of N,N-dimethylformamide synthesis unit

作　　者：张迪 张双庆 米嘉昊 李鹏宇 刘桂莲[2] ZHANG Di;ZHANG Shuang-qing;MI Jia-hao;LI Peng-yu;LIU Gui-lian(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Chemical Engineering and Technology,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]西安交通大学化学工程与技术学院,陕西西安710049

出　　处：《石化技术与应用》2025年第1期40-43,共4页Petrochemical Technology & Application

基　　金：内蒙古自治区高等学校科学技术研究项目(项目编号:NJZZ 23086);内蒙古自治区直属高校基本科研业务费项目(项目编号:JY 20220200)。

摘　　要：采用Aspen Plus模拟软件对N,N-二甲基甲酰胺(DMF)合成装置建立了模拟模型,利用夹点技术分析了该装置的换热网络能耗,并对DMF提纯塔(C 103)塔顶回流量进行了灵敏度分析。结果表明:改变最小传热温差不会影响DMF合成装置的换热网络最小公用工程能耗,该换热网络存在不合理匹配;考虑操作弹性和灵敏度变化,将C 103塔顶回流量由5.34 t/h降至3.77 t/h后,该DMF合成装置最小冷却、加热公用工程分别降低284.11,279.75 kW,冷却水和低压蒸汽用量分别降低23.10,0.43 t/h。A simulation model of N,N-dimethylformamide(DMF)synthesis unit was established by Aspen Plus simulation software.The energy consumption of heat exchange network of the unit was analyzed by pinch technology,and the sensitivity analysis of the top reflux flow of DMF purification tower(C 103)was carried out.The results showed that changing the minimum heat transfer temperature difference would not affect the minimum utility energy consumption of the heat exchanger network of the DMF synthesis unit,and the heat exchanger network had unreasonable matching.Considering the operation flexibility and sensitivity change,the minimum energy consumption of cooling and heating utilities of the DMF synthesis unit was reduced by 284.11 kW and 279.75 kW respectively after the top reflux flow of C 103 tower was reduced from 5.34 t/h to 3.77 t/h.The consumption of cooling water and low-pressure steam was reduced by 23.10 t/h and 0.43 t/h respectively.

关 键 词：N N-二甲基甲酰胺 夹点技术 换热网络 Aspen Plus软件 流程模拟 能耗分析 精馏塔灵敏度分析 

分 类 号：TQ018[化学工程] TK124[动力工程及工程热物理—工程热物理]