二甲基乙酰胺-水体系双效精馏过程节能减排研究  

Research on Energy Conservation and Emission Reduction in Double-Effect Distillation of Dimethylacetamide-Water System

作　　者：鲁志豪 敖邦 宋世伟 邹琳玲[1] 安良 吴宇琼 晋梅[1] Lu Zhihao;Ao Bang;Song Shiwei;Zou Linling;An Liang;Wu Yuqiong;Jin Mei(School of Optoelectronic Materials&Technology,Jianghan University,Wuhan 430056,China)

机构地区：[1]江汉大学光电材料与技术学院,湖北武汉430056

出　　处：《山东化工》2023年第1期33-36,39,共5页Shandong Chemical Industry

基　　金：江汉大学大学生科研项目(NO.2022yb122)。

摘　　要：双碳目标的提出对化工生产中精馏塔的节能提出了新要求。本文以N,N-二甲基乙酰胺-水二元混合体系为例,采用Aspen Plus V 11化工模拟软件对普通精馏技术和双效精馏技术进行模拟与优化,并对两种不同精馏技术的能耗和环境进行评价。模拟计算结果表明,在相同的设计基础和分离要求下,采用双效精馏可明显降低分离能耗近40%且环境友好,具有较强的节能优势和较少的二氧化碳排放。另外,两种不同的双效精馏技术中,逆流双效精馏技术稍优于顺流双效精馏技术。The proposal of the two-carbon target puts forward new requirements for the energy-saving potential of distillation towers in chemical production.In this paper,taking the N,N-dimethylacetamide-water binary mixed system as an example,by using Aspen Plus V 11 software to simulate and optimize the conventional distillation technology and the double-effect distillation technology,the energy consumption and the environmental assessment for two different technologies are analyzed.The simulation results show that under the same design basis and separation requirements,the use of double-effect rectification can significantly reduce the energy consumption of separation by nearly 40%and be friendly to the environment,which means the double-effect distillation technology has a strong energy-saving advantage and a less carbon dioxide emissions.Moreover,among the two double-effect distillation technologies,the double-effect countercurrent distillation technology is slightly better than double-effect downstream distillation technology.

关 键 词：二甲基乙酰胺-水混合体系 双效精馏 模拟与优化 节能减排 

分 类 号：TQ028.3[化学工程]