粗甲醇精馏脱水热集成过程模拟与能耗分析  

Simulation and Energy Analysis for Heat Integrated Crude Methanol Distillation Dehydration Process

作　　者：王君[1] 严丽[1] 冯培良 李多松[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2015年第4期19-22,共4页Journal of Anhui University of Science and Technology:Natural Science

基　　金：安徽省教育厅基金重点资助项目(kj2012A084)

摘　　要：粗甲醇精馏脱水是一个能耗很高的过程,研究该过程的热集成对于节能降耗具有重要意义。对进料分割热集成(FS)、轻组分分割正向热集成(LSF)和轻组分分割反向热集成(LSR)三种流程进行了设计和严格模拟,计算结果表明:与单塔分离相比,FS热集成流程节能效果最明显,热公用工程节约55.3%,LSR次之,节约45.7%,LSF最差,节约28.1%;三种热集成流程的冷公用工程也有不同程度的节约,FS节约27.4%,LSR节约11.0%,LSF节约36.4%;还对各种流程精馏塔的总效率和塔径进行了估算。The dehydration of crude methanol distillation is a process with high energy consumption and the study of the heat integration for the process is of great importance in terms of saving energy and reducing consumption. Design and rigorous simulation of the three heat integrated flowsheets, i. e. , feed split （FS） heat integration, light split forward（LSR） heat integration and light split reverse （LSR） heat integration, were conducted. Com- pared with single column separation, the FS heat integration flowsheet performed the most prominent energy sav- ing effect, saving 55.3% of heating utility and the LSR heat integration flowsheet performed the second best sav- ing 45.7% of heating utility, whereas the LSF heat integration flowsheet performed he worst, saving 28.1% of heatng utility. Various amounts of cooling utility were saved in the three heat integrated flowsheets and 27.4%, 11.0% and 36.4% of cooling utility were saved for FS, LSR and LSF respectively. In addition, the overall effi- cencies and diameters for all the columns were estimated.

关 键 词：甲醇 精馏 热集成 模拟 能耗 

分 类 号：TQ021[化学工程]