摘要
将一种具有新型反应精馏结构的双反应段反应精馏塔应用于乙二醇与乙酸连续两步酯化反应,详细分析了精馏塔的稳态性能并探讨其节能效果。以最小化总的年度费用(TAC)为目标,优化双反应段反应精馏塔结构,并将此优化结构与单反应段反应精馏塔优化结构进行比较。结果表明在双反应段反应精馏塔中,设计变量的增加能够有效协调两步反应之间的关系,提高反应效率和分离效果,使双反应段反应精馏塔TAC减少了23.58%,实现节能效果。
In this paper,a reactive distillation system with double reactive sections is proposed. The novel reactive distillation system is applied for two-step consecutive esterification of ethylene glycol and acetic acid with a stoichiometric mole ratio in the presence of Amberlyst 36. By analyzing the steady state performance of the system,the possibility of saving energy was explored. The system was optimized by minimizing the total annual cost（ TAC） and then compared with a conventional reactive distillation,which consists of a rectifying section,a reactive section and a stripping section. Simulation results demonstrate that a reactive distillation system with double reactive section has better steady-state performance and also reduces TAC by 23. 58%. The increase in design freedom degree contributes to a coordinated effect between the two step reactions,thus improving reaction efficiency and separation efficiency.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第1期26-33,共8页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
关键词
反应精馏
连续反应
双反应段
reactive distillation
consecutive reactions
double reactive sections
