摘要
热集成反应分离过程通常指在反应与分离过程之间实现热量耦合,具有过程能耗小、投资费用低等优点。本研究提出了一种新反应分离工艺即反应吸收用于月桂酸甲酯的合成。通过Aspen Plus软件分别对反应精馏与反应吸收过程进行稳态建模。结果表明,与反应精馏相比,反应吸收过程具有明显的节能效果。由于反应吸收工艺仅使用了一个反应吸收塔,因此能够减少设备投资。此外,对反应吸收合成月桂酸甲酯工艺的动态性能进行了研究,提出的控制结构能够有效地抵抗进料流量扰动,具有良好的可控性。由此可见,反应吸收工艺合成长链脂肪酸酯是一项具有发展潜力的生产技术。
Heat integrated reactive separation process, which achieves thermal coupling between the reaction and separation processes, possesses the advantages of lower energy consumption and investment cost. In this study, a novel reactive absorption process was proposed for the methyl laurate synthesis by esterification of lauric acid. The steady-state models for reactive distillation and reactive absorption were established, respectively by the Aspen Plus simulator. The results show that significant energy saving of the reactive absorption process can be achieved, compared with the reactive distillation process. The investment cost of the reactive absorption process can also be reduced due to the use of only one column. Moreover, the dynamic performance of the reactive absorption process was investigated and a control structure was proposed. It is proved that the proposed control structure can handle the feed flow rate disturbance well, showing a good controllability of the reactive absorption process. Therefore, the reactive absorption process for synthesis of fatty acid ester with long chains is an attractive technology with development potential.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2016年第11期48-55,共8页
Petroleum Processing and Petrochemicals
基金
国家自然科学基金资助项目(21276279
21476261)
中央高校基本科研业务费专项资金项目(15CX06042A)
关键词
月桂酸酯化
反应吸收
稳态设计
灵敏度分析
动态控制
lauric acid esterification
reactive absorption
steady-state design
sensitivity analysis
dynamic control
