摘要
针对传统的精馏分离工艺存在的高耗能问题,以苯-甲苯物系为研究对象,提出了更为节能有效的多效精馏分离工艺流程,采用化工模拟软件AspenPlus分别对单塔精馏、双效顺流与逆流精馏、三效顺流与逆流精馏工艺流程进行模拟与优化,以确定适宜的操作条件和优化参数;并将多效精馏工艺流程模拟的结果与单塔精馏相比较,得到各工艺的节能情况。结果表明,相较于单塔精馏工艺,三效逆流精馏工艺的节能效果最佳,塔釜再沸器加热器能耗节省52.6%。
Aiming at the problem of high energy consumption in traditional distillation separation process, taking benzene-toluene system as the research object,a more energy-saving and effective multi-effect distillation separation process is proposed. The single column distillation, double-effect co-current and counter-current distillation, three-effect co-current and counter-current distillation process are simulated and optimized by using chemical simulation software Aspen Plus to determine the appropriate operating conditions and optimization parameters. The simulation results of multi-effect distillation process are compared with those of single-tower distillation, and the energy saving of each process is obtained. The results show that compared with the single-tower distillation process, the three-effect countercurrent distillation process has the best energy saving effect, and the energy consumption of the reboiler heater in the tower bottom is saved by52.6 %.
作者
余栋梁
李芳
张荣莉
李兴扬
汪海燕
Yu Dongliang;Li Fang;Zhang Rongli;Li Xingyang;Wang Haiyan(College of biological and chemical engineering, Anhui Polytechnic University, Wuhu 24100;East China Engineering Science and Technology Co., Ltd., Hefei 230022, China)
出处
《广东化工》
CAS
2019年第7期20-21,41,共3页
Guangdong Chemical Industry
基金
国家自然科学基金(No 21504001)
关键词
多效精馏
ASPEN
PLUS
优化
节能
multi-effect distillation
aspen plus
optimization
energy saving
