摘要
从纤维素和半纤维素中提取的产品中,糠醛是一种有潜力的生物化工平台化学品。目前的糠醛精馏工艺需要消耗大量的能量,对糠醛精馏过程进行设计与模拟,能有效降低能耗,使得生物精炼工艺与石油精炼工艺相比具有经济优势。基于Aspen Plus平台建立的精馏模型对糠醛-水的分离过程进行设计与模拟,深入分析了进料位置、回流比、精馏塔塔板数等因素对整个体系的影响。针对进料位置进行灵敏度分析,最终得到精馏塔的主要结构参数和产品纯度为:实际塔板数为37块,进料位置为第22块塔板,塔顶流出物冷凝后水相回流,醛相作为糠醛产品,糠醛的回收率为99.81%,糠醛产品中糠醛的质量百分含量为97.12%,塔底得到含醋酸1.96%的稀醋酸水溶液。
Furfural is a potential biochemical platform chemical in products derived from cellulose and hemicellulose.The current furfural distillation process needs to consume a lot of energy,and the design and simulation of the furfural distillation process can effectively reduce the energy consumption,making the biorefining process has an economic advantage compared with the petroleum refining process.The separation process of furfural and water was designed and simulated based on the distillation model established on Aspen Plus platform,and the influences of feeding position,reflux ratio and number of rectifying column plates on the whole system were deeply analyzed.Based on the sensitivity analysis of the feeding position,the main structural parameters and product purity of the distillation column were finally obtained as follows.Actual number of trays was 37,the feed stage the 22 th tray,the furfural phase the productwith the refluxof aqueous phase,the 99.81%recovery of furfural,the 97.12% purity on weight basisandthe bottom product of 1.96% dilute acetic acid on weight basis.
作者
余一鸣
万钧
王君
YU Yiming;WAN Jun;WANG Jun(School of Chemical Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)
出处
《安徽理工大学学报（自然科学版）》
CAS
2021年第5期23-30,共8页
Journal of Anhui University of Science and Technology:Natural Science
基金
安徽省大学生创新训练基金资助项目(202010361077)。
关键词
糠醛
精馏
模拟
灵敏度分析
furfural
distillation
simulation
sensitivity analysis
