乙酸乙酯
蒸馏
分馏
分数(化学)
色谱法
乙醇
精炼(冶金)
分馏塔
化学
共沸物
总压比
萃取(化学)
变压吸附
塔楼
质量分数
有机化学
吸附
工程类
机械工程
气体压缩机
结构工程
物理化学
作者
Jing Yang,Menglin Zhou,Yujie Wang,Xi Zhang,Gang Wu
出处
期刊:IOP conference series
[IOP Publishing]
日期:2017-12-01
卷期号:274: 012026-012026
被引量:4
标识
DOI:10.1088/1757-899x/274/1/012026
摘要
In the light of the azeotrope of ethyl acetate-ethanol-water, a process of pressure-swing distillation is proposed. The separation process is simulated by Aspen Plus, and the effects of theoretical stage number, reflux ratio and feed stage about the pressure-swing distillation are optimized. Some better process parameters are as follows: for ethyl acetate refining tower, the pressure is 500.0 kPa, theoretical stage number is 16, reflux ratio is 0.6, feed stage is 5; for crude ethanol tower, the pressure is 101.3 kPa, theoretical stage number is 15, reflux ratio is 0.3, feed stage is 4; for ethanol tower, the pressure is 101.3 kPa, theoretical stage number is 25, reflux ratio is 1.2, feed stage is 10. The mass fraction of ethyl acetate in the bottom of the ethyl acetate refining tower reaches 0.9990, the mass fraction of ethanol in the top of the ethanol tower tower reaches 0.9017, the mass fraction of water in the bottom of the ethanol tower tower reaches 0.9622, and there is also no ethyl acetate in the bottom of the ethanol tower. With laboratory tests, experimental results are in good agreement with the simulation results, which indicates that the separation of ethyl acetate ethanol water can be realized by the pressure-swing distillation separation process. Moreover, it has certain practical significance to industrial practice.
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