萃取精馏隔壁塔三种等价模型分离乙腈-水体系流程模拟与优化

Natural Gas Chemical Industry(2021)

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Abstract
采用精馏隔壁塔的三种等价模型,借助Aspen Plus对乙腈-水分离进行了模拟.通过灵敏度分析、TAC分析和能耗分析,研究了不同等价模型在分离共沸体系方面的适用性.结果表明:针对萃取精馏,隔壁塔三种等价模型均可用于模拟分离乙腈-水体系;各模型均体现出节能效果,相较于传统的萃取精馏塔,两塔模型节能12.62%,三塔模型节能22.28%,四塔模型节能14.10%;总费用方面,三塔模型比两塔模型减少11.73%,比四塔减少15.26%.
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