通过复杂溶剂提取蒸分离乙乙醇的机械分析和过程模拟
Jiajie Liu1, Yueran Yin1, Sijia Dai2
1School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, China.
ACS omega
|June 24, 2024
概括
本研究探讨使用混合溶剂进行提取蒸,发现将有机溶剂与离子液体 (IL) 结合起来可以降低总成本和浪费. 这种方法提高了亚热混合物的分离效率.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 分离科学 分离科学
背景情况:
- 对化学过程来说,有效地分离亚热混合物至关重要.
- 传统的提取蒸 (ED) 依赖于高性能溶剂和优化的技术.
研究的目的:
- 调查使用二甲基硫氧化物 (DMSO) 和离子液 (IL),[EMIM][Ac]提取蒸乙烯酸和乙醇亚热.
- 分析ILs和亚热类之间的结构关系.
- 探索在ED中结合有机溶剂和ILs的成本和碳排放优势.
主要方法:
- 计算机辅助选用于溶剂选择.
- 使用 σ 形状,分子表面静电电位,相互作用能量和分离梯度分析结构关系.
- 使用Aspen Plus的过程模拟和使用遗传算法的全球优化.
主要成果:
- 纯有机溶剂和IL都显示出有效的分离.
- 基于IL的溶剂的混合溶剂系统显著降低了与纯有机溶剂相比的5.11%和与纯IL相比的21.98%的年度总成本 (TAC).
- 混合溶剂工艺最大限度地减少了有机溶剂挥发,降低了提取剂成本,导致的消耗减少9.43%,通过废热回收减少了27.17%的二氧化碳排放.
结论:
- 在提取蒸中将有机溶剂与离子液体相结合,可以带来显著的经济和环境效益.
- 这种混合方法为分离亚热混合物提供了一个可持续的替代方案.
- 这项研究为基于IL的混合溶剂在ED中的工业应用提供了理论基础.
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