Effect of Solvent on Controllability in Extractive Distillation
Effect of Solvent on Controllability in Extractive Distillation
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DOI：
10.1021/ie701757d
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发表时间：
2008-05
影响因子：
4.2
通讯作者：
W. Luyben
中科院分区：
文献类型：
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作者：
W. Luyben
关于溶剂选择对萃取精馏系统稳态设计的影响，已有大量的书籍和论文。萃取蒸馏被广泛用于通过加入吸引其中一种组分的高沸点溶剂来分离均相二元共沸物。这些系统通常具有萃取塔和溶剂回收塔。这两种产物从两个塔的馏出物流中除去。溶剂从溶剂回收底部循环回到萃取塔顶部附近。Kossack等人最近的论文（Chem.Eng.Res.Dev.，详细讨论了稳态经济设计问题，并给出了几个使用各种溶剂分离丙酮和甲醇的例子。一些溶剂驱动萃取塔中的丙酮塔顶馏出物，而另一些溶剂驱动萃取塔中的甲醇塔顶馏出物。
There have been numerous books and papers dealing with the effect of solvent selection on the steady-state design of extractive distillation systems. Extractive distillation is widely used to separate homogeneous binary azeotropes by adding a higher-boiling solvent that attracts one of the components. These systems typically feature an extractive column and a solvent-recovery column. The two products are removed in the distillate streams from the two columns. The solvent is circulated from the base of the solvent recovery back to near the top of the extractive column. A recent paper by Kossack et al. (Chem. Eng. Res. Dev., in press) discusses in detail the steady-state economic design issues and presents several examples that use a variety of solvents for the separation of acetone and methanol. Some solvents drive the acetone overhead in the extractive column, while others drive the methanol overhead in the extractive column.This paper extends this work to compare the dynamic performance of the acetone/me...