Are Thermally Coupled Distillation Columns Always Thermodynamically More Efficient for Ternary Distillations
Are Thermally Coupled Distillation Columns Always Thermodynamically More Efficient for Ternary Distillations
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DOI：
10.1021/ie980062m
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发表时间：
1998-06
影响因子：
4.2
通讯作者：
R. Agrawal;Z. Fidkowski
中科院分区：
文献类型：
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作者：
R. Agrawal;Z. Fidkowski
计算并比较了五种三元蒸馏配置将理想饱和液体蒸馏成纯产品流的热力学效率。这项研究的一个引人注目的结果是，对于完全耦合塔（Petlyuk）配置，这是已知的具有最低的热量需求的三元蒸馏，进料组成和相对挥发度的值的范围，它是最有效的配置是非常有限的。在三种热耦合塔配置中，侧精馏器和侧汽提器配置往往比完全耦合配置提供最有效的配置。通常，改进的直接和间接分流配置一起提供了比三个热耦合塔配置更多的进料组成和相对挥发度的最高效的配置。这两种构型的高热力学效率主要是由于它们的…
The thermodynamic efficiency of five ternary distillation configurations to distill ideal saturated liquids into pure product streams are calculated and compared. A striking result of this study is that for the fully coupled column (Petlyuk) configuration, which is known to have the lowest heat demand for ternary distillation, the range of values of feed composition and relative volatilities for which it is the most thermodynamically efficient configuration is quite limited. Among the three thermally coupled column configurations, the side-rectifier and side-stripper configurations tend to provide the most efficient configuration more often than the fully coupled configuration. Generally, the modified direct and indirect split configurations together provide the most thermodynamically efficient configuration for more feed compositions and relative volatilities than do the three thermally coupled column configurations. The high thermodynamic efficiency of these two configurations is primarily due to their ...