ENERGY-SAVING DISTILLATION DESIGNS IN ETHANOL-PRODUCTION

被引：39

作者：

COLLURA, MA ^{[1
]}

LUYBEN, WL ^{[1
]}

机构：

[1] LEHIGH UNIV, DEPT CHEM ENGN, BETHLEHEM, PA 18015 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1988年 / 27卷 / 09期

关键词：

Ethanol--Distillation; -; Evaporation; Evaporators;

D O I：

10.1021/ie00081a021

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A study is made of energy-saving options for the distillation of a dilute, aqueous ethanol solution to produce a distillate close to the azeotrope composition. Conventional energy-saving techniques such as multiple heat-integrated columns, vapor recompression, and heat integration with the evaporation section are analyzed and compared. The most economical alternatives and conditions are identified. Sensitivity of the designs and costs to changes in design parameters and utility costs is studied. For a 95 vol percent ethanol distillate, the most economical designs included vapor recompression or a two-column design with split feed for distillation and vapor recompression for the evaporation section. For higher purity distillate, vapor recompression and a two-column design with heavy split proved most attractive.

引用

页码：1686 / 1696

页数：11

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