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How to Improve the Energy Savings in Distillation and Hybrid Distillation‐Pervaporation Systems

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As the worldwide demand for energy is growing, engineers are facing a challenge to design plants with minimum energy requirements. Distillation is an energy intensive process regardless of the products being separated. Using as an example the separation of alcohol–aqueous mixture, this article describes some options applicable to both revamp and new installations where the reduction of energy consumption is achieved. The “Hybrid” application is represented by the Water‐Tetrahydrofurane (THF) separation comparing a conventional two column Pressure Swing Distillation(PSD) system with a pressure distillation using a membrane unit. The main focus is on energy savings for a given separation problem trough the introduction of membrane unit.
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Keywords: Distillation; divided wall column; membrane technology; pervaporation

Document Type: Research Article

Affiliations: 1: Sulzer Chemtech, USA, Inc. 2: Sulzer Chemtech Ltd, Switzerland

Publication date: 2006-01-01

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