Design and Control of Various Azeotropic Distillation Systems

• Main Authors: Chung-Chih Hsu, 許仲志
• Other Authors: I-Lung Chien
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/65260842884513141191

碩士 === 國立臺灣科技大學 === 化學工程系 === 98 === The design and control of three dehydration process system via azeotropic distillation will be investigated in this thesis. In azeotropic distillation system that commonly divide into three parts, heterogeneous azeotropic distillation, homogeneous azeotropic distillation and pressure swing distillation. First in the heterogeneous azeotropic distillation system considers a flowsheet for the separation of the 1,4 - Dioxane/water azeotropes that comparing Ethyl acetate and Benzene as entrainer. Also use pressure swing distillation system to separate this azeotropes. Second system is using heterogeneous azeotropic distillation system to separate Methyl methacrylate (MMA)/methanol/water. Design with two columns and a decanter or design with a single column with side flow and a decanter are used. The final system is to study a homogeneous azeotropic distillation column system for the separation of Propylene Glycol Monomethyl Ether (PM) and water using Sulfolane as entrainer. The proposed flowsheet should be a two-column system which contains a extractive distillation column and a entrainer recovery distillation column. The optimal design flowsheet has been established for the above three system by minimizing Total Annual Cost (TAC) of the design flowsheet. A very simple overall control strategy has also been proposed for the above systems which requires only one tray temperature control loop in each column to hold the high-purity specifications of the products.