https://scholars.lib.ntu.edu.tw/handle/123456789/445377
標題: | Energy-Saving Design and Control of a Methyl Methacrylate Separation Process | 作者: | Chang, W.-L. Chien, I.-L. I-LUNG CHIEN |
公開日期: | 2016 | 卷: | 55 | 期: | 11 | 起(迄)頁: | 3064-3074 | 來源出版物: | Industrial and Engineering Chemistry Research | 摘要: | An alternative design for the separation of a mixture including methyl methacrylate, methanol, and water is investigated as compared to a previous design using the same process units. In this alternative design, top and bottom products of the distillation column are designed to be at unstable and stable nodes, respectively. Thus, significant savings in the steam cost (16.3%) can be realized as opposed to the previous design of placing the bottom product at a saddle point. Another benefit is that the loss of methyl methacrylate product through the water outlet stream is also less than that of the previous design. This represents another 9.6% savings of the operating cost for this alternative design. Furthermore, an overall control structure for this alternative design is also devised based on a novel way of using open-loop and closed-loop sensitivity tests. By the control of a temperature difference at two trays of the distillation column and another single-tray temperature at the stripper, both MMA and water products can be maintained at high purities despite large variations in feed flow rate and feed composition changes. © 2016 American Chemical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/445377 | DOI: | 10.1021/acs.iecr.6b00391 | SDG/關鍵字: | Acrylic monomers; Design; Distillation columns; Energy conservation; Esters; Alternative designs; Energy-saving design; Feed compositions; Methyl methacrylates; Overall control structure; Sensitivity tests; Separation process; Temperature differences; Product design |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。