https://scholars.lib.ntu.edu.tw/handle/123456789/625960
Title: | Conceptual design, optimization, and carbon emission analysis for the acrylonitrile/acetonitrile/water separation processes | Authors: | BOR-YIH YU Ciou, J.-W. Wu, P.-J. Wang, G.-B. |
Keywords: | Acrylonitrile; Heterogeneous extractive distillation; Hybrid extraction-distillation; Simulated annealing; Carbon emission analysis; EXTRACTIVE DISTILLATION; LIQUID-EQUILIBRIA; SOHIO PROCESS; VAPOR-LIQUID; ACRYLONITRILE; ACETONITRILE; SIMULATION | Issue Date: | 2021 | Publisher: | ELSEVIER | Journal Volume: | 122 | Start page/Pages: | 32 | Source: | Journal of the Taiwan Institute of Chemical Engineers | Abstract: | In this work, we firstly report on the rigorous design, optimization, and carbon emission analysis of the processes separating acrylonitrile (AN), acetonitrile (AC), and water. Two bi-sectional processes, which integrate heterogeneous extractive distillation with hybrid extraction-distillation (the HHED process), and that with pressure swing distillation (the HPSD process), are proposed. Compared with the existing configuration, operation using 30% less entrainer amount is found feasible for both processes, leading to 9.8% energy saving. Also, the optimized HHED process saves 4.8% total annual cost (TAC) and 5.8% carbon emission from the optimized HPSD process. Besides, implementing a vapor recompression cycle on the optimized HHED process reduces 31.1% CO2 emission but increases 6.6% of TAC. On the other hand, the heat-integrated HPSD process with an economizer design does not outperform the non-integrated HHED process. Finally, separation using heterogeneous azeotropic distillation or hybrid extraction-distillation process in single is conceptually rejected. Through this work, the industrial guidance could be provided. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/625960 | ISSN: | 18761070 | DOI: | 10.1016/j.jtice.2021.04.044 |
Appears in Collections: | 化學工程學系 |
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