文献类型：期刊文献

英文题名：Revisiting complex azeotropic distillation design: How feed composition can change separation sequences

作者：Yang, Zhenning[1];Gao, Tian[2];Yang, Ao[3];Sun, Shirui[4];Shi, Tao[1];Li, Zhongmei[5];Du, Wenli[5];Lin, Rongsheng[6];Kong, Zong Yang[7];Shen, Weifeng[1,5]

机构：[1]Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China;[2]Chongqing Technol Transfer Res Inst Co Ltd, Chongqing 401120, Peoples R China;[3]Chongqing Univ Sci & Technol, Coll Safety Sci & Engn, Chongqing, Peoples R China;[4]Yangtze Normal Univ, Sch Chem & Chem Engn, Chongqing 408100, Peoples R China;[5]East China Univ Sci & Technol, State Key Lab Ind Control Technol, Minist Educ, Shanghai 200237, Peoples R China;[6]Jurong Energy Xinjiang Co Ltd, Urumqi 841603, Xinjiang, Peoples R China;[7]Sunway Univ, Fac Engn & Technol, Sch Engn, 5 Jalan Univ, Selangor Darul Ehsan 47500, Malaysia

年份：2026

卷号：382

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20254619484350);WOS:【SCI-EXPANDED(收录号:WOS:001619406900009)】；

基金：We acknowledge the financial support provided by the Natural Science Foundation of China (No. 22278044); the Chongqing Science Fund for Distinguished Young Scholars (No. CSTB2022NSCQ-JQX0021); the Fundamental Research Funds for the Central Universities (No. 2024IAIS-QN004); The Chongqing Innovation Support Key Program for Returned Overseas Chinese Scholars (No. CX2023002); the Key Project of Technical Innovation and Application Development (No. CSTB2024TIAD-KPX0058); the Science and Technology Innovation Key R&D Program of Chongqing (No. CSTB2024TIAD-STX0032); the Xinjiang Autonomous Region Regional Collaborative Innovation Special Science and Technology Assistance Plan Project (No. 2024E02036); the Open Research Project of the State Key Laboratory of Industrial Control Technology, China (Grant No. ICT2024B01).

语种：英文

外文关键词：Separation feasibility; Feed composition; Process optimization; Distillation; Separations

摘要：The design of complex azeotropic distillation system are typically based on a fixed nominal feed composition, i. e., assuming the same process setup remains valid under expected disturbances. This sequential "control after design" strategy often overlooks a critical question: can variations in feed composition fundamentally alter the optimal separation sequence? In this work, we investigates the influence of feed composition on the optimal design and performance of a triple-column pressure-swing distillation with decanter (TCPSD-D) for multiazeotropes system. Three configurations were developed under two different feed compositions to explore how product sequence, pressure requirements, and utility usage shift with changing feed conditions. While two configurations based on the same feed required pressure manipulation to alter the separation order, a third configuration using a different feed achieved the same sequence without elevated pressure. Optimization results revealed that although all columns in the third configuration operated with low-pressure steam, the use of chilled water in a vacuum condenser led to the highest overall cost. In contrast, the first configuration demonstrated the best cost-energy balance. These findings highlight the critical role of feed composition in early-stage process design, where it can fundamentally influence separation feasibility, utility strategy, and economic outcomes.