Target localization optimization of a superstructure triple-column extractive distillation with four-parallel evaporator organic Rankine cycles system based on advanced exergy analysis

被引：26
作者：
Yuan, Binhan [1 ,2 ]
Yang, Zhenning [3 ]
Yang, Ao [1 ,2 ,4 ]
Tao, Jiqiang [5 ]
Ren, Jingzheng [4 ]
Wei, Shun'an [1 ,2 ]
Shen, Weifeng [1 ,2 ]
机构：
[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
[2] Chongqing Key Lab Theoret & Computat Chem, Chongqing, Peoples R China
[3] Chongqing Changfeng Chem Ind Co Ltd, Chongqing 401252, Peoples R China
[4] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hong Kong, Peoples R China
[5] Chongqing Unisplendour Chem Co Ltd, Chongqing 401252, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2021年 / 272卷
关键词：
Exergy analysis; Organic Rankine cycle; Waste recovery; Energy conversion; Genetic algorithm; Extractive distillation; ENERGY; DESIGN; ORC; INTEGRATION;
D O I：
10.1016/j.seppur.2021.118894
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The energy analysis and optimization of process system aiming to solve the problems of high consumption, low efficiency and unreasonable use of energy in the process of energy utilization has been widely researched and developed in recent decades. In this work, advanced exergy analysis was carried out for the triple-column extractive distillation (TCED) process separating ternary azeotropic mixture of ACN/EtOH/H2O. The total exergy destruction is 1097.69 KW. The avoidable exergy destruction, is 29.20%, mainly caused by the cooler and three condensers. Based on the thermodynamic analysis results, a superstructure TCED with four-parallel evaporator organic Rankine cycles (FPE-ORC) system is proposed, four working fluids were selected. An improved genetic algorithm is used to obtain the optimal operating parameters of the ORC system by using the exergy efficiency and annual net profit (ANP) of the ORC as two conflict objective functions. Compare with existing process, the FPE-ORC system with working fluid R600 provides the highest exergy efficiency of 12.27%, with working fluid R600a leads to the best economic benefit of 6.43 E + 4 dollar/year.
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页数：13
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