TY - JOUR
T1 - Target localization optimization of a superstructure triple-column extractive distillation with four-parallel evaporator organic Rankine cycles system based on advanced exergy analysis
AU - Yuan, Binhan
AU - Yang, Zhenning
AU - Yang, Ao
AU - Tao, Jiqiang
AU - Ren, Jingzheng
AU - Wei, Shun'an
AU - Shen, Weifeng
N1 - Funding Information:
We acknowledge the financial support provided by the National Key Research and Development Project (2019YFC0214403). We are also grateful to the comments from the anonymous reviewer.
Publisher Copyright:
© 2021
PY - 2021/10/1
Y1 - 2021/10/1
N2 - 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.
AB - 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.
KW - Energy conversion
KW - Exergy analysis
KW - Extractive distillation
KW - Genetic algorithm
KW - Organic Rankine cycle
KW - Waste recovery
UR - http://www.scopus.com/inward/record.url?scp=85106326817&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2021.118894
DO - 10.1016/j.seppur.2021.118894
M3 - Journal article
AN - SCOPUS:85106326817
SN - 1383-5866
VL - 272
JO - Separation and Purification Technology
JF - Separation and Purification Technology
M1 - 118894
ER -