文献类型：期刊文献

英文题名：Process modelling, optimisation and analysis of heat recovery energy system for petrochemical industry

作者：Liu, Yurong[1];Yang, Minglei[1,3];Ding, Yuxing[2];Wang, Meihong[1,2,5];Qian, Feng[1,3,4,6]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Control & Optimisat Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Sheffield, Dept Chem & Biol Engn, Sheffield S1 3JD, England;[3]East China Univ Sci & Technol, Engn Res Ctr Proc Syst Engn, Minist Educ, Shanghai 200237, Peoples R China;[4]Tongji Univ, Shanghai Inst Intelligent Sci & Technol, Shanghai 200092, Peoples R China;[5]Mappin St, Sheffield S1 3JD, England;[6]130 MeiLong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：381

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20224813171779);WOS:【SCI-EXPANDED(收录号:WOS:000894060400004)】；

基金：This work was supported by National Natural Science Foundation of China (Basic Science Center Program: 61988101) , International (Regional) Cooperation and Exchange Project (61720106008) , National Natural Science Fund for Distinguished Young Scholars (61925305) , Fundamental Research Funds for the Central Universities and Shanghai AI Lab. The UK authors would like to acknowledge the financial support of the EU RISE project OPTIMAL (Ref: 101007963) .

语种：英文

外文关键词：Process optimisation; Waste heat recovery; Heat exchanger network; Organic rankine cycle; Petrochemical plant; Phase changing streams

摘要：The petrochemical industry is an energy-intensive process. Heat exchanger network (HEN) is widely applied in existing petrochemical plants used to save energy. However, there is still some amount of low-grade heat wasted. No mathematical model can directly tackle the problems with majority of phase-changing process streams. Therefore, this study aims to optimise an extended low-grade heat recovery model for the petrochemical plant by integrating the organic Rankine cycle (ORC) with HEN. A mixed-integer nonlinear programming steady-state model was first developed. Then, the ORC operation conditions were optimised simultaneously. Finally, the thermodynamics (energy and exergy) and economic analysis were performed to evaluate the system perfor-mance, with 41 MW more heat recovered, 2.01% higher exergy efficiency and 3219 k$/year less total annual cost, compared with HEN only. Furthermore, the optimisation results indicate that the proposed energy system performs with 386 MW of recovered heat from the process streams, 82.13% of the overall exergy efficiency, 3.94 MW of net power generated from ORC, and 4416 k$/year of electricity profit. Research presented in this paper hopes to shed light on design and operation of the petrochemical industry for energy savings and cost reduction.