Enhanced exergy cost optimization of operating conditions in FCCU main fractionator

doi:10.1016/j.cjche.2018.06.013

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (8): 1750-1757.DOI: 10.1016/j.cjche.2018.06.013

• Selected Papers from the 28th Chinese Process Control Conference • Previous Articles Next Articles

Enhanced exergy cost optimization of operating conditions in FCCU main fractionator

Chonglin Zhong¹, Yi Zheng¹, Shenghu Xu², Shaoyuan Li¹

1 Department of Automation, Shanghai Jiao Tong University, Key Laboratory of System Control and Information Processing, Ministry of Education, Shanghai 200240, China;
2 Sinopec Jiujiang Branch Corporation, Jiujiang 332004, China

Received:2017-11-19 Revised:2018-03-08 Online:2018-09-21 Published:2018-08-28
Contact: Shaoyuan Li,E-mail address:syli@sjtu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (61590924, 61673273, 61521063).

Enhanced exergy cost optimization of operating conditions in FCCU main fractionator

Chonglin Zhong¹, Yi Zheng¹, Shenghu Xu², Shaoyuan Li¹

1 Department of Automation, Shanghai Jiao Tong University, Key Laboratory of System Control and Information Processing, Ministry of Education, Shanghai 200240, China;
2 Sinopec Jiujiang Branch Corporation, Jiujiang 332004, China

通讯作者: Shaoyuan Li,E-mail address:syli@sjtu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (61590924, 61673273, 61521063).

Abstract

Abstract: Exergy indicates the maximal energy that can do work effectively. Different from optimization of product quality or calculation of generic energy conservation in most previous studies, the application of exergy analysis and exergy cost optimization in petrochemical industry is of great economic and environmental significance. Based on the main fractionator in Jiujiang Petrochemical Complex No. 2 FCCU, an enhanced exergy cost optimization under different operating conditions by adjusting set points of temperature and valves opening degree for flow control is studied in this paper in order to reduce exergy cost and improve the quality of energy. A steadystate optimization algorithm to enhance exergy availability and an objective function comprehensively considering exergy loss are proposed. On the basis of ensuring the quality of petroleum products, the economic benefits can be improved by optimizing the controllable variables due to the fact that exergy cost is decreased.

Key words: Exergy, Optimization of operating conditions, Fractionator, FCCU, Exergy Cost

摘要： Exergy indicates the maximal energy that can do work effectively. Different from optimization of product quality or calculation of generic energy conservation in most previous studies, the application of exergy analysis and exergy cost optimization in petrochemical industry is of great economic and environmental significance. Based on the main fractionator in Jiujiang Petrochemical Complex No. 2 FCCU, an enhanced exergy cost optimization under different operating conditions by adjusting set points of temperature and valves opening degree for flow control is studied in this paper in order to reduce exergy cost and improve the quality of energy. A steadystate optimization algorithm to enhance exergy availability and an objective function comprehensively considering exergy loss are proposed. On the basis of ensuring the quality of petroleum products, the economic benefits can be improved by optimizing the controllable variables due to the fact that exergy cost is decreased.

关键词: Exergy, Optimization of operating conditions, Fractionator, FCCU, Exergy Cost

Chonglin Zhong, Yi Zheng, Shenghu Xu, Shaoyuan Li. Enhanced exergy cost optimization of operating conditions in FCCU main fractionator[J]. Chin.J.Chem.Eng., 2018, 26(8): 1750-1757.

Chonglin Zhong, Yi Zheng, Shenghu Xu, Shaoyuan Li. Enhanced exergy cost optimization of operating conditions in FCCU main fractionator[J]. Chinese Journal of Chemical Engineering, 2018, 26(8): 1750-1757.

[1]	Yanli Zhang, Zhengkun Hou, Dong Yao, Xiaomin Qiu, Hongru Zhang, Peizhe Cui, Yinglong Wang, Jun Gao, Zhaoyou Zhu, Limei Zhong. Energy, exergy, economic and environmental comprehensive analysis and multi-objective optimization of a sustainable zero liquid discharge integrated process for fixed-bed coal gasification wastewater [J]. Chinese Journal of Chemical Engineering, 2023, 58(6): 341-354.
[2]	Xiaoyu Wang, Haibo Zhao, Mingze Su. A comparative process simulation study of Ca—Cu looping involving post-combustion CO₂ capture [J]. Chinese Journal of Chemical Engineering, 2020, 28(9): 2382-2390.
[3]	Yu Zhuang, Rui Yang, Lei Zhang, Jian Du, Shengqiang Shen. Simultaneous synthesis of sub and above-ambient heat exchanger networks including expansion process based on an enhanced superstructure model [J]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1344-1356.
[4]	Quancong Zhang, Zuqian Wu, Zhikai Cao, Qingyin Jiang, Hua Zhou. Simulation and heat exchanger network designs for a novel single-column cryogenic air separation process [J]. Chinese Journal of Chemical Engineering, 2019, 27(7): 1498-1509.
[5]	Yu Zhuang, Linlin Liu, Lei Zhang, Jian Du. Synthesis of indirect work exchange networks considering both isothermal and adiabatic process together with exergy analysis [J]. Chin.J.Chem.Eng., 2018, 26(8): 1644-1652.
[6]	Yang Lei, Danlin Zeng, Guanghui Wang. Improvement potential analysis for integrated fractionating and heat exchange processes in delayed coking units [J]. , 2016, 24(8): 1047-1055.
[7]	LUO Yiqing, FENG Shengke, SUN Changjiang, YUAN Xigang . A Two-step Design Method for Shaft Work Targeting on Low-temperature Process [J]. Chin.J.Chem.Eng., 2014, 22(6): 664-668.
[8]	XU Feng, JIANG Huirong, WANG Rui, LUO Xionglin. Influence of Design Margin on Operation Optimization and Control Performance of Chemical Processes [J]. Chin.J.Chem.Eng., 2014, 22(1): 51-58.
[9]	ZHANG Xiaobin, ZHANG Wei, ZHANG Xuejun . Entropy Analyses of Droplet Combustion in Convective Environment with Small Reynolds Number [J]. Chin.J.Chem.Eng., 2013, 21(6): 654-662.
[10]	LEI Yang, ZHANG Bingjian, HOU Xiaoqiong, CHEN Qinglin . A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process [J]. Chin.J.Chem.Eng., 2013, 21(3): 285-294.
[11]	BIAN Haijun, XU Wendong, LI Xiuxi, QIAN Yu. A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization [J]. , 2011, 19(3): 452-461.
[12]	WANG Zhifang, ZHENG Danxing. Exergy Analysis and Retrofitting of Natural Gas-based Acetylene process [J]. , 2008, 16(5): 812-818.
[13]	ZHU Ping. An Improved Calculation of the Thermodynamically Based Allocation of Cumulative Exergy Consumption in the Petroleum Distillation Process [J]. , 2008, 16(1): 104-107.

Enhanced exergy cost optimization of operating conditions in FCCU main fractionator

Enhanced exergy cost optimization of operating conditions in FCCU main fractionator

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 13

Recommended Articles

Metrics

Comments