A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

doi:10.1016/S1004-9541(13)60472-4

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (3): 285-294.DOI: 10.1016/S1004-9541(13)60472-4

• 过程系统工程与过程安全 • 上一篇下一篇

A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

雷杨, 张冰剑, 侯小琼, 陈清林

School of Chemistry and Chemical Engineering, Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou 510275, China

收稿日期:2012-07-24 修回日期:2012-11-05 出版日期:2013-03-28 发布日期:2013-04-01
通讯作者: CHEN Qinglin
基金资助:
Supported by the National Natural Science Foundation of China (21076233), the Major Science and Technology R&D Program of Guangdong Province (2010A080801003).

A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

LEI Yang, ZHANG Bingjian, HOU Xiaoqiong, CHEN Qinglin

School of Chemistry and Chemical Engineering, Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen University, Guangzhou 510275, China

Received:2012-07-24 Revised:2012-11-05 Online:2013-03-28 Published:2013-04-01
Supported by:
Supported by the National Natural Science Foundation of China (21076233), the Major Science and Technology R&D Program of Guangdong Province (2010A080801003).

摘要/Abstract

摘要： Delayed coking is an important process in refinery to convert heavy residue oils from crude distillation units (CDUs) and fluid catalytic cracking units (FCCUs) into dry gas, liquefied petroleum gas (LPG), gasoline, diesel, gas oils and cokes. The main fractionator, separating superheating reaction vapors from the coke drums into lighter oil products, involves a de-superheating section and a rectifying section, and couldn't be simulated as a whole column directly because of non-equilibrium in the de-superheating section. It is very important to correctly simulate the main fractionator for operational parameter and energy-use optimization of delayed cokers. This paper discusses the principle of de-superheating processes, and then proposes a new simulation strategy. Some key issues such as composition prediction of the reaction vapors, selection of thermodynamic methods, estimation of tray efficiency, etc. are discussed. The proposed simulation approach is applied to two industrial delayed cokers with typical technological processes in a Chinese refinery by using PRO/II. The simulation results obtained are well consistent with the actual operation data, which indicates that the presented approach is suitable to simulate the main fractionators of delayed cokers or other distillation columns consisting of de-superheating sections and rectifying sections.

关键词: delayed coking, de-superheating process, fractionator, simulation

Abstract: Delayed coking is an important process in refinery to convert heavy residue oils from crude distillation units (CDUs) and fluid catalytic cracking units (FCCUs) into dry gas, liquefied petroleum gas (LPG), gasoline, diesel, gas oils and cokes. The main fractionator, separating superheating reaction vapors from the coke drums into lighter oil products, involves a de-superheating section and a rectifying section, and couldn't be simulated as a whole column directly because of non-equilibrium in the de-superheating section. It is very important to correctly simulate the main fractionator for operational parameter and energy-use optimization of delayed cokers. This paper discusses the principle of de-superheating processes, and then proposes a new simulation strategy. Some key issues such as composition prediction of the reaction vapors, selection of thermodynamic methods, estimation of tray efficiency, etc. are discussed. The proposed simulation approach is applied to two industrial delayed cokers with typical technological processes in a Chinese refinery by using PRO/II. The simulation results obtained are well consistent with the actual operation data, which indicates that the presented approach is suitable to simulate the main fractionators of delayed cokers or other distillation columns consisting of de-superheating sections and rectifying sections.

Key words: delayed coking, de-superheating process, fractionator, simulation

雷杨, 张冰剑, 侯小琼, 陈清林. A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process[J]. Chinese Journal of Chemical Engineering, 2013, 21(3): 285-294.

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.

参考文献

1 Valayavin, G.G., Khukhrin, E.A., Valyavin, K.G., “The place of delayed coking in modern oil refineries”, Chem. Tech. Fuels. Oil+., 43 (3), 191-196 (2007).

2 Chen, Q.L., Yin, Q.H., Wang, S.P., Hua, B., “Energy-use analysis and improvement for delayed coking units”, Energy, 29, 2225-2237 (2004).

3 William, L.L., Distillation Design and Control Using ASPEN Simulation, Wiley-AIChE, New Jersey (2006).

4 Gerald, L.K., Steady State Simulation of an Oil Refinery Using Commercial Software, Kaes Consulting publishing, Georgia (2007).

5 Oyeleye, O.O., Kramer, M.A., “Qualitative simulation of chemical process systems-steady-state analysis”, AIChE J., 34 (9), 1441-1454 (1988).

6 Schnepper, C.A., Stadtherr, M.A., “Robust process simulation using interval methods”, Comput. Chem. Eng., 20 (2), 187-199 (1996).

7 Santos, R.A., Normey-Rico, J.E., Gomez, A.M., Arconada, L.F.A., Moraga, C.D., “Distributed continuous process simulation: An industrial case study”, Comput. Chem. Eng., 32 (6), 1195-1205 (2008).

8 Zheng, L.G., Edward, F., “ASPEN simulation of cogeneration plants”, Energy Convers. Manage., 44 (11), 1845-1851 (2003).

9 Eric, C. C., “Don't gamble with physical properties for simulations”, Chem. Eng. Prog., 10, 35-46 (1996).

10 Chau-Chyun, C., Paul, M.M., “Applied thermodynamics for process modeling”, AIChE J., 48 (2), 194-200 (2002).

11 Hao, X., Djatmiko, M. E., Xu, Y. Y., Wang, Y. N., Chang, J., Li, Y. W., “Simulation analysis of a gas-to-liquid process using Aspen Plus”, Chem. Eng. Technol., 31 (2), 188-196 (2008).

12 Wang, S.F., Zhao, Y.H., Wen, H., Xu, Z.H., “Simulation study of a novel process co-producing synthesis gas and light olefins”, Chem. Eng. Technol., 31 (10), 1424-1432 (2008).

13 Golden, S. W., Villalanti, D. C., Martin, G. R., “Feed characterization and deep-cut vacuum columns: Simulation and design”, AIChE Spring National Meeting, April 18-20, 47a, Atlanta, Georgia (1994).

14 Plesu, V., Bumbac, G., Iancu, P., Ivanescu, I., Popescu, D.C., “Thermal coupling between crude distillation and delayed coking units”, Appl. Therm. Eng., 23 (14), 1857-1869 (2003).

15 Wang, C.H., Chen, Z.J., “Energy analysis and improvement of delayed coking unit”, Acta Petrolei Sinica (Petroleum Processing section), 26 (5), 700-705 (2010). (in Chinese)

16 Krishnamurthy, R., Taylor, R., “A nonequilibrium stage model of multicomponent separation processes. Part I: Model description and method of solution”, AIChE J., 31 (3), 449-456 (1985).

17 Krishnamurthy, R., Taylor, R., “A nonequilibrium stage model of multicomponent separation processes. Part II: Comparison with experiment”, AIChE J., 31 (3), 456-465 (1985).

18 Krishnamurthy, R., Taylor, R., “A nonequilibrium stage model of multicomponent separation processes. Part III: The influence of unequal component-efficiencies in process design problems”, AIChE J., 31 (12), 1973-1985 (1985).

19 Powers, M.F., Vickeryt, D.J., Arehole, A., Tayer, R., “A nonequilibrium stage model of multicomponent separation processes V. Computational methods for solving the model equations”, Comput. Chem. Eng., 12 (12), 1229-1241 (1988).

20 Kooijman, H.A., Tayler, R., “A nonequilibrium model for dynamic simulation of tray distillation columns”, AIChE J., 41 (8), 1852-1863 (1995).

21 Wang, H.J., “The choice of column stages efficiencies in simulation”, Petrochem. Ind. Technol., 10, 31-33 (2003). (in Chinese)

[1]	Jiahao Xing, Huaizhi Han, Ruitian Yu, Wen Luo. Numerical simulation of flow and heat transfer of n-decane in sub-millimeter spiral tube at supercritical pressure[J]. 中国化学工程学报, 2023, 60(8): 173-185.
[2]	Jindong Dai, Chi Zhai, Jiali Ai, Guangren Yu, Haichao Lv, Wei Sun, Yongzhong Liu. A cellular automata framework for porous electrode reconstruction and reaction-diffusion simulation[J]. 中国化学工程学报, 2023, 60(8): 262-274.
[3]	Lijuan Zhao, Zhe Tan, Xiaoguang Zhang, Qijun Zhang, Wei Wang, Qiang Deng, Jie Ma, De'an Pan. Research on process modeling and simulation of spent lead paste desulfurization enhanced reactor[J]. 中国化学工程学报, 2023, 60(8): 293-303.
[4]	Jian Han, Xinhua Liu, Shanwei Hu, Nan Zhang, Jingjing Wang, Bin Liang. Optimization of decoupling combustion characteristics of coal briquettes and biomass pellets in household stoves[J]. 中国化学工程学报, 2023, 59(7): 182-192.
[5]	Wende Tian, Jiawei Zhang, Zhe Cui, Haoran Zhang, Bin Liu. Microscopic mechanism study and process optimization of dimethyl carbonate production coupled biomass chemical looping gasification system[J]. 中国化学工程学报, 2023, 58(6): 291-305.
[6]	Huan-Huan Yin, Yin-Lei Han, Xiao Yan, Yi-Xin Guan. Proanthocyanidins prevent tau protein aggregation and disintegrate tau filaments[J]. 中国化学工程学报, 2023, 57(5): 63-71.
[7]	Jixiang Liu, Xin Zhou, Gengfei Yang, Hui Zhao, Zhibo Zhang, Xiang Feng, Hao Yan, Yibin Liu, Xiaobo Chen, Chaohe Yang. Conceptual carbon-reduction process design and quantitative sustainable assessment for concentrating high purity ethylene from wasted refinery gas[J]. 中国化学工程学报, 2023, 57(5): 290-308.
[8]	Shengfeng Luo, Song Zhang, Yiping Zeng, Hui Zhang, Lili Zheng, Zhaopeng Xu. Study on oxygen transport and titanium oxidation in coating cracks under parallel gas flow based on LBM modelling[J]. 中国化学工程学报, 2023, 56(4): 15-24.
[9]	Jikai Dong, Bing Wang, Xinjie Wang, Chenxi Cao, Shikuan Chen, Wenli Du. Optimization of sensor deployment sequences for hazardous gas leakage monitoring and source term estimation[J]. 中国化学工程学报, 2023, 56(4): 169-179.
[10]	Shuangfei Zhao, Yingying Nie, Wenyan Zhang, Runze Hu, Lianzhu Sheng, Wei He, Ning Zhu, Yuguang Li, Dong Ji, Kai Guo. Microfluidic field strategy for enhancement and scale up of liquid–liquid homogeneous chemical processes by optimization of 3D spiral baffle structure[J]. 中国化学工程学报, 2023, 56(4): 255-265.
[11]	Qiaoqiao Liu, Guihong Lin, Jian Zhou, Liangliang Huang, Chang Liu. Hydrogen-bond mediated and concentrate-dependent NaHCO₃ crystal morphology in NaHCO₃–Na₂CO₃ aqueous solution: Experiments and computer simulations[J]. 中国化学工程学报, 2023, 55(3): 49-58.
[12]	Fufeng Liu, Luying Jiang, Jingcheng Sang, Fuping Lu, Li Li. Molecular basis of cross-interactions between Aβ and Tau protofibrils probed by molecular simulations[J]. 中国化学工程学报, 2023, 55(3): 173-180.
[13]	Pan Huang, Zekai Zhang, Yuxin Chen, Changwei Liu, Yong Zhang, Cheng Lian, Yajun Ding, Honglai Liu. Multi-scale simulation of diffusion behavior of deterrent in propellant[J]. 中国化学工程学报, 2023, 54(2): 29-35.
[14]	Jialei Sha, Chenyi Liu, Zhihong Ma, Weizhong Zheng, Weizhen Sun, Ling Zhao. Understanding the interfacial behaviors of benzene alkylation with butene using chloroaluminate ionic liquid catalyst: A molecular dynamics simulation[J]. 中国化学工程学报, 2023, 54(2): 44-52.
[15]	Baodong Zhao, Yinglei Wang, Fulei Gao, Yajing Liu, Weixiao Liu, Feng Ding. Understanding the alkyl effect of geminal dinitropropyl ester energetic plasticizers on hydroxyl terminated polybutadiene (HTPB): Simultaneous tuning on low temperature behavior and processability[J]. 中国化学工程学报, 2023, 54(2): 364-371.

A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

A Novel Strategy for Simulating the Main Fractionator of Delayed Cokers by Separating the De-superheating Process

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价