Volume 14, Issue 2 (Journal of Control, V.14, N.2 Summer 2020)                   JoC 2020, 14(2): 47-61 | Back to browse issues page

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1- Department of Chemical Engineering, Hamedan University of Technology
Abstract:   (7070 Views)
The NGL refinery of the Sirri Island has a major role in the production of high-value products. One of the most important refinery units is the demethanizer unit, comprising of a complex network of distillation towers and heat exchangers. In the first step, using the Aspen Hysys software, a proper steady state model was developed for this unit in which the simulation of the main equipment that is, distillation towers and heat exchangers were carried out. The steady state simulation results are in good agreement with the data gathered from the real plant. Then, the simulation was transferred from steady state to dynamic mode in which the main equipment such as distillation towers and control valves were sized. Here, the available controllers which are currently present in the real plant, were added to the simulation. Using the auto tuning variation (ATV) method and by considering the desired behavior namely, stability, fast response, and absence of oscillation, the overall performance of the controllers were examined under different scenarios. Based on the results, it was identified that with carefully tuning the controllers parameters, much better performance can be achieved.
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Type of Article: Research paper | Subject: Special
Received: 2017/09/27 | Accepted: 2019/01/19 | Published: 2019/08/15

1. [1] پولادی برج، ب.، چهار لنگ، ش.، ثقه الاسلامی، ن.، "شبیه سازی دینامیکی و بهینه سازی برج جذب CO2 از C2H6 گاز طبیعی با استفاده از شبیه ساز ASPEN-HYSYS در فاز های 9 و10 پارس جنوبی"، نفت، گاز و پتروشیمی، 2010.
2. [2] Luyben, W. L., "Dynamic simulation of multi-effect evaporators", Chemical Engineering and Processing - Process Intensification, vol. 131, pp. 106-115, 2018. [DOI:10.1016/j.cep.2018.07.005]
3. [3] Khodadoost, M., Sadeghi, J., "Dynamic Simulation of Distillation Sequences in Dew Pointing Unit of South Pars Gas Refinery", Journal of chemical and petroleum engineering, vol. 45, no. 2, pp. 109-116, 2011.
4. [4] توكلي دستجردي، ف.، صادقي، ج.، حسن پور، س.، "شبيه سازي ديناميك واحد آمونياك پتروشيمي شيراز"، دومين كنفرانس بين المللي يافته هاي نوين پژوهشي در شيمي و مهندسي شيمي، 1395.
5. [5] پيماني، ع.، ملكي، ب.، حسين زاده، م.، صادقي، ج.، "شبيه سازي ديناميكي يك برج جداكننده‌ي آب و متانول و مقايسه‌ي دوساختار كنترلي براي خلوص محصولات"، سومين همايش ملي مديريت انرژي و محيط زيست، 1392.
6. [6] انساني، س.، صادقي، ج.، حسيني، س. م.، "شبيه سازي ديناميكي و كنترل واحد تقطير اتمسفريك پالايشگاه شيراز"، سومين كنفرانس علوم و مهندسي جداسازي، دانشگاه سيستان و بلوچستان، 1391.
7. [7] ثابت، م. ح.، كاهكش، ع.، حيدري، ح.، كاظمي، ع.، "شبيه سازي ديناميكي و بررسي پارامترهاي عملياتي برج متان زدايي واحد الفين پتروشيمي جم به منظور افزايش ظرفيت"، دومين كنفرانس ملي و بين المللي نفت، گاز، پالايش و پتروشيمي، 1394.
8. [8] جلالي، ع.، شفيعي، م.، مرادي، م.، "شبيه سازي و بهينه سازي راندمان بازيابي اتان در واحد متان زدايي با استفاده از روش SCG"، کنفرانس بین المللی افق های نو در علوم مهندسی، 1396.
9. [9] Jibril, K. L., Al-Humaizi, A. I., Idriss, A. A., Ibrahi, A. A., "Simulation of turbo-expander processes for recovering of natural gas liquids from natural gas", Saudi ARAMCO Journal of Technology, Fall, pp. 9-14, 2005.
10. [10] Najibi, S. H., Darabi, H., Kamali, M. J., "A Feasibility Study of the Technologies for Deep Ethane Recovery from the Gases Produced in One of the Iran Southern Fields", Iranian Journal of Oil & Gas Science and Technology, vol. 1, no. 1, pp. 13-24, 2012.
11. [11] Aspen Technology, "Dynamic Modeling", 2005.
12. [12] مدی، ب.، "جزوات دروس کنترل فرایندها 1 و 2"، گروه مهندسی شیمی، دانشگاه صنعتی همدان، 1395.
13. [13] Stephanopoulos, G., "Chemical process control: an introduction to theory and practice", Prentice-Hall international series in the physical and chemical engineering sciences, 1984.
14. [14] Friman, M., Waller, K. V., "Autotuning of Multiloop Control Systems", Industrial & Engineering Chemistry Research, vol. 33, no. 7, pp. 1708-1717, 1994. [DOI:10.1021/ie00031a011]
15. [15] Ogunnaike, B. A., Ray, W. H., "Process dynamics, modeling, and control", Topics in chemical engineering, New York, Oxford University Press, 1994.
16. [16] Al-Malah, K.I.M., Aspen Plus® Dynamics, in Aspen Plus®, K.I.M. Al-Malah, Editor, John Wiley & Sons, Inc., 2016. [DOI:10.1002/9781119293644]
17. [17] "اسناد و مدارک مربوط به پروژه NGL سیری"، شرکت TDE کانادا و شرکت طراحی و مهندسی انرژی (EIED).
18. [18] Mehrpooya, M., Gharagheizi, F., Vatani, A., "An Optimization of Capital and Operating Alternatives in a NGL Recovery Unit", Chemical Engineering & Technology, vol. 29, no. 12, pp. 1469-1480, 2006. [DOI:10.1002/ceat.200600220]
19. [19] Lin, H. M., "Peng-Robinson equation of state for vapor-liquid equilibrium calculations for carbon dioxide + hydrocarbon mixtures", Fluid Phase Equilibria, vol.16, no. 2, pp. 151-169, 1984. [DOI:10.1016/0378-3812(84)85028-1]
20. [20] Glitsch, "Ballast Tray Design Manual, Bulletin 4900, 3rd Ed.", Glitsch, The Separations Company, 1980.
21. [21] Medi, B., Monzure-Khoda, K., Amanullah, M., 2015, "Experimental Implementation of Optimal Control of an Improved Single-Column Chromatographic Process for the Separation of Enantiomers", Industrial & Engineering Chemistry Research, vol. 54, no. 25, 6527-6539. [DOI:10.1021/acs.iecr.5b00553]

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