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کد مقاله : JEST-1704-3486 (R3) بازدید : 162 صفحه: 15 - 28

10.22034/jest.2020.25867.3486

نوع مقاله: پژوهشی

کاربرد آنالیز ترکیبی پینچ و اگزرژی در بهینه‌سازی انرژی و آلاینده‌ها در نیروگاه‌های حرارتی بخار

محورهای موضوعی : آلودگی صنعتی

محمد حسن خوشگفتارمنش 1

1 - استادیار، بخش علوم حرارتی و سیستم‌های انرژی، گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه قم، قم، ایران*(مسوول مکاتبات)

تاریخ دریافت : 1396/01/16 تاریخ پذیرش : 1396/10/20 تاریخ انتشار : 1398/09/01

کلید واژه: تحلیل ترکیبی پینچ و اگسرژی, آلاینده‌ها, بهینه‌سازی, نیروگاه بخار,

چکیده مقاله :

زمینه و هدف: توانایی تکنولوژی پینچ در ارایه یک روش کلی در طراحی و تحلیل فرایندها می‌باشد، ولی این تکنولوژی در تحلیل سیستم‌هایی که علاوه بر حرارت شامل توان نیز هستند ناتوان است. از طرف دیگر، آنالیز اگزرژی علاوه بر توانایی تحلیل سیستم‌های شامل حرارت و توان، این توانایی را دارد که قسمت های غیرموثر سیستم را شناسایی و بیش ترین اصلاحات ممکن سیستم را تعیین کند. روش بررسی: محدودیت اصلی آنالیز اگزرژی عدم ارایه یک روش جامع در طراحی سیستم است. آنالیز ترکیبی پنچ و اگزرژی[1]، که از ترکیب دو روش ذکر شده به دست می‌آید با استفاده از توانایی هر دو روش، محدودیت‌های هر دو روش را رفع می‌کند. در این مقاله سعی شده است، با معرفی نیروگاه رامین اهواز به عنوان نیروگاه مورد مطالعه، با استفاده از روش CPEA اصلاحات موثر شناسایی و مورد بررسی قرار گیرد. یافته ها:سه سناریو اصلاحی پیشنهادی به منظور بهینه سازی نیروگاه مورد نظر استفاده شده است که عبارتند از :1-نزدیک کردن پینچ ها، 2-افزایش بخار در بویلر 3-کاهش فشار کندانسور. بحث و نتیجه گیری: نتایج نشان می دهد امکان افزایش بازده نیروگاه مورد مطالعه در حدود 7/1 درصد افزایش با به کار بردن این روش وجود دارد. هم چنین میزان مصرف سوخت1569متر مکعب در ساعت و تولید گازهای خروجی در حدود 7/1 درصد (معادل 20 تن بر ساعت) کاهش می یابد. لذا تولید آلاینده ها به نحو چشم گیری کاهش می یابد. برای شبیه سازی نیروگاه از نرم افزار(Steam Pro) Thermoflow و برای تحلیل CPEA از نرم افزار Aspen Pinch استفاده شده است. 2- Combined pinch and Exergy Analysis (CPEA)

چکیده انگلیسی:

Background and Objective: The ability of Pinch Technology is related to design and analysis of processes; however, it can’t be used individually for heat and power system. In the other words, exergy analysis can apply for evaluation of heat and power systems. It can determine unavoidable parts of energy systems and specify the maximum potential of optimization. Method: The main limitation of exergy analysis is the lake of general and clear method for design of system. The combined pinch and exergy analysis that using the advantages of both methods satisfy the limitations. In this paper, the RAMIN Ahvaz thermal power plant as a case study is defined. Furthermore, using CPEA the potential of optimization has been determined and evaluated. Findings: Three proposed modification scenarios have been used for optimization of Power Plant as follows: 1. approaching pinch temperatures 2. Increasing steam in boiler and 3.Decreasing pressure of condenser. Discussion and Conclusion: With employing both methods the efficiency of power plant has been increased by 1.7%. In addition, the fuel consumption is about 1569 m3/h and flue gases have been reduced by 1.7% (20t/h). So, the emissions have been reduced by 1.7%. The Thermoflow (Steam Pro) software has been applied for simulation of case study. In addition, Aspen Pinch Software has been employed for CPEA.  

منابع و مأخذ:


  1. Dincer, I. and M.A. Rosen, EXERGY: Energy, Environment and Sustainable Development. 2007: Elsevier Science.
    2.
  2. X. Feng and X. X. Zho, Combining pinch and exergy analysis for process modifications, Applied Thermal Engineering,17(3), 249-261, 1997.
    3.
  3. Klemes, J., et al., Sustainability in the Process Industry: Integration and Optimization: Integration and Optimization. 2010: McGraw-Hill Education.
    4.
  4. V. R. Dhole and J.P. Zheng, applying combined and exergy analysis to closed cycle gas turbine system design, 117, 47-52, 1995.
    5.
  5. B. Linnhoff, V.R.  Dhole, ”Shaftwork targets for low temperature process design” Chemical Engineering Science Journal, 1991
    6.
  6. V. R. Dohle, J. P. Zheng, ”Applying combined pinch and exergy analysis to closed-cycle gas turbine system design”, Journal of Engineering for Gas Turbine and Power, Vol. 117, PP. 47-52, 1995
    7.
  7. J. P. Zheng, X. X. Zhu, V. R. Dhole and J. Rennie, Conceptual design of commercial power plants using the combined pinch and exegy approach. Accepted for presentation at the 5th  World Congress of Chemical Engineering, San Diego, California, July 1996.
    8.
  8. F. Staine, D. Favart, “Energy integration of  industrial processes based on the pinch analysis method extended to include exergy factors”, Applied Thermal Engineering, Vol. 16, PP. 497-507, 1996
    9.
  9. V Lavric, D. Baetens, V. Plesu, J. De Ruyck. Entropy generation reduction through chemical pinch analysis, Applied Thermal Engineering 23 (2003) 1837–1845.
    10.
  10. J. Manninen, X. X. Zhu,“ Thermodynamic analysis and mathematical optimization of power plant”, Computers and Chemical Engineering, Vol. 22, PP. S537-S544, 1998.
    11.
  11. J. Manninen, X. X.  Zhu, Optimal flowsheeting synthesis for power station design considering overall integration, Energy 24 (1999) 451–478
    12.
  12. M. Sorin, J. Paris, “ Integrated exergy load distribution method and pinch analysis”, Computer & Chemical Engineering Journal, 1999
    13.
  13. R. Anantharaman, O. Abbas, T. Gundersen,” Energy level composite curves- a new graphical methodology for the integration of energy intensive processes”, Applied Thermal Engineering Journal, ‏2006.
    14.
  14. A. Aspelund, D. Berstad, T. Gundersen,’’An Extended Pinch Analysis and Design procedure utilizing pressure based exergy for subambient cooling’’, Applied Thermal Engineering 27 (2007) 2633–2649.
    15.
  15. M. H.  Khoshgoftar Manesh, M. Amidpour, M. H. Hamedi, Analysis of pressurized water reactor with pinch, exergy and thermoeconomic method, Proceedings of the 16th International Conference on Nuclear Engineering ICONE16 ,May 11-15, (2008), Orlando, Florida, USA.
    16.
  16. T. Gundersen, D.O. Berstad and A. Aspelund. Extended pinch analysis and process integration into pressure and fluid phase consideration, Proceeding of 12th Conference of Process Integration, Modeling and Optimization for Energy saving and Pollution Reduction - PRES 2009, (2009)10-13 May Rome Italy.
    17.
  17. A. Ataei and C.K. Yoo, Combined pinch and exergy analysis for energy efficiency optimization in a steam power plant, International Journal of the Physical Sciences Vol. 5(7), pp. 1110-1123, July 2010
    18.
  18. Ghannadzadeh, A. and M. Sadeqzadeh, Combined pinch and exergy analysis of an ethylene oxide production process to boost energy efficiency toward environmental sustainability. Clean Technologies and Environmental Policy, 2017. 19(8): p. 2145-2160.
    19.
  19. Ghannadzadeh, A. and M. Sadeqzadeh, Exergy aided pinch analysis to enhance energy integration towards environmental sustainability in a chlorine-caustic soda production process. Applied Thermal Engineering, 2017. 125(Supplement C): p. 1518-1529.
    20.

 
 



 



 

 

 

_||_

  1. Dincer, I. and M.A. Rosen, EXERGY: Energy, Environment and Sustainable Development. 2007: Elsevier Science.
    2.
  2. X. Feng and X. X. Zho, Combining pinch and exergy analysis for process modifications, Applied Thermal Engineering,17(3), 249-261, 1997.
    3.
  3. Klemes, J., et al., Sustainability in the Process Industry: Integration and Optimization: Integration and Optimization. 2010: McGraw-Hill Education.
    4.
  4. V. R. Dhole and J.P. Zheng, applying combined and exergy analysis to closed cycle gas turbine system design, 117, 47-52, 1995.
    5.
  5. B. Linnhoff, V.R.  Dhole, ”Shaftwork targets for low temperature process design” Chemical Engineering Science Journal, 1991
    6.
  6. V. R. Dohle, J. P. Zheng, ”Applying combined pinch and exergy analysis to closed-cycle gas turbine system design”, Journal of Engineering for Gas Turbine and Power, Vol. 117, PP. 47-52, 1995
    7.
  7. J. P. Zheng, X. X. Zhu, V. R. Dhole and J. Rennie, Conceptual design of commercial power plants using the combined pinch and exegy approach. Accepted for presentation at the 5th  World Congress of Chemical Engineering, San Diego, California, July 1996.
    8.
  8. F. Staine, D. Favart, “Energy integration of  industrial processes based on the pinch analysis method extended to include exergy factors”, Applied Thermal Engineering, Vol. 16, PP. 497-507, 1996
    9.
  9. V Lavric, D. Baetens, V. Plesu, J. De Ruyck. Entropy generation reduction through chemical pinch analysis, Applied Thermal Engineering 23 (2003) 1837–1845.
    10.
  10. J. Manninen, X. X. Zhu,“ Thermodynamic analysis and mathematical optimization of power plant”, Computers and Chemical Engineering, Vol. 22, PP. S537-S544, 1998.
    11.
  11. J. Manninen, X. X.  Zhu, Optimal flowsheeting synthesis for power station design considering overall integration, Energy 24 (1999) 451–478
    12.
  12. M. Sorin, J. Paris, “ Integrated exergy load distribution method and pinch analysis”, Computer & Chemical Engineering Journal, 1999
    13.
  13. R. Anantharaman, O. Abbas, T. Gundersen,” Energy level composite curves- a new graphical methodology for the integration of energy intensive processes”, Applied Thermal Engineering Journal, ‏2006.
    14.
  14. A. Aspelund, D. Berstad, T. Gundersen,’’An Extended Pinch Analysis and Design procedure utilizing pressure based exergy for subambient cooling’’, Applied Thermal Engineering 27 (2007) 2633–2649.
    15.
  15. M. H.  Khoshgoftar Manesh, M. Amidpour, M. H. Hamedi, Analysis of pressurized water reactor with pinch, exergy and thermoeconomic method, Proceedings of the 16th International Conference on Nuclear Engineering ICONE16 ,May 11-15, (2008), Orlando, Florida, USA.
    16.
  16. T. Gundersen, D.O. Berstad and A. Aspelund. Extended pinch analysis and process integration into pressure and fluid phase consideration, Proceeding of 12th Conference of Process Integration, Modeling and Optimization for Energy saving and Pollution Reduction - PRES 2009, (2009)10-13 May Rome Italy.
    17.
  17. A. Ataei and C.K. Yoo, Combined pinch and exergy analysis for energy efficiency optimization in a steam power plant, International Journal of the Physical Sciences Vol. 5(7), pp. 1110-1123, July 2010
    18.
  18. Ghannadzadeh, A. and M. Sadeqzadeh, Combined pinch and exergy analysis of an ethylene oxide production process to boost energy efficiency toward environmental sustainability. Clean Technologies and Environmental Policy, 2017. 19(8): p. 2145-2160.
    19.
  19. Ghannadzadeh, A. and M. Sadeqzadeh, Exergy aided pinch analysis to enhance energy integration towards environmental sustainability in a chlorine-caustic soda production process. Applied Thermal Engineering, 2017. 125(Supplement C): p. 1518-1529.
    20.

 
 



 



 

 

 

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