International Journal of Energy Engineering          
International Journal of Energy Engineering(IJEE)
Frequency: Yearly
Editor-in-Chief: Prof. Sri Bandyopadhyay(Australia)
Boiler Flue Gases as Secondary Source in Polyester Production
Full Paper(PDF, 147KB)
Energy efficiency improvement in polyester production by applying boiler flue gases heat recovery was investigated. This study presented increasing process efficiency and at the same time the thermal pollution reduced. The implementation of the economizer for feed water preheating with heat contained in the exhaust flue gases reduced natural gas consumption by 9.2 % and also flue gases exhaust temperature diminished from 204 0C to 51.8 0C. When an air preheater using for combustion air preheating was applied, the natural gas savings became 7%. Simultaneously, the air pollution was also lowered and the outlet flue gases temperature diminished from 204 0C to 64.40C. The utilization of the economizer and the air preheater resulted in a maximum fuel saving of 10.15% and a minimum thermal pollution with flue gases exhaust temperature of 31.150C.
Keywords:Polyester; Flue gases heat recovery, Natural gas savings; Environmental protection
Author: A. Mihelic-Bogdanic1, R. Budin2
1.University of Zagreb, Faculty of Textile Technology, Department of fundamental natural and technical sciences, 10000 Zagreb, Savska 16, Croatia
2.University of Zagreb, Faculty of Chemical Engineering and Technology, Department of thermodynamics, mechanical engineering and energetics, 10000 Zagreb, Savska 16, Croatia
  1. Rodriguez F, Cohen C, Ober C, Archer L, Archer A. Principles of polymer systems. 5th ed. USA: CRC Press; 2003.
  2. Budin R, Mihelić-Bogdanić A. Energy effective polyester production. Chapter 9 in DAAAM International Scientific Book. Katalinić B. ed. Vienna: DAAAM International; 2006.
  3. Stevens M P. Polymer chemistry. Oxford: University Press; 1999.
  4. Edlund U, Albertsson AC. Polyesters based on diacid monomers. Advanced Drug Delivery Reviews.2003;55(6): 585-609.
  5. Budin R, Mihelić-Bogdanić A, Vujasinović E. Cogeneration and heat recovery in the industrial process. Kem. Ind.2007:56(11):551-555.
  6. Paszun D, Spychaj T. Chemical Recycling of Poly(ethylene terephthalate). Industrial and Engineering Chemistry Research 1997:36(4):1373-1383.
  7. Budin R, Mihelić-Bogdanić A, Sutlovic I, Filipan V. Advanced polymerization process with cogeneration and heat recovery. Appl. Thermal Eng. 2006:26(16): 998-2004.
  8. Mihelić-Bogdanić A, Budin R.Heat recovery in thermoplastic production. Energy Convers Mgmt 2002;43(8):1079-1089.
  9. Production plant data – private communication, 2011.
  10. Eastop TD, McConkey A. Applied thermodynamics for engineering technologists.5th ed. New York: Longman Scientific and Technical, Wiley; 1994.
  11. Požar H. Fundamentals of energetics.Zagreb:Školska knjiga; 1992 [in Croatian].
  12. Budin R, Mihelić-Bogdanić A. Fundamentals of technical thermodynamics. 3rd ed.Zagreb: Školska knjiga; 2012 [in Croatian].
  13. Eastop TD, Croft DR. Energy efficiency. Essex; Longman group; 1995.
  14. Budin R, Mihelić-Bogdanić A. Sources and industrial energy management. Zagreb: Element; 2013 [in Croatian].
  15. Bošnjaković F. Technische Thermodynamik. Dresden: Verlag T Steinkopff; 1982.
  16. Stijepovic M, Linke P. Optimal waste heat recovery and reuse in industrial zones. Energy 2011;36(8) :4019-4031.
  17. Song HC, Sang HK, Sang GY, Sunwon P. Optimization of a waste heat utilization network in an eco-industrial park. Applied Energy 2010; 87 (6):1978-1988.
  18. Műnster M, Meivorn P. Optimization of use of waste in the future energy system. Energy 2011; 36 (3):1612-1622.
  19. Pavlas M, Touš M, Bébar L. Energy efficient processing of waste. Chem Eng Trans 2010;21(2): 841-846.