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Influence of seasonal variations on energy-saving opportunities in a pulp mill

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  • Persson, Jörgen
  • Berntsson, Thore

Abstract

Significant energy savings can be achieved in the pulp and paper industry through process integration. The aim of this paper was to investigate how much seasonal variations in the process influence the potential for making energy savings. The hot and warm water system in a market pulp mill has been evaluated from an energy point of view, using pinch analysis. Considerable energy-saving potential was found, 40.7MW, of which 16.5MW was in the form of steam savings. The steam savings represent 7% of the total steam consumption at the mill. New heat exchanger networks were redesigned using different approaches. The influence of seasonal variations was estimated from the calculated energy savings when monthly averages were used in the new heat exchanger networks. When seasonal variations were taken into account, the energy-saving opportunities fell by 2.5–5.0MW, depending on heat exchanger network design, compared with a steady-state scenario. Consequently, 88–94% of the theoretical energy savings could be realised. An economic evaluation indicates positive earnings from investment in a new heat exchanger network when seasonal variations were taken into account, even with low prices for the extracted steam and excess heat (5€/MWh) and with an annuity factor of 0.2.

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  • Persson, Jörgen & Berntsson, Thore, 2009. "Influence of seasonal variations on energy-saving opportunities in a pulp mill," Energy, Elsevier, vol. 34(10), pages 1705-1714.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:10:p:1705-1714
    DOI: 10.1016/j.energy.2009.07.023
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    1. Tveit, Tor-Martin & Aaltola, Juha & Laukkanen, Timo & Laihanen, Mika & Fogelholm, Carl-Johan, 2006. "A framework for local and regional energy system integration between industry and municipalities—Case study UPM-Kymmene Kaukas," Energy, Elsevier, vol. 31(12), pages 2162-2175.
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    Cited by:

    1. Christian Langner & Elin Svensson & Simon Harvey, 2020. "A Framework for Flexible and Cost-Efficient Retrofit Measures of Heat Exchanger Networks," Energies, MDPI, vol. 13(6), pages 1-24, March.
    2. Dhayaneswaran, Y. & Ashok Kumar, L., 2014. "A study on current characteristics of induction motor while operating at its base frequency in textile industry," Energy, Elsevier, vol. 74(C), pages 340-345.
    3. Hong, Gui-Bing & Ma, Chih-Ming & Chen, Hua-Wei & Chuang, Kai-Jen & Chang, Chang-Tang & Su, Te-Li, 2011. "Energy flow analysis in pulp and paper industry," Energy, Elsevier, vol. 36(5), pages 3063-3068.
    4. Liew, Peng Yen & Theo, Wai Lip & Wan Alwi, Sharifah Rafidah & Lim, Jeng Shiun & Abdul Manan, Zainuddin & Klemeš, Jiří Jaromír & Varbanov, Petar Sabev, 2017. "Total Site Heat Integration planning and design for industrial, urban and renewable systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P2), pages 964-985.
    5. Hatamipour, M.S. & Fakhr Hoseini, S.M. & Tavakkoli, T. & Mehrkesh, A.H., 2010. "An energy-saving opportunity in producing lubricating oil using mixed-solventin simulated Rotary Disc Contacting (RDC) extraction tower," Energy, Elsevier, vol. 35(5), pages 2130-2133.
    6. Ji, Xiaoyan & Lundgren, Joakim & Wang, Chuan & Dahl, Jan & Grip, Carl-Erik, 2012. "Simulation and energy optimization of a pulp and paper mill – Evaporation plant and digester," Applied Energy, Elsevier, vol. 97(C), pages 30-37.
    7. Mei-Ling, Zheng & Wen, Wang, 2010. "Seasonal energy utilization optimization in an enterprise," Energy, Elsevier, vol. 35(9), pages 3932-3940.
    8. Palamutcu, S., 2010. "Electric energy consumption in the cotton textile processing stages," Energy, Elsevier, vol. 35(7), pages 2945-2952.
    9. Utlu, Zafer & Kincay, Olcay, 2013. "An assessment of a pulp and paper mill through energy and exergy analyses," Energy, Elsevier, vol. 57(C), pages 565-573.
    10. Tahouni, Nassim & Gholami, Majid & Panjeshahi, M. Hassan, 2016. "Integration of flare gas with fuel gas network in refineries," Energy, Elsevier, vol. 111(C), pages 82-91.
    11. Xiaoxia Zou & Yu-e Li & Qingzhu Gao & Yunfan Wan, 2012. "How water saving irrigation contributes to climate change resilience—a case study of practices in China," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 17(2), pages 111-132, February.
    12. Lin, Hsin-Chiu & Chan, David Yih-Liang & Lin, Wei-Chun & Hsu, Chung-Hsuan & Hong, Gui-Bing, 2014. "Status of energy conservation in Taiwan's pulp and paper industry," Energy, Elsevier, vol. 73(C), pages 680-685.
    13. Liew, Peng Yen & Wan Alwi, Sharifah Rafidah & Ho, Wai Shin & Abdul Manan, Zainuddin & Varbanov, Petar Sabev & Klemeš, Jiří Jaromír, 2018. "Multi-period energy targeting for Total Site and Locally Integrated Energy Sectors with cascade Pinch Analysis," Energy, Elsevier, vol. 155(C), pages 370-380.
    14. Svensson, Elin & Berntsson, Thore, 2011. "Planning future investments in emerging energy technologies for pulp mills considering different scenarios for their investment cost development," Energy, Elsevier, vol. 36(11), pages 6508-6519.
    15. Jou, Chih-Ju G. & Wu, Chung-Rung & Lee, Chien-Li, 2010. "Reduction of energy cost and CO2 emission for the furnace using energy recovered from waste tail-gas," Energy, Elsevier, vol. 35(3), pages 1232-1236.

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