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Energy efficient upgrading of biofuel integrated with a pulp mill

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  • Andersson, Eva
  • Harvey, Simon
  • Berntsson, Thore

Abstract

This paper presents and evaluates different energy efficient options for integrating drying and pelletising of biofuel with a modern energy efficient pulp mill process. When drying biofuel, a large amount of the heat input can often be recovered. One option for heat recovery is to cover low-temperature heat demand in the pulping process. Alternatively available excess heat from the pulp mill can be used for drying. Both alternatives will contribute to a better energy efficiency for the combined pulp mill and biofuel upgrading facility. Pinch analysis tools can be used to estimate the excess heat potential at different temperature levels in the pulp mill. Three different technologies for pulp mill integrated biofuel drying were chosen for the study, namely steam drying, flue gas drying and vacuum drying. The different technologies are evaluated on the basis of energy usage, global CO2 emissions and resulting pellets production cost, using stand-alone pellets production as a reference. The pulp mill assumed for the calculations is the Eco-Cyclic reference pulp mill. The results of the study indicate that the most attractive integrated drying technology option is the flue gas dryer, using flue gases from the black liquor boiler. With the available flue gas stream at the reference pulp mill, a potential pellets production of 70,000ton/yr could be achieved at a cost of 24.6 €/ton. The associated reduction in CO2 emissions compared to stand-alone pellets production is 31–36kg/MWhpellets.

Suggested Citation

  • Andersson, Eva & Harvey, Simon & Berntsson, Thore, 2006. "Energy efficient upgrading of biofuel integrated with a pulp mill," Energy, Elsevier, vol. 31(10), pages 1384-1394.
  • Handle: RePEc:eee:energy:v:31:y:2006:i:10:p:1384-1394
    DOI: 10.1016/j.energy.2005.05.020
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    Citations

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    Cited by:

    1. Somchart Chantasiriwan, 2023. "Reduction in Fuel Consumption in Biomass-Fired Power Plant Using Hybrid Drying System," Energies, MDPI, vol. 16(17), pages 1-14, August.
    2. Sena, Kenton & Ochuodho, Thomas O. & Agyeman, Domena A. & Contreras, Marco & Niman, Chad & Eaton, Dan & Yang, Jian, 2022. "Wood bioenergy for rural energy resilience: Suitable site selection and potential economic impacts in Appalachian Kentucky," Forest Policy and Economics, Elsevier, vol. 145(C).
    3. Khouya, Ahmed, 2021. "Modelling and analysis of a hybrid solar dryer for woody biomass," Energy, Elsevier, vol. 216(C).
    4. Marcelo Hamaguchi & Marcelo Cardoso & Esa Vakkilainen, 2012. "Alternative Technologies for Biofuels Production in Kraft Pulp Mills—Potential and Prospects," Energies, MDPI, vol. 5(7), pages 1-22, July.
    5. Holmgren, Kristina M. & Berntsson, Thore & Andersson, Eva & Rydberg, Tomas, 2012. "System aspects of biomass gasification with methanol synthesis – Process concepts and energy analysis," Energy, Elsevier, vol. 45(1), pages 817-828.
    6. Liu, Ming & Wu, Dongyin & Xiao, Feng & Yan, JunJie, 2015. "A novel lignite-fired power plant integrated with a vacuum dryer: System design and thermodynamic analysis," Energy, Elsevier, vol. 82(C), pages 968-975.
    7. Joelsson, Jonas & Gustavsson, Leif, 2012. "Swedish biomass strategies to reduce CO2 emission and oil use in an EU context," Energy, Elsevier, vol. 43(1), pages 448-468.
    8. Yin, Yongjun & Liu, Jiang & Yang, Jingjing & Wang, Yang & Jia, Yanlong & Song, Xueping & Wu, Min & Man, Yi, 2023. "Energetic-environmental-economic assessment of utilizing weak black liquor to produce syngas for replacing evaporation based on coal water slurry gasification," Energy, Elsevier, vol. 283(C).
    9. Wafiq, A. & Hanafy, M., 2015. "Feasibility assessment of diesel fuel production in Egypt using coal and biomass: Integrated novel methodology," Energy, Elsevier, vol. 85(C), pages 522-533.
    10. Pettersson, Karin & Harvey, Simon, 2012. "Comparison of black liquor gasification with other pulping biorefinery concepts – Systems analysis of economic performance and CO2 emissions," Energy, Elsevier, vol. 37(1), pages 136-153.
    11. Kung, Kevin S. & Ghoniem, Ahmed F., 2019. "Multi-scale analysis of drying thermally thick biomass for bioenergy applications," Energy, Elsevier, vol. 187(C).
    12. Schmidt, Johannes & Leduc, Sylvain & Dotzauer, Erik & Kindermann, Georg & Schmid, Erwin, 2010. "Cost-effective CO2 emission reduction through heat, power and biofuel production from woody biomass: A spatially explicit comparison of conversion technologies," Applied Energy, Elsevier, vol. 87(7), pages 2128-2141, July.
    13. Johansson, Daniella & Franck, Per-Åke & Berntsson, Thore, 2012. "Hydrogen production from biomass gasification in the oil refining industry – A system analysis," Energy, Elsevier, vol. 38(1), pages 212-227.
    14. Joelsson, Jonas M. & Gustavsson, Leif, 2012. "Reductions in greenhouse gas emissions and oil use by DME (di-methyl ether) and FT (Fischer-Tropsch) diesel production in chemical pulp mills," Energy, Elsevier, vol. 39(1), pages 363-374.
    15. Gebreegziabher, Tesfaldet & Oyedun, Adetoyese Olajire & Hui, Chi Wai, 2013. "Optimum biomass drying for combustion – A modeling approach," Energy, Elsevier, vol. 53(C), pages 67-73.

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