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Chemical process simulation for minimizing energy consumption in pulp mills

Author

Listed:
  • Cardoso, Marcelo
  • de Oliveira, Kátia Dionísio
  • Costa, George Alberto Avelar
  • Passos, Maria Laura

Abstract

Chemical process simulation has proven to be an effective tool for performing a systematic and global analysis of energy systems to identify routes for maximizing the process efficiency concerning to the heat recovery. This paper shows an application of computer simulations in a Brazilian pulp mill, using two strategies for minimizing the mill energy consumption. In the first one, the overall heat transfer coefficient has been predicted for each body of the multiple effect evaporators by using continuous on-line data from the industrial plant in the black liquor recover unit. By monitoring oscillations of this heat transfer coefficient, the suitable time for washing the evaporator heat transfer surfaces can be well determined, reducing the energy loss during black liquor evaporation. In the second strategy, the liquor combustion has been simulated as function of the black liquor solids concentration to analyze its effect on the recovery boiler efficiency improvement.

Suggested Citation

  • Cardoso, Marcelo & de Oliveira, Kátia Dionísio & Costa, George Alberto Avelar & Passos, Maria Laura, 2009. "Chemical process simulation for minimizing energy consumption in pulp mills," Applied Energy, Elsevier, vol. 86(1), pages 45-51, January.
  • Handle: RePEc:eee:appene:v:86:y:2009:i:1:p:45-51
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    Citations

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    Cited by:

    1. Verma, Om Prakash & Manik, Gaurav & Sethi, Sushant Kumar, 2019. "A comprehensive review of renewable energy source on energy optimization of black liquor in MSE using steady and dynamic state modeling, simulation and control," Renewable and Sustainable Energy Reviews, Elsevier, vol. 100(C), pages 90-109.
    2. Mesfun, Sennai & Toffolo, Andrea, 2013. "Optimization of process integration in a Kraft pulp and paper mill – Evaporation train and CHP system," Applied Energy, Elsevier, vol. 107(C), pages 98-110.
    3. Lou, Rui & Wu, Shu-bin, 2011. "Products properties from fast pyrolysis of enzymatic/mild acidolysis lignin," Applied Energy, Elsevier, vol. 88(1), pages 316-322, January.
    4. 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.
    5. Guo, Da-liang & Wu, Shu-bin & Liu, Bei & Yin, Xiu-li & Yang, Qing, 2012. "Catalytic effects of NaOH and Na2CO3 additives on alkali lignin pyrolysis and gasification," Applied Energy, Elsevier, vol. 95(C), pages 22-30.

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