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Energy reduction schemes for multiple effect evaporator systems

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  • Khanam, Shabina
  • Mohanty, Bikash

Abstract

In the present work different energy reduction schemes (ERSs), used to reduce the consumption of steam for a multiple effect evaporator (MEE) system, are developed. These ERSs are condensate-, feed- and product-flashing and vapor bleeding. Further, a new scheme is proposed where condensate of vapor chest of an effect is used to preheat the liquor, which is entering into that effect using a counter current heat exchanger. This work also presents a comparative study between existing ERSs and selects the best ERS amongst these based on steam consumption as well as number of units involved. Further, in the present paper a simple graphical approach named "modified temperature path (MTP)" is developed for the analysis of different feed flow sequences of a MEE system to screen best possible feed flow sequence. To study the effect of different ERSs on steam consumption and MTP analysis an example of septuple effect flat falling film evaporator (SEFFFE) system, employed for concentrating weak black liquor in an Indian Kraft Paper Mill, is considered. The results show that ERSs reduce the steam consumption up to 24.6%.

Suggested Citation

  • Khanam, Shabina & Mohanty, Bikash, 2010. "Energy reduction schemes for multiple effect evaporator systems," Applied Energy, Elsevier, vol. 87(4), pages 1102-1111, April.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:4:p:1102-1111
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    References listed on IDEAS

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    1. Kaya, Durmus & Ibrahim Sarac, H., 2007. "Mathematical modeling of multiple-effect evaporators and energy economy," Energy, Elsevier, vol. 32(8), pages 1536-1542.
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    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. Goel, Anubhav & Manik, Gaurav & Verma, Om Prakash, 2023. "Integration of a parabolic trough solar collector with an energy-intensive multi-effect evaporator: A move towards industrial decarbonization," Energy, Elsevier, vol. 279(C).
    3. Bechara, Rami & Gomez, Adrien & Saint-Antonin, Valérie & Schweitzer, Jean-Marc & Maréchal, François & Ensinas, Adriano, 2018. "Review of design works for the conversion of sugarcane to first and second-generation ethanol and electricity," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 152-164.
    4. Om Prakash Verma & Toufiq Haji Mohammed & Shubham Mangal & Gaurav Manik, 2018. "Optimization of steam economy and consumption of heptad’s effect evaporator system in Kraft recovery process," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 9(1), pages 111-130, February.
    5. 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.
    6. Pati, Smitarani & Verma, Om Prakash, 2022. "Energy integration of solar assisted Multiple Stage Evaporator and optimum parameter selection," Energy, Elsevier, vol. 239(PC).
    7. Sharan, Prashant & Bandyopadhyay, Santanu, 2016. "Integration of thermo-vapor compressor with multiple-effect evaporator," Applied Energy, Elsevier, vol. 184(C), pages 560-573.
    8. Sharan, Prashant & Bandyopadhyay, Santanu, 2016. "Energy optimization in parallel/cross feed multiple-effect evaporator based desalination system," Energy, Elsevier, vol. 111(C), pages 756-767.
    9. Verma, Om Prakash & Mohammed, Toufiq Haji & Mangal, Shubham & Manik, Gaurav, 2017. "Minimization of energy consumption in multi-stage evaporator system of Kraft recovery process using Interior-Point Method," Energy, Elsevier, vol. 129(C), pages 148-157.

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