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The Characteristics of the After-Combustion in a Commercial CFBC Boiler Using the Solid Waste Fuel

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  • Jong-Seon Shin

    (Greenhouse Gas Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea
    Graduate School of Energy Science and Technology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea)

  • Dowon Shun

    (Greenhouse Gas Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea)

  • Churl-Hee Cho

    (Graduate School of Energy Science and Technology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea)

  • Yujin Choi

    (Greenhouse Gas Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea)

  • Dal-Hee Bae

    (Greenhouse Gas Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea)

Abstract

A CFBC (Circulating Fluidized Bed Combustor) boiler for combusted SRF (Solid Refused Fuel) is designed for solid waste combustion and power generation. The boiler consumes about 200 tons/day of SRF and generates 60 ton/h of steam or 10 MWe in electricity. The boiler is designed to burn pelletized waste fuel made of municipal solid waste collected from a town with a population of 400,000. Heat and mass balance calculations over the combustor and at each boiler section were performed and compared between the designed and measured data to analyze the boiler’s performance. After-combustion, the most significant phenomenon in low-density waste-derived fuel combustion in a CFBC boiler was monitored. The heat and mass balance were the most appropriate tools to analyze the boiler performance. The flow rate of spray water at the de-superheater was a reliable indicator to quantify the after-combustion. The design modification of the boiler unit for after-combustion control in the existing boiler was based on the quantification of spray water. The load distribution of the de-superheater decreases from 1.76% to 0.87% in 89% MCR before the installation of the evaporator and 82* % MCR load distribution of each boiler part after installation. The result was effective for the control of after-combustion in the existing boiler.

Suggested Citation

  • Jong-Seon Shin & Dowon Shun & Churl-Hee Cho & Yujin Choi & Dal-Hee Bae, 2022. "The Characteristics of the After-Combustion in a Commercial CFBC Boiler Using the Solid Waste Fuel," Energies, MDPI, vol. 15(15), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5507-:d:875437
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    References listed on IDEAS

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    1. Changkook Ryu & Donghoon Shin, 2012. "Combined Heat and Power from Municipal Solid Waste: Current Status and Issues in South Korea," Energies, MDPI, vol. 6(1), pages 1-13, December.
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    Cited by:

    1. Jeong-Seon Shin & Dowon Shun & Churl-Hee Cho & Dal-Hee Bae, 2023. "A Study on the Co-Combustion Characteristics of Coal and Bio-SRF in CFBC," Energies, MDPI, vol. 16(4), pages 1-13, February.

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