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Single particle combustion studies of coal/biomass fuel mixtures

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  • Das, Samar
  • Sarkar, Pranay Kumar
  • Mahapatra, Sadhan

Abstract

Single particle combustion behaviours of coal-biomass fuel mixtures are studied. Different biomass i.e. sawdust, wood and rice husk is blended with locally available low grade coal to carry out the experimental investigation. The combustion of solid fuel consists of flaming combustion and char combustion. Rice husk showed higher flaming time and char glowing time because of higher ash and particle density. The burning time of coal-rice husk mixture fuel sample is higher compared to other samples due to the combine effect of particle density and ash content of the fuel samples. Ignition mass flux of saw dust is higher compared to rice husk and wood fuel particles because of the presence of higher volatiles in sawdust. The diameter index for flaming combustion, char combustion are 1.13 to 0.47 and 0.63 to 1.23 respectively for 0%–40% coal in coal/wood fuel mixtures. It is observed that with the increases in surface area/volume ratio, flaming and char combustion decreases due to reduction in effective surface area of the particle for combustion. This study concludes that particle size or surface area/volume together with particle density are the primary controlling parameter for better conversion of fuel mixtures in any co-combustion system.

Suggested Citation

  • Das, Samar & Sarkar, Pranay Kumar & Mahapatra, Sadhan, 2021. "Single particle combustion studies of coal/biomass fuel mixtures," Energy, Elsevier, vol. 217(C).
    • Handle: RePEc:eee:energy:v:217:y:2021:i:c:s0360544220324361
    DOI: 10.1016/j.energy.2020.119329
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    References listed on IDEAS

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    1. Patel, Vimal R. & Upadhyay, Darshit S. & Patel, Rajesh N., 2014. "Gasification of lignite in a fixed bed reactor: Influence of particle size on performance of downdraft gasifier," Energy, Elsevier, vol. 78(C), pages 323-332.
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    Cited by:

    1. Hariana, & Putra, Hanafi Prida & Prabowo, & Hilmawan, Edi & Darmawan, Arif & Mochida, Keiichi & Aziz, Muhammad, 2023. "Theoretical and experimental investigation of ash-related problems during coal co-firing with different types of biomass in a pulverized coal-fired boiler," Energy, Elsevier, vol. 269(C).
    2. Dong, Leilei & Alexiadis, Alessio, 2023. "Simulation of char burnout characteristics of biomass/coal blend with a simplified single particle reaction model," Energy, Elsevier, vol. 264(C).
    3. Wu, Ruochen & Beutler, Jacob & Baxter, Larry L., 2023. "Biomass char gasification kinetic rates compared to data, including ash effects," Energy, Elsevier, vol. 266(C).

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