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A detailed experimental analysis of air–steam gasification in a dual fired downdraft biomass gasifier enabling hydrogen enrichment in the producer gas

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  • Ram, Narasimhan Kodanda
  • Singh, Nameirakpam Rajesh
  • Raman, Perumal
  • Kumar, Atul
  • Kaushal, Priyanka

Abstract

The use of ambient air as an oxidizing agent in the biomass gasification process is well understood. Ambient air contains 79% nitrogen (N2) and 21% Oxygen (O2) by volume. Consequently, producer gas generated through air gasification comprises of non-combustible gases around 62% (on a volume basis). As a result, the heating value of the producer gas is low, which results in low adiabatic flame temperature (AFT), low AFT results in reduced efficiency and higher specific fuel consumption (SFC) when the producer gas (PG) is used in internal combustion (IC) engines. This study is focused on the reduction of the non-combustible fraction in producer gas, thereby to increase the heating value of the producer gas through the air- steam gasification. The results of the experimental study are presented in details. A detailed mass and energy balance analysis conducted. A maximum of 27.24% (by volume) hydrogen achieved at equivalence number (EN) 1.54 suitable for bio-hydrogen production. Whereas EN 1.5–2.2 is more suitable for power generation applications since maximum higher heating value (HHV) occurs in this range, i.e., 6.33 MJ Nm−3. The enrichment of producer gas resulted in an increase of HHV by 44%. The cold gas efficiency is 86–87%.

Suggested Citation

  • Ram, Narasimhan Kodanda & Singh, Nameirakpam Rajesh & Raman, Perumal & Kumar, Atul & Kaushal, Priyanka, 2019. "A detailed experimental analysis of air–steam gasification in a dual fired downdraft biomass gasifier enabling hydrogen enrichment in the producer gas," Energy, Elsevier, vol. 187(C).
    • Handle: RePEc:eee:energy:v:187:y:2019:i:c:s0360544219316214
    DOI: 10.1016/j.energy.2019.115937
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    Cited by:

    1. Yan, Xianyao & Li, Yingjie & Ma, Xiaotong & Bian, Zhiguo & Zhao, Jianli & Wang, Zeyan, 2020. "CeO2-modified CaO/Ca12Al14O33 bi-functional material for CO2 capture and H2 production in sorption-enhanced steam gasification of biomass," Energy, Elsevier, vol. 192(C).
    2. Ram, Narasimhan Kodanda & Singh, Nameirakpam Rajesh & Raman, Perumal & Kumar, Atul & Kaushal, Priyanka, 2020. "Experimental study on performance analysis of an internal combustion engine operated on hydrogen-enriched producer gas from the air–steam gasification," Energy, Elsevier, vol. 205(C).
    3. Jun Sheng Teh & Yew Heng Teoh & Heoy Geok How & Mohamad Yusof Idroas & Thanh Danh Le & Huu Tho Nguyen, 2022. "Experimental Studies of Combustion and Emission Characteristics of Biomass Producer Gas (BPG) in a Constant Volume Combustion Chamber (CVCC) System," Energies, MDPI, vol. 15(21), pages 1-18, October.
    4. Long, A. & Bose, A. & O'Shea, R. & Monaghan, R. & Murphy, J.D., 2021. "Implications of European Union recast Renewable Energy Directive sustainability criteria for renewable heat and transport: Case study of willow biomethane in Ireland," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
    5. Kakati, Ujjiban & Sakhiya, Anil Kumar & Baghel, Paramjeet & Trada, Akshit & Mahapatra, Sadhan & Upadhyay, Darshit & Kaushal, Priyanka, 2022. "Sustainable utilization of bamboo through air-steam gasification in downdraft gasifier: Experimental and simulation approach," Energy, Elsevier, vol. 252(C).
    6. Upadhyay, Darshit S. & Panchal, Krunal R. & Sakhiya, Anil Kumar V & Patel, Rajesh N., 2020. "Air-Steam gasification of lignite in a fixed bed gasifier: Influence of steam to lignite ratio on performance of downdraft gasifier," Energy, Elsevier, vol. 211(C).

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