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Downdraft gasification of raw and torrefied palm kernel shell

Samiran, Nor Afzanizam, Jaafar, Mohammad Nazri Mohd, Chong, Cheng Tung, Valera Medina, Agustin ORCID: and Ng, Jo-Han 2018. Downdraft gasification of raw and torrefied palm kernel shell. Presented at: 3rd International Conference On Power Generation Systems And Renewable Energy Technologies (PGSRET), Johor Bahru, Malaysia, 4-6 April 2017. Proceedings of the 2017 3rd International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET). IEEE, 10.1109/PGSRET.2017.8251798

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Downdraft gasification is a potential method to produce biomass-based power suited for small-scaled power generation application. In the present study, a downdraft gasifier is used to gasify both raw and torrefied palm kernel shell (PKS). The properties of the palm kernel shells were characterised prior to gasification. Torrefaction of PKS was performed at the maximum temperature of 400 o C. Torrefied PKS shows lower moisture content by 4.8% as compared to raw kernel shell. Gasification of the feedstock showed that torrefied PKS produced higher amount of reactive syngas components, notably 16.4% CO and 9.25% H2 (by volume) than its raw counterpart. The total lower heating value of the syngas produced by torrefied PKS is 7.2 MJ/kg higher than that of raw PKS. Comparison of the temperature profiles within the gasifier for torrefied and raw PKS show distinct differences, with the temperature of the oxidation zone for raw and torrefied PKS being 1115 o C and 1138 o C at the equivalence ratio of 0.41 and 0.30, respectively. Although both feedstock show high potential for synthesis gas production, torrefied PKS produces syngas of higher LHV.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: IEEE
ISBN: 978-1-5090-5354-4
Last Modified: 25 Oct 2022 13:48

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