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    Experimental investigation on tar produced from palm shells derived syngas using zeolite HZSM-5 catalyst

    Access Status
    Fulltext not available
    Authors
    Chin, Bridgid
    Gorin, A.
    Chua, Han Bing
    Twaiq, F.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Chin, B. and Gorin, A. and Chua, H.B. and Twaiq, F. 2016. Experimental investigation on tar produced from palm shells derived syngas using zeolite HZSM-5 catalyst. Journal of the Energy Institute. 89 (4): pp. 713-724.
    Source Title
    Journal of the Energy Institute
    DOI
    10.1016/j.joei.2015.04.005
    ISSN
    1743-9671
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/41508
    Collection
    • Curtin Research Publications
    Abstract

    The efficiency of the gas cleaning step is one of the fundamental steps to the successful operation of biomass gasification technologies for power generation. In the present study, catalytic cracking is selected as the hot gas cleaning technology using zeolite HZSM-5 catalyst in order to reduce tar produced from palm shells gasification in the laboratory scale fixed bed reactor. The experimental conditions for average biomass particle size, nitrogen flow rate and percentage of zeolite HZSM-5 catalyst are in the range of 1.18–7.13 mm, 3–7 L/min, and 2–10 wt% respectively with constant air flow rate of 5 L/min to the inlet of the reactor. From the gas chromatographic analysis of the tar produced from the gasification process, it is found that the phenol in the tar is in the range of 5–8 vol% when the oxygen to nitrogen flow rate ratio is varied from 0.10 to 0.15. A decreasing trend in the phenol concentration is observed when oxygen to nitrogen ratio is increased. The overall oxygenated aromatic compounds in the tar content are comparable when operating with oxygen to nitrogen ratio of 0.12 and 0.15. The lowest concentration of phenol is achieved when 5 wt% of zeolite HZSM-5 catalyst is used with a reduction of 99% and 79% for oxygen to nitrogen ratio of 0.10 or 0.15 respectively when compared to the phenol concentration with the absence of the catalyst. Furthermore, higher percentage of the catalyst results in less chemical compounds found in tar. Tar content increased as lower concentration of oxygen content in gas mixture or larger palm shells particle size is used.

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