eprintid: 13347 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/33/47 datestamp: 2023-11-10 03:27:54 lastmod: 2023-11-10 03:27:54 status_changed: 2023-11-10 01:50:56 type: conference_item metadata_visibility: show creators_name: Premchand, creators_name: Komiyama, M. creators_name: Aqsha, A. creators_name: Uemura, Y. title: Effect of combustion and nitrogen gas atmospheres on the torrefaction performance of oil palm frond leaves and stems ispublished: pub note: cited By 3; Conference of Energy Security and Chemical Engineering Congress 2019, ESChE 2019 ; Conference Date: 17 July 2019 Through 19 July 2019; Conference Code:158114 abstract: Torréfaction is a well-known method to thermally treats biomass at lower temperature range (200 to 300 °C) under inert atmosphere. However, the continuous supply of pure inert gas on large scale resist the commercialisation of this process. To investigate the effect of combustion gas (flue gas) on torrefaction performance of oil palm fronds leaves (OPFL) and stems (OPFS), both samples were torrefied at 200 °C for 30 min in a vertical tubular reactor under the atmosphere of combustion gas produced from wood pellets and nitrogen (inert) gas. The major components of combustion gas were nitrogen and carbon dioxide (total 76 vol to 83 vol) and the rest of the mixture contained oxygen, carbon monoxide and hydrogen. The effects of combustion gas atmosphere on the torrefaction performance of OPFL and OPFS including solid yield, calorific value, energy yield, proximate and ultimate compositions were investigated and compared with those of nitrogen atmosphere torrefaction. The combustion gas torrefaction resulted in lower solid yield and energy yield but with higher energy density (calorific value, carbon content) as compared to nitrogen torrefaction. Under combustion gas atmosphere, torrefaction of OPF stems gave higher solid yield (84.66 wt) than OPF leaves (80.85 wt) while solid yield of both samples under nitrogen atmosphere was almost same (88.02 wt and 88.54 wt). The increase in solid conversion under combustion atmosphere was caused by the partial oxidation took place in the presence of oxygen. Non-condensable gases at the outlet of the torrefaction reactor contained carbon dioxide and carbon monoxide. © Published under licence by IOP Publishing Ltd. date: 2020 publisher: Institute of Physics Publishing official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85081405047&doi=10.1088%2f1757-899X%2f736%2f2%2f022020&partnerID=40&md5=274c51f383214e7049fd93c9accd99e9 id_number: 10.1088/1757-899X/736/2/022020 full_text_status: none publication: IOP Conference Series: Materials Science and Engineering volume: 736 number: 2 refereed: TRUE issn: 17578981 citation: Premchand and Komiyama, M. and Aqsha, A. and Uemura, Y. (2020) Effect of combustion and nitrogen gas atmospheres on the torrefaction performance of oil palm frond leaves and stems. In: UNSPECIFIED.