AIMS Energy, 2018, 6(1): 203-215. doi: 10.3934/energy.2018.1.203.

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Bio-oil upgrading by cracking in two-stage heated reactors

1 Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
2 School of Environment and Society, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan

The objective of this research is to explore the possibility to upgrade gasified bio-oil in bench-scale fixed bed reactors with two heating units using the cracking method. The bio-oil is derived from Japanese cedars which are widely distributed in Japan. The catalyst is HZSM-5 zeolite, which is commonly used in bio-oil upgrading. The result showed that by using two heating units, even without catalyst, the upgrading was achieved as well. The catalytic cracking promoted the deoxygenation rate and further improved the quality of the upgraded oil compared with the non-catalytic cracking case. By separating two heating units with different operating condition, the catalytic effect and the deactivation of the catalyst was clarified. The raw bio-oil and the upgraded oil were characterized by measuring their element content, water content and the chemical composition of its organic fraction.
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Keywords cracking; bio-oil upgrading; zeolite catalyst; fixed bed; two-stage reactors

Citation: Lihao Chen, Kunio Yoshikawa. Bio-oil upgrading by cracking in two-stage heated reactors. AIMS Energy, 2018, 6(1): 203-215. doi: 10.3934/energy.2018.1.203

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