The production of renewable aviation fuel from waste cooking oil. Part II: Catalytic hydro-cracking/isomerization of hydro-processed alkanes into jet fuel range products

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作者
Chen, Yu-Kai [1 ]
Hsieh, Chung-Hung [2 ]
Wang, Wei-Cheng [1 ]
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[1] Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan,70101, Taiwan
[2] Department of Chemistry, Tamkung University, New Taipei City, Taiwan
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In this study; the surrogates of long chain paraffins produced from waste cooking oil through hydro-processing was hydro-cracked and hydro-isomerized for studying the process for producing renewable aviation fuel; through carrying out the experiments with varying reaction temperature; pressure; H2-to-alkane ratio and weight hourly space velocity (WHSV) over the home-made NiAg/SAPO(silicoaluminophosphate)-11catalyst. The data of conversion; selectivity; isomer yield and isomer-to-normal (I-to-N) alkane ratio were determined for evaluating the performance of the catalyst. The catalyst characterizations of the fresh and spent catalysts were examined through the technologies of Scanning Electron Microscopy (SEM); powder X-ray diffraction (XRD); thermo-gravimetric analysis (TGA) and fourier-transform infrared (FTIR) spectroscopy. It was found that the rearrangement of vapor-liquid equilibrium and increase in residence time by adjusting the operating conditions improved the performance of hydro-cracking/isomerization. In addition; based on the results of catalyst characterizations; the unreacted feed was dispersed onto the surface of the catalyst; expected to deactivate the catalyst. © 2020 Elsevier Ltd;
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页码:731 / 740
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