喷气燃料
航空生物燃料
环境科学
生物燃料
废物管理
航空
下降(电信)
食用油
催化作用
喷射(流体)
材料科学
化学
生物能源
航空航天工程
工程类
有机化学
生物柴油
机械工程
作者
Vikas Verma,Ankit Mishra,M. Anand,Saleem Akhtar Farooqui,Anil K. Sinha
出处
期刊:Fuel
[Elsevier]
日期:2023-02-01
卷期号:333: 126348-126348
被引量:5
标识
DOI:10.1016/j.fuel.2022.126348
摘要
• We suggest waste cooking oil (WCO) as a significant source for jet fuel production. • High selectivity (55.6%) towards jet range hydrocarbons at higher temperature. • 82.9% of isomer yield and 4.8 of i/n ratio obtained at optimal reaction condition. • Hydrocracking of WCO reduces heteroatoms meanwhile raises iso and cycloalkanes. • The catalyst shows high stability and lifetime up to 520 h. Waste cooking oil (WCO) is a bio-waste with significant potential for developing improved transportation fuel, specifically for the aviation industry. This work investigates the catalytic hydrocracking of WCO over commercial hydrocracking catalyst (Ni-Mo/silica-alumina) in a continuous flow fixed bed reactor to produce jet range hydrocarbons (HCs). The aim was to convert WCO into sustainable aviation and automotive fuel to get the maximum benefit from waste oil with high selectivity towards paraffins, naphthenes, minimal aromatics, and high isomerization (isomer to normal (i/n) ratio) in a single-step process using a single catalyst composition. The higher i/n ratio boosts specific energy, thermal stability and provides a low freezing point to the fuel. The results show that WCO conversion of 96.6 % with 55.6 % selectivity of jet range HCs was obtained at 420 °C temperature, 1 h −1 LHSV, 10 MPa pressure, and 2200 NL gas /L liquid H 2 /oil ratio. In addition, isomer yield of 82.9 %, i/n ratio of 4.8, and selectivity of kerosene range HCs based on paraffins (43.6 %), naphthenes (8.2 %), and aromatics (3.73 %) was obtained at optimum reaction conditions. After hydroprocessing, the major fraction of heteroatoms (N = 99.9 %, S = 94.3 %, O = 99.9 %) was removed from WCO. Finally, the time on stream (TOS) study showed no deactivation of the catalyst up to 590 h, indicating the long life and stability of the catalyst, which is one of the highest lifetimes reported so far. Bio-jet fuel properties were tested according to the ASTM D-1655 standard. This research will aid in developing novel catalysts for the selective conversion of WCO into jet range HCs in a single step process.
科研通智能强力驱动
Strongly Powered by AbleSci AI