Hydrocracking of used cooking oil is studied as a potential process for biofuels production. In this work
several parameters are considered for evaluating the effectiveness of this technology, including hydrocracking
temperature, liquid hourly space velocity (LHSV) and days on stream (DOS). Conversion and
total biofuels production is favored by increasing temperature and decreasing LHSV. However moderate
reaction temperatures and LHSVs are more attractive for diesel production, whereas higher temperatures
and smaller LHSVs are more suitable for gasoline production. Furthermore heteroatom (S, N and O)
removal increases as hydrocracking temperature increases, with de-oxygenation being particularly favorable.
Saturation, however, is not favored with temperature indicating the necessity of a pre-treatment
step prior to hydrocracking to enable saturation of the double bonds and heteroatom removal. Finally
the impact of extended operation (catalyst life) on product yields and qualities indicates that all reactions
are affected yet at different rates.
Hydrocracking of used cooking oil is studied as a potential process for biofuels production. In this workseveral parameters are considered for evaluating the effectiveness of this technology, including hydrocrackingtemperature, liquid hourly space velocity (LHSV) and days on stream (DOS). Conversion andtotal biofuels production is favored by increasing temperature and decreasing LHSV. However moderatereaction temperatures and LHSVs are more attractive for diesel production, whereas higher temperaturesand smaller LHSVs are more suitable for gasoline production. Furthermore heteroatom (S, N and O)removal increases as hydrocracking temperature increases, with de-oxygenation being particularly favorable.Saturation, however, is not favored with temperature indicating the necessity of a pre-treatmentstep prior to hydrocracking to enable saturation of the double bonds and heteroatom removal. Finallythe impact of extended operation (catalyst life) on product yields and qualities indicates that all reactionsare affected yet at different rates.
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