Co-processing bio-liquids with vacuum gasoil through hydrocracking
Hydrocracking converts heavy feeds mainly into middle distillate products. Co-processing these bio-feeds with vacuum gas oil is a possible production route for biofuels. Stabilized bio-liquid from fast pyrolysis and hydrothermal liquefaction bio-crude were mixed with vacuum gas oil (10–20 wt%) and h...
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Published in | Applied catalysis. B, Environmental Vol. 304; p. 120911 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.05.2022
Elsevier BV Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Hydrocracking converts heavy feeds mainly into middle distillate products. Co-processing these bio-feeds with vacuum gas oil is a possible production route for biofuels. Stabilized bio-liquid from fast pyrolysis and hydrothermal liquefaction bio-crude were mixed with vacuum gas oil (10–20 wt%) and hydrocracked over a bifunctional catalyst. The impact of the bio-liquids on conversion and middle distillate selectivity were investigated. The liquid products were analyzed by several methods such as 2-dimensional gas chromatography coupled with simulated distillation to obtain quantitative distribution of monoaromatics, polyaromatics and saturated hydrocarbons. A quantification study of different types of carbons was performed by 13C NMR and showed the evolution of products. The nature of bio-liquid impacts slightly on the conversion and gas production but not on the selectivity of middle distillates and naphtha. This is explained by a decoupled hydrodeoxygenation and hydrocracking process. This also resulted in a high hydrodesulfurization conversion.
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•VGO and VGO/bio-liquid hydrocracking experiments were carried out in a semi-batch reactor.•The impact of stabilized and deoxygenated pyrolysis oil as well as HTL biocrude were investigated.•Hydrodesulfurization is not impacted by the presence of bio-liquids.•Hydrodeoxygenation precedes hydrocracking.•Middle distillates or naphtha selectivity and composition are not impacted by co-processing. |
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ISSN: | 0926-3373 1873-3883 |
DOI: | 10.1016/j.apcatb.2021.120911 |