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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1941
Title: Catalytic cracking of jatropha-derived fast pyrolysis oils with VGO and their NMR characterization
Authors: Naik D.V.
Kumar, Vimal
Prasad, Basheshwar Rajendra
Poddar M.K.
Behera B.
Bal R.
Khatri O.P.
Adhikari D.K.
Garg M.O.
Published in: RSC Advances
Abstract: Lignocellulosic biomass-derived fast pyrolysis oils are potential second-generation bio-fuels towards the reduction of greenhouse gas (GHG) emissions and carbon foot prints. This study pertains to co-process the Jatropha-derived heavy or tar fraction of fast pyrolysis oil (FPO) with vacuum gas oil (VGO) and hydrodeoxygenated fast pyrolysis oil (HDO) with VGO in a standard refinery fluid catalytic cracking (FCC) unit. The crude fast pyrolysis oil from Jatropha curcas is produced at 530 °C and atmospheric pressure using a bubbling fluidized bed pyrolyzer. The heavy fraction of FPO is hydrodeoxygenated over Pd/Al2O3 catalyst into HDO in an autoclave reactor at 300 °C and pressure of 80 bar. Further, HDO is co-processed with petroleum-derived VGO in an advanced cracking evaluation (ACE-R) unit to convert it into refinery FCC product slate hydrocarbons at a blending ratio of 5 : 95. FPO and HDO are characterized using 31P NMR, whereas FCC distillates, which are obtained on the co-processing of VGO with fast pyrolysis oil and HDO, are characterized using 1H and 13C NMR spectroscopy techniques. The 31P NMR analysis of crude FPO and HDO indicated that hydroxyl, carboxylic and methoxy groups are reduced during the hydrodeoxygenation of FPO. The experimental results at the iso-conversion level on the co-processing of HDO with VGO indicated a higher yield of liquefied petroleum gases (LPG), while lower yields of gasoline and LCO have been observed as compared to FPO co-processing with VGO and co-processing of pure VGO. Furthermore, the results of co-processing of FPO with VGO indicated that the yields of gasoline and LCO increased from 29 to 35 wt% and 14.8 to 20.4 wt%, respectively, whereas the yields of dry gas and LPG decreased from 2.1 to 1.4 wt% and 38.8 to 23.7 wt%, respectively, for an increase in the blending ratio from 5% to 20%. Therefore, it can be concluded that the co-processing of HDO with VGO in a FCC unit would be feasible in order to achieve a higher yield of LPG. This journal is © The Royal Society of Chemistry 2015.
Citation: RSC Advances (2015), 5(1): 398-409
URI: https://doi.org/10.1039/c4ra08128e
http://repository.iitr.ac.in/handle/123456789/1941
Issue Date: 2015
Publisher: Royal Society of Chemistry
ISSN: 20462069
Author Scopus IDs: 9243117400
7404634425
15838004000
56196832400
14059684600
7004686096
9636281300
6701776993
8694017700
Author Affiliations: Naik, D.V., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Kumar, V., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Poddar, M.K., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Behera, B., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Bal, R., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Khatri, O.P., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Adhikari, D.K., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Garg, M.O., Bio-fuels Division, CSIR, Indian Institute of Petroleum, Dehradun, 248005, India
Corresponding Author: Kumar, V.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia
Appears in Collections:Journal Publications [CH]

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