Catalytic cracking of jatropha-derived fast pyrolysis oils with VGO and their NMR characterization

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 398-409 ◽  
Author(s):  
Desavath V. Naik ◽  
Vimal Kumar ◽  
Basheshwar Prasad ◽  
Mukesh K. Poddar ◽  
Babita Behera ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Pyrolysis Oil ◽  
Nmr Characterization ◽  
Pyrolysis Oils

The FCC product distribution on catalytic cracking of jatropha-derived fast pyrolysis oil (FPO) with VGO, hydrodeoxygenated oil (HDO) with VGO, and pure VGO is compared. The oxy-components in FPO and HDO are analyzed using 1H, 13C, and 31P NMR.

scholarly journals Quantitative 13C NMR characterization of fast pyrolysis oils

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102665-102670 ◽  
Author(s):  
R. M. Happs ◽  
K. Iisa ◽  
J. R. Ferrell III
Keyword(s):  
13C Nmr ◽  
Fast Pyrolysis ◽  
Nmr Characterization ◽  
Pyrolysis Oils ◽  
Dept Spectra

DEPT spectra illustrate the overlap of aromatic C–H signals in the aromatic C–C region for catalytic and hydrotreated pyrolysis oils.

scholarly journals Correlating the Process Variables and Products Involved in the Fluid Catalytic Cracking of Waste Feeds

2018 ◽  
Author(s):  
José Ignacio Alvira ◽  
Idoia Hita ◽  
Elena Rodriguez ◽  
Jose M Arandes ◽  
Pedro Castaño
Keyword(s):  
Catalytic Cracking ◽  
Principal Component ◽  
Product Distribution ◽  
Vacuum Gasoil ◽  
Fluid Catalytic Cracking ◽  
Pyrolysis Oil ◽  
Scrap Tire ◽  
Feed Composition ◽  
Operational Conditions ◽  
Main Components

Associating the most influential parameters with the product distribution is of uttermost importance in complex catalytic processes such as fluid catalytic cracking (FCC). These correlations can lead to the information-driven catalyst screening, kinetic modeling and reactor design. In this work, a dataset of 104 uncorrelated experiments, with 64 variables, has been obtained in an FCC simulator using 6 types of feedstock (vacuum gasoil, polyethylene pyrolysis waxes, scrap tire pyrolysis oil, dissolved polyethylene and blends of the previous), 36 possible sets of conditions (varying contact time, temperature and catalyst/oil ratio) and 3 industrial catalysts. Principal component analysis (PCA) has been applied over the dataset, showing that the main components are associated with feed composition (27.41% variance); operational conditions (19.09%) and catalyst properties (12.72%). The variables of each component have been correlated with the indexes and yields of the products: conversion, octane number, aromatics, olefins (propylene) or coke, among others.

scholarly journals Development of a Mesoporous Silica-Supported Layered Double Hydroxide Catalyst for the Reduction of Oxygenated Compounds in E. grandis Fast Pyrolysis Oils

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1527
Author(s):  
Danya Carla Maree ◽  
Mike Heydenrych
Keyword(s):  
Mesoporous Silica ◽  
Fossil Fuels ◽  
Electrostatic Precipitator ◽  
Fast Pyrolysis ◽  
Pyrolysis Oil ◽  
Average Pore ◽  
Bomb Calorimetry ◽  
Pore Sizes ◽  
Surface Areas ◽  
Pyrolysis Oils

Biomass fast pyrolysis oil is a potential renewable alternative to fossil fuels, but its viability is constrained by its corrosiveness, low higher heating value and instability, caused by high oxygenate concentrations. A few studies have outlined layered double hydroxides (LDHs) as possible catalysts for the improvement of biomass pyrolysis oil characteristics. In this study, the goal was to reduce the concentration of oxygen-rich compounds in E. grandis fast pyrolysis oils using CaAl- and MgAl- LDHs. The LDHs were supported by mesoporous silica, synthesised at different pHs to obtain different pore sizes (3.3 to 4.8 nm) and surface areas (up to 600 m2/g). The effects of the support pore sizes and use of LDHs were investigated. GC/MS results revealed that MgAl-LDH significantly reduced the concentrations of ketones and oxygenated aromatics in the electrostatic precipitator oils and increased the concentration of aliphatics. CaAl-LDH had the opposite effect. There was little effect on the oxygenate concentrations of the heat exchanger oils, suggesting that there was a greater extent of conversion of the lighter oil compounds. Bomb calorimetry also showed a marked increase in higher heating values (16.2 to 22.5 MJ/kg) in the electrostatic precipitator oils when using MgAl-LDH. It was also found that the mesoporous silica support synthesised at a pH of 7 was the most effective, likely due to the intermediate average pore width (4 nm).

scholarly journals Co-feeding of vacuum gas oil and pinewood-derived hydrogenated pyrolysis oils in a fluid catalytic cracking pilot plant to generate olefins and gasoline

2021 ◽  
Vol 1 ◽  
pp. 143
Author(s):  
Marco Buechele ◽  
Helene Lutz ◽  
Florian Knaus ◽  
Alexander Reichhold ◽  
Robbie Venderbosch ◽  
...  
Keyword(s):  
Sulfur Content ◽  
Catalytic Cracking ◽  
Pilot Plant ◽  
Fluid Catalytic Cracking ◽  
Vacuum Gas Oil ◽  
Pyrolysis Oil ◽  
Gas Oil ◽  
Hydrocarbon Gases ◽  
Process Step ◽  
Pyrolysis Oils

Background: The Waste2Road project exploits new sustainable pathways to generate biogenic fuels from waste materials, deploying existing industrial scale processes. One such pathway is through pyrolysis of wood wastes. Methods: The hereby generated pyrolysis liquids were hydrogenated prior to co-feeding in a fluid catalytic cracking (FCC) pilot plant. So-called stabilized pyrolysis oil (SPO) underwent one mild hydrogenation step (max. 200 °C) whereas the stabilized and deoxygenated pyrolysis oil (SDPO) was produced in two steps, a mild one (maximum 250 °C) prior to a more severe process step (350 °C). These liquids were co-fed with vacuum gas oil (VGO) in an FCC pilot plant under varying riser temperatures (530 and 550 °C). The results of the produced hydrocarbon gases and gasoline were benchmarked to feeding pure VGO. Results: It was proven that co-feeding up to 10 wt% SPO and SDPO is feasible. However, further experiments are recommended for SPO due to operational instabilities originating from pipe clogging. SPO led to an increase in the hydrocarbon gas production from 45.0 to 46.3 wt% at 550 °C and no significant changes at 530 °C. SDPO led to a rise in gasoline yield at both riser temperatures. The highest amount of gasoline was produced when SDPO was co-fed at a 530 °C riser temperature, with values around 44.8 wt%. Co-feeding hydrogenated pyrolysis oils did not lead to a rise in sulfur content in the gasoline fractions. The highest values were around 18 ppm sulfur content. Instead, higher amounts of nitrogen were observed in the gasoline. Conclusions: SPO and SDPO proved to be valuable co-refining options which led to no significant decreases in product quality. Further experiments are encouraged to determine the maximum possible co-feeding rates. As a first step, 20-30 wt% for SPO are recommended, whereas for SDPO  100 wt% could be achievable.

scholarly journals Phosphorus speciation analysis of fatty-acid-based feedstocks and fast pyrolysis biocrudes via gel permeation chromatography inductively coupled plasma high-resolution mass spectrometry

RSC Advances ◽  
2021 ◽  
Vol 11 (43) ◽  
pp. 26732-26738
Author(s):  
Victor Garcia-Montoto ◽  
Sylvain Verdier ◽  
David C. Dayton ◽  
Ofei Mante ◽  
Carine Arnaudguilhem ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
High Resolution Mass Spectrometry ◽  
Fast Pyrolysis ◽  
Gel Permeation Chromatography ◽  
Speciation Analysis ◽  
Transportation Fuels ◽  
Inductively Coupled ◽  
Animal Fats ◽  
Renewable Feedstocks ◽  
Pyrolysis Oils

Renewable feedstocks, such as lignocelulosic fast pyrolysis oils and both vegetable oil and animal fats, are becoming a viable alternative to petroleum for producing high-quality renewable transportation fuels.

scholarly journals Continuous Slurry Hydrocracking of Biobased Fast Pyrolysis Oil

2021 ◽  
Vol 35 (3) ◽  
pp. 2303-2312
Author(s):  
Niklas Bergvall ◽  
Roger Molinder ◽  
Ann-Christine Johansson ◽  
Linda Sandström
Keyword(s):  
Fast Pyrolysis ◽  
Pyrolysis Oil

Experimental and numerical study of biomass fast pyrolysis oil spray combustion: Advanced laser diagnostics and emission spectrometry

Fuel ◽  
2019 ◽  
Vol 252 ◽  
pp. 125-134 ◽  
Author(s):  
Pál Tóth ◽  
Christian Brackmann ◽  
Yngve Ögren ◽  
Manu Naduvil Mannazhi ◽  
Johan Simonsson ◽  
...  
Keyword(s):  
Laser Diagnostics ◽  
Numerical Study ◽  
Fast Pyrolysis ◽  
Emission Spectrometry ◽  
Spray Combustion ◽  
Pyrolysis Oil ◽  
Biomass Fast Pyrolysis
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