Yinglei Han - Academia.edu (original) (raw)

Papers by Yinglei Han

Research paper thumbnail of Production and characterization of bio-oil from fluidized bed pyrolysis of olive stones, pinewood, and torrefied feedstock

Journal of Analytical and Applied Pyrolysis

Advancements in fluidized bed pyrolysis mechanisms and analytical methodologies are critical for ... more Advancements in fluidized bed pyrolysis mechanisms and analytical methodologies are critical for progress in the biorefinery sector in general and the aviation fuel sector in particular. The statistical modelling of pyrolysis product yields and composition allowed us to observe advantages of operating temperature and feedstock selections over the torrefaction process and catalyst addition in a fluidized bed reactor. Results suggest that the chemical composition and physical properties of bio-oil from pyrolysis of olive stones at 600 • C and pinewood pellets at 500 • C are the most suitable for use as fuels. This work suggests that only combined use of selected gas chromatography mass spectroscopy, UV fluorescence, nuclear magnetic resonance spectroscopy, and rheology can provide comprehensive information on pyrolysis bio-oil composition. Importantly from a technological point of view, bio-oil was characterized i) by a viscosity similar to that of fossil-based oil; ii) by a low oxygen and water content; and iii) by a balanced composition of aliphatic and aromatic species. These factors indicate that bio-oil from fluidized bed pyrolysis of biomasses is a promising material for use in the aviation industry and energy production.

Research paper thumbnail of Co-hydrotreatment of tire pyrolysis oil and vegetable oil for the production of transportation fuels

Fuel Processing Technology, 2017

Catalytic hydrotreatment followed by products isomerization is an effective technology to convert... more Catalytic hydrotreatment followed by products isomerization is an effective technology to convert vegetable oil to a green fuel composed of straight and branched chain aliphatic hydrocarbons. The content of aromatics in this fuel is very low. In this paper we study the co-hydrotreatment of vegetable oil and tires oil in the presence of a CoMo/Al 2 O 3 catalyst as a way of utilizing existing infrastructure created for vegetable oil processing for tire oil upgrading in order to obtain fuel cuts with aromatics. Hydrotreatment studies with different vegetable oil/tires oil blend ratios were conducted. The yield and composition of the resulting hydrotreated oils are reported. Aliphatic hydrocarbons ranging from C7 to C20 derived from vegetable oils and aromatics from C6 to C16 derived from the tire oil were identified as products. The resulting oils were then successfully distilled into naphtha, kerosene, diesel and gas oil cuts. The yield, chemical composition and the fuel properties of the transportation fuel cuts obtained are reported and compared with commercial petro derived fuels.

Research paper thumbnail of Pyrolysis Bio-Oil Upgrading to Renewable Fuels

This study aims to upgrade woody biomass pyrolysis bio-oil into transportation fuels by catalytic... more This study aims to upgrade woody biomass pyrolysis bio-oil into transportation fuels by catalytic hydrodeoxygenation (HDO) using nanospring (NS) supported catalyst via the following research objectives: (1) develop nanospring-based catalysts (nanocatalyst) and (2) evaluate the nanocatalysts for the hydrogenation of pyrolysis bio-oil into liquid fuels. The authors developed protocols for HDO treatment of bio-oil and model compounds and product evaluation using commercial nickel (Ni) and ruthenium (Ru) based catalysts initially. The authors successfully synthesized Ni decorated NS catalysts (Ni-NS), in small amounts (mg level) and characterized the catalysts. It was shown that the Ni-NS catalyst had to be reduced (activated) before use. The Ni based catalysts were able to hydrodeoxygenate the model compounds and bio-oil and conversion was Ni content and temperature dependent. Low conversions using the Ni-NS catalysts were obtained, but only very small amounts of catalyst were used. Fu...

Research paper thumbnail of Combined analytical strategies for chemical and physical characterization of tar from torrefaction of olive stone

Research paper thumbnail of Ternary Phase Diagram of Water/Bio-Oil/Organic Solvent for Bio-Oil Fractionation

Research paper thumbnail of Chemical Composition and Fuel Properties of Alternative Jet Fuels

BioResources

The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and... more The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and three commercial jet fuels (named as CJF 1, 2 and 3) are reported in this work. The fuels were characterized by GC/MS, SEP-GC/MS (for quantification of oxygenated molecules), viscosity, density, water content, water solubility at 0 °C, carbonyl content, total acid number, elemental composition, calorific value, flash point, differential scanning calorimetry, and surface tension. The content of n-paraffins, iso-paraffins, olefins, naphthenes, and aromatics are reported. The fuel rich in aromatics (AJF 1) has the highest density (0.90 g/mL), C content (over 90 wt. %), and water solubility, lowest calorific value, and high surface tension. The fuels with high contents of light molecules have the lowest flash points (AJFs 1, 6, and 8). AJF 2 is the most viscous fuel due to the presence of a single relatively heavy molecule. The content of oxygenated compounds measured was in all the cases very low and comparable with the amount found in commercial jet fuels. Overall, these fuels comply with most of ASTM requirements and offer opportunities to develop specialized products.

Research paper thumbnail of Hydrotreatment of pyrolysis bio-oil: A review

Fuel Processing Technology

Research paper thumbnail of Chemical Composition and Fuel Properties of Alternative Jet Fuels

The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and... more The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and three commercial jet fuels (named as CJF 1, 2 and 3) are reported in this work. The fuels were characterized by GC/MS, SEP-GC/MS (for quantification of oxygenated molecules), viscosity, density, water content, water solubility at 0 °C, carbonyl content, total acid number, elemental composition, calorific value, flash point, differential scanning calorimetry, and surface tension. The content of n-paraffins, iso-paraffins, olefins, naphthenes, and aromatics are reported. The fuel rich in aromatics (AJF 1) has the highest density (0.90 g/mL), C content (over 90 wt. %), and water solubility, lowest calorific value, and high surface tension. The fuels with high contents of light molecules have the lowest flash points (AJFs 1, 6, and 8). AJF 2 is the most viscous fuel due to the presence of a single relatively heavy molecule. The content of oxygenated compounds measured was in all the cases v...

Research paper thumbnail of Co-hydrotreatment of Bio-oil Lignin-rich Fraction and Vegetable Oil

Research paper thumbnail of Synergistic Effect of Mo-W Carbides on Selective Hydrodeoxygenation of Guaiacol to Oxygen-Free Aromatic Hydrocarbons

Research paper thumbnail of Hydrodeoxygenation of pyrolysis oil for hydrocarbon production using nanospring based catalysts

Journal of Analytical and Applied Pyrolysis, 2016

Research paper thumbnail of Production and characterization of bio-oil and bio-char from pyrolysis of potato peel wastes

Biomass Conversion and Biorefinery, 2014

Research paper thumbnail of Co-hydrotreatment of tire pyrolysis oil and vegetable oil for the production of transportation fuels

Catalytic hydrotreatment followed by products isomerization is an effective technology to convert... more Catalytic hydrotreatment followed by products isomerization is an effective technology to convert vegetable oil to a green fuel composed of straight and branched chain aliphatic hydrocarbons. The content of aromatics in this fuel is very low. In this paper we study the co-hydrotreatment of vegetable oil and tires oil in the presence of a CoMo/Al 2 O 3 catalyst as a way of utilizing existing infrastructure created for vegetable oil processing for tire oil upgrading in order to obtain fuel cuts with aromatics. Hydrotreatment studies with different vegetable oil/ tires oil blend ratios were conducted. The yield and composition of the resulting hydrotreated oils are reported. Aliphatic hydrocarbons ranging from C7 to C20 derived from vegetable oils and aromatics from C6 to C16 derived from the tire oil were identified as products. The resulting oils were then successfully distilled into naphtha, kerosene , diesel and gas oil cuts. The yield, chemical composition and the fuel properties of the transportation fuel cuts obtained are reported and compared with commercial petro derived fuels.

Research paper thumbnail of Production and characterization of bio-oil from fluidized bed pyrolysis of olive stones, pinewood, and torrefied feedstock

Journal of Analytical and Applied Pyrolysis

Advancements in fluidized bed pyrolysis mechanisms and analytical methodologies are critical for ... more Advancements in fluidized bed pyrolysis mechanisms and analytical methodologies are critical for progress in the biorefinery sector in general and the aviation fuel sector in particular. The statistical modelling of pyrolysis product yields and composition allowed us to observe advantages of operating temperature and feedstock selections over the torrefaction process and catalyst addition in a fluidized bed reactor. Results suggest that the chemical composition and physical properties of bio-oil from pyrolysis of olive stones at 600 • C and pinewood pellets at 500 • C are the most suitable for use as fuels. This work suggests that only combined use of selected gas chromatography mass spectroscopy, UV fluorescence, nuclear magnetic resonance spectroscopy, and rheology can provide comprehensive information on pyrolysis bio-oil composition. Importantly from a technological point of view, bio-oil was characterized i) by a viscosity similar to that of fossil-based oil; ii) by a low oxygen and water content; and iii) by a balanced composition of aliphatic and aromatic species. These factors indicate that bio-oil from fluidized bed pyrolysis of biomasses is a promising material for use in the aviation industry and energy production.

Research paper thumbnail of Co-hydrotreatment of tire pyrolysis oil and vegetable oil for the production of transportation fuels

Fuel Processing Technology, 2017

Catalytic hydrotreatment followed by products isomerization is an effective technology to convert... more Catalytic hydrotreatment followed by products isomerization is an effective technology to convert vegetable oil to a green fuel composed of straight and branched chain aliphatic hydrocarbons. The content of aromatics in this fuel is very low. In this paper we study the co-hydrotreatment of vegetable oil and tires oil in the presence of a CoMo/Al 2 O 3 catalyst as a way of utilizing existing infrastructure created for vegetable oil processing for tire oil upgrading in order to obtain fuel cuts with aromatics. Hydrotreatment studies with different vegetable oil/tires oil blend ratios were conducted. The yield and composition of the resulting hydrotreated oils are reported. Aliphatic hydrocarbons ranging from C7 to C20 derived from vegetable oils and aromatics from C6 to C16 derived from the tire oil were identified as products. The resulting oils were then successfully distilled into naphtha, kerosene, diesel and gas oil cuts. The yield, chemical composition and the fuel properties of the transportation fuel cuts obtained are reported and compared with commercial petro derived fuels.

Research paper thumbnail of Pyrolysis Bio-Oil Upgrading to Renewable Fuels

This study aims to upgrade woody biomass pyrolysis bio-oil into transportation fuels by catalytic... more This study aims to upgrade woody biomass pyrolysis bio-oil into transportation fuels by catalytic hydrodeoxygenation (HDO) using nanospring (NS) supported catalyst via the following research objectives: (1) develop nanospring-based catalysts (nanocatalyst) and (2) evaluate the nanocatalysts for the hydrogenation of pyrolysis bio-oil into liquid fuels. The authors developed protocols for HDO treatment of bio-oil and model compounds and product evaluation using commercial nickel (Ni) and ruthenium (Ru) based catalysts initially. The authors successfully synthesized Ni decorated NS catalysts (Ni-NS), in small amounts (mg level) and characterized the catalysts. It was shown that the Ni-NS catalyst had to be reduced (activated) before use. The Ni based catalysts were able to hydrodeoxygenate the model compounds and bio-oil and conversion was Ni content and temperature dependent. Low conversions using the Ni-NS catalysts were obtained, but only very small amounts of catalyst were used. Fu...

Research paper thumbnail of Combined analytical strategies for chemical and physical characterization of tar from torrefaction of olive stone

Research paper thumbnail of Ternary Phase Diagram of Water/Bio-Oil/Organic Solvent for Bio-Oil Fractionation

Research paper thumbnail of Chemical Composition and Fuel Properties of Alternative Jet Fuels

BioResources

The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and... more The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and three commercial jet fuels (named as CJF 1, 2 and 3) are reported in this work. The fuels were characterized by GC/MS, SEP-GC/MS (for quantification of oxygenated molecules), viscosity, density, water content, water solubility at 0 °C, carbonyl content, total acid number, elemental composition, calorific value, flash point, differential scanning calorimetry, and surface tension. The content of n-paraffins, iso-paraffins, olefins, naphthenes, and aromatics are reported. The fuel rich in aromatics (AJF 1) has the highest density (0.90 g/mL), C content (over 90 wt. %), and water solubility, lowest calorific value, and high surface tension. The fuels with high contents of light molecules have the lowest flash points (AJFs 1, 6, and 8). AJF 2 is the most viscous fuel due to the presence of a single relatively heavy molecule. The content of oxygenated compounds measured was in all the cases very low and comparable with the amount found in commercial jet fuels. Overall, these fuels comply with most of ASTM requirements and offer opportunities to develop specialized products.

Research paper thumbnail of Hydrotreatment of pyrolysis bio-oil: A review

Fuel Processing Technology

Research paper thumbnail of Chemical Composition and Fuel Properties of Alternative Jet Fuels

The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and... more The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and three commercial jet fuels (named as CJF 1, 2 and 3) are reported in this work. The fuels were characterized by GC/MS, SEP-GC/MS (for quantification of oxygenated molecules), viscosity, density, water content, water solubility at 0 °C, carbonyl content, total acid number, elemental composition, calorific value, flash point, differential scanning calorimetry, and surface tension. The content of n-paraffins, iso-paraffins, olefins, naphthenes, and aromatics are reported. The fuel rich in aromatics (AJF 1) has the highest density (0.90 g/mL), C content (over 90 wt. %), and water solubility, lowest calorific value, and high surface tension. The fuels with high contents of light molecules have the lowest flash points (AJFs 1, 6, and 8). AJF 2 is the most viscous fuel due to the presence of a single relatively heavy molecule. The content of oxygenated compounds measured was in all the cases v...

Research paper thumbnail of Co-hydrotreatment of Bio-oil Lignin-rich Fraction and Vegetable Oil

Research paper thumbnail of Synergistic Effect of Mo-W Carbides on Selective Hydrodeoxygenation of Guaiacol to Oxygen-Free Aromatic Hydrocarbons

Research paper thumbnail of Hydrodeoxygenation of pyrolysis oil for hydrocarbon production using nanospring based catalysts

Journal of Analytical and Applied Pyrolysis, 2016

Research paper thumbnail of Production and characterization of bio-oil and bio-char from pyrolysis of potato peel wastes

Biomass Conversion and Biorefinery, 2014

Research paper thumbnail of Co-hydrotreatment of tire pyrolysis oil and vegetable oil for the production of transportation fuels

Catalytic hydrotreatment followed by products isomerization is an effective technology to convert... more Catalytic hydrotreatment followed by products isomerization is an effective technology to convert vegetable oil to a green fuel composed of straight and branched chain aliphatic hydrocarbons. The content of aromatics in this fuel is very low. In this paper we study the co-hydrotreatment of vegetable oil and tires oil in the presence of a CoMo/Al 2 O 3 catalyst as a way of utilizing existing infrastructure created for vegetable oil processing for tire oil upgrading in order to obtain fuel cuts with aromatics. Hydrotreatment studies with different vegetable oil/ tires oil blend ratios were conducted. The yield and composition of the resulting hydrotreated oils are reported. Aliphatic hydrocarbons ranging from C7 to C20 derived from vegetable oils and aromatics from C6 to C16 derived from the tire oil were identified as products. The resulting oils were then successfully distilled into naphtha, kerosene , diesel and gas oil cuts. The yield, chemical composition and the fuel properties of the transportation fuel cuts obtained are reported and compared with commercial petro derived fuels.