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Full-Text Articles in Engineering

Upgrading Of Fast Pyrolysis Oil Via Hdo Using Nano-Structured Catalysts, Shima Ahmadi Aug 2014

Upgrading Of Fast Pyrolysis Oil Via Hdo Using Nano-Structured Catalysts, Shima Ahmadi

Electronic Thesis and Dissertation Repository

The effects of type of solvents (hydro-treated or upgraded pyrolysis oil and ethanol) on hydro-de-oxygenation (HDO) of fast pyrolysis oil were studied. The presence and the type of solvent were found to be effective for prevention or reduction of self-polymerization during the bio-oil HDO process. Using ethanol as the solvent had superior performance in terms of the heating value, molecular weight and elemental composition of the upgraded oil products, compared to using hydro-treated oils as the solvent. Furthermore, novel CoMo catalysts supported on nano-structured materials including MCM-41 and SBA-15 were synthesized and tested on HDO of fast pyrolysis oil in ...


The Effect Of Process Variables On Pyrolysis In A Freefall Reactor, Preston Gable Jan 2014

The Effect Of Process Variables On Pyrolysis In A Freefall Reactor, Preston Gable

Graduate Theses and Dissertations

The focus of this work is to test variables of fast pyrolysis conditions in a free fall reactor in order to better understand their impact on pyrolysis products, specifically optimization of bio-oil yields. In the first study, a design of experiments was performed and products were analyzed to evaluate the effects of temperature, sweep gas flow rates, and particle heating time, on bio-oil yields. This study proved particle heating time to be a very important variable effecting bio-oil yields, and that a heating time of greater than the traditionally assumed two seconds must be achieved in order to optimize yields ...


A Study Of Induction Pyrolysis Of Lignicellulosic Biomass For The Production Of Bio-Oil, Charles Edward Henkel Jan 2014

A Study Of Induction Pyrolysis Of Lignicellulosic Biomass For The Production Of Bio-Oil, Charles Edward Henkel

LSU Master's Theses

The increasing demand for energy coupled with a growing concern that the combustion of fossil fuels has on the environment, through the production of greenhouse gases, has created a demand for renewable energy sources. The demand for renewable energy, particularly liquid transportation fuels, can be met in part by the use of biomass based liquid fuels. There are several methods that can be used to produce biomass based fuels, but only thermochemical conversion (pyrolysis) can readily convert lignocellulosic biomass into a fuel-like liquid, bio-oil. The pyrolytic conditions for obtaining maximum liquid yields vary, but many of the criteria can be ...