Produção e caracterização de Bio-óleo por Pirólise catalítica de biomassa lignocelulósica num reactor de leito fixo

Abstract

In a society both dependent on energy and aware of the harmful effecteffects of fossil fuels, there is an urgent need to find renewable energy sources renewable energy sources with low environmental impact. In light of this reality, biomass plays a relevantroleToday a relevant role, being considered one of the most important renewable energy sources on our planet.renewable energy sources on our planet. In this work, we studied the production of bio-oil by pyrolysis of lignocellulosic biomass lignocellulosic biomass, including umbila wood sawdust, cashew cashew nut shell, potato reno shell and sugarcane bagasse, in a fixed bed pyrolytic reactor. fixed-bed pyrolytic reactor. Then, the bio-oil was characterized through the determination of physical and chemical properties. To improve the quality of the bio-oil oil produced, calcium oxide was used as a catalyst. The pyrolytic pyrolytic reactor was designed, built and commissioned in the workshop facilities of the Department of Mechanical Engineering, Faculty of Engineering, Eduardo Mondlane Eduardo Mondlane University, in the scope of this work, to operate in batch mode It is connected to a cyclone for coal separation and a condensation system for the of the pyrolytic vapors to obtain bio-oil. The mass balance of the phases showed for the reno potato peel a yield of 42% bio-oil and 36% charcoal in the production without catalysis and presented 46% of bio-oil and bio-oil and 38% of charcoal in the production with catalysis, and was the sample presented the best yields for bio-oil. The following were determined: the composition of gases, the properties of liquid and solid products of pyrolysis as the density, viscosity, pH, oxidative stability, composition by Fourier transform infrared spectroscopy (FTIR) and calorific value, whose results indicate a high potential for generating products of a combustible nature.

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