Simulação de um processo de produção de energia baseado na reforma de bio-óleo

• Autor(a) principal: Rodrigues, Caroline Teixeira
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/001300000csd1
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/9554
• topic: Bio-óleo; Reforma; Hidrogênio; Simulação; Bio-oil; Reforming; Hydrogen; Simulation; ENGENHARIAS::ENGENHARIA QUIMICA

There is a growing interest in the development of clean and renewable processes for obtaining energy. In this sense, one of the most interesting fuels in the present is hydrogen. An opportunity is to reform the bio-oil for hydrogen production and fuel cell application. The bio-oil is a residue of flash pyrolysis and is a complex mixture of oxygenated compounds that depends on the conditions of pyrolysis operation and the nature of the biomass used. Acetic acid is one of the main compounds of this mixture, and this is often considered to be a model compound for the study of reactions with bio-oil. The steam reforming is the main process used commercially in the production of hydrogen from fuels fossil. However, this technology can be employed in the production of hydrogen from renewable sources. This process basically consists of the reaction of a substrate (hydrocarbon) with steam at high temperature providing a mixture of gases composed mainly of hydrogen and carbon monoxide. This reaction is highly endothermic which requires the consumption of large amounts of thermal energy. The autothermal reforming combines the steam reforming, an endothermic reaction, and the partial oxidation, an exothermic reaction, generating a thermally standalone process. This reaction consists of the feeding of steam and oxygen along with the substrate providing as a product a mixture composed mainly of hydrogen and carbon monoxide, and other compounds such as methane and carbon dioxide. Hydrogen is the most used fuel in fuel cells. Fuel cells are more efficient energy generation systems than internal combustion and produce clean energy. The literature misses computational works that study systems like the described integrated self energetically. In this way, this work intends to contribute to the theme, presenting unprecedented computational simulations of hydrogen production processes from bio-oil by oxidative steam reforming and steam reforming. The hydrogen formed will be used for fuel cell feed for energy production. The best operating conditions will be simulated in a complete process with energy integration to assess that they are self-reliant from the point of view of energy expenditures. This study constitutes an important step in the technological development of processes that enable the production of hydrogen and energy from renewable sources of energy.