Avaliação termodinâmica, termoeconômica e econômica da integração de sistemas de gaseificação da biomassa em uma usina sucroalcooleira

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ciclo combinado com gaseificação integrada de biomassa – análise de penalidade exergética de emissão de CO2

Pós-graduação em Engenharia Mecânica - FEG

Estudo de gaseificação de lama de alto forno arcelormital tubarão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise de sistemas de cogeração com gaseificação de licor negro no setor de papel e celulose

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Simulação computacional de gaseificação de madeira de pequeno prte empregando um gaseificador downdraft

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Aspectos técnicos e ambientais da incorporação de novas tecnologias no setor sucroalcooleiro: produção de hidrogênio e gaseificação do bagaço

The purpose of this work is to study the incorporation of hydrogen production (Case A) and the process of gasification of sugarcane bagasse associated with combined cycle gas turbine and steam turbine (Case B) for Distillery Pioneers process. These technologies can be used to improve the energy supply in the sugarcane mill. Initially the processes for obtaining sugar and ethanol from sugarcane is discussed, with a theoretical introduction to hydrogen, the process of steam reforming and gasification of biomass (bagasse) by inserting a turbine associated with the recovery boiler gas. Subsequently makes up the energy and exergy analysis of the incorporation of the above technologies. In end stage makes it an ecological analysis considering or not the carbon cycle (photosynthesis), to determine the levels of emissions of pollutants, carbon dioxide equivalent, indicators of pollution and ecological efficiencies associated with technological developments proposed. It is concluded that hydrogen production by steam reforming of ethanol and gasification of bagasse are viable alternatives from the point of view of technical and environmental applications in the biofuels industry, contributing to the development of the sector in the country

Estudo das características fluidodinâmicas do bagaço de cana de açúcar para aplicações da gaseificação no setor sucroalcooleiro

In this work is studied the fluid dynamic characteristics of sugarcane bagasse for gasification applications and use of syngas in the sugarcane sector. This is an experimental work, which is initially performed the particle size separation of sugarcane bagasse particles, using appropriate equipment. Through the experiment is possible to determine the average diameter of particles pomace typical sugarcane mill. The equipment used for the grading sieve separation assembly consists of several dimensions, arranged vertically and which shows adequate for good separation from the pulp. Later, it makes immediate analysis for the determination of moisture, ash, volatile materials and fixed carbon. The study also determines the gross calorific value and allows analysis of densities of particles of sugar cane bagasse. Also studied the bagasse morphology using electron microscopes, where it was possible to visualize the geometry of the particles of bagasse. The use of Electronic Scanning Microscopy (SEM) provided better understand the morphology and particle size measured by using photography methods. Two methods for determining the sphericity of the particles were also used. The experiments carried out using appropriate standards and specific equations, allowing compare the present results with the values found by several researchers. Subsequently, fluid dynamic simulations were performed for the determination of porosity and minimum fluidization velocity theoretical. It follows that the sphericity and porosity of the bagasse particles influence the minimum fluidization velocity of biomass

Analise técnica, econômica e ecológica da incorporação de sistemas de gaseificação de bagaço de cana-de-açúcar no setor sucroalcooleiro: uso de ciclos combinados para o aumento da oferta de eletricidade

Pós-graduação em Engenharia Mecânica - FEG

Estimativa do potencial de acréscimo da oferta de energia no setor sucroalcooleiro paulista a partir de cogeração e gaseificação do bagaço de cana-de-açúcar com utilização de ciclo combinado

This work evaluates the existing potential in the state of Sao Paulo for the generation of electrical energy using the sugar cane bagasse as fuel. As the bagasse is a by-product of the sugarcane and alcohol industry and it is produced in large scale in the country, mainly in the state of Sao Paulo, it is important to develop researches that aim the best utilization of this input. In order to determine its potential, at first, a study was conducted considering the utilization of the cogeneration, which is a common practice in the plants of the sector. However, it was concluded that the cogeneration could provide a higher quantity of energy if more modern technologies and more efficient processes were used. Another study to estimate the potential considered a system of gasification of the sugar cane bagasse integrated with the combined cycle (BIG/GTCC). It was concluded that this technology can provide a considerable increase in the electrical supply. In this work it was also developed an energetic study based on real data from a plant located in the state of Sao Paulo. A thermodynamic analysis was done in the existing equipment of the cogeneration section of the plant. And another analysis was done considering the implementation of the BIG/GTCC technology to the cogeneration system. Comparing the results of both settings, it was concluded that the utilization of the sugar cane bagasse integrated to a combined cycle increased considerably the efficiency in the generation of electricity of the plant, increasing more than six times its production capacity of electrical energy

Análise técnica econômica de um gaseificador de biomassa de 100 kg/h para acionamento de um motor de combustão interna

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Simulação da produção e combustão de gás de síntese oriundo de gaseificadores de leite fixo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Utilização de syngas em substituição a combustíveis gasoso em processos siderúrgicos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da emissão e do controle dos gases e particulados provenientes da queima de biomassa

Pós-graduação em Engenharia Mecânica - FEG

Aumento da oferta de eletricidade no setor sucroalcooleiro: incorporação de ciclo combinado associado à gaseificador de leito fluidizado

Pós-graduação em Engenharia Mecânica - FEG

Analise técnico-econômica de um gaseificador Downdraft e de filtros para limpeza de gás de síntese

The biomass gasification systems have been used for a long time and prove to be a good alternative to the generation of energy problems. This type of management requires a simple installation and maintenance which gives them a high availability. In Biomass project via Call CTEnerg 33/2006-1, funded by the Ministry of Science and Technology - MCT - Brazil, the Group Energy Systems Optimization – GOSE - at FEG - UNESP built and tested two prototypes of gasifiers. These is fed with 25 kg / h of dry wood (chips), and 50 Nm3 / h of air to produce gas at a flow rate of approximately 70 Nm3 / h of wood (syngas) at a temperature approximately 600 ° C. In this work of graduation, studies were conducted on the materials used in both the gasifier as well as cleaning the filter synthesis gases. The system of gas cleaning and conditioning is vital to ensure the life of the Internal Combustion Engine. In this case the studies of different filters for small gasification systems (properties, materials used, characteristics, types, etc.) are very relevant to its use in the prototype of the college campus. Were also performed a technical and economic analysis of a cogeneration system that consists in the combination of the downdraft gasifier studied in this work, an internal combustion engine, two heat exchangers and a SRA (absorption system refrigerator). Were calculated the costs of electricity generation, hot water and cold water. Finally, we analyzed the economic feasibility of the project