Estudos de processos avançados em geração termelétrica utilizando leitos fluidizados consumindo biomassa / Advanced studies on power generation processes based on fluidized beds consuming biomass

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

23/07/2012

RESUMO

A study aiming maximizing the efficiency of an advanced combined power generation process has been developed. The process applies a pressurized fluidized bed boiler consuming sugar cane bagasse fed as slurry. The generated steam is diverted to a reheated Rankine cycle while the gas exiting the boiler is directed to a gas turbine process. Many assumptions have been taken, among them: the boiler design, the pressure inside its combustion chamber, the rate of fuel consumption, the pressure of produced steam, the gas turbine injection temperature and the temperature of gas exiting the whole plant. The parameters taken as variables were: the concentration of dry solid in the slurry, the mass flow of water pumped into the boiler tube banks and the rate or air injection into the boiler combustion chamber. The CeSFaMB© software has been applied for the boiler optimization, having the exergy efficiency as objective function. The software IPES has been used for the optimization of Rankine cycle, the gas turbine process and theirs combination. The achieved overall power generation efficiency was around 36 %. Having in mind that the efficiency found at present sugar-cane conventional processes are around 30%, the value arrived at this study is significant.

ASSUNTO(S)

biomassa energia termelétrica leito fluidizado processo combinado bagaço de cana biomass thermoelectric power fluidized bed process combined sugar cane bagasse

ACESSO AO ARTIGO

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